-
Brasethvik, T.: ¬A semantic modeling approach to metadata (1998)
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- Abstract
- States that heterogeneous project groups today may be expected to use the mechanisms of the Web for sharing information. Metadata has been proposed as a mechanism for expressing the semantics of information and, hence, facilitate information retrieval, understanding and use. Presents an approach to sharing information which aims to use a semantic modeling language as the basis for expressing the semantics of information and designing metadata schemes. Functioning on the borderline between human and computer understandability, the modeling language would be able to express the semantics of published Web documents. Reporting on work in progress, presents the overall framework and ideas
- Date
- 9. 9.2000 17:22:23
-
Lund, K.; Burgess, C.; Atchley, R.A.: Semantic and associative priming in high-dimensional semantic space (1995)
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- Abstract
- We present a model of semantic memory that utilizes a high dimensional semantic space constructed from a co-occurrence matrix. This matrix was formed by analyzing a lot) million word corpus. Word vectors were then obtained by extracting rows and columns of this matrix, These vectors were subjected to multidimensional scaling. Words were found to cluster semantically. suggesting that interword distance may be interpretable as a measure of semantic similarity, In attempting to replicate with our simulation the semantic and ...
- Source
- Proceedings of the Seventeenth Annual Conference of the Cognitive Science Society: July 22 - 25, 1995, University of Pittsburgh / ed. by Johanna D. Moore and Jill Fain Lehmann
- Theme
- Semantisches Umfeld in Indexierung u. Retrieval
-
Byrne, C.C.; McCracken, S.A.: ¬An adaptive thesaurus employing semantic distance, relational inheritance and nominal compound interpretation for linguistic support of information retrieval (1999)
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- Date
- 15. 3.2000 10:22:37
-
Gordon, M.D.; Dumais, S.: Using latent semantic indexing for literature based discovery (1998)
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- Abstract
- Latent semantic indexing (LSI) is a statistical technique for improving information retrieval effectiveness. Here, we use LSI to assist in literature-based discoveries. The idea behind literature-based discoveries is that different authors have already published certain underlying scientific ideas that, when taken together, can be connected to hypothesize a new dicovery, and that these connections can be made by exploring the scientific literature. We explore latent semantic indexing's effectiveness on 2 discovery processes: uncovering 'nearby' relationships that are necessary to initiate the literature based discovery process; and discovering more distant relationships that may genuinely generate new discovery hypotheses
- Date
- 11. 2.2016 16:22:19
- Object
- Latent Semantic Indexing
-
Frei, H.P.; Stieger, D.: ¬The use of semantic links in hypertext information retrieval (1995)
0.09
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- Abstract
- It is shown how the semantic content of hypertext links can be used for retrieval purposes. Indexing and retrieval algorithms are presented that exploit the link content in addition to the content of the nodes. The results of some retrieval experiments in a hypertext test collection are presented
-
Richardson, R.; Smeaton, A.F.; Murphy, J.: Using WordNet for conceptual distance measurement (1996)
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- Abstract
- Reports results of research to develop an information retrieval technique employing a conceptual distance measure between words and based on a large thesaurus. The techniques is specifically designed for data sharing in large scale autonomous distributed federated databases (FDBS). The prototype federated dictionary system, FEDDICT, stores information on the location of data sets within the FDBS and on semantic relationships exisitng between these data sets. WordNet is used and tested as the medium for bulding and operating FEDDICT
- Source
- Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon
-
Almerri, J.; McGregor, D.R.: Codon signatures : a document retrieval method (1996)
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- Abstract
- The performance of an information retrieval system depends on its ability to distinguish between relevant and non relevant documents in response to users' information needs. Proposes a new method called Codon Signatures (CS) that is able to use a relationship between terms and concepts. The Codon Signature is designed to improve retrieval performance (recall and precision) by creating the Codon structure, a representation of semantic meaning in context. It is also designed to reduce the amount of storage space required by the index. Presents a theoretical analysis of CS paprameters and performance. The method was tested against 3 document base collections and gave acceptable results regarding information effectiveness and efficiency, compared to a conventional Signature Files method
