-
Milanesi, C.: Möglichkeiten der Kooperation im Rahmen von Subject Gateways : das Euler-Projekt im Vergleich mit weiteren europäischen Projekten (2001)
0.01
0.009184138 = product of:
0.03673655 = sum of:
0.03673655 = product of:
0.0734731 = sum of:
0.0734731 = weight(_text_:22 in 4865) [ClassicSimilarity], result of:
0.0734731 = score(doc=4865,freq=2.0), product of:
0.15825124 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045191016 = 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)
0.25 = coord(1/4)
- Date
- 22. 6.2002 19:41:59
-
Xu, J.; Croft, W.B.: Topic-based language models for distributed retrieval (2000)
0.01
0.0085600205 = product of:
0.034240082 = sum of:
0.034240082 = product of:
0.068480164 = sum of:
0.068480164 = weight(_text_:methods in 38) [ClassicSimilarity], result of:
0.068480164 = score(doc=38,freq=4.0), product of:
0.18168657 = queryWeight, product of:
4.0204134 = idf(docFreq=2156, maxDocs=44218)
0.045191016 = queryNorm
0.37691376 = fieldWeight in 38, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
4.0204134 = idf(docFreq=2156, maxDocs=44218)
0.046875 = fieldNorm(doc=38)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Abstract
- Effective retrieval in a distributed environment is an important but difficult problem. Lack of effectiveness appears to have two major causes. First, existing collection selection algorithms do not work well on heterogeneous collections. Second, relevant documents are scattered over many collections and searching a few collections misses many relevant documents. We propose a topic-oriented approach to distributed retrieval. With this approach, we structure the document set of a distributed retrieval environment around a set of topics. Retrieval for a query involves first selecting the right topics for the query and then dispatching the search process to collections that contain such topics. The content of a topic is characterized by a language model. In environments where the labeling of documents by topics is unavailable, document clustering is employed for topic identification. Based on these ideas, three methods are proposed to suit different environments. We show that all three methods improve effectiveness of distributed retrieval
-
Subject retrieval in a networked environment : Proceedings of the IFLA Satellite Meeting held in Dublin, OH, 14-16 August 2001 and sponsored by the IFLA Classification and Indexing Section, the IFLA Information Technology Section and OCLC (2003)
0.01
0.007096612 = product of:
0.028386448 = sum of:
0.028386448 = sum of:
0.016140928 = weight(_text_:methods in 3964) [ClassicSimilarity], result of:
0.016140928 = score(doc=3964,freq=2.0), product of:
0.18168657 = queryWeight, product of:
4.0204134 = idf(docFreq=2156, maxDocs=44218)
0.045191016 = queryNorm
0.08883942 = fieldWeight in 3964, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.0204134 = idf(docFreq=2156, maxDocs=44218)
0.015625 = fieldNorm(doc=3964)
0.012245518 = weight(_text_:22 in 3964) [ClassicSimilarity], result of:
0.012245518 = score(doc=3964,freq=2.0), product of:
0.15825124 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045191016 = queryNorm
0.07738023 = fieldWeight in 3964, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.015625 = fieldNorm(doc=3964)
0.25 = coord(1/4)
- Content
- Enthält die Beiträge: Devadason, F.J., N. Intaraksa u. P. Patamawongjariya u.a.: Faceted indexing application for organizing and accessing internet resources; Nicholson, D., S. Wake: HILT: subject retrieval in a distributed environment; Olson, T.: Integrating LCSH and MeSH in information systems; Kuhr, P.S.: Putting the world back together: mapping multiple vocabularies into a single thesaurus; Freyre, E., M. Naudi: MACS : subject access across languages and networks; McIlwaine, I.C.: The UDC and the World Wide Web; Garrison, W.A.: The Colorado Digitization Project: subject access issues; Vizine-Goetz, D., R. Thompson: Towards DDC-classified displays of Netfirst search results: subject access issues; Godby, C.J., J. Stuler: The Library of Congress Classification as a knowledge base for automatic subject categorization: subject access issues; O'Neill, E.T., E. Childress u. R. Dean u.a.: FAST: faceted application of subject terminology; Bean, C.A., R. Green: Improving subject retrieval with frame representation; Zeng, M.L., Y. Chen: Features of an integrated thesaurus management and search system for the networked environment; Hudon, M.: Subject access to Web resources in education; Qin, J., J. Chen: A multi-layered, multi-dimensional