-
Kleineberg, M.: Context analysis and context indexing : formal pragmatics in knowledge organization (2014)
0.46
0.45576933 = product of:
1.025481 = sum of:
0.10254811 = product of:
0.3076443 = sum of:
0.3076443 = weight(_text_:3a in 1826) [ClassicSimilarity], result of:
0.3076443 = score(doc=1826,freq=2.0), product of:
0.32843533 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.038739666 = queryNorm
0.93669677 = fieldWeight in 1826, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.078125 = fieldNorm(doc=1826)
0.33333334 = coord(1/3)
0.3076443 = weight(_text_:2f in 1826) [ClassicSimilarity], result of:
0.3076443 = score(doc=1826,freq=2.0), product of:
0.32843533 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.038739666 = queryNorm
0.93669677 = fieldWeight in 1826, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.078125 = fieldNorm(doc=1826)
0.3076443 = weight(_text_:2f in 1826) [ClassicSimilarity], result of:
0.3076443 = score(doc=1826,freq=2.0), product of:
0.32843533 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.038739666 = queryNorm
0.93669677 = fieldWeight in 1826, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.078125 = fieldNorm(doc=1826)
0.3076443 = weight(_text_:2f in 1826) [ClassicSimilarity], result of:
0.3076443 = score(doc=1826,freq=2.0), product of:
0.32843533 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.038739666 = queryNorm
0.93669677 = fieldWeight in 1826, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.078125 = fieldNorm(doc=1826)
0.44444445 = coord(4/9)
- Source
- http://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=5&ved=0CDQQFjAE&url=http%3A%2F%2Fdigbib.ubka.uni-karlsruhe.de%2Fvolltexte%2Fdocuments%2F3131107&ei=HzFWVYvGMsiNsgGTyoFI&usg=AFQjCNE2FHUeR9oQTQlNC4TPedv4Mo3DaQ&sig2=Rlzpr7a3BLZZkqZCXXN_IA&bvm=bv.93564037,d.bGg&cad=rja
-
Popper, K.R.: Three worlds : the Tanner lecture on human values. Deliverd at the University of Michigan, April 7, 1978 (1978)
0.36
0.3646155 = product of:
0.82038486 = sum of:
0.082038485 = product of:
0.24611545 = sum of:
0.24611545 = weight(_text_:3a in 230) [ClassicSimilarity], result of:
0.24611545 = score(doc=230,freq=2.0), product of:
0.32843533 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.038739666 = queryNorm
0.7493574 = fieldWeight in 230, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.0625 = fieldNorm(doc=230)
0.33333334 = coord(1/3)
0.24611545 = weight(_text_:2f in 230) [ClassicSimilarity], result of:
0.24611545 = score(doc=230,freq=2.0), product of:
0.32843533 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.038739666 = queryNorm
0.7493574 = fieldWeight in 230, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.0625 = fieldNorm(doc=230)
0.24611545 = weight(_text_:2f in 230) [ClassicSimilarity], result of:
0.24611545 = score(doc=230,freq=2.0), product of:
0.32843533 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.038739666 = queryNorm
0.7493574 = fieldWeight in 230, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.0625 = fieldNorm(doc=230)
0.24611545 = weight(_text_:2f in 230) [ClassicSimilarity], result of:
0.24611545 = score(doc=230,freq=2.0), product of:
0.32843533 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.038739666 = queryNorm
0.7493574 = fieldWeight in 230, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.0625 = fieldNorm(doc=230)
0.44444445 = coord(4/9)
- Source
- https%3A%2F%2Ftannerlectures.utah.edu%2F_documents%2Fa-to-z%2Fp%2Fpopper80.pdf&usg=AOvVaw3f4QRTEH-OEBmoYr2J_c7H
-
Shala, E.: ¬Die Autonomie des Menschen und der Maschine : gegenwärtige Definitionen von Autonomie zwischen philosophischem Hintergrund und technologischer Umsetzbarkeit (2014)
0.23
0.22788467 = product of:
0.5127405 = sum of:
0.051274054 = product of:
0.15382215 = sum of:
0.15382215 = weight(_text_:3a in 4388) [ClassicSimilarity], result of:
0.15382215 = score(doc=4388,freq=2.0), product of:
0.32843533 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.038739666 = queryNorm
0.46834838 = fieldWeight in 4388, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.0390625 = fieldNorm(doc=4388)
0.33333334 = coord(1/3)
0.15382215 = weight(_text_:2f in 4388) [ClassicSimilarity], result of:
0.15382215 = score(doc=4388,freq=2.0), product of:
0.32843533 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.038739666 = queryNorm
0.46834838 = fieldWeight in 4388, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.0390625 = fieldNorm(doc=4388)
0.15382215 = weight(_text_:2f in 4388) [ClassicSimilarity], result of:
0.15382215 = score(doc=4388,freq=2.0), product of:
0.32843533 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.038739666 = queryNorm
0.46834838 = fieldWeight in 4388, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.0390625 = fieldNorm(doc=4388)
0.15382215 = weight(_text_:2f in 4388) [ClassicSimilarity], result of:
0.15382215 = score(doc=4388,freq=2.0), product of:
0.32843533 = queryWeight, product of:
8.478011 = idf(docFreq=24, maxDocs=44218)
0.038739666 = queryNorm
0.46834838 = fieldWeight in 4388, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.478011 = idf(docFreq=24, maxDocs=44218)
0.0390625 = fieldNorm(doc=4388)
0.44444445 = coord(4/9)
- Footnote
- Vgl. unter: https://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=2ahUKEwizweHljdbcAhVS16QKHXcFD9QQFjABegQICRAB&url=https%3A%2F%2Fwww.researchgate.net%2Fpublication%2F271200105_Die_Autonomie_des_Menschen_und_der_Maschine_-_gegenwartige_Definitionen_von_Autonomie_zwischen_philosophischem_Hintergrund_und_technologischer_Umsetzbarkeit_Redigierte_Version_der_Magisterarbeit_Karls&usg=AOvVaw06orrdJmFF2xbCCp_hL26q.