- Source
- Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon
-
O'Donnell, R.; Smeaton, A.F.: ¬A linguistic approach to information retrieval (1996)
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- Abstract
- An important aspect of information retrieval systems is domain independence, where the subject of the information is not restricted to certain domains of knowledge. This should be able to represent any topic and although the text representation does not involve any semantic knowledge, lexical and syntactic analysis of the text allows the representation to remain domain independent. Reports research at Dublin City University, Ireland, which concentrates on the lexical and syntactic levels of natural language analysis and describes a domain independent automatic information retrieval system which accesses a very large database of newspaper text from the Wall Street Journal. The system represents the text in the form of syntax trees, and these trees are used in the matching process. Reports early results from the stuyd
- Source
- Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon
-
Bordoni, L.; Pazienza, M.T.: Documents automatic indexing in an environmental domain (1997)
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- Abstract
- Describes an application of Natural Language Processing (NLP) techniques, in HIRMA (Hypertextual Information Retrieval Managed by ARIOSTO), to the problem of document indexing by referring to a system which incorporates natural language processing techniques to determine the subject of the text of documents and to associate them with relevant semantic indexes. Describes briefly the overall system, details of its implementation on a corpus of scientific abstracts related to environmental topics and experimental evidence of the system's behaviour. Analyzes in detail an experiment designed to evaluate the system's retrieval ability in terms of recall and precision
- Source
- International forum on information and documentation. 22(1997) no.1, S.17-28
-
Mehrotra, R.: Content-based image modeling and retrieval (1997)
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- Abstract
- Standard databases handle an abstracted world pertinent to specific problems in terms of alphanumeric data and respond to semantics defined by users and known to the databases. This conventional approach is not well suited to image databases, where the desired information and semantics need to be automatically or semi automatically extracted and and appropriately modelled to facilitate content based information retrieval and data manioulation. Discusses the key issues in content based image data modelling and information retrieval with particular reference to the MUlti-SEmantic Unstructured data Model (MUSEUM) system which is capable of dealing with image representatios of 3 dimensional shapes
- Date
- 22. 9.1997 19:16:05
- Source
- Digital image access and retrieval: Proceedings of the 1996 Clinic on Library Applications of Data Processing, 24-26 Mar 1996. Ed.: P.B. Heidorn u. B. Sandore
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Sembok, T.M.T.; Rijsbergen, C.J. van: SILOL: a simple logical-linguistic document retrieval system (1990)
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- Abstract
- Describes a system called SILOL which is based on a logical-linguistic model of document retrieval systems. SILOL uses a shallow semantic translation of natural language texts into a first order predicate representation in performing a document indexing and retrieval process. Some preliminary experiments have been carried out to test the retrieval effectiveness of this system. The results obtained show improvements in the level of retrieval effectiveness, which demonstrate that the approach of using a semantic theory of natural language and logic in document retrieval systems is a valid one
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Arents, H.C.; Bogaerts, W.F.L.: Concept-based retrieval of hypermedia information : from term indexing to semantic hyperindexing (1993)
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-
Rindflesch, T.C.; Aronson, A.R.: Semantic processing in information retrieval (1993)
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- Abstract
- Intuition suggests that one way to enhance the information retrieval process would be the use of phrases to characterize the contents of text. A number of researchers, however, have noted that phrases alone do not improve retrieval effectiveness. In this paper we briefly review the use of phrases in information retrieval and then suggest extensions to this paradigm using semantic information. We claim that semantic processing, which can be viewed as expressing relations between the concepts represented by phrases, will in fact enhance retrieval effectiveness. The availability of the UMLS® domain model, which we exploit extensively, significantly contributes to the feasibility of this processing.
