Search (184 results, page 1 of 10)

0.48184693 = product of:
  0.5782163 = sum of:
    0.23284428 = weight(_text_:umfeld in 1534) [ClassicSimilarity], result of:
      0.23284428 = score(doc=1534,freq=2.0), product of:
        0.26788878 = queryWeight, product of:
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.047673445 = queryNorm
        0.86918265 = fieldWeight in 1534, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.109375 = fieldNorm(doc=1534)
    0.019295897 = weight(_text_:in in 1534) [ClassicSimilarity], result of:
      0.019295897 = score(doc=1534,freq=4.0), product of:
        0.06484802 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.047673445 = queryNorm
        0.29755569 = fieldWeight in 1534, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.109375 = fieldNorm(doc=1534)
    0.21327409 = weight(_text_:indexierung in 1534) [ClassicSimilarity], result of:
      0.21327409 = score(doc=1534,freq=2.0), product of:
        0.25638393 = queryWeight, product of:
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.047673445 = queryNorm
        0.8318544 = fieldWeight in 1534, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.109375 = fieldNorm(doc=1534)
    0.0790651 = weight(_text_:u in 1534) [ClassicSimilarity], result of:
      0.0790651 = score(doc=1534,freq=2.0), product of:
        0.15610404 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.047673445 = queryNorm
        0.50648975 = fieldWeight in 1534, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.109375 = fieldNorm(doc=1534)
    0.033736963 = product of:
      0.067473926 = sum of:
        0.067473926 = weight(_text_:retrieval in 1534) [ClassicSimilarity], result of:
          0.067473926 = score(doc=1534,freq=2.0), product of:
            0.14420812 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.047673445 = queryNorm
            0.46789268 = fieldWeight in 1534, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.109375 = fieldNorm(doc=1534)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Theme

Semantisches Umfeld in Indexierung u. Retrieval

0.25965288 = product of:
  0.31158346 = sum of:
    0.11642214 = weight(_text_:umfeld in 2385) [ClassicSimilarity], result of:
      0.11642214 = score(doc=2385,freq=2.0), product of:
        0.26788878 = queryWeight, product of:
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.047673445 = queryNorm
        0.43459132 = fieldWeight in 2385, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.0546875 = fieldNorm(doc=2385)
    0.015254747 = weight(_text_:in in 2385) [ClassicSimilarity], result of:
      0.015254747 = score(doc=2385,freq=10.0), product of:
        0.06484802 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.047673445 = queryNorm
        0.23523843 = fieldWeight in 2385, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.0546875 = fieldNorm(doc=2385)
    0.106637046 = weight(_text_:indexierung in 2385) [ClassicSimilarity], result of:
      0.106637046 = score(doc=2385,freq=2.0), product of:
        0.25638393 = queryWeight, product of:
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.047673445 = queryNorm
        0.4159272 = fieldWeight in 2385, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.0546875 = fieldNorm(doc=2385)
    0.03953255 = weight(_text_:u in 2385) [ClassicSimilarity], result of:
      0.03953255 = score(doc=2385,freq=2.0), product of:
        0.15610404 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.047673445 = queryNorm
        0.25324488 = fieldWeight in 2385, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.0546875 = fieldNorm(doc=2385)
    0.033736963 = product of:
      0.067473926 = sum of:
        0.067473926 = weight(_text_:retrieval in 2385) [ClassicSimilarity], result of:
          0.067473926 = score(doc=2385,freq=8.0), product of:
            0.14420812 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.047673445 = queryNorm
            0.46789268 = fieldWeight in 2385, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2385)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Abstract

LyberWorld is a prototype IR user interface. It implements visualizations of an abstract information space: fulltext. The video demonstrates a visual user interface for the probabilistic fulltext retrieval system INQUERY. Visualizations are used to communicate information search and browsing activities in a natural way by applying metaphors of spatial navigation in abstract information spaces. Visualization tools for exploring information spaces and judging relevance of information items are introduced and an example session demonstrates the prototype. The presence of a spatial model in the user's mind is regarded as an essential contribution towards natural interaction and reduction of cognitive costs during retrieval dialogues.

Source

Proceeding CHI '95 Conference Companion on Human Factors in Computing Systems

Theme

Semantisches Umfeld in Indexierung u. Retrieval

0.22540398 = product of:
  0.27048478 = sum of:
    0.09979041 = weight(_text_:umfeld in 2384) [ClassicSimilarity], result of:
      0.09979041 = score(doc=2384,freq=2.0), product of:
        0.26788878 = queryWeight, product of:
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.047673445 = queryNorm
        0.37250686 = fieldWeight in 2384, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.046875 = fieldNorm(doc=2384)
    0.013075498 = weight(_text_:in in 2384) [ClassicSimilarity], result of:
      0.013075498 = score(doc=2384,freq=10.0), product of:
        0.06484802 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.047673445 = queryNorm
        0.20163295 = fieldWeight in 2384, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.046875 = fieldNorm(doc=2384)
    0.09140319 = weight(_text_:indexierung in 2384) [ClassicSimilarity], result of:
      0.09140319 = score(doc=2384,freq=2.0), product of:
        0.25638393 = queryWeight, product of:
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.047673445 = queryNorm
        0.35650903 = fieldWeight in 2384, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.046875 = fieldNorm(doc=2384)
    0.033885043 = weight(_text_:u in 2384) [ClassicSimilarity], result of:
      0.033885043 = score(doc=2384,freq=2.0), product of:
        0.15610404 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.047673445 = queryNorm
        0.21706703 = fieldWeight in 2384, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.046875 = fieldNorm(doc=2384)
    0.032330632 = product of:
      0.064661264 = sum of:
        0.064661264 = weight(_text_:retrieval in 2384) [ClassicSimilarity], result of:
          0.064661264 = score(doc=2384,freq=10.0), product of:
            0.14420812 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.047673445 = queryNorm
            0.44838852 = fieldWeight in 2384, product of:
              3.1622777 = tf(freq=10.0), with freq of:
                10.0 = termFreq=10.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.046875 = fieldNorm(doc=2384)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Abstract

LyberWorld is a prototype IR user interface. It implements visualizations of an abstract information space-fulltext. The paper derives a model for such visualizations and an exemplar user interface design is implemented for the probabilistic fulltext retrieval system INQUERY. Visualizations are used to communicate information search and browsing activities in a natural way by applying metaphors of spatial navigation in abstract information spaces. Visualization tools for exploring information spaces and judging relevance of information items are introduced and an example session demonstrates the prototype. The presence of a spatial model in the user's mind and interaction with a system's corresponding display methods is regarded as an essential contribution towards natural interaction and reduction of cognitive costs during e.g. query construction, orientation within the database content, relevance judgement and orientation within the retrieval context.

