-
Deisseroth, K.: Lichtschalter im Gehirn (2011)
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- Source
- Spektrum der Wissenschaft. 2011, H.2, S.22-29
-
Ceynowa, K.: Research Library Reloaded? : Überlegungen zur Zukunft der geisteswissenschaftlichen Forschungsbibliothek (2018)
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- Date
- 1. 2.2019 12:50:22
-
Zhu, W.Z.; Allen, R.B.: Document clustering using the LSI subspace signature model (2013)
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- Abstract
- We describe the latent semantic indexing subspace signature model (LSISSM) for semantic content representation of unstructured text. Grounded on singular value decomposition, the model represents terms and documents by the distribution signatures of their statistical contribution across the top-ranking latent concept dimensions. LSISSM matches term signatures with document signatures according to their mapping coherence between latent semantic indexing (LSI) term subspace and LSI document subspace. LSISSM does feature reduction and finds a low-rank approximation of scalable and sparse term-document matrices. Experiments demonstrate that this approach significantly improves the performance of major clustering algorithms such as standard K-means and self-organizing maps compared with the vector space model and the traditional LSI model. The unique contribution ranking mechanism in LSISSM also improves the initialization of standard K-means compared with random seeding procedure, which sometimes causes low efficiency and effectiveness of clustering. A two-stage initialization strategy based on LSISSM significantly reduces the running time of standard K-means procedures.
- Date
- 23. 3.2013 13:22:36
-
Hamm, S.; Schneider, K.: Automatische Erschließung von Universitätsdissertationen (2015)
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- Source
- Dialog mit Bibliotheken. 27(2015) H.1, S.18-22
-
Köttke, K.: Kansste getrost vergessen : Wer sich auf digitale Informationssysteme verlässt, setzt kognitive Fähigkeiten frei (2019)
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- Date
- 13. 2.2019 9:22:14
-
Zanibbi, R.; Yuan, B.: Keyword and image-based retrieval for mathematical expressions (2011)
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- 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
-
Snow, K.; Hoffman, G.L.: What makes an effective cataloging course? : a study of the factors that promote learning (2015)
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- Date
- 10. 9.2000 17:38:22
-
Hjoerland, B.: Theories of knowledge organization - theories of knowledge (2017)
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- Pages
- S.22-36
- Source
- Theorie, Semantik und Organisation von Wissen: Proceedings der 13. Tagung der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation (ISKO) und dem 13. Internationalen Symposium der Informationswissenschaft der Higher Education Association for Information Science (HI) Potsdam (19.-20.03.2013): 'Theory, Information and Organization of Knowledge' / Proceedings der 14. Tagung der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation (ISKO) und Natural Language & Information Systems (NLDB) Passau (16.06.2015): 'Lexical Resources for Knowledge Organization' / Proceedings des Workshops der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation (ISKO) auf der SEMANTICS Leipzig (1.09.2014): 'Knowledge Organization and Semantic Web' / Proceedings des Workshops der Polnischen und Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation (ISKO) Cottbus (29.-30.09.2011): 'Economics of Knowledge Production and Organization'. Hrsg. von W. Babik, H.P. Ohly u. K. Weber
-
Stvilia, B.; Hinnant, C.C.; Schindler, K.; Worrall, A.; Burnett, G.; Burnett, K.; Kazmer, M.M.; Marty, P.F.: Composition of scientific teams and publication productivity at a national science lab (2011)
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- Date
- 22. 1.2011 13:19:42
-
Martin, K.; Shilton, K.: Why experience matters to privacy : how context-based experience moderates consumer privacy expectations for mobile applications (2016)
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- Date
- 20. 7.2016 18:22:57
-