representation of digital educational resources; Riesthuis, G.J.A.: Information languages and multilingual subject access; Geisselmann, F.: Access methods in a database of e-journals; Beghtol, C.: The Iter Bibliography: International standard subject access to medieval and renaissance materials (400-1700); Slavic, A.: General library classification in learning material metadata: the application in IMS/LOM and CDMES metadata schemas; Cordeiro, M.I.: From library authority control to network authoritative metadata sources; Koch, T., H. Neuroth u. M. Day: Renardus: Cross-browsing European subject gateways via a common classification system (DDC); Olson, H.A., D.B. Ward: Mundane standards, everyday technologies, equitable access; Burke, M.A.: Personal Construct Theory as a research tool in Library and Information Science: case study: development of a user-driven classification of photographs
- Footnote
- Rez. in: KO 31(2004) no.2, S.117-118 (D. Campbell): "This excellent volume offers 22 papers delivered at an IFLA Satellite meeting in Dublin Ohio in 2001. The conference gathered together information and computer scientists to discuss an important and difficult question: in what specific ways can the accumulated skills, theories and traditions of librarianship be mobilized to face the challenges of providing subject access to information in present and future networked information environments? The papers which grapple with this question are organized in a surprisingly deft and coherent way. Many conferences and proceedings have unhappy sessions that contain a hodge-podge of papers that didn't quite fit any other categories. As befits a good classificationist, editor I.C. McIlwaine has kept this problem to a minimum. The papers are organized into eight sessions, which split into two broad categories. The first five sessions deal with subject domains, and the last three deal with subject access tools. The five sessions and thirteen papers that discuss access in different domains appear in order of in creasing intension. The first papers deal with access in multilingual environments, followed by papers an access across multiple vocabularies and across sectors, ending up with studies of domain-specific retrieval (primarily education). Some of the papers offer predictably strong work by scholars engaged in ongoing, long-term research. Gerard Riesthuis offers a clear analysis of the complexities of negotiating non-identical thesauri, particularly in cases where hierarchical structure varies across different languages. Hope Olson and Dennis Ward use Olson's familiar and welcome method of using provocative and unconventional theory to generate meliorative approaches to blas in general subject access schemes. Many papers, an the other hand, deal with specific ongoing projects: Renardus, The High Level Thesaurus Project, The Colorado Digitization Project and The Iter Bibliography for medieval and Renaissance material. Most of these papers display a similar structure: an explanation of the theory and purpose of the project, an account of problems encountered in the implementation, and a discussion of the results, both promising and disappointing, thus far. Of these papers, the account of the Multilanguage Access to Subjects Project in Europe (MACS) deserves special mention. In describing how the project is founded an the principle of the equality of languages, with each subject heading language maintained in its own database, and with no single language used as a pivot for the others, Elisabeth Freyre and Max Naudi offer a particularly vivid example of the way the ethics of librarianship translate into pragmatic contexts and concrete procedures. The three sessions and nine papers devoted to subject access tools split into two kinds: papers that discuss the use of theory and research to generate new tools for a networked environment, and those that discuss the transformation of traditional subject access tools in this environment. In the new tool development area, Mary Burke provides a promising example of the bidirectional approach that is so often necessary: in her case study of user-driven classification of photographs, she user personal construct theory to clarify the practice of classification, while at the same time using practice to test the theory. Carol Bean and Rebecca Green offer an intriguing combination of librarianship and computer science, importing frame representation technique from artificial intelligence to standardize syntagmatic relationships to enhance recall and precision.
-
Kunz, M.: Subject retrieval in distributed resources : a short review of recent developments (2003)
0.01
0.0070616566 = product of:
0.028246626 = sum of:
0.028246626 = product of:
0.056493253 = sum of:
0.056493253 = weight(_text_:methods in 1624) [ClassicSimilarity], result of:
0.056493253 = score(doc=1624,freq=2.0), product of:
0.18168657 = queryWeight, product of:
4.0204134 = idf(docFreq=2156, maxDocs=44218)
0.045191016 = queryNorm
0.31093797 = fieldWeight in 1624, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.0204134 = idf(docFreq=2156, maxDocs=44218)
0.0546875 = fieldNorm(doc=1624)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Abstract
- Subject-based retrieval in distributed resources is a current problem in online searches for bibliographic references. Building portals to similar resources is only the ferst step, the subsequent navigation via different search interfaces presents certain difficulties. To make retrieval easier it is necessary to adapt these different resources. Potential approaches (standardisation as opposed to "cross-walks") and methods (automated as opposed to intellectual effort) will be discussed. This includes a Brief appraisal of the future of work with multilingual terminology: - The "classical" approach (Multilingual Thesauri), - The "Internet" approach (linking) Recent developments in mono- and multilingual environments will be presented (MACS, CARMEN, Economics Crosswalk).
-
Dupuis, P.; Lapointe, J.: Developpement d'un outil documentaire à Hydro-Quebec : le Thesaurus HQ (1997)
0.01
0.006122759 = product of:
0.024491036 = sum of:
0.024491036 = product of:
0.048982073 = sum of:
0.048982073 = weight(_text_:22 in 3173) [ClassicSimilarity], result of:
0.048982073 = score(doc=3173,freq=2.0), product of:
0.15825124 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045191016 = queryNorm
0.30952093 = fieldWeight in 3173, 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=3173)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Source
- Argus. 26(1997) no.3, S.16-22
-
Dempsey, L.; Russell, R.; Kirriemur, J.W.: Towards distributed library systems : Z39.50 in a European context (1996)
0.01
0.006122759 = product of:
0.024491036 = sum of:
0.024491036 = product of:
0.048982073 = sum of:
0.048982073 = weight(_text_:22 in 127) [ClassicSimilarity], result of:
0.048982073 = score(doc=127,freq=2.0), product of:
0.15825124 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045191016 = queryNorm
0.30952093 = fieldWeight in 127, 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=127)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Source
- Program. 30(1996) no.1, S.1-22
-
Ashton, J.: ONE: the final OPAC frontier (1998)
0.01
0.006122759 = product of:
0.024491036 = sum of:
0.024491036 = product of:
0.048982073 = sum of:
0.048982073 = weight(_text_:22 in 2588) [ClassicSimilarity], result of:
0.048982073 = score(doc=2588,freq=2.0), product of:
0.15825124 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045191016 = queryNorm
0.30952093 = fieldWeight in 2588, 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=2588)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Source
- Select newsletter. 1998, no.22, Spring, S.5-6
-
Lunau, C.D.: Z39.50: a critical component of the Canadian resource sharing infrastructure : implementation activities and results achieved (1997)
0.01
0.006122759 = product of:
0.024491036 = sum of:
0.024491036 = product of:
0.048982073 = sum of:
0.048982073 = weight(_text_:22 in 3193) [ClassicSimilarity], result of:
0.048982073 = score(doc=3193,freq=2.0), product of:
0.15825124 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045191016 = queryNorm
0.30952093 = fieldWeight in 3193, 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=3193)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Date
- 3. 3.1999 17:22:57
-
Burrows, T.: ¬The virtual catalogue : bibliographic access for the virtual library (1993)
0.01
0.006122759 = product of:
0.024491036 = sum of:
0.024491036 = product of:
0.048982073 = sum of:
0.048982073 = weight(_text_:22 in 5286) [ClassicSimilarity], result of:
0.048982073 = score(doc=5286,freq=2.0), product of:
0.15825124 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045191016 = queryNorm
0.30952093 = fieldWeight in 5286, 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=5286)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Date
- 8.10.2000 14:47:22
-
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)
0.01
0.0054118056 = product of:
0.021647222 = sum of:
0.021647222 = product of:
0.043294445 = sum of:
0.043294445 = weight(_text_:22 in 5801) [ClassicSimilarity], result of:
0.043294445 = score(doc=5801,freq=4.0), product of:
0.15825124 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045191016 = 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)
0.25 = coord(1/4)
- Date
- 22. 6.2002 19:42:22
-
Heery, R.: Information gateways : collaboration and content (2000)
0.01
0.005357414 = product of:
0.021429656 = sum of:
0.021429656 = product of:
0.042859312 = sum of:
0.042859312 = weight(_text_:22 in 4866) [ClassicSimilarity], result of:
0.042859312 = score(doc=4866,freq=2.0), product of:
0.15825124 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045191016 = queryNorm
0.2708308 = fieldWeight in 4866, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=4866)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Date
- 22. 6.2002 19:38:54
-
Severiens, T.; Hohlfeld, M.; Zimmermann, K.; Hilf, E.R.: PhysDoc - a distributed network of physics institutions documents : collecting, indexing, and searching high quality documents by using harvest (2000)
0.01
0.0050440403 = product of:
0.020176161 = sum of:
0.020176161 = product of:
0.040352322 = sum of:
0.040352322 = weight(_text_:methods in 6470) [ClassicSimilarity], result of:
0.040352322 = score(doc=6470,freq=2.0), product of:
0.18168657 = queryWeight, product of:
4.0204134 = idf(docFreq=2156, maxDocs=44218)
0.045191016 = queryNorm
0.22209854 = fieldWeight in 6470, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.0204134 = idf(docFreq=2156, maxDocs=44218)
0.0390625 = fieldNorm(doc=6470)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Abstract
- PhysNet offers online services that enable a physicist to keep in touch with the worldwide physics community and to receive all information he or she may need. In addition to being of great value to physicists, these services are practical examples of the use of modern methods of digital libraries, in particular the use of metadata harvesting. One service is PhysDoc. This consists of a Harvest-based online information broker- and gatherer-network, which harvests information from the local web-servers of professional physics institutions worldwide (mostly in Europe and USA so far). PhysDoc focuses on scientific information posted by the individual scientist at his local server, such as documents, publications, reports, publication lists, and lists of links to documents. All rights are reserved for the authors who are responsible for the content and quality of their documents. PhysDis is an analogous service but specifically for university theses, with their dual requirements of examination work and publication. The strategy is to select high quality sites containing metadata. We report here on the present status of PhysNet, our experience in operating it, and the development of its usage. To continuously involve authors, research groups, and national societies is considered crucial for a future stable service.
-
Fang, L.: ¬A developing search service : heterogeneous resources integration and retrieval system (2004)
0.01
0.0050440403 = product of:
0.020176161 = sum of:
0.020176161 = product of:
0.040352322 = sum of:
0.040352322 = weight(_text_:methods in 1193) [ClassicSimilarity], result of:
0.040352322 = score(doc=1193,freq=2.0), product of:
0.18168657 = queryWeight, product of:
4.0204134 = idf(docFreq=2156, maxDocs=44218)
0.045191016 = queryNorm
0.22209854 = fieldWeight in 1193, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.0204134 = idf(docFreq=2156, maxDocs=44218)
0.0390625 = fieldNorm(doc=1193)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Abstract
- This article describes two approaches for searching heterogeneous resources, which are explained as they are used in two corresponding existing systems-RIRS (Resource Integration Retrieval System) and HRUSP (Heterogeneous Resource Union Search Platform). On analyzing the existing systems, a possible framework-the MUSP (Multimetadata-Based Union Search Platform) is presented. Libraries now face a dilemma. On one hand, libraries subscribe to many types of database retrieval systems that are produced by various providers. The libraries build their data and information systems independently. This results in highly heterogeneous and distributed systems at the technical level (e.g., different operating systems and user interfaces) and at the conceptual level (e.g., the same objects are named using different terms). On the other hand, end users want to access all these heterogeneous data via a union interface, without having to know the structure of each information system or the different retrieval methods used by the systems. Libraries must achieve a harmony between information providers and users. In order to bridge the gap between the service providers and the users, it would seem that all source databases would need to be rebuilt according to a uniform data structure and query language, but this seems impossible. Fortunately, however, libraries and information and technology providers are now making an effort to find a middle course that meets the requirements of both data providers and users. They are doing this through resource integration.
-
Neuroth, H.; Lepschy, P.: ¬Das EU-Projekt Renardus (2001)
0.00
0.004592069 = product of:
0.018368276 = sum of:
0.018368276 = product of:
0.03673655 = sum of:
0.03673655 = weight(_text_:22 in 5589) [ClassicSimilarity], result of:
0.03673655 = score(doc=5589,freq=2.0), product of:
0.15825124 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045191016 = queryNorm
0.23214069 = fieldWeight in 5589, 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=5589)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Date
- 22. 6.2002 19:32:15
-
Avrahami, T.T.; Yau, L.; Si, L.; Callan, J.P.: ¬The FedLemur project : Federated search in the real world (2006)
0.00
0.004592069 = product of:
0.018368276 = sum of:
0.018368276 = product of:
0.03673655 = sum of:
0.03673655 = weight(_text_:22 in 5271) [ClassicSimilarity], result of:
0.03673655 = score(doc=5271,freq=2.0), product of:
0.15825124 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045191016 = queryNorm
0.23214069 = fieldWeight in 5271, 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=5271)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Date
- 22. 7.2006 16:02:07
-
Meiert, M.: Elektronische Publikationen an Hochschulen : Modellierung des elektronischen Publikationsprozesses am Beispiel der Universität Hildesheim (2006)
0.00
0.004592069 = product of:
0.018368276 = sum of:
0.018368276 = product of:
0.03673655 = sum of:
0.03673655 = weight(_text_:22 in 5974) [ClassicSimilarity], result of:
0.03673655 = score(doc=5974,freq=2.0), product of:
0.15825124 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045191016 = queryNorm
0.23214069 = fieldWeight in 5974, 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=5974)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Date
- 1. 9.2006 13:22:15
-
Nicholson, D.; Steele, M.: CATRIONA : a distributed, locally-oriented, Z39.50 OPAC-based approach to cataloguing the Internet (1996)
0.00
0.004592069 = product of:
0.018368276 = sum of:
0.018368276 = product of:
0.03673655 = sum of:
0.03673655 = weight(_text_:22 in 603) [ClassicSimilarity], result of:
0.03673655 = score(doc=603,freq=2.0), product of:
0.15825124 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045191016 = queryNorm
0.23214069 = fieldWeight in 603, 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=603)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Source
- Cataloging and classification quarterly. 22(1996) nos.3/4, S.127-141
-
Johnson, E.H.: Objects for distributed heterogeneous information retrieval (2000)
0.00
0.0038267244 = product of:
0.015306897 = sum of:
0.015306897 = product of:
0.030613795 = sum of:
0.030613795 = weight(_text_:22 in 6959) [ClassicSimilarity], result of:
0.030613795 = score(doc=6959,freq=2.0), product of:
0.15825124 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.045191016 = queryNorm
0.19345059 = fieldWeight in 6959, 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=6959)
0.5 = coord(1/2)
0.25 = coord(1/4)
- Date
- 22. 9.1997 19:16:05