Source

Proceeding SIGIR '94: Proceedings of the 17th annual international ACM SIGIR conference on Research and development in information retrieval

Theme

Semantisches Umfeld in Indexierung u. Retrieval

0.22139911 = product of:
  0.26567894 = sum of:
    0.09979041 = weight(_text_:umfeld in 919) [ClassicSimilarity], result of:
      0.09979041 = score(doc=919,freq=2.0), product of:
        0.26788878 = queryWeight, product of:
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.047673445 = queryNorm
        0.37250686 = fieldWeight in 919, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.046875 = fieldNorm(doc=919)
    0.00826967 = weight(_text_:in in 919) [ClassicSimilarity], result of:
      0.00826967 = score(doc=919,freq=4.0), product of:
        0.06484802 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.047673445 = queryNorm
        0.12752387 = fieldWeight in 919, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.046875 = fieldNorm(doc=919)
    0.09140319 = weight(_text_:indexierung in 919) [ClassicSimilarity], result of:
      0.09140319 = score(doc=919,freq=2.0), product of:
        0.25638393 = queryWeight, product of:
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.047673445 = queryNorm
        0.35650903 = fieldWeight in 919, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.046875 = fieldNorm(doc=919)
    0.033885043 = weight(_text_:u in 919) [ClassicSimilarity], result of:
      0.033885043 = score(doc=919,freq=2.0), product of:
        0.15610404 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.047673445 = queryNorm
        0.21706703 = fieldWeight in 919, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.046875 = fieldNorm(doc=919)
    0.032330632 = product of:
      0.064661264 = sum of:
        0.064661264 = weight(_text_:retrieval in 919) [ClassicSimilarity], result of:
          0.064661264 = score(doc=919,freq=10.0), product of:
            0.14420812 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.047673445 = queryNorm
            0.44838852 = fieldWeight in 919, product of:
              3.1622777 = tf(freq=10.0), with freq of:
                10.0 = termFreq=10.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.046875 = fieldNorm(doc=919)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Abstract

Document retrieval is a highly interactive process dealing with large amounts of information. Visual representations can provide both a means for managing the complexity of large information structures and an interface style well suited to interactive manipulation. The system we have designed utilizes visually displayed graphic structures and a direct manipulation interface style to supply an integrated environment for retrieval. A common visually displayed network structure is used for query, document content, and term relations. A query can be modified through direct manipulation of its visual form by incorporating terms from any other information structure the system displays. An associative thesaurus of terms and an inter-document network provide information about a document collection that can complement other retrieval aids. Visualization of these large data structures makes use of fisheye views and overview diagrams to help overcome some of the inherent difficulties of orientation and navigation in large information structures.

Theme

Semantisches Umfeld in Indexierung u. Retrieval

0.20805465 = product of:
  0.24966559 = sum of:
    0.09979041 = weight(_text_:umfeld in 644) [ClassicSimilarity], result of:
      0.09979041 = score(doc=644,freq=2.0), product of:
        0.26788878 = queryWeight, product of:
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.047673445 = queryNorm
        0.37250686 = fieldWeight in 644, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.046875 = fieldNorm(doc=644)
    0.010128236 = weight(_text_:in in 644) [ClassicSimilarity], result of:
      0.010128236 = score(doc=644,freq=6.0), product of:
        0.06484802 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.047673445 = queryNorm
        0.1561842 = fieldWeight in 644, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.046875 = fieldNorm(doc=644)
    0.09140319 = weight(_text_:indexierung in 644) [ClassicSimilarity], result of:
      0.09140319 = score(doc=644,freq=2.0), product of:
        0.25638393 = queryWeight, product of:
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.047673445 = queryNorm
        0.35650903 = fieldWeight in 644, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.046875 = fieldNorm(doc=644)
    0.033885043 = weight(_text_:u in 644) [ClassicSimilarity], result of:
      0.033885043 = score(doc=644,freq=2.0), product of:
        0.15610404 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.047673445 = queryNorm
        0.21706703 = fieldWeight in 644, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.046875 = fieldNorm(doc=644)
    0.014458697 = product of:
      0.028917395 = sum of:
        0.028917395 = weight(_text_:retrieval in 644) [ClassicSimilarity], result of:
          0.028917395 = score(doc=644,freq=2.0), product of:
            0.14420812 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.047673445 = queryNorm
            0.20052543 = fieldWeight in 644, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.046875 = fieldNorm(doc=644)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Abstract

While the search interfaces used by common academic digital libraries provide easy access to a wealth of peer-reviewed literature, their interfaces provide little support for exploratory browsing. When faced with a complex search task (such as one that requires knowledge discovery), exploratory browsing is an important first step in an exploratory search process. To more effectively support exploratory browsing, we have designed and implemented a novel academic digital library search interface (KLink Search) with two new features: visually linked keywords and an interactive workspace. To study the potential value of these features, we have conducted a controlled laboratory study with 32 participants, comparing KLink Search to a baseline digital library search interface modeled after that used by IEEE Xplore. Based on subjective opinions, objective performance, and behavioral data, we show the value of adding lightweight visual and interactive features to academic digital library search interfaces to support exploratory browsing.

Theme

Semantisches Umfeld in Indexierung u. Retrieval

0.19508977 = product of:
  0.23410773 = sum of:
    0.08315867 = weight(_text_:umfeld in 2382) [ClassicSimilarity], result of:
      0.08315867 = score(doc=2382,freq=2.0), product of:
        0.26788878 = queryWeight, product of:
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.047673445 = queryNorm
        0.31042236 = fieldWeight in 2382, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2382)
    0.008440197 = weight(_text_:in in 2382) [ClassicSimilarity], result of:
      0.008440197 = score(doc=2382,freq=6.0), product of:
        0.06484802 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.047673445 = queryNorm
        0.1301535 = fieldWeight in 2382, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2382)
    0.07616932 = weight(_text_:indexierung in 2382) [ClassicSimilarity], result of:
      0.07616932 = score(doc=2382,freq=2.0), product of:
        0.25638393 = queryWeight, product of:
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.047673445 = queryNorm
        0.29709086 = fieldWeight in 2382, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2382)
    0.028237537 = weight(_text_:u in 2382) [ClassicSimilarity], result of:
      0.028237537 = score(doc=2382,freq=2.0), product of:
        0.15610404 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.047673445 = queryNorm
        0.1808892 = fieldWeight in 2382, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2382)
    0.038102012 = product of:
      0.076204024 = sum of:
        0.076204024 = weight(_text_:retrieval in 2382) [ClassicSimilarity], result of:
          0.076204024 = score(doc=2382,freq=20.0), product of:
            0.14420812 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.047673445 = queryNorm
            0.5284309 = fieldWeight in 2382, product of:
              4.472136 = tf(freq=20.0), with freq of:
                20.0 = termFreq=20.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2382)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Abstract

In der folgenden Studie wird eine Komponente für eine visuelle Benutzerschnittstelle zu Textdatenbanken entworfen. Mit Hilfe einer Terminologievisualisierung wird dem Benutzer eine Hilfestellung bei der Relevanzbewertung von Dokumenten und bei der Erweiterung seiner visuellen Anfrage an das Retrieval-System gegeben. Dazu werden zuerst die grundlegenden Information-Retrieval-Modelle eingehender vorgestellt, d.h., generelle Retrieval-Modelle, Retrievaloperationen und spezielle Retrieval-Modelle wie Text-Retrieval werden erläutert. Die Funktionalität eines Text-Retrieval-Systems wird vorgestellt. Darüber hinaus werden bereits existierende Implementierungen visueller Information-Retrieval-Benutzerschnittstellen vorgestellt. Im weiteren Verlauf der Arbeit werden mögliche Visualisierungen der mit Hilfe eines Text-Retrieval-Systems gefundenen Dokumente aufgezeigt. Es werden mehrere Vorschläge zur Visualisierung von Thesauri diskutiert. Es wird gezeigt, wie neuronale Netze zur Kartierung eines Eingabebereiches benutzt werden können. Klassifikationsebenen einer objekt-orientierten Annäherung eines Information-Retrieval-Systems werden vorgestellt. In diesem Zusammenhang werden auch die Eigenschaften von Thesauri sowie die Architektur und Funktion eines Parsersystems erläutert. Mit diesen Voraussetzung wird die Implementierung einer visuellen Terminologierunterstützung realisiert. Abschließend wird ein Fazit zur vorgestellten Realisierung basierend auf einem Drei-Schichten-Modell von [Agosti et al. 1990] gezogen.

Theme

Semantisches Umfeld in Indexierung u. Retrieval

0.1845077 = product of:
  0.22140925 = sum of:
    0.08315867 = weight(_text_:umfeld in 2717) [ClassicSimilarity], result of:
      0.08315867 = score(doc=2717,freq=2.0), product of:
        0.26788878 = queryWeight, product of:
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.047673445 = queryNorm
        0.31042236 = fieldWeight in 2717, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2717)
    0.0097459 = weight(_text_:in in 2717) [ClassicSimilarity], result of:
      0.0097459 = score(doc=2717,freq=8.0), product of:
        0.06484802 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.047673445 = queryNorm
        0.15028831 = fieldWeight in 2717, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2717)
    0.07616932 = weight(_text_:indexierung in 2717) [ClassicSimilarity], result of:
      0.07616932 = score(doc=2717,freq=2.0), product of:
        0.25638393 = queryWeight, product of:
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.047673445 = queryNorm
        0.29709086 = fieldWeight in 2717, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2717)
    0.028237537 = weight(_text_:u in 2717) [ClassicSimilarity], result of:
      0.028237537 = score(doc=2717,freq=2.0), product of:
        0.15610404 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.047673445 = queryNorm
        0.1808892 = fieldWeight in 2717, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2717)
    0.02409783 = product of:
      0.04819566 = sum of:
        0.04819566 = weight(_text_:retrieval in 2717) [ClassicSimilarity], result of:
          0.04819566 = score(doc=2717,freq=8.0), product of:
            0.14420812 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.047673445 = queryNorm
            0.33420905 = fieldWeight in 2717, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2717)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Abstract

As the volume and breadth of online information is rapidly increasing, ad hoc search systems become less and less efficient to answer information needs of modern users. To support the growing complexity of search tasks, researchers in the field of information developed and explored a range of approaches that extend the traditional ad hoc retrieval paradigm. Among these approaches, personalized search systems and exploratory search systems attracted many followers. Personalized search explored the power of artificial intelligence techniques to provide tailored search results according to different user interests, contexts, and tasks. In contrast, exploratory search capitalized on the power of human intelligence by providing users with more powerful interfaces to support the search process. As these approaches are not contradictory, we believe that they can re-enforce each other. We argue that the effectiveness of personalized search systems may be increased by allowing users to interact with the system and learn/investigate the problem in order to reach the final goal. We also suggest that an interactive visualization approach could offer a good ground to combine the strong sides of personalized and exploratory search approaches. This paper proposes a specific way to integrate interactive visualization and personalized search and introduces an adaptive visualization based search system Adaptive VIBE that implements it. We tested the effectiveness of Adaptive VIBE and investigated its strengths and weaknesses by conducting a full-scale user study. The results show that Adaptive VIBE can improve the precision and the productivity of the personalized search system while helping users to discover more diverse sets of information.

Footnote

Beitrag im Rahmen einer Special section on Human-computer Information Retrieval.

Theme

Semantisches Umfeld in Indexierung u. Retrieval

0.17753787 = product of:
  0.21304545 = sum of:
    0.08315867 = weight(_text_:umfeld in 566) [ClassicSimilarity], result of:
      0.08315867 = score(doc=566,freq=2.0), product of:
        0.26788878 = queryWeight, product of:
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.047673445 = queryNorm
        0.31042236 = fieldWeight in 566, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.0390625 = fieldNorm(doc=566)
    0.008440197 = weight(_text_:in in 566) [ClassicSimilarity], result of:
      0.008440197 = score(doc=566,freq=6.0), product of:
        0.06484802 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.047673445 = queryNorm
        0.1301535 = fieldWeight in 566, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.0390625 = fieldNorm(doc=566)
    0.07616932 = weight(_text_:indexierung in 566) [ClassicSimilarity], result of:
      0.07616932 = score(doc=566,freq=2.0), product of:
        0.25638393 = queryWeight, product of:
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.047673445 = queryNorm
        0.29709086 = fieldWeight in 566, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.0390625 = fieldNorm(doc=566)
    0.028237537 = weight(_text_:u in 566) [ClassicSimilarity], result of:
      0.028237537 = score(doc=566,freq=2.0), product of:
        0.15610404 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.047673445 = queryNorm
        0.1808892 = fieldWeight in 566, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.0390625 = fieldNorm(doc=566)
    0.017039739 = product of:
      0.034079477 = sum of:
        0.034079477 = weight(_text_:retrieval in 566) [ClassicSimilarity], result of:
          0.034079477 = score(doc=566,freq=4.0), product of:
            0.14420812 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.047673445 = queryNorm
            0.23632148 = fieldWeight in 566, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.0390625 = fieldNorm(doc=566)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Abstract