Leissing, U.; Rädler, K.; Hauer, M.: Query-Expansion durch Fachthesauri : Erfahrungsbericht zu dandelon.com, Vorarlberger Parlamentsinformationssystem und vorarlberg.at (2010)
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- Source
- Wissensspeicher in digitalen Räumen: Nachhaltigkeit - Verfügbarkeit - semantische Interoperabilität. Proceedings der 11. Tagung der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation, Konstanz, 20. bis 22. Februar 2008. Hrsg.: J. Sieglerschmidt u. H.P.Ohly
-
Ajiferuke, I.; Lu, K.; Wolfram, D.: ¬A comparison of citer and citation-based measure outcomes for multiple disciplines (2010)
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- Date
- 28. 9.2010 12:54:22
-
Doorn, M. van; Polman, K.: From classification to thesaurus ... and back? : subject indexing tools at the library of the Afrika-Studiecentrum Leiden (2010)
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- Date
- 22. 7.2010 19:48:33
-
Thelwall, M.; Buckley, K.; Paltoglou, G.: Sentiment in Twitter events (2011)
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- Date
- 22. 1.2011 14:27:06
-
Petric, K.; Petric, T.; Krisper, M.; Rajkovic, V.: User profiling on a pilot digital library with the final result of a new adaptive knowledge management solution (2011)
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- Date
- 13. 7.2011 14:47:22
-
¬Die deutsche Zeitschrift für Dokumentation, Informationswissenschaft und Informationspraxis von 1950 bis 2011 : eine vorläufige Bilanz in vier Abschnitten (2012)
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- Date
- 22. 7.2012 19:35:26
- Footnote
- Besteht aus 4 Teilen: Teil 1: Eden, D., A. Arndt, A. Hoffer, T. Raschke u. P. Schön: Die Nachrichten für Dokumentation in den Jahren 1950 bis 1962 (S.159-163). Teil 2: Brose, M., E. durst, D. Nitzsche, D. Veckenstedt u. R. Wein: Statistische Untersuchung der Fachzeitschrift "Nachrichten für Dokumentation" (NfD) 1963-1975 (S.164-170). Teil 3: Bösel, J., G. Ebert, P. Garz,, M. Iwanow u. B. Russ: Methoden und Ergebnisse einer statistischen Auswertung der Fachzeitschrift "Nachrichten für Dokumentation" (NfD) 1976 bis 1988 (S.171-174). Teil 4: Engelage, H., S. Jansen, R. Mertins, K. Redel u. S. Ring: Statistische Untersuchung der Fachzeitschrift "Nachrichten für Dokumentation" (NfD) / "Information. Wissenschaft & Praxis" (IWP) 1989-2011 (S.164-170).
-
Golub, K.; Tudhope, D.; Zeng, M.L.; Zumer, M.: Terminology registries for knowledge organization systems : functionality, use, and attributes (2014)
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- Date
- 22. 8.2014 17:12:54
-
Mathiesen, K.: Human rights as a topic and guide for LIS research and practice (2015)
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- Abstract
- In this global information age, accessing, disseminating, and controlling information is an increasingly important aspect of human life. Often, these interests are expressed in the language of human rights-for example, rights to expression, privacy, and intellectual property. As the discipline concerned with "facilitating the effective communication of desired information between human generator and human user" (Belkin, 1975, p. 22), library and information science (LIS) has a central role in facilitating communication about human rights and ensuring the respect for human rights in information services and systems. This paper surveys the literature at the intersection of LIS and human rights. To begin, an overview of human rights conventions and an introduction to human rights theory is provided. Then the intersections between LIS and human rights are considered. Three central areas of informational human rights-communication, privacy, and intellectual property-are discussed in detail. It is argued that communication rights in particular serve as a central linchpin in the system of human rights.
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McQueen, K.: Ethical issues of knowledge organization in designing a metadata schema for the Leo Kottke Archives (2015)
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- Date
- 27.11.2015 19:22:48
-
Martin, K.E.; Mundle, K.: Positioning libraries for a new bibliographic universe (2014)
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- Date
- 10. 9.2000 17:38:22