-
Proceedings of the 2nd International Workshop on Semantic Digital Archives held in conjunction with the 16th Int. Conference on Theory and Practice of Digital Libraries (TPDL) on September 27, 2012 in Paphos, Cyprus (2012)
0.06
0.061967507 = product of:
0.11154151 = sum of:
0.04038069 = weight(_text_:line in 468) [ClassicSimilarity], result of:
0.04038069 = score(doc=468,freq=2.0), product of:
0.21724595 = queryWeight, product of:
5.6078424 = idf(docFreq=440, maxDocs=44218)
0.038739666 = queryNorm
0.18587546 = fieldWeight in 468, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.6078424 = idf(docFreq=440, maxDocs=44218)
0.0234375 = fieldNorm(doc=468)
0.010469403 = weight(_text_:information in 468) [ClassicSimilarity], result of:
0.010469403 = score(doc=468,freq=14.0), product of:
0.06800663 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.038739666 = queryNorm
0.1539468 = fieldWeight in 468, product of:
3.7416575 = tf(freq=14.0), with freq of:
14.0 = termFreq=14.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0234375 = fieldNorm(doc=468)
0.016615886 = weight(_text_:retrieval in 468) [ClassicSimilarity], result of:
0.016615886 = score(doc=468,freq=4.0), product of:
0.1171842 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.038739666 = queryNorm
0.1417929 = fieldWeight in 468, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.0234375 = fieldNorm(doc=468)
0.024918362 = weight(_text_:techniques in 468) [ClassicSimilarity], result of:
0.024918362 = score(doc=468,freq=2.0), product of:
0.17065717 = queryWeight, product of:
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.038739666 = queryNorm
0.14601415 = fieldWeight in 468, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.0234375 = fieldNorm(doc=468)
0.01915717 = product of:
0.03831434 = sum of:
0.03831434 = weight(_text_:theories in 468) [ClassicSimilarity], result of:
0.03831434 = score(doc=468,freq=2.0), product of:
0.21161452 = queryWeight, product of:
5.4624767 = idf(docFreq=509, maxDocs=44218)
0.038739666 = queryNorm
0.18105723 = fieldWeight in 468, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.4624767 = idf(docFreq=509, maxDocs=44218)
0.0234375 = fieldNorm(doc=468)
0.5 = coord(1/2)
0.5555556 = coord(5/9)
- Abstract
- Archival Information Systems (AIS) are becoming increasingly important. For decades, the amount of content created digitally is growing and its complete life cycle nowadays tends to remain digital. A selection of this content is expected to be of value for the future and can thus be considered being part of our cultural heritage. However, digital content poses many challenges for long-term or indefinite preservation, e.g. digital publications become increasingly complex by the embedding of different kinds of multimedia, data in arbitrary formats and software. As soon as these digital publications become obsolete, but are still deemed to be of value in the future, they have to be transferred smoothly into appropriate AIS where they need to be kept accessible even through changing technologies. The successful previous SDA workshop in 2011 showed: Both, the library and the archiving community have made valuable contributions to the management of huge amounts of knowledge and data. However, both are approaching this topic from different views which shall be brought together to cross-fertilize each other. There are promising combinations of pertinence and provenance models since those are traditionally the prevailing knowledge organization principles of the library and archiving community, respectively. Another scientific discipline providing promising technical solutions for knowledge representation and knowledge management is semantic technologies, which is supported by appropriate W3C recommendations and a large user community. At the forefront of making the semantic web a mature and applicable reality is the linked data initiative, which already has started to be adopted by the library community. It can be expected that using semantic (web) technologies in general and linked data in particular can mature the area of digital archiving as well as technologically tighten the natural bond between digital libraries and digital archives. Semantic representations of contextual knowledge about cultural heritage objects will enhance organization and access of data and knowledge. In order to achieve a comprehensive investigation, the information seeking and document triage behaviors of users (an area also classified under the field of Human Computer Interaction) will also be included in the research.
One of the major challenges of digital archiving is how to deal with changing technologies and changing user communities. On the one hand software, hardware and (multimedia) data formats that become obsolete and are not supported anymore still need to be kept accessible. On the other hand changing user communities necessitate technical means to formalize, detect and measure knowledge evolution. Furthermore, digital archival records are usually not deleted from the AIS and therefore, the amount of digitally archived (multimedia) content can be expected to grow rapidly. Therefore, efficient storage management solutions geared to the fact that cultural heritage is not as frequently accessed like up-to-date content residing in a digital library are required. Software and hardware needs to be tightly connected based on sophisticated knowledge representation and management models in order to face that challenge. In line with the above, contributions to the workshop should focus on, but are not limited to:
Semantic search & semantic information retrieval in digital archives and digital libraries Semantic multimedia archives Ontologies & linked data for digital archives and digital libraries Ontologies & linked data for multimedia archives Implementations and evaluations of semantic digital archives Visualization and exploration of digital content User interfaces for semantic digital libraries User interfaces for intelligent multimedia information retrieval User studies focusing on end-user needs and information seeking behavior of end-users Theoretical and practical archiving frameworks using Semantic (Web) technologies Logical theories for digital archives Semantic (Web) services implementing the OAIS standard Semantic or logical provenance models for digital archives or digital libraries Information integration/semantic ingest (e.g. from digital libraries) Trust for ingest and data security/integrity check for long-term storage of archival records Semantic extensions of emulation/virtualization methodologies tailored for digital archives Semantic long-term storage and hardware organization tailored for AIS Migration strategies based on Semantic (Web) technologies Knowledge evolution We expect new insights and results for sustainable technical solutions for digital archiving using knowledge management techniques based on semantic technologies. The workshop emphasizes interdisciplinarity and aims at an audience consisting of scientists and scholars from the digital library, digital archiving, multimedia technology and semantic web community, the information and library sciences, as well as, from the social sciences and (digital) humanities, in particular people working on the mentioned topics. We encourage end-users, practitioners and policy-makers from cultural heritage institutions to participate as well.
-
Guidi, F.; Sacerdoti Coen, C.: ¬A survey on retrieval of mathematical knowledge (2015)
0.06
0.05904625 = product of:
0.17713875 = sum of:
0.06783407 = weight(_text_:retrieval in 5865) [ClassicSimilarity], result of:
0.06783407 = score(doc=5865,freq=6.0), product of:
0.1171842 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.038739666 = queryNorm
0.5788671 = fieldWeight in 5865, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.078125 = fieldNorm(doc=5865)
0.08306122 = weight(_text_:techniques in 5865) [ClassicSimilarity], result of:
0.08306122 = score(doc=5865,freq=2.0), product of:
0.17065717 = queryWeight, product of:
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.038739666 = queryNorm
0.4867139 = fieldWeight in 5865, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.078125 = fieldNorm(doc=5865)
0.02624345 = product of:
0.0524869 = sum of:
0.0524869 = weight(_text_:22 in 5865) [ClassicSimilarity], result of:
0.0524869 = score(doc=5865,freq=2.0), product of:
0.13565971 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.038739666 = queryNorm
0.38690117 = fieldWeight in 5865, 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=5865)
0.5 = coord(1/2)
0.33333334 = coord(3/9)
- Abstract
- We present a short survey of the literature on indexing and retrieval of mathematical knowledge, with pointers to 72 papers and tentative taxonomies of both retrieval problems and recurring techniques.
- Date
- 22. 2.2017 12:51:57
-
Smith, A.G.: Search features of digital libraries (2000)
0.05
0.049634844 = product of:
0.14890453 = sum of:
0.114213854 = weight(_text_:line in 940) [ClassicSimilarity], result of:
0.114213854 = score(doc=940,freq=4.0), product of:
0.21724595 = queryWeight, product of:
5.6078424 = idf(docFreq=440, maxDocs=44218)
0.038739666 = queryNorm
0.52573526 = fieldWeight in 940, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
5.6078424 = idf(docFreq=440, maxDocs=44218)
0.046875 = fieldNorm(doc=940)
0.011192262 = weight(_text_:information in 940) [ClassicSimilarity], result of:
0.011192262 = score(doc=940,freq=4.0), product of:
0.06800663 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.038739666 = queryNorm
0.16457605 = fieldWeight in 940, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=940)
0.023498412 = weight(_text_:retrieval in 940) [ClassicSimilarity], result of:
0.023498412 = score(doc=940,freq=2.0), product of:
0.1171842 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.038739666 = queryNorm
0.20052543 = fieldWeight in 940, 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=940)
0.33333334 = coord(3/9)
- Abstract
- Traditional on-line search services such as Dialog, DataStar and Lexis provide a wide range of search features (boolean and proximity operators, truncation, etc). This paper discusses the use of these features for effective searching, and argues that these features are required, regardless of advances in search engine technology. The literature on on-line searching is reviewed, identifying features that searchers find desirable for effective searching. A selective survey of current digital libraries available on the Web was undertaken, identifying which search features are present. The survey indicates that current digital libraries do not implement a wide range of search features. For instance: under half of the examples included controlled vocabulary, under half had proximity searching, only one enabled browsing of term indexes, and none of the digital libraries enable searchers to refine an initial search. Suggestions are made for enhancing the search effectiveness of digital libraries; for instance, by providing a full range of search operators, enabling browsing of search terms, enhancement of records with controlled vocabulary, enabling the refining of initial searches, etc.
- Content
- Enthält eine Zusammenstellung der Werkzeuge und Hilfsmittel des Information Retrieval
- Source
- Information Research. 5(2000) no.3, April 2000
-
Van der Veer Martens, B.: Do citation systems represent theories of truth? (2001)
0.05
0.04780719 = product of:
0.21513236 = sum of:
0.013190207 = weight(_text_:information in 3925) [ClassicSimilarity], result of:
0.013190207 = score(doc=3925,freq=2.0), product of:
0.06800663 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.038739666 = queryNorm
0.19395474 = fieldWeight in 3925, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.078125 = fieldNorm(doc=3925)
0.20194215 = sum of:
0.12771446 = weight(_text_:theories in 3925) [ClassicSimilarity], result of:
0.12771446 = score(doc=3925,freq=2.0), product of:
0.21161452 = queryWeight, product of:
5.4624767 = idf(docFreq=509, maxDocs=44218)
0.038739666 = queryNorm
0.6035241 = fieldWeight in 3925, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.4624767 = idf(docFreq=509, maxDocs=44218)
0.078125 = fieldNorm(doc=3925)
0.07422768 = weight(_text_:22 in 3925) [ClassicSimilarity], result of:
0.07422768 = score(doc=3925,freq=4.0), product of:
0.13565971 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.038739666 = queryNorm
0.54716086 = fieldWeight in 3925, 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=3925)
0.22222222 = coord(2/9)
- Date
- 22. 7.2006 15:22:28
- Source
- Information Research. 6(2001), no.2
-
Shafer, K.E.: Evaluating Scorpion results (1998)
0.05
0.045138486 = product of:
0.13541545 = sum of:
0.013190207 = weight(_text_:information in 1569) [ClassicSimilarity], result of:
0.013190207 = score(doc=1569,freq=2.0), product of:
0.06800663 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.038739666 = queryNorm
0.19395474 = fieldWeight in 1569, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.078125 = fieldNorm(doc=1569)
0.03916402 = weight(_text_:retrieval in 1569) [ClassicSimilarity], result of:
0.03916402 = score(doc=1569,freq=2.0), product of:
0.1171842 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.038739666 = queryNorm
0.33420905 = fieldWeight in 1569, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.078125 = fieldNorm(doc=1569)
0.08306122 = weight(_text_:techniques in 1569) [ClassicSimilarity], result of:
0.08306122 = score(doc=1569,freq=2.0), product of:
0.17065717 = queryWeight, product of:
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.038739666 = queryNorm
0.4867139 = fieldWeight in 1569, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.078125 = fieldNorm(doc=1569)
0.33333334 = coord(3/9)
- Abstract
- Scorpion is a research project at OCLC that builds tools for automatic subject assignment by combining library science and information retrieval techniques. A thesis of Scorpion is that the Dewey Decimal Classification (Dewey) can be used to perform automatic subject assignment for electronic items.
-
Multilingual information management : current levels and future abilities. A report Commissioned by the US National Science Foundation and also delivered to the European Commission's Language Engineering Office and the US Defense Advanced Research Projects Agency, April 1999 (1999)
0.04
0.044080213 = product of:
0.13224064 = sum of:
0.015828248 = weight(_text_:information in 6068) [ClassicSimilarity], result of:
0.015828248 = score(doc=6068,freq=18.0), product of:
0.06800663 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.038739666 = queryNorm
0.23274568 = fieldWeight in 6068, product of:
4.2426405 = tf(freq=18.0), with freq of:
18.0 = termFreq=18.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.03125 = fieldNorm(doc=6068)
0.035029367 = weight(_text_:retrieval in 6068) [ClassicSimilarity], result of:
0.035029367 = score(doc=6068,freq=10.0), product of:
0.1171842 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.038739666 = queryNorm
0.29892567 = fieldWeight in 6068, product of:
3.1622777 = tf(freq=10.0), with freq of:
10.0 = termFreq=10.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.03125 = fieldNorm(doc=6068)
0.08138303 = weight(_text_:techniques in 6068) [ClassicSimilarity], result of:
0.08138303 = score(doc=6068,freq=12.0), product of:
0.17065717 = queryWeight, product of:
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.038739666 = queryNorm
0.47688022 = fieldWeight in 6068, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.03125 = fieldNorm(doc=6068)
0.33333334 = coord(3/9)
- Abstract
- Over the past 50 years, a variety of language-related capabilities has been developed in machine translation, information retrieval, speech recognition, text summarization, and so on. These applications rest upon a set of core techniques such as language modeling, information extraction, parsing, generation, and multimedia planning and integration; and they involve methods using statistics, rules, grammars, lexicons, ontologies, training techniques, and so on. It is a puzzling fact that although all of this work deals with language in some form or other, the major applications have each developed a separate research field. For example, there is no reason why speech recognition techniques involving n-grams and hidden Markov models could not have been used in machine translation 15 years earlier than they were, or why some of the lexical and semantic insights from the subarea called Computational Linguistics are still not used in information retrieval.
This picture will rapidly change. The twin challenges of massive information overload via the web and ubiquitous computers present us with an unavoidable task: developing techniques to handle multilingual and multi-modal information robustly and efficiently, with as high quality performance as possible. The most effective way for us to address such a mammoth task, and to ensure that our various techniques and applications fit together, is to start talking across the artificial research boundaries. Extending the current technologies will require integrating the various capabilities into multi-functional and multi-lingual natural language systems. However, at this time there is no clear vision of how these technologies could or should be assembled into a coherent framework. What would be involved in connecting a speech recognition system to an information retrieval engine, and then using machine translation and summarization software to process the retrieved text? How can traditional parsing and generation be enhanced with statistical techniques? What would be the effect of carefully crafted lexicons on traditional information retrieval? At which points should machine translation be interleaved within information retrieval systems to enable multilingual processing?
-
Aizawa, A.; Kohlhase, M.: Mathematical information retrieval (2021)
0.04
0.043812923 = product of:
0.13143876 = sum of:
0.018466292 = weight(_text_:information in 667) [ClassicSimilarity], result of:
0.018466292 = score(doc=667,freq=8.0), product of:
0.06800663 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.038739666 = queryNorm
0.27153665 = fieldWeight in 667, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=667)
0.054829627 = weight(_text_:retrieval in 667) [ClassicSimilarity], result of:
0.054829627 = score(doc=667,freq=8.0), product of:
0.1171842 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.038739666 = queryNorm
0.46789268 = fieldWeight in 667, 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=667)
0.05814285 = weight(_text_:techniques in 667) [ClassicSimilarity], result of:
0.05814285 = score(doc=667,freq=2.0), product of:
0.17065717 = queryWeight, product of:
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.038739666 = queryNorm
0.3406997 = fieldWeight in 667, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.0546875 = fieldNorm(doc=667)
0.33333334 = coord(3/9)
- Abstract
- We present an overview of the NTCIR Math Tasks organized during NTCIR-10, 11, and 12. These tasks are primarily dedicated to techniques for searching mathematical content with formula expressions. In this chapter, we first summarize the task design and introduce test collections generated in the tasks. We also describe the features and main challenges of mathematical information retrieval systems and discuss future perspectives in the field.
- Series
- ¬The Information retrieval series, vol 43
- Source
- Evaluating information retrieval and access tasks. Eds.: Sakai, T., Oard, D., Kando, N. [https://doi.org/10.1007/978-981-15-5554-1_12]
-
¬Third International World Wide Web Conference, Darmstadt 1995 : [Inhaltsverzeichnis] (1995)
0.04
0.04256694 = product of:
0.12770082 = sum of:
0.08076138 = weight(_text_:line in 3458) [ClassicSimilarity], result of:
0.08076138 = score(doc=3458,freq=2.0), product of:
0.21724595 = queryWeight, product of:
5.6078424 = idf(docFreq=440, maxDocs=44218)
0.038739666 = queryNorm
0.37175092 = fieldWeight in 3458, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.6078424 = idf(docFreq=440, maxDocs=44218)
0.046875 = fieldNorm(doc=3458)
0.013707667 = weight(_text_:information in 3458) [ClassicSimilarity], result of:
0.013707667 = score(doc=3458,freq=6.0), product of:
0.06800663 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.038739666 = queryNorm
0.20156369 = fieldWeight in 3458, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=3458)
0.033231772 = weight(_text_:retrieval in 3458) [ClassicSimilarity], result of:
0.033231772 = score(doc=3458,freq=4.0), product of:
0.1171842 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.038739666 = queryNorm
0.2835858 = fieldWeight in 3458, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.046875 = fieldNorm(doc=3458)
0.33333334 = coord(3/9)
- Abstract
- ANDREW, K. u. F. KAPPE: Serving information to the Web with Hyper-G; BARBIERI, K., H.M. DOERR u. D. DWYER: Creating a virtual classroom for interactive education on the Web; CAMPBELL, J.K., S.B. JONES, N.M. STEPHENS u. S. HURLEY: Constructing educational courseware using NCSA Mosaic and the World Wide Web; CATLEDGE, L.L. u. J.E. PITKOW: Characterizing browsing strategies in the World-Wide Web; CLAUSNITZER, A. u. P. VOGEL: A WWW interface to the OMNIS/Myriad literature retrieval engine; FISCHER, R. u. L. PERROCHON: IDLE: Unified W3-access to interactive information servers; FOLEY, J.D.: Visualizing the World-Wide Web with the navigational view builder; FRANKLIN, S.D. u. B. IBRAHIM: Advanced educational uses of the World-Wide Web; FUHR, N., U. PFEIFER u. T. HUYNH: Searching structured documents with the enhanced retrieval functionality of free WAIS-sf and SFgate; FIORITO, M., J. OKSANEN u. D.R. IOIVANE: An educational environment using WWW; KENT, R.E. u. C. NEUSS: Conceptual analysis of resource meta-information; SHELDON, M.A. u. R. WEISS: Discover: a resource discovery system based on content routing; WINOGRAD, T.: Beyond browsing: shared comments, SOAPs, Trails, and On-line communities
-
Kelley, D.: Relevance feedback : getting to know your user (2008)
0.04
0.042303003 = product of:
0.126909 = sum of:
0.01615464 = weight(_text_:information in 1924) [ClassicSimilarity], result of:
0.01615464 = score(doc=1924,freq=12.0), product of:
0.06800663 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.038739666 = queryNorm
0.23754507 = fieldWeight in 1924, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0390625 = fieldNorm(doc=1924)
0.027693143 = weight(_text_:retrieval in 1924) [ClassicSimilarity], result of:
0.027693143 = score(doc=1924,freq=4.0), product of:
0.1171842 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.038739666 = queryNorm
0.23632148 = fieldWeight in 1924, 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=1924)
0.08306122 = weight(_text_:techniques in 1924) [ClassicSimilarity], result of:
0.08306122 = score(doc=1924,freq=8.0), product of:
0.17065717 = queryWeight, product of:
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.038739666 = queryNorm
0.4867139 = fieldWeight in 1924, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.0390625 = fieldNorm(doc=1924)
0.33333334 = coord(3/9)
- Abstract
- Relevance feedback was one of the first interactive information retrieval techniques to help systems learn more about users' interests. Relevance feedback has been used in a variety of IR applications including query expansion, term disambiguation, user profiling, filtering and personalization. Initial relevance feedback techniques were explicit, in that they required the user's active participation. Many of today's relevance feedback techniques are implicit and based on users' information seeking behaviors, such as the pages they choose to visit, the frequency with which they visit pages, and the length of time pages are displayed. Although this type of information is available in great abundance, it is difficult to interpret without understanding more about the user's search goals and context. In this talk, I will address the following questions: what techniques are available to help us learn about users' interests and preferences? What types of evidence are available through a user's interactions with the system and with the information provided by the system? What do we need to know to accurately interpret and use this evidence? I will address the first two questions by presenting an overview of relevance feedback research in information retrieval. I will address the third question by presenting results of some of my own research that examined the online information seeking behaviors of users during a 14-week period and the context in which these behaviors took place.
-
Whitney , C.; Schiff, L.: ¬The Melvyl Recommender Project : developing library recommendation services (2006)
0.04
0.041728474 = product of:
0.12518542 = sum of:
0.08076138 = weight(_text_:line in 1173) [ClassicSimilarity], result of:
0.08076138 = score(doc=1173,freq=2.0), product of:
0.21724595 = queryWeight, product of:
5.6078424 = idf(docFreq=440, maxDocs=44218)
0.038739666 = queryNorm
0.37175092 = fieldWeight in 1173, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.6078424 = idf(docFreq=440, maxDocs=44218)
0.046875 = fieldNorm(doc=1173)
0.011192262 = weight(_text_:information in 1173) [ClassicSimilarity], result of:
0.011192262 = score(doc=1173,freq=4.0), product of:
0.06800663 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.038739666 = queryNorm
0.16457605 = fieldWeight in 1173, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=1173)
0.033231772 = weight(_text_:retrieval in 1173) [ClassicSimilarity], result of:
0.033231772 = score(doc=1173,freq=4.0), product of:
0.1171842 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.038739666 = queryNorm
0.2835858 = fieldWeight in 1173, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.046875 = fieldNorm(doc=1173)
0.33333334 = coord(3/9)
- Abstract
- Popular commercial on-line services such as Google, e-Bay, Amazon, and Netflix have evolved quickly over the last decade to help people find what they want, developing information retrieval strategies such as usefully ranked results, spelling correction, and recommender systems. Online library catalogs (OPACs), in contrast, have changed little and are notoriously difficult for patrons to use (University of California Libraries, 2005). Over the past year (June 2005 to the present), the Melvyl Recommender Project (California Digital Library, 2005) has been exploring methods and feasibility of closing the gap between features that library patrons want and have come to expect from information retrieval systems and what libraries are currently equipped to deliver. The project team conducted exploratory work in five topic areas: relevance ranking, auto-correction, use of a text-based discovery system, user interface strategies, and recommending. This article focuses specifically on the recommending portion of the project and potential extensions to that work.
-
Hildreth, C.R.: Accounting for users' inflated assessments of on-line catalogue search performance and usefulness : an experimental study (2001)
0.04
0.039411336 = product of:
0.17735101 = sum of:
0.16152276 = weight(_text_:line in 4130) [ClassicSimilarity], result of:
0.16152276 = score(doc=4130,freq=2.0), product of:
0.21724595 = queryWeight, product of:
5.6078424 = idf(docFreq=440, maxDocs=44218)
0.038739666 = queryNorm
0.74350184 = fieldWeight in 4130, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.6078424 = idf(docFreq=440, maxDocs=44218)
0.09375 = fieldNorm(doc=4130)
0.01582825 = weight(_text_:information in 4130) [ClassicSimilarity], result of:
0.01582825 = score(doc=4130,freq=2.0), product of:
0.06800663 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.038739666 = queryNorm
0.23274569 = fieldWeight in 4130, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.09375 = fieldNorm(doc=4130)
0.22222222 = coord(2/9)
- Source
- Information Research. 6(2001), no.2
-
Robertson, S.E.; Sparck Jones, K.: Simple, proven approaches to text retrieval (1997)
0.04
0.037282247 = product of:
0.11184674 = sum of:
0.009326885 = weight(_text_:information in 4532) [ClassicSimilarity], result of:
0.009326885 = score(doc=4532,freq=4.0), product of:
0.06800663 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.038739666 = queryNorm
0.13714671 = fieldWeight in 4532, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0390625 = fieldNorm(doc=4532)
0.043786705 = weight(_text_:retrieval in 4532) [ClassicSimilarity], result of:
0.043786705 = score(doc=4532,freq=10.0), product of:
0.1171842 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.038739666 = queryNorm
0.37365708 = fieldWeight in 4532, product of:
3.1622777 = tf(freq=10.0), with freq of:
10.0 = termFreq=10.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.0390625 = fieldNorm(doc=4532)
0.058733147 = weight(_text_:techniques in 4532) [ClassicSimilarity], result of:
0.058733147 = score(doc=4532,freq=4.0), product of:
0.17065717 = queryWeight, product of:
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.038739666 = queryNorm
0.34415868 = fieldWeight in 4532, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.0390625 = fieldNorm(doc=4532)
0.33333334 = coord(3/9)
- Abstract
- This technical note describes straightforward techniques for document indexing and retrieval that have been solidly established through extensive testing and are easy to apply. They are useful for many different types of text material, are viable for very large files, and have the advantage that they do not require special skills or training for searching, but are easy for end users. The document and text retrieval methods described here have a sound theoretical basis, are well established by extensive testing, and the ideas involved are now implemented in some commercial retrieval systems. Testing in the last few years has, in particular, shown that the methods presented here work very well with full texts, not only title and abstracts, and with large files of texts containing three quarters of a million documents. These tests, the TREC Tests (see Harman 1993 - 1997; IP&M 1995), have been rigorous comparative evaluations involving many different approaches to information retrieval. These techniques depend an the use of simple terms for indexing both request and document texts; an term weighting exploiting statistical information about term occurrences; an scoring for request-document matching, using these weights, to obtain a ranked search output; and an relevance feedback to modify request weights or term sets in iterative searching. The normal implementation is via an inverted file organisation using a term list with linked document identifiers, plus counting data, and pointers to the actual texts. The user's request can be a word list, phrases, sentences or extended text.
-
Baeza-Yates, R.; Boldi, P.; Castillo, C.: Generalizing PageRank : damping functions for linkbased ranking algorithms (2006)
0.04
0.0359242 = product of:
0.08082945 = sum of:
0.0065951035 = weight(_text_:information in 2565) [ClassicSimilarity], result of:
0.0065951035 = score(doc=2565,freq=2.0), product of:
0.06800663 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.038739666 = queryNorm
0.09697737 = fieldWeight in 2565, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0390625 = fieldNorm(doc=2565)
0.01958201 = weight(_text_:retrieval in 2565) [ClassicSimilarity], result of:
0.01958201 = score(doc=2565,freq=2.0), product of:
0.1171842 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.038739666 = queryNorm
0.16710453 = fieldWeight in 2565, 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=2565)
0.04153061 = weight(_text_:techniques in 2565) [ClassicSimilarity], result of:
0.04153061 = score(doc=2565,freq=2.0), product of:
0.17065717 = queryWeight, product of:
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.038739666 = queryNorm
0.24335694 = fieldWeight in 2565, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.0390625 = fieldNorm(doc=2565)
0.013121725 = product of:
0.02624345 = sum of:
0.02624345 = weight(_text_:22 in 2565) [ClassicSimilarity], result of:
0.02624345 = score(doc=2565,freq=2.0), product of:
0.13565971 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.038739666 = queryNorm
0.19345059 = fieldWeight in 2565, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=2565)
0.5 = coord(1/2)
0.44444445 = coord(4/9)
- Abstract
- This paper introduces a family of link-based ranking algorithms that propagate page importance through links. In these algorithms there is a damping function that decreases with distance, so a direct link implies more endorsement than a link through a long path. PageRank is the most widely known ranking function of this family. The main objective of this paper is to determine whether this family of ranking techniques has some interest per se, and how different choices for the damping function impact on rank quality and on convergence speed. Even though our results suggest that PageRank can be approximated with other simpler forms of rankings that may be computed more efficiently, our focus is of more speculative nature, in that it aims at separating the kernel of PageRank, that is, link-based importance propagation, from the way propagation decays over paths. We focus on three damping functions, having linear, exponential, and hyperbolic decay on the lengths of the paths. The exponential decay corresponds to PageRank, and the other functions are new. Our presentation includes algorithms, analysis, comparisons and experiments that study their behavior under different parameters in real Web graph data. Among other results, we show how to calculate a linear approximation that induces a page ordering that is almost identical to PageRank's using a fixed small number of iterations; comparisons were performed using Kendall's tau on large domain datasets.
- Date
- 16. 1.2016 10:22:28
- Source
- http://chato.cl/papers/baeza06_general_pagerank_damping_functions_link_ranking.pdf [Proceedings of the ACM Special Interest Group on Information Retrieval (SIGIR) Conference, SIGIR'06, August 6-10, 2006, Seattle, Washington, USA]
-
Zanibbi, R.; Yuan, B.: Keyword and image-based retrieval for mathematical expressions (2011)
0.04
0.03542775 = product of:
0.10628325 = sum of:
0.040700447 = weight(_text_:retrieval in 3449) [ClassicSimilarity], result of:
0.040700447 = score(doc=3449,freq=6.0), product of:
0.1171842 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.038739666 = queryNorm
0.34732026 = fieldWeight in 3449, 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=3449)
0.049836725 = weight(_text_:techniques in 3449) [ClassicSimilarity], result of:
0.049836725 = score(doc=3449,freq=2.0), product of:
0.17065717 = queryWeight, product of:
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.038739666 = queryNorm
0.2920283 = fieldWeight in 3449, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.046875 = fieldNorm(doc=3449)
0.01574607 = product of:
0.03149214 = sum of:
0.03149214 = weight(_text_:22 in 3449) [ClassicSimilarity], result of:
0.03149214 = score(doc=3449,freq=2.0), product of:
0.13565971 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.038739666 = queryNorm
0.23214069 = fieldWeight in 3449, 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=3449)
0.5 = coord(1/2)
0.33333334 = coord(3/9)
- Abstract
- Two new methods for retrieving mathematical expressions using conventional keyword search and expression images are presented. An expression-level TF-IDF (term frequency-inverse document frequency) approach is used for keyword search, where queries and indexed expressions are represented by keywords taken from LATEX strings. TF-IDF is computed at the level of individual expressions rather than documents to increase the precision of matching. The second retrieval technique is a form of Content-Base Image Retrieval (CBIR). Expressions are segmented into connected components, and then components in the query expression and each expression in the collection are matched using contour and density features, aspect ratios, and relative positions. In an experiment using ten randomly sampled queries from a corpus of over 22,000 expressions, precision-at-k (k= 20) for the keyword-based approach was higher (keyword: µ= 84.0,s= 19.0, image-based:µ= 32.0,s= 30.7), but for a few of the queries better results were obtained using a combination of the two techniques.
- Date
- 22. 2.2017 12:53:49
-
Mäkelä, E.; Hyvönen, E.; Saarela, S.; Vilfanen, K.: Application of ontology techniques to view-based semantic serach and browsing (2012)
0.03
0.033909813 = product of:
0.10172944 = sum of:
0.011192262 = weight(_text_:information in 3264) [ClassicSimilarity], result of:
0.011192262 = score(doc=3264,freq=4.0), product of:
0.06800663 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.038739666 = queryNorm
0.16457605 = fieldWeight in 3264, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=3264)
0.040700447 = weight(_text_:retrieval in 3264) [ClassicSimilarity], result of:
0.040700447 = score(doc=3264,freq=6.0), product of:
0.1171842 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.038739666 = queryNorm
0.34732026 = fieldWeight in 3264, 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=3264)
0.049836725 = weight(_text_:techniques in 3264) [ClassicSimilarity], result of:
0.049836725 = score(doc=3264,freq=2.0), product of:
0.17065717 = queryWeight, product of:
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.038739666 = queryNorm
0.2920283 = fieldWeight in 3264, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.046875 = fieldNorm(doc=3264)
0.33333334 = coord(3/9)
- Abstract
- We scho how the beenfits of the view-based search method, developed within the information retrieval community, can be extended with ontology-based search, developed within the Semantic Web community, and with semantic recommendations. As a proof of the concept, we have implemented an ontology-and view-based search engine and recommendations system Ontogaotr for RDF(S) repositories. Ontogator is innovative in two ways. Firstly, the RDFS.based ontologies used for annotating metadata are used in the user interface to facilitate view-based information retrieval. The views provide the user with an overview of the repositorys contents and a vocabulary for expressing search queries. Secondlyy, a semantic browsing function is provided by a recommender system. This system enriches instance level metadata by ontologies and provides the user with links to semantically related relevant resources. The semantic linkage is specified in terms of logical rules. To illustrate and discuss the ideas, a deployed application of Ontogator to a photo repository of the Helsinki University Museum is presented.
- Theme
- Semantisches Umfeld in Indexierung u. Retrieval
-
Hjoerland, B.: Information retrieval and knowledge organization : a perspective from the philosophy of science
0.03
0.032965586 = product of:
0.09889675 = sum of:
0.01582825 = weight(_text_:information in 206) [ClassicSimilarity], result of:
0.01582825 = score(doc=206,freq=8.0), product of:
0.06800663 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.038739666 = queryNorm
0.23274569 = fieldWeight in 206, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=206)
0.033231772 = weight(_text_:retrieval in 206) [ClassicSimilarity], result of:
0.033231772 = score(doc=206,freq=4.0), product of:
0.1171842 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.038739666 = queryNorm
0.2835858 = fieldWeight in 206, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.046875 = fieldNorm(doc=206)
0.049836725 = weight(_text_:techniques in 206) [ClassicSimilarity], result of:
0.049836725 = score(doc=206,freq=2.0), product of:
0.17065717 = queryWeight, product of:
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.038739666 = queryNorm
0.2920283 = fieldWeight in 206, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.405231 = idf(docFreq=1467, maxDocs=44218)
0.046875 = fieldNorm(doc=206)
0.33333334 = coord(3/9)
- Abstract
- Information retrieval (IR) is about making systems for finding documents or information. Knowledge organization (KO) is the field concerned with indexing, classification, and representing documents for IR, browsing, and related processes, whether performed by humans or computers. The field of IR is today dominated by search engines like Google. An important difference between KO and IR as research fields is that KO attempts to reflect knowledge as depicted by contemporary scholarship, in contrast to IR, which is based on, for example, "match" techniques, popularity measures or personalization principles. The classification of documents in KO mostly aims at reflecting the classification of knowledge in the sciences. Books about birds, for example, mostly reflect (or aim at reflecting) how birds are classified in ornithology. KO therefore requires access to the adequate subject knowledge; however, this is often characterized by disagreements. At the deepest layer, such disagreements are based on philosophical issues best characterized as "paradigms". No IR technology and no system of knowledge organization can ever be neutral in relation to paradigmatic conflicts, and therefore such philosophical problems represent the basis for the study of IR and KO.
- Source
- Information 12(2021) 26 S
-
EndNote Plus 2.3 : Enhanced reference database and bibliography maker. With EndLink 2.1, link to on-line and CD-ROM databases (1997)
0.03
0.03284278 = product of:
0.14779252 = sum of:
0.13460231 = weight(_text_:line in 1717) [ClassicSimilarity], result of:
0.13460231 = score(doc=1717,freq=2.0), product of:
0.21724595 = queryWeight, product of:
5.6078424 = idf(docFreq=440, maxDocs=44218)
0.038739666 = queryNorm
0.61958486 = fieldWeight in 1717, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.6078424 = idf(docFreq=440, maxDocs=44218)
0.078125 = fieldNorm(doc=1717)
0.013190207 = weight(_text_:information in 1717) [ClassicSimilarity], result of:
0.013190207 = score(doc=1717,freq=2.0), product of:
0.06800663 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.038739666 = queryNorm
0.19395474 = fieldWeight in 1717, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.078125 = fieldNorm(doc=1717)
0.22222222 = coord(2/9)
- Footnote
- Rez. in: International journal of information management. 17(1997) no.6, S.470-472 (T. Wilson)