Eine der größten Herausforderungen für alle technischen Anwendungen ist die sogenannte Mensch-Maschine-Schnittstelle, also der Problemkreis, wie der bedienende Mensch mit der zu bedienenden Technik kommunizieren kann. Waren die Benutzungsschnittstellen bis Ende der Achtziger Jahre vor allem durch die Notwendigkeit des Benutzers geprägt, sich an die Erfordernisse der Maschine anzupassen, so wurde mit Durchsetzung grafischer Benutzungsoberflächen zunehmend versucht, die Bedienbarkeit so zu gestalten, dass ein Mensch auch ohne größere Einarbeitung in die Lage versetzt werden sollte, seine Befehle der Technik - letztlich also dem Computer - zu übermitteln. Trotz aller Fortschritte auf diesem Gebiet blieb immer die Anforderung, der Mensch solle auf die ihm natürlichste Art und Weise kommunizieren können, mit menschlicher Sprache. Diese Anforderung gilt gerade auch für das Retrieval von Informationen: Warum ist es nötig, die Nutzung von Booleschen Operatoren zu erlernen, nur um eine Suchanfrage stellen zu können? Ein anderes Thema ist die Frage nach der Visualisierung von Wissenszusammenhängen, die sich der Herausforderung stellt, in einem geradezu uferlos sich ausweitenden Informationsangebot weiterhin den Überblick behalten und relevante Informationen schnellstmöglich finden zu können.

Theme

Semantisches Umfeld in Indexierung u. Retrieval

0.17708921 = product of:
  0.21250705 = sum of:
    0.08315867 = weight(_text_:umfeld in 1137) [ClassicSimilarity], result of:
      0.08315867 = score(doc=1137,freq=2.0), product of:
        0.26788878 = queryWeight, product of:
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.047673445 = queryNorm
        0.31042236 = fieldWeight in 1137, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1137)
    0.012892614 = weight(_text_:in in 1137) [ClassicSimilarity], result of:
      0.012892614 = score(doc=1137,freq=14.0), product of:
        0.06484802 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.047673445 = queryNorm
        0.19881277 = fieldWeight in 1137, product of:
          3.7416575 = tf(freq=14.0), with freq of:
            14.0 = termFreq=14.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1137)
    0.07616932 = weight(_text_:indexierung in 1137) [ClassicSimilarity], result of:
      0.07616932 = score(doc=1137,freq=2.0), product of:
        0.25638393 = queryWeight, product of:
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.047673445 = queryNorm
        0.29709086 = fieldWeight in 1137, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1137)
    0.028237537 = weight(_text_:u in 1137) [ClassicSimilarity], result of:
      0.028237537 = score(doc=1137,freq=2.0), product of:
        0.15610404 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.047673445 = queryNorm
        0.1808892 = fieldWeight in 1137, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.0390625 = fieldNorm(doc=1137)
    0.012048915 = product of:
      0.02409783 = sum of:
        0.02409783 = weight(_text_:retrieval in 1137) [ClassicSimilarity], result of:
          0.02409783 = score(doc=1137,freq=2.0), product of:
            0.14420812 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.047673445 = queryNorm
            0.16710453 = fieldWeight in 1137, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1137)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Abstract

Based on real-world user demands, we demonstrate how animated visualization of evolving text corpora displays the underlying dynamics of semantic content. To interpret the results, one needs a dynamic theory of word meaning. We suggest that conceptual dynamics as the interaction between kinds of intellectual and emotional content and language is key for such a theory. We demonstrate our method by two-way seriation, which is a popular technique to analyze groups of similar instances and their features as well as the connections between the groups themselves. The two-way seriated data may be visualized as a two-dimensional heat map or as a three-dimensional landscape in which color codes or height correspond to the values in the matrix. In this article, we focus on two-way seriation of sparse data in the Reuters-21568 test collection. To achieve a meaningful visualization, we introduce a compactly supported convolution kernel similar to filter kernels used in image reconstruction and geostatistics. This filter populates the high-dimensional sparse space with values that interpolate nearby elements and provides insight into the clustering structure. We also extend two-way seriation to deal with online updates of both the row and column spaces and, combined with the convolution kernel, demonstrate a three-dimensional visualization of dynamics.

Theme

Semantisches Umfeld in Indexierung u. Retrieval

0.17629223 = product of:
  0.21155068 = sum of:
    0.08315867 = weight(_text_:umfeld in 3366) [ClassicSimilarity], result of:
      0.08315867 = score(doc=3366,freq=2.0), product of:
        0.26788878 = queryWeight, product of:
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.047673445 = queryNorm
        0.31042236 = fieldWeight in 3366, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.0390625 = fieldNorm(doc=3366)
    0.01193624 = weight(_text_:in in 3366) [ClassicSimilarity], result of:
      0.01193624 = score(doc=3366,freq=12.0), product of:
        0.06484802 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.047673445 = queryNorm
        0.18406484 = fieldWeight in 3366, product of:
          3.4641016 = tf(freq=12.0), with freq of:
            12.0 = termFreq=12.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.0390625 = fieldNorm(doc=3366)
    0.07616932 = weight(_text_:indexierung in 3366) [ClassicSimilarity], result of:
      0.07616932 = score(doc=3366,freq=2.0), product of:
        0.25638393 = queryWeight, product of:
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.047673445 = queryNorm
        0.29709086 = fieldWeight in 3366, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.0390625 = fieldNorm(doc=3366)
    0.028237537 = weight(_text_:u in 3366) [ClassicSimilarity], result of:
      0.028237537 = score(doc=3366,freq=2.0), product of:
        0.15610404 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.047673445 = queryNorm
        0.1808892 = fieldWeight in 3366, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.0390625 = fieldNorm(doc=3366)
    0.012048915 = product of:
      0.02409783 = sum of:
        0.02409783 = weight(_text_:retrieval in 3366) [ClassicSimilarity], result of:
          0.02409783 = score(doc=3366,freq=2.0), product of:
            0.14420812 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.047673445 = queryNorm
            0.16710453 = fieldWeight in 3366, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.0390625 = fieldNorm(doc=3366)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Abstract

Documents in rich text corpora usually contain multiple facets of information. For example, an article about a specific disease often consists of different facets such as symptom, treatment, cause, diagnosis, prognosis, and prevention. Thus, documents may have different relations based on different facets. Powerful search tools have been developed to help users locate lists of individual documents that are most related to specific keywords. However, there is a lack of effective analysis tools that reveal the multifaceted relations of documents within or cross the document clusters. In this paper, we present FacetAtlas, a multifaceted visualization technique for visually analyzing rich text corpora. FacetAtlas combines search technology with advanced visual analytical tools to convey both global and local patterns simultaneously. We describe several unique aspects of FacetAtlas, including (1) node cliques and multifaceted edges, (2) an optimized density map, and (3) automated opacity pattern enhancement for highlighting visual patterns, (4) interactive context switch between facets. In addition, we demonstrate the power of FacetAtlas through a case study that targets patient education in the health care domain. Our evaluation shows the benefits of this work, especially in support of complex multifaceted data analysis.

Theme

Semantisches Umfeld in Indexierung u. Retrieval

0.14034045 = product of:
  0.16840854 = sum of:
    0.066526935 = weight(_text_:umfeld in 6043) [ClassicSimilarity], result of:
      0.066526935 = score(doc=6043,freq=2.0), product of:
        0.26788878 = queryWeight, product of:
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.047673445 = queryNorm
        0.2483379 = fieldWeight in 6043, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.03125 = fieldNorm(doc=6043)
    0.008716998 = weight(_text_:in in 6043) [ClassicSimilarity], result of:
      0.008716998 = score(doc=6043,freq=10.0), product of:
        0.06484802 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.047673445 = queryNorm
        0.13442196 = fieldWeight in 6043, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.03125 = fieldNorm(doc=6043)
    0.060935456 = weight(_text_:indexierung in 6043) [ClassicSimilarity], result of:
      0.060935456 = score(doc=6043,freq=2.0), product of:
        0.25638393 = queryWeight, product of:
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.047673445 = queryNorm
        0.23767269 = fieldWeight in 6043, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.03125 = fieldNorm(doc=6043)
    0.022590028 = weight(_text_:u in 6043) [ClassicSimilarity], result of:
      0.022590028 = score(doc=6043,freq=2.0), product of:
        0.15610404 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.047673445 = queryNorm
        0.14471136 = fieldWeight in 6043, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.03125 = fieldNorm(doc=6043)
    0.009639132 = product of:
      0.019278264 = sum of:
        0.019278264 = weight(_text_:retrieval in 6043) [ClassicSimilarity], result of:
          0.019278264 = score(doc=6043,freq=2.0), product of:
            0.14420812 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.047673445 = queryNorm
            0.13368362 = fieldWeight in 6043, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.03125 = fieldNorm(doc=6043)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Abstract

Die Süddeutsche Zeitung (SZ) verfügt seit ihrer Gründung 1945 über ein Pressearchiv, das die Texte der eigenen Redakteure und zahlreicher nationaler und internationaler Publikationen dokumentiert und für Recherchezwecke bereitstellt. Die DIZ-Pressedatenbank (www.medienport.de) ermöglicht die browserbasierte Recherche für Redakteure und externe Kunden im Intra- und Internet und die kundenspezifischen Content Feeds für Verlage, Rundfunkanstalten und Portale. Die DIZ-Pressedatenbank enthält z. Zt. 7,8 Millionen Artikel, die jeweils als HTML oder PDF abrufbar sind. Täglich kommen ca. 3.500 Artikel hinzu, von denen ca. 1.000 durch Dokumentare inhaltlich erschlossen werden. Die Informationserschließung erfolgt im DIZ nicht durch die Vergabe von Schlagwörtern am Dokument, sondern durch die Verlinkung der Artikel mit "virtuellen Mappen", den Dossiers. Insgesamt enthält die DIZ-Pressedatenbank ca. 90.000 Dossiers, die untereinander zum "DIZ-Wissensnetz" verlinkt sind. DIZ definiert das Wissensnetz als Alleinstellungsmerkmal und wendet beträchtliche personelle Ressourcen für die Aktualisierung und Qualitätssicherung der Dossiers auf. Im Zuge der Medienkrise mussten sich DIZ der Herausforderung stellen, bei sinkenden Lektoratskapazitäten die Qualität der Informationserschließung im Input zu erhalten. Auf der Outputseite gilt es, eine anspruchsvolle Zielgruppe - u.a. die Redakteure der Süddeutschen Zeitung - passgenau und zeitnah mit den Informationen zu versorgen, die sie für ihre tägliche Arbeit benötigt. Bezogen auf die Ausgangssituation in der Dokumentation der Süddeutschen Zeitung identifizierte DIZ drei Ansatzpunkte, wie die Aufwände auf der Inputseite (Lektorat) zu optimieren sind und gleichzeitig auf der Outputseite (Recherche) das Wissensnetz besser zu vermarkten ist: - (Teil-)Automatische Klassifizierung von Pressetexten (Vorschlagwesen) - Visualisierung des Wissensnetzes - Neue Retrievalmöglichkeiten (Ähnlichkeitssuche, Clustering) Im Bereich "Visualisierung" setzt DIZ auf den Net-Navigator von intelligent views, eine interaktive Visualisierung allgemeiner Graphen, basierend auf einem physikalischen Modell. In den Bereichen automatische Klassifizierung, Ähnlichkeitssuche und Clustering hat DIZ sich für das Produkt nextBot der Firma Brainbot entschieden.

Source

Spezialbibliotheken zwischen Auftrag und Ressourcen: 6.-9. September 2005 in München, 30. Arbeits- und Fortbildungstagung der ASpB e.V. / Sektion 5 im Deutschen Bibliotheksverband. Red.: M. Brauer

Theme

Semantisches Umfeld in Indexierung u. Retrieval

0.101432286 = product of:
  0.12171875 = sum of:
    0.041579336 = weight(_text_:umfeld in 1211) [ClassicSimilarity], result of:
      0.041579336 = score(doc=1211,freq=2.0), product of:
        0.26788878 = queryWeight, product of:
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.047673445 = queryNorm
        0.15521118 = fieldWeight in 1211, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.01953125 = fieldNorm(doc=1211)
    0.010896247 = weight(_text_:in in 1211) [ClassicSimilarity], result of:
      0.010896247 = score(doc=1211,freq=40.0), product of:
        0.06484802 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.047673445 = queryNorm
        0.16802745 = fieldWeight in 1211, product of:
          6.3245554 = tf(freq=40.0), with freq of:
            40.0 = termFreq=40.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.01953125 = fieldNorm(doc=1211)
    0.03808466 = weight(_text_:indexierung in 1211) [ClassicSimilarity], result of:
      0.03808466 = score(doc=1211,freq=2.0), product of:
        0.25638393 = queryWeight, product of:
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.047673445 = queryNorm
        0.14854543 = fieldWeight in 1211, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.377919 = idf(docFreq=554, maxDocs=44218)
          0.01953125 = fieldNorm(doc=1211)
    0.014118768 = weight(_text_:u in 1211) [ClassicSimilarity], result of:
      0.014118768 = score(doc=1211,freq=2.0), product of:
        0.15610404 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.047673445 = queryNorm
        0.0904446 = fieldWeight in 1211, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.01953125 = fieldNorm(doc=1211)
    0.017039739 = product of:
      0.034079477 = sum of:
        0.034079477 = weight(_text_:retrieval in 1211) [ClassicSimilarity], result of:
          0.034079477 = score(doc=1211,freq=16.0), product of:
            0.14420812 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.047673445 = queryNorm
            0.23632148 = fieldWeight in 1211, product of:
              4.0 = tf(freq=16.0), with freq of:
                16.0 = termFreq=16.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.01953125 = fieldNorm(doc=1211)
      0.5 = coord(1/2)
  0.8333333 = coord(5/6)

Abstract

In this article we present a method for retrieving documents from a digital library through a visual interface based on automatically generated concepts. We used a vocabulary generation algorithm to generate a set of concepts for the digital library and a technique called the max-min distance technique to cluster them. Additionally, the concepts were visualized in a spring embedding graph layout to depict the semantic relationship among them. The resulting graph layout serves as an aid to users for retrieving documents. An online archive containing the contents of D-Lib Magazine from July 1995 to May 2002 was used to test the utility of an implemented retrieval and visualization system. We believe that the method developed and tested can be applied to many different domains to help users get a better understanding of online document collections and to minimize users' cognitive load during execution of search tasks. Over the past few years, the volume of information available through the World Wide Web has been expanding exponentially. Never has so much information been so readily available and shared among so many people. Unfortunately, the unstructured nature and huge volume of information accessible over networks have made it hard for users to sift through and find relevant information. To deal with this problem, information retrieval (IR) techniques have gained more intensive attention from both industrial and academic researchers. Numerous IR techniques have been developed to help deal with the information overload problem. These techniques concentrate on mathematical models and algorithms for retrieval. Popular IR models such as the Boolean model, the vector-space model, the probabilistic model and their variants are well established.
From the user's perspective, however, it is still difficult to use current information retrieval systems. Users frequently have problems expressing their information needs and translating those needs into queries. This is partly due to the fact that information needs cannot be expressed appropriately in systems terms. It is not unusual for users to input search terms that are different from the index terms information systems use. Various methods have been proposed to help users choose search terms and articulate queries. One widely used approach is to incorporate into the information system a thesaurus-like component that represents both the important concepts in a particular subject area and the semantic relationships among those concepts. Unfortunately, the development and use of thesauri is not without its own problems. The thesaurus employed in a specific information system has often been developed for a general subject area and needs significant enhancement to be tailored to the information system where it is to be used. This thesaurus development process, if done manually, is both time consuming and labor intensive. Usage of a thesaurus in searching is complex and may raise barriers for the user. For illustration purposes, let us consider two scenarios of thesaurus usage. In the first scenario the user inputs a search term and the thesaurus then displays a matching set of related terms. Without an overview of the thesaurus - and without the ability to see the matching terms in the context of other terms - it may be difficult to assess the quality of the related terms in order to select the correct term. In the second scenario the user browses the whole thesaurus, which is organized as in an alphabetically ordered list. The problem with this approach is that the list may be long, and neither does it show users the global semantic relationship among all the listed terms.
Nevertheless, because thesaurus use has shown to improve retrieval, for our method we integrate functions in the search interface that permit users to explore built-in search vocabularies to improve retrieval from digital libraries. Our method automatically generates the terms and their semantic relationships representing relevant topics covered in a digital library. We call these generated terms the "concepts", and the generated terms and their semantic relationships we call the "concept space". Additionally, we used a visualization technique to display the concept space and allow users to interact with this space. The automatically generated term set is considered to be more representative of subject area in a corpus than an "externally" imposed thesaurus, and our method has the potential of saving a significant amount of time and labor for those who have been manually creating thesauri as well. Information visualization is an emerging discipline and developed very quickly in the last decade. With growing volumes of documents and associated complexities, information visualization has become increasingly important. Researchers have found information visualization to be an effective way to use and understand information while minimizing a user's cognitive load. Our work was based on an algorithmic approach of concept discovery and association. Concepts are discovered using an algorithm based on an automated thesaurus generation procedure. Subsequently, similarities among terms are computed using the cosine measure, and the associations among terms are established using a method known as max-min distance clustering. The concept space is then visualized in a spring embedding graph, which roughly shows the semantic relationships among concepts in a 2-D visual representation. The semantic space of the visualization is used as a medium for users to retrieve the desired documents. In the remainder of this article, we present our algorithmic approach of concept generation and clustering, followed by description of the visualization technique and interactive interface. The paper ends with key conclusions and discussions on future work.

Theme

Semantisches Umfeld in Indexierung u. Retrieval

0.04225879 = product of:
  0.12677637 = sum of:
    0.0790651 = weight(_text_:u in 549) [ClassicSimilarity], result of:
      0.0790651 = score(doc=549,freq=2.0), product of:
        0.15610404 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.047673445 = queryNorm
        0.50648975 = fieldWeight in 549, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.109375 = fieldNorm(doc=549)
    0.047711264 = product of:
      0.09542253 = sum of:
        0.09542253 = weight(_text_:retrieval in 549) [ClassicSimilarity], result of:
          0.09542253 = score(doc=549,freq=4.0), product of:
            0.14420812 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.047673445 = queryNorm
            0.6617001 = fieldWeight in 549, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.109375 = fieldNorm(doc=549)
      0.5 = coord(1/2)
  0.33333334 = coord(2/6)

Source

Interactive information seeking, behaviour and retrieval. Eds.: Ruthven, I. u. D. Kelly

0.04004946 = product of:
  0.08009892 = sum of:
    0.016710738 = weight(_text_:in in 232) [ClassicSimilarity], result of:
      0.016710738 = score(doc=232,freq=12.0), product of:
        0.06484802 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.047673445 = queryNorm
        0.2576908 = fieldWeight in 232, product of:
          3.4641016 = tf(freq=12.0), with freq of:
            12.0 = termFreq=12.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.0546875 = fieldNorm(doc=232)
    0.03953255 = weight(_text_:u in 232) [ClassicSimilarity], result of:
      0.03953255 = score(doc=232,freq=2.0), product of:
        0.15610404 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.047673445 = queryNorm
        0.25324488 = fieldWeight in 232, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.0546875 = fieldNorm(doc=232)
    0.023855632 = product of:
      0.047711264 = sum of:
        0.047711264 = weight(_text_:retrieval in 232) [ClassicSimilarity], result of:
          0.047711264 = score(doc=232,freq=4.0), product of:
            0.14420812 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.047673445 = queryNorm
            0.33085006 = fieldWeight in 232, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.0546875 = fieldNorm(doc=232)
      0.5 = coord(1/2)
  0.5 = coord(3/6)

Abstract

This paper examines some traditional information searching methods and their role in Hungarian OPACs. What challenges are there in the digital and online environment? How do users work with them and do they give users satisfactory results? What kinds of techniques are users employing? In this paper I examine the user interfaces of UDC, thesauri, subject headings etc. in the Hungarian library. The key question of the paper is whether a universal system or local solutions is the best approach for searching in the digital environment.