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Petrou, C.; Martakos, D.; Hadjiefthymiades, S.: Adding semantics to hypermedia towards link's enhancements and dynamic linking (1997)
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- Abstract
- Most existing hypermedia authoring systems incorporate facilities for the creation of static links between pieces of information, termed nodes. Such links usually support only browsing activities over the hypermedia web, carrying little or no information about the conceptual relationship the nodes might have. Thus indecision occurs: the reader of the hypermedia can traverse a link but has no indication what link to choose and what he might expect from the traversal. At the same time, the creation of these links requires a great effort from the author, moreover if there are certain criteria that guide linking. This paper presents a two-layered hypermedia semantic model that enriches the semantic links, and alsoprovides the means for dynamic link creation. To accomplish these objectives, we adopt the use of fuzzy set theory and fuzzy logic as the mathematical framework for link characterization and dynamic link creation. Some aspects of a prototype system, named Platon, are also presented
- Source
- Hypertext - Information Retrieval - Multimedia '97: Theorien, Modelle und Implementierungen integrierter elektronischer Informationssysteme. Proceedings HIM '97. Hrsg.: N. Fuhr u.a
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Barker, A.L.: DataStar Web : a comparison with 'classic' DataStar command language searching (1998)
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- Abstract
- Compares and contrasts online searching on DataStar using the 'classic' command language, with access via the more recent Web interface (DataStar Web). The search functionality of the 2 interfaces is not identical, although both use the same retrieval software and access the same databases. Many of the differences affect retrieval effectiveness and may trip up novice and experienced searchers alike
- Source
- Online and CD-ROM review. 22(1998) no.3, S.155-167
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Sillince, J.A.A.: Argumentation-based indexing for information retrieval from learned articles (1992)
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- Abstract
- Current indexing methods used in automatic bibliographic and full text information retrieval assume that knowledge can be adequately represented as a semantic network which is manipulable by means of Boolean operators. However, this semantic approach requires the user to state formally what it is that he wants to find. This paper presents an alternative argumentation-based method. It involves representing a learned article by means of rhetorical structure rather than by a semantic representation of content
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Berger, F.C.; Bommel, P.V.: Augmenting a characterization network with semantic information (1997)
0.07
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- Abstract
- Examines the effect of adding semantic relations to an index for online information retrieval. Discusses various ways in which nodes in an index can be related, and introduces criteria for adding new index entries. Examines the effects of adding relations on the process of offering support during the formulation process
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Li, W.-S.; Shim, J.: Facilitating complex Web queries through visual user interfaces and query relaxation (1998)
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- Abstract
- Describes a novel visual user interface, WebIFQ (Web-In-Frame-Query), to assist users in specifying queries and visualising query criteria including document metadata, strucutres, and linkage information. WebIFQ automatically generates corresponding query statements for WebDB. As a result, users are not required to be aware of underlying complex schema design and language syntax. WebDB supports automated query relaxation to include additional terms related by semantic or co-occurence relationship. WebIFQ can facilitate users to reformulate queries perpetually in an interactive mode
- Date
- 1. 8.1996 22:08:06
- Footnote
- Contribution to a special issue devoted to the Proceedings of the 7th International World Wide Web Conference, held 14-18 April 1998, Brisbane, Australia
-
Nangle, B.; Keane, M.T.: Effective retrieval in hospital information systems : the use of context in answering queries to patient discharge summaries (1994)
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- Abstract
- Adequate information retrieval in electronic storage of medical records in hospital information systems will have to rely on the exploitation of the conceptual knowledge in those records rather than superficial string searches. This course of action is dependent on the development of natural language processing techniques and on retrieval systems that can exploit semantic/conceptual knowledge. Presents a retrieval system CONIR which attempts to realise the second of these developments which operates in the domain of patient discharge summaries on coronary illness. CONIR uses flexible retrieval techniques, that exploit conceptual context information, over a database of elaborated semantic records. Outlines the sorts of knowledge structures that are required to do this type of retrieval and indicate how they are constructed
-
SIGIR'91 : Proