-
Stempfhuber, M.; Zapilko, B.: Modelling text-fact-integration in digital libraries (2009)
0.02
0.022432221 = product of:
0.05608055 = sum of:
0.02060168 = product of:
0.04120336 = sum of:
0.04120336 = weight(_text_:problems in 3393) [ClassicSimilarity], result of:
0.04120336 = score(doc=3393,freq=2.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.27361554 = fieldWeight in 3393, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.046875 = fieldNorm(doc=3393)
0.5 = coord(1/2)
0.03547887 = product of:
0.07095774 = sum of:
0.07095774 = weight(_text_:etc in 3393) [ClassicSimilarity], result of:
0.07095774 = score(doc=3393,freq=2.0), product of:
0.19761753 = queryWeight, product of:
5.4164915 = idf(docFreq=533, maxDocs=44218)
0.036484417 = queryNorm
0.35906604 = fieldWeight in 3393, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.4164915 = idf(docFreq=533, maxDocs=44218)
0.046875 = fieldNorm(doc=3393)
0.5 = coord(1/2)
0.4 = coord(2/5)
- Abstract
- Digital Libraries currently face the challenge of integrating many different types of research information (e.g. publications, primary data, expert's profiles, institutional profiles, project information etc.) according to their scientific users' needs. To date no general, integrated model for knowledge organization and retrieval in Digital Libraries exists. This causes the problem of structural and semantic heterogeneity due to the wide range of metadata standards, indexing vocabularies and indexing approaches used for different types of information. The research presented in this paper focuses on areas in which activities are being undertaken in the field of Digital Libraries in order to treat semantic interoperability problems. We present a model for the integrated retrieval of factual and textual data which combines multiple approaches to semantic interoperability und sets them into context. Embedded in the research cycle, traditional content indexing methods for publications meet the newer, but rarely used ontology-based approaches which seem to be better suited for representing complex information like the one contained in survey data. The benefits of our model are (1) easy re-use of available knowledge organisation systems and (2) reduced efforts for domain modelling with ontologies.
-
Neuroth, H.; Pianos, T.: VASCODA: a German scientific portal for cross-searching distributed digital resource collections (2003)
0.02
0.02012331 = product of:
0.10061655 = sum of:
0.10061655 = sum of:
0.07095774 = weight(_text_:etc in 2420) [ClassicSimilarity], result of:
0.07095774 = score(doc=2420,freq=2.0), product of:
0.19761753 = queryWeight, product of:
5.4164915 = idf(docFreq=533, maxDocs=44218)
0.036484417 = queryNorm
0.35906604 = fieldWeight in 2420, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.4164915 = idf(docFreq=533, maxDocs=44218)
0.046875 = fieldNorm(doc=2420)
0.02965881 = weight(_text_:22 in 2420) [ClassicSimilarity], result of:
0.02965881 = score(doc=2420,freq=2.0), product of:
0.12776221 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036484417 = queryNorm
0.23214069 = fieldWeight in 2420, 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=2420)
0.2 = coord(1/5)
- Abstract
- The German information science community - with the support of the two main funding agencies in Germany - will develop a scientific portal, vascoda, for cross-searching distributed metadata collections. In platitudinous words, one of the services of vascoda is going to be a ldquoGooglerdquo-like search for the academic community, an easy to use, yet sophisticated search-engine to supply information on high-quality resources from different media and technical environments. Reaching this objective requires considerable standardisation activity amongst the main players to harmonise the already existing services (e.g. regarding metadata, protocols, etc.). The co-operation amongst the participants including both of the funding agencies is creating a unique team-work situation in Germany thus strengthening the information science community.
- Source
- Research and advanced technology for digital libraries : 7th European Conference, proceedings / ECDL 2003, Trondheim, Norway, August 17-22, 2003
-
Severiens, T.; Thiemann, C.: RDF database for PhysNet and similar portals (2006)
0.01
0.009461033 = product of:
0.047305163 = sum of:
0.047305163 = product of:
0.094610326 = sum of:
0.094610326 = weight(_text_:etc in 245) [ClassicSimilarity], result of:
0.094610326 = score(doc=245,freq=2.0), product of:
0.19761753 = queryWeight, product of:
5.4164915 = idf(docFreq=533, maxDocs=44218)
0.036484417 = queryNorm
0.47875473 = fieldWeight in 245, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.4164915 = idf(docFreq=533, maxDocs=44218)
0.0625 = fieldNorm(doc=245)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Abstract
- PhysNet (www.physnet.net) is a portal for Physics run since 1995 and continuously being developed; it today uses an OWLLite ontology and mySQL database for storing triples with the facts, such as department information, postal addresses, GPS coordinates, URLs of publication repositories, etc. The article focuses on the structure and the development of the underlying ontology; it also gives a detailed overview of an online web-based editorial tool, to maintain the facts database.