Series

Advances in knowledge organization; vol.10

Source

Knowledge organization for a global learning society: Proceedings of the 9th International ISKO Conference, 4-7 July 2006, Vienna, Austria. Hrsg.: G. Budin, C. Swertz u. K. Mitgutsch

Theme

Klassifikationssysteme im Online-Retrieval

0.03663955 = product of:
  0.10991865 = sum of:
    0.09979041 = weight(_text_:umfeld in 4991) [ClassicSimilarity], result of:
      0.09979041 = score(doc=4991,freq=2.0), product of:
        0.26788878 = queryWeight, product of:
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.047673445 = queryNorm
        0.37250686 = fieldWeight in 4991, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.046875 = fieldNorm(doc=4991)
    0.010128236 = weight(_text_:in in 4991) [ClassicSimilarity], result of:
      0.010128236 = score(doc=4991,freq=6.0), product of:
        0.06484802 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.047673445 = queryNorm
        0.1561842 = fieldWeight in 4991, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.046875 = fieldNorm(doc=4991)
  0.33333334 = coord(2/6)

Abstract

Je mehr Informationen gleichzeitig, übersichtlich dargestellt und überwacht werden können, desto höher wird der Informations-Nutzen für einen Besucher oder potentiellen Kunden von ihnen sein. Da wir in einer Zeit der Informationsüberflutung leben, hilft uns das Information-Panel in Zukunft als multimediales Informationssystem. Ein Interface ist in unserem heutigen multimedialen Umfeld ein Bestandteil eines Systems, das dem Austausch von Informationen dient. Durch Information-Panels (sog. I-Panels) kann der Mensch mit Geräten interagieren, indem er sich wahlweise die für ihn masßgeschneiderten Informationen darstellen lässt. Für den Interface-Theoretiker Artur P. Schmidt können Information-Panels heute als eine Art Enzyklopädie für Informationen und Nachrichten aller Art dienen, wie sein Internet-Projekt "Der Wissensnavigator" belegt. Das Vorbild für multimediale Panels ist die geordnete Verbindung von Inhalten. Das Information-Panel als MenschMaschine-Interface kann zum "Punkt der Begegnung" oder "Kopplung zwischen zwei oder mehr Systemen" werden. Es übernimmt eine Übersetzung- und Vermittlungsfunktion.

0.03663955 = product of:
  0.10991865 = sum of:
    0.09979041 = weight(_text_:umfeld in 3067) [ClassicSimilarity], result of:
      0.09979041 = score(doc=3067,freq=2.0), product of:
        0.26788878 = queryWeight, product of:
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.047673445 = queryNorm
        0.37250686 = fieldWeight in 3067, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.619245 = idf(docFreq=435, maxDocs=44218)
          0.046875 = fieldNorm(doc=3067)
    0.010128236 = weight(_text_:in in 3067) [ClassicSimilarity], result of:
      0.010128236 = score(doc=3067,freq=6.0), product of:
        0.06484802 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.047673445 = queryNorm
        0.1561842 = fieldWeight in 3067, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.046875 = fieldNorm(doc=3067)
  0.33333334 = coord(2/6)

Abstract

Zielsetzung - Aufgrund der rasch wachsenden Anzahl an Publikationen zur Informationskompetenz ergibt sich eine zunehmende Notwendigkeit von Überblicksarbeiten. Dieser Betrag hat das Ziel, mittels Science Mapping einen Überblick über die wissenschaftliche Literatur zu schaffen. Forschungsmethoden - Unter Verwendung von BibExcel und VOSviewer wurden 1589 wissenschaftliche Artikel analysiert und drei verschiedene Visualisierungen erstellt. Ergebnisse - Es gibt ein relativ großes internationales Autorennetzwerk, in welchem die meisten Hauptakteure miteinander in Verbindung stehen. Die wichtigsten Schwerpunkte sind: Vermittlung von Informationskompetenz im Hochschulbereich, Prozessmodelle zum Informationssuchverhalten, Phänomenographie und Informationskompetenz im beruflichen Umfeld. Schlussfolgerungen - Viele der Schwerpunkte wurden schon vereinzelt in Review-Artikeln genannt, aber noch nie via Science Mapping zusammen visualisiert. Somit ermöglicht diese Arbeit erstmalig ein »big picture« der Produktionslandschaft. Künftige Arbeiten könnten die Literatur mit anderen Science Mapping Tools bzw. Visualisierungstechniken untersuchen.

0.035022646 = product of:
  0.07004529 = sum of:
    0.0136442585 = weight(_text_:in in 231) [ClassicSimilarity], result of:
      0.0136442585 = score(doc=231,freq=8.0), product of:
        0.06484802 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.047673445 = queryNorm
        0.21040362 = fieldWeight in 231, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.0546875 = fieldNorm(doc=231)
    0.03953255 = weight(_text_:u in 231) [ClassicSimilarity], result of:
      0.03953255 = score(doc=231,freq=2.0), product of:
        0.15610404 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.047673445 = queryNorm
        0.25324488 = fieldWeight in 231, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.0546875 = fieldNorm(doc=231)
    0.016868481 = product of:
      0.033736963 = sum of:
        0.033736963 = weight(_text_:retrieval in 231) [ClassicSimilarity], result of:
          0.033736963 = score(doc=231,freq=2.0), product of:
            0.14420812 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.047673445 = queryNorm
            0.23394634 = fieldWeight in 231, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.0546875 = fieldNorm(doc=231)
      0.5 = coord(1/2)
  0.5 = coord(3/6)

Abstract

Geospatial information technologies revolutionize the way we have traditionally approached navigation and browsing in information systems. Colorful graphics, statistical summaries, geospatial relationships of underlying collections make them attractive for text retrieval systems. This paper examines the nature of georeferenced information in academic library catalogs organized according to the Library of Congress Classification (LCC) with the goal of understanding their implications for geovisualization of library collections.

Series

Advances in knowledge organization; vol.10

Source

Knowledge organization for a global learning society: Proceedings of the 9th International ISKO Conference, 4-7 July 2006, Vienna, Austria. Hrsg.: G. Budin, C. Swertz u. K. Mitgutsch

0.032229163 = product of:
  0.09668748 = sum of:
    0.067770086 = weight(_text_:u in 2961) [ClassicSimilarity], result of:
      0.067770086 = score(doc=2961,freq=2.0), product of:
        0.15610404 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.047673445 = queryNorm
        0.43413407 = fieldWeight in 2961, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.09375 = fieldNorm(doc=2961)
    0.028917395 = product of:
      0.05783479 = sum of:
        0.05783479 = weight(_text_:retrieval in 2961) [ClassicSimilarity], result of:
          0.05783479 = score(doc=2961,freq=2.0), product of:
            0.14420812 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.047673445 = queryNorm
            0.40105087 = fieldWeight in 2961, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.09375 = fieldNorm(doc=2961)
      0.5 = coord(1/2)
  0.33333334 = coord(2/6)

Source

Empirical foundation of information and software science. Ed.: J.C. Agarwal u. P. Zunde

0.031562835 = product of:
  0.0946885 = sum of:
    0.0058475393 = weight(_text_:in in 1709) [ClassicSimilarity], result of:
      0.0058475393 = score(doc=1709,freq=2.0), product of:
        0.06484802 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.047673445 = queryNorm
        0.09017298 = fieldWeight in 1709, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.046875 = fieldNorm(doc=1709)
    0.08884096 = sum of:
      0.0500864 = weight(_text_:retrieval in 1709) [ClassicSimilarity], result of:
        0.0500864 = score(doc=1709,freq=6.0), product of:
          0.14420812 = queryWeight, product of:
            3.024915 = idf(docFreq=5836, maxDocs=44218)
            0.047673445 = queryNorm
          0.34732026 = fieldWeight in 1709, product of:
            2.4494898 = tf(freq=6.0), with freq of:
              6.0 = termFreq=6.0
            3.024915 = idf(docFreq=5836, maxDocs=44218)
            0.046875 = fieldNorm(doc=1709)
      0.03875456 = weight(_text_:22 in 1709) [ClassicSimilarity], result of:
        0.03875456 = score(doc=1709,freq=2.0), product of:
          0.16694428 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.047673445 = queryNorm
          0.23214069 = fieldWeight in 1709, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046875 = fieldNorm(doc=1709)
  0.33333334 = coord(2/6)

Abstract

Methoden und Techniken der Informationsvisualisierung werden seit ungefähr zwanzig Jahren im Bereich der Informationssuche eingesetzt. In dieser Literaturstudie werden ausgewählte Visualisierungsanwendungen der letzten Jahre vorgestellt. Sie betreffen zum einen den Retrievalprozess, das Boolesche Retrieval, die facettierte Suche, Dokumentbeziehungen, die Zufallssuche und Ergebnisanzeige, zum anderen spezielle Anwendungen wie die kartenbasierte und adaptive Visualisierung, Zitationsnetzwerke und Wissensordnungen. Die Einsatzszenarien für Applikationen der Informationsvisualisierung sind vielfältig. Sie reichen von mobilen kleinformatigen Anwendungen bis zu großformatigen Darstellungen auf hochauflösenden Bildschirmen, von integrativen Arbeitsplätzen für den einzelnen Nutzer bis zur Nutzung interaktiver Oberflächen für das kollaborative Retrieval. Das Konzept der Blended Library wird vorgestellt. Die Übertragbarkeit von Visualisierungsanwendungen auf Bibliothekskataloge wird im Hinblick auf die Nutzung des Kataloginputs und des Angebots an Sucheinstiegen geprüft. Perspektivische Überlegungen zu zukünftigen Entwicklungsschritten von Bibliothekskatalogen sowie zum Einfluss von Visualisierungsanwendungen auf die Informationspraxis werden angestellt.

Date

4. 2.2015 9:22:39

0.030709619 = product of:
  0.061419237 = sum of:
    0.013075498 = weight(_text_:in in 5996) [ClassicSimilarity], result of:
      0.013075498 = score(doc=5996,freq=10.0), product of:
        0.06484802 = queryWeight, product of:
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.047673445 = queryNorm
        0.20163295 = fieldWeight in 5996, product of:
          3.1622777 = tf(freq=10.0), with freq of:
            10.0 = termFreq=10.0
          1.3602545 = idf(docFreq=30841, maxDocs=44218)
          0.046875 = fieldNorm(doc=5996)
    0.033885043 = weight(_text_:u in 5996) [ClassicSimilarity], result of:
      0.033885043 = score(doc=5996,freq=2.0), product of:
        0.15610404 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.047673445 = queryNorm
        0.21706703 = fieldWeight in 5996, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.046875 = fieldNorm(doc=5996)
    0.014458697 = product of:
      0.028917395 = sum of:
        0.028917395 = weight(_text_:retrieval in 5996) [ClassicSimilarity], result of:
          0.028917395 = score(doc=5996,freq=2.0), product of:
            0.14420812 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.047673445 = queryNorm
            0.20052543 = fieldWeight in 5996, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.046875 = fieldNorm(doc=5996)
      0.5 = coord(1/2)
  0.5 = coord(3/6)

Abstract

Bei der Frage nach der Ästhetik in der Ergonomie hat sich in den letzten Jahren ein Wandel vollzogen. Noch in den 1990er Jahren missachteten Ergonomen ästhetische Faktoren in der Gestaltung von Benutzungsschnittstellen weitgehend. Inzwischen hat sich allerdings das gegenseitige Interesse von Ergonomen und Designern verstärkt, so dass sich Herausgeber und Autor entschlossen, mit dem vorliegenden Band eine erweiterte und aktualisierte Ausgabe der vergriffenen ersten Auflage vorzustellen. Einige Teile der Erstauflage sind gestrafft, andere aktualisiert. Ferner wurden Teile hinzugefügt, die den aktuellen Stand der Thematik in Theorie und Praxis widerspiegeln. Der nun vorliegende Forschungsbericht enthält über 50 neue Textseiten, 39 neue Abbildungen und fast 90 neu eingearbeitete Referenzen. Weitere Informationen zum Inhalt von Buch und CD-ROM sowie eine tabellarische Gbersicht über die Veränderungen gegenüber der ersten Auflage finden sich im Internet unter www.gesis.org/Information/Forschungsuebersichten/Forschungsberichte/Visualisierung2.htm, Informationen zur (vergriffenen) ersten Auflage unter www.gesis.org/Information/Forschungsuebersichten/Forschungsberichte/Visualisierung.htm.

Issue

2., überarb. u. erw. Aufl.