-
Hudon, M.; Mas, E.S.: Structure, logic, and semantics for Web-based collections in education (2006)
0.01
0.007095774 = product of:
0.03547887 = sum of:
0.03547887 = product of:
0.07095774 = sum of:
0.07095774 = weight(_text_:etc in 4391) [ClassicSimilarity], result of:
0.07095774 = score(doc=4391,freq=2.0), product of:
0.19761753 = queryWeight, product of:
5.4164915 = idf(docFreq=533, maxDocs=44218)
0.036484417 = queryNorm
0.35906604 = fieldWeight in 4391, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.4164915 = idf(docFreq=533, maxDocs=44218)
0.046875 = fieldNorm(doc=4391)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Abstract
- Results of a project focusing on six Web-based collections in education. Our analysis of homegrown classification structures considers three dimensions. "Structure" is described through quantitative data (e.g. Number of main categories, Number of hierarchical levels, etc.). "Logic" concentrates on two aspects of the subdividing process: division principle, and type of hierarchical relation. "Semantics" relates to concepts and their representation in the form of terms. In our sample, the classification structures are hierarchical, not overly complex and not very specific. The choice, arrangement and sequence of classes are logical. Conceptual and terminological inconsistencies are due to significant gaps in conceptual coverage and lack of terminological control.
-
MacLeod, R.: Promoting a subject gateway : a case study from EEVL (Edinburgh Engineering Virtual Library) (2000)
0.01
0.0069906483 = product of:
0.03495324 = sum of:
0.03495324 = product of:
0.06990648 = sum of:
0.06990648 = weight(_text_:22 in 4872) [ClassicSimilarity], result of:
0.06990648 = score(doc=4872,freq=4.0), product of:
0.12776221 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036484417 = queryNorm
0.54716086 = fieldWeight in 4872, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=4872)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Date
- 22. 6.2002 19:40:22
-
Subject gateways (2000)
0.01
0.0069203894 = product of:
0.034601945 = sum of:
0.034601945 = product of:
0.06920389 = sum of:
0.06920389 = weight(_text_:22 in 6483) [ClassicSimilarity], result of:
0.06920389 = score(doc=6483,freq=2.0), product of:
0.12776221 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036484417 = queryNorm
0.5416616 = fieldWeight in 6483, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.109375 = fieldNorm(doc=6483)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Date
- 22. 6.2002 19:43:01
-
Lokales Bibliotheksportal "SISIS-InfoGuide" (2005)
0.01
0.0066899606 = product of:
0.033449803 = sum of:
0.033449803 = product of:
0.066899605 = sum of:
0.066899605 = weight(_text_:etc in 3217) [ClassicSimilarity], result of:
0.066899605 = score(doc=3217,freq=4.0), product of:
0.19761753 = queryWeight, product of:
5.4164915 = idf(docFreq=533, maxDocs=44218)
0.036484417 = queryNorm
0.33853072 = fieldWeight in 3217, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
5.4164915 = idf(docFreq=533, maxDocs=44218)
0.03125 = fieldNorm(doc=3217)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Content
- "Mit SISIS-InfoGuide stellt die Sisis Informationssysteme GmbH Bibliotheken eine attraktive Lösung zum Aufbau eines lokalen Informationsportals zur Verfügung. Das Portal verbindet die Stärken einer Meta-Suchmaschine mit den Vorteilen komfortabler Services einer benutzerorientierten Bibliothek. SISIS-InfoGuide (www.sisis.de/infoguide) ermöglicht umfassende Recherchemöglichkeiten im lokalen Bestand wie auch in verschiedensten externen Informationsquellen und das rund um die Uhr und ohne die gewohnte Suchoberfläche zu verlassen. Die Suchergebnisse werden benutzerfreundlich und übersichtlich präsentiert. Die benutzerbezogene Verfügbarkeitsprüfung weist durch entsprechende Meldungstexte den schnellsten Weg zum gewünschten Medium oder Dokument. Mit der Erweiterung der Recherchemöglichkeiten und der Integration von Dienstleistungen der Fremdsysteme ergeben sich über das lokale Angebot hinaus natürlich auch erweiterte Bestell- und Lieferfunktionen. Die in SISIS-InfoGuide integrierten Schnittstellen erlauben es, direkt aus SISIS-InfoGuide Dokumentenlieferdienste wie subito, Volltextanzeige, Fernleihfunktionen oder andere OpenURL-Dienste wie z.B. SFX zu nutzen. Die Option der personalisierten Anmeldung eröffnet dem Benutzer eine Vielzahl individueller Einstellungsmöglichkeiten. Die Voreinstellung des Suchmodus (einfach, erweitert, thematisch) ist ebenso wählbar wie die Anzahl und Art der zu durchsuchenden Datenquellen. Hierzu kann er aus der Liste, der von der Bibliothek konfigurierten Datenquellen wie z.B. Bibliothekskatalogen, Onlinedatenbanken, elektronischen Zeitschriften, Online-Buchhändlern etc., ein für seine Suche relevantes Profil zusammenstellen und für weitere Sitzungen abspeichern. Als weitere Einstellungsvarianten gehören dazu: Das Speichern von Merklisten, das Speichern der Suchhistorie und das Anlegen und Bearbeiten von Suchdiensten, die ihn automatisch über neue Treffer informieren. Auf diese Weise kann er sich für seine Suche seine ganz persönliche Wunschumgebung ("Mylibrary") einrichten. Die bereits im SISIS-SunRise webOPAC verfügbaren Selbstbedienungsfunktionen (Kontoübersicht, Möglichkeiten der Bestellung und Verlängerung von entliehenen Medien etc.), erweitert SISIS-InfoGuide um weitere individuelle Dienste. Zusätzliche SISIS-InfoGuide Funktionen wie "Aktuelles" und "weitere Angebote" lassen der Bibliothek freie Hand für Öffentlichkeitsarbeit, individuelle Informationsangebote, Veranstaltungshinweise, Auskunftsdienste oder interessante Links im Sinne der Bibliothek und ihrer Kunden. "Auskunftsdienst" und "Anschaffungsvorschläge" laden den Benutzer zum Dialog mit der Bibliothek ein. Viele verschiedene Dienste - ein Einstieg, intuitive Benutzerführung und Direkthilfen. So fühlt sich jeder Benutzer schnell "zu Hause". Durch die vollständige Integration in die SISIS-SunRise Produktlinie nutzt SISIS-InfoGuide die lokale Benutzerverwaltung für die Rechtevergabe und Kontoverwaltung und kann somit über die SISIS-SunRise Administration an die lokalen Belange angepasst werden."
-
Milanesi, C.: Möglichkeiten der Kooperation im Rahmen von Subject Gateways : das Euler-Projekt im Vergleich mit weiteren europäischen Projekten (2001)
0.01
0.005931762 = product of:
0.02965881 = sum of:
0.02965881 = product of:
0.05931762 = sum of:
0.05931762 = weight(_text_:22 in 4865) [ClassicSimilarity], result of:
0.05931762 = score(doc=4865,freq=2.0), product of:
0.12776221 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036484417 = queryNorm
0.46428138 = fieldWeight in 4865, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.09375 = fieldNorm(doc=4865)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Date
- 22. 6.2002 19:41:59
-
Lim, E.: Southeast Asian subject gateways : an examination of their classification practices (2000)
0.01
0.005931762 = product of:
0.02965881 = sum of:
0.02965881 = product of:
0.05931762 = sum of:
0.05931762 = weight(_text_:22 in 6040) [ClassicSimilarity], result of:
0.05931762 = score(doc=6040,freq=2.0), product of:
0.12776221 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036484417 = queryNorm
0.46428138 = fieldWeight in 6040, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.09375 = fieldNorm(doc=6040)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Date
- 22. 6.2002 19:42:47
-
Haslhofer, B.; Knezevié, P.: ¬The BRICKS digital library infrastructure (2009)
0.01
0.0059131454 = product of:
0.029565725 = sum of:
0.029565725 = product of:
0.05913145 = sum of:
0.05913145 = weight(_text_:etc in 3384) [ClassicSimilarity], result of:
0.05913145 = score(doc=3384,freq=2.0), product of:
0.19761753 = queryWeight, product of:
5.4164915 = idf(docFreq=533, maxDocs=44218)
0.036484417 = queryNorm
0.2992217 = fieldWeight in 3384, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.4164915 = idf(docFreq=533, maxDocs=44218)
0.0390625 = fieldNorm(doc=3384)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Abstract
- Service-oriented architectures, and the wider acceptance of decentralized peer-to-peer architectures enable the transition from integrated, centrally controlled systems to federated and dynamic configurable systems. The benefits for the individual service providers and users are robustness of the system, independence of central authorities and flexibility in the usage of services. This chapter provides details of the European project BRICKS, which aims at enabling integrated access to distributed resources in the Cultural Heritage domain. The target audience is broad and heterogeneous and involves cultural heritage and educational institutions, the research community, industry, and the general public. The project idea is motivated by the fact that the amount of digital information and digitized content is continuously increasing but still much effort has to be expended to discover and access it. The reasons for such a situation are heterogeneous data formats, restricted access, proprietary access interfaces, etc. Typical usage scenarios are integrated queries among several knowledge resource, e.g. to discover all Italian artifacts from the Renaissance in European museums. Another example is to follow the life cycle of historic documents, whose physical copies are distributed all over Europe. A standard method for integrated access is to place all available content and metadata in a central place. Unfortunately, such a solution requires a quite powerful and costly infrastructure if the volume of data is large. Considerations of cost optimization are highly important for Cultural Heritage institutions, especially if they are funded from public money. Therefore, better usage of the existing resources, i.e. a decentralized/P2P approach promises to deliver a significantly less costly system,and does not mean sacrificing too much on the performance side.
-
Price, A.: Five new Danish subject gateways under development (2000)
0.00
0.004943135 = product of:
0.024715675 = sum of:
0.024715675 = product of:
0.04943135 = sum of:
0.04943135 = weight(_text_:22 in 4878) [ClassicSimilarity], result of:
0.04943135 = score(doc=4878,freq=2.0), product of:
0.12776221 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036484417 = queryNorm
0.38690117 = fieldWeight in 4878, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=4878)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Date
- 22. 6.2002 19:41:31
-
Goodchild, M.F.: ¬The Alexandria Digital Library Project : review, assessment, and prospects (2004)
0.00
0.0048070587 = product of:
0.024035294 = sum of:
0.024035294 = product of:
0.048070587 = sum of:
0.048070587 = weight(_text_:problems in 1153) [ClassicSimilarity], result of:
0.048070587 = score(doc=1153,freq=2.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.31921813 = fieldWeight in 1153, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.0546875 = fieldNorm(doc=1153)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Abstract
- The Alexandria Digital Library (ADL) was established in the late 1990s as a response to several perceived problems of traditional map libraries, notably access and organization. By 1999 it had evolved into an operational digital library, offering a well-defined set of services to a broad user community, based on an extensive collection of georeferenced information objects. The vision of ADL continues to evolve, as technology makes new services possible, as its users become more sophisticated and demanding, and as the broader field of geographic information science (GIScience) identifies new avenues for research and application.
-
Qin, J.; Chen, J.: ¬A multi-layered, multi-dimensional representation of digital educational resources (2003)
0.00
0.0041203364 = product of:
0.02060168 = sum of:
0.02060168 = product of:
0.04120336 = sum of:
0.04120336 = weight(_text_:problems in 3818) [ClassicSimilarity], result of:
0.04120336 = score(doc=3818,freq=2.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.27361554 = fieldWeight in 3818, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.046875 = fieldNorm(doc=3818)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Abstract
- Semantic mapping between controlled vocabulary and keywords is the first step towards knowledge-based subject access. This study reports the preliminary result of a semantic mapping experiment for the Gateway to Educational Materials (GEM). A total of 3,555 keywords were mapped with 322 concept names in the GEM controlled vocabulary. The preliminary test to 10,000 metadata records presented widely varied sets of results between the mapped and non-mapped data. The paper discussed linguistic and technical problems encountered in the mapping process and raised issues in the representation technologies and methods, which will lead to future study of knowledge-based access to networked information resources.
-
Gardner, T.; Iannella, R.: Architecture and software solutions (2000)
0.00
0.003954508 = product of:
0.019772539 = sum of:
0.019772539 = product of:
0.039545078 = sum of:
0.039545078 = weight(_text_:22 in 4867) [ClassicSimilarity], result of:
0.039545078 = score(doc=4867,freq=2.0), product of:
0.12776221 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036484417 = queryNorm
0.30952093 = fieldWeight in 4867, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=4867)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Date
- 22. 6.2002 19:38:24
-
Peereboom, M.: DutchESS : Dutch Electronic Subject Service - a Dutch national collaborative effort (2000)
0.00
0.003954508 = product of:
0.019772539 = sum of:
0.019772539 = product of:
0.039545078 = sum of:
0.039545078 = weight(_text_:22 in 4869) [ClassicSimilarity], result of:
0.039545078 = score(doc=4869,freq=2.0), product of:
0.12776221 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036484417 = queryNorm
0.30952093 = fieldWeight in 4869, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=4869)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Date
- 22. 6.2002 19:39:23
-
Campbell, D.: Australian subject gateways : political and strategic issues (2000)
0.00
0.003954508 = product of:
0.019772539 = sum of:
0.019772539 = product of:
0.039545078 = sum of:
0.039545078 = weight(_text_:22 in 4875) [ClassicSimilarity], result of:
0.039545078 = score(doc=4875,freq=2.0), product of:
0.12776221 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036484417 = queryNorm
0.30952093 = fieldWeight in 4875, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=4875)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Date
- 22. 6.2002 19:41:16
-
Dempsey, L.: ¬The subject gateway : experiences and issues based on the emergence of the Resource Discovery Network (2000)
0.00
0.003954508 = product of:
0.019772539 = sum of:
0.019772539 = product of:
0.039545078 = sum of:
0.039545078 = weight(_text_:22 in 628) [ClassicSimilarity], result of:
0.039545078 = score(doc=628,freq=2.0), product of:
0.12776221 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036484417 = queryNorm
0.30952093 = fieldWeight in 628, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=628)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Date
- 22. 6.2002 19:36:13
-
Summann, F.; Lossau, N.: Search engine technology and digital libraries : moving from theory to practice (2004)
0.00
0.0038846903 = product of:
0.019423451 = sum of:
0.019423451 = product of:
0.038846903 = sum of:
0.038846903 = weight(_text_:problems in 1196) [ClassicSimilarity], result of:
0.038846903 = score(doc=1196,freq=4.0), product of:
0.15058853 = queryWeight, product of:
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.036484417 = queryNorm
0.2579672 = fieldWeight in 1196, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.1274753 = idf(docFreq=1937, maxDocs=44218)
0.03125 = fieldNorm(doc=1196)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Abstract
- This article describes the journey from the conception of and vision for a modern search-engine-based search environment to its technological realisation. In doing so, it takes up the thread of an earlier article on this subject, this time from a technical viewpoint. As well as presenting the conceptual considerations of the initial stages, this article will principally elucidate the technological aspects of this journey. The starting point for the deliberations about development of an academic search engine was the experience we gained through the generally successful project "Digital Library NRW", in which from 1998 to 2000-with Bielefeld University Library in overall charge-we designed a system model for an Internet-based library portal with an improved academic search environment at its core. At the heart of this system was a metasearch with an availability function, to which we added a user interface integrating all relevant source material for study and research. The deficiencies of this approach were felt soon after the system was launched in June 2001. There were problems with the stability and performance of the database retrieval system, with the integration of full-text documents and Internet pages, and with acceptance by users, because users are increasingly performing the searches themselves using search engines rather than going to the library for help in doing searches. Since a long list of problems are also encountered using commercial search engines for academic use (in particular the retrieval of academic information and long-term availability), the idea was born for a search engine configured specifically for academic use. We also hoped that with one single access point founded on improved search engine technology, we could access the heterogeneous academic resources of subject-based bibliographic databases, catalogues, electronic newspapers, document servers and academic web pages.
-
Burblies, C.: vascoda - was lange währt, wird endlich gut!? (2006)
0.00
0.003547887 = product of:
0.017739436 = sum of:
0.017739436 = product of:
0.03547887 = sum of:
0.03547887 = weight(_text_:etc in 6036) [ClassicSimilarity], result of:
0.03547887 = score(doc=6036,freq=2.0), product of:
0.19761753 = queryWeight, product of:
5.4164915 = idf(docFreq=533, maxDocs=44218)
0.036484417 = queryNorm
0.17953302 = fieldWeight in 6036, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.4164915 = idf(docFreq=533, maxDocs=44218)
0.0234375 = fieldNorm(doc=6036)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Content
- Funktionsweise Momentan basiert die vascoda-Suche auf einer Metasuche in verschiedenen Datenbanken (27 einzelne Datenbanken im Herbst 2005). Über eine Web-ServiceArchitektur werden diese Datenbanken abgefragt und liefern die Antworten. Die Verknüpfung zum Volltext wird dort - wo sie bereits realisiert ist - durch die Anbieter, und parallel durch die Elektronische Zeitschriften Bibliothek (EZB) gewährleistet. Diese Struktur soll zukünftig durch eine Verfügbarkeitsrecherche ersetzt werden, die dann eine Übersicht über die unterschiedlichen Zugriffsmöglichkeiten auf den Volltext bietet. Das Konzept der Verfügbarkeitsrecherche und der Einbindung vorhandener lokaler Linkresolver sieht in der vascoda-Ergebnisanzeige für jeden Treffer einen Verfügbarkeitsbutton vor. Über diesen Button wird dann eine Standortauswahl eingeblendet, über die der Nutzer seine Institution auswählen kann. Nach der jeweiligen Zuordnung wird der Nutzer/die Nutzerin direkt zum OpenURL-Resolver seiner Einrichtung weitergeleitet. Nutzerinnen, die keine Auswahl treffen können, bekommen via vascoda-Portal eine standortunabhängige Verfügbarkeitsrecherche auf Basis der nationalen Nachweissysteme (z. B. EZB, ZDB, Verbundkataloge, ...) angeboten. Zukünftig wird vascoda umfassend durch mehr Content erweitert werden. So sollen eine Vielzahl der Angebote der einzelnen Fachportale sowie die Angebote der Bibliotheksverbünde integriert werden. Auf diese Weise wird eine gemeinsame Suche über alle relevanten Bestände möglich. Ferner wird in Zukunft intelligente Suchmaschinentechnologie bei vascoda zum Einsatz kommen, die gegenüber der bisher eingesetzten klassischen Metasuche eine Reihe von Vorteilen aufweist: Es werden Antwortzeiten im Millisekundenbereich erreicht, die Recherche wird durch den Einsatz von linguistischen Verfahren auf der Ebene der Indexierung optimiert, es erfolgt eine automatische Rechtschreibkorrektur bzw. die Einblendung von Rechtschreibvorschlägen, die Ergebnisliste kann durch ein Ranking der Treffer nach einstellbaren Kriterien (nach Relevanz, Erscheinungsjahr, Dokumenttyp, Systematik, Sprache etc.) aufbereitet werden. Das hbz Köln wird in der Erprobungsphase die Software FAST Data Search zum Einsatz bringen. Diese Software ist bislang u.a. schon bei www.scirus.com und bei der hbz-Suchmaschine (http://suchen.hbz-nrw.de) im Einsatz."
-
Kaizik, A.; Gödert, W.; Milanesi, C.: Erfahrungen und Ergebnisse aus der Evaluierung des EU-Projektes EULER im Rahmen des an der FH Köln angesiedelten Projektes EJECT (Evaluation von Subject Gateways des World Wide Web (2001)
0.00
0.0034953242 = product of:
0.01747662 = sum of:
0.01747662 = product of:
0.03495324 = sum of:
0.03495324 = weight(_text_:22 in 5801) [ClassicSimilarity], result of:
0.03495324 = score(doc=5801,freq=4.0), product of:
0.12776221 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036484417 = queryNorm
0.27358043 = fieldWeight in 5801, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=5801)
0.5 = coord(1/2)
0.2 = coord(1/5)
- Date
- 22. 6.2002 19:42:22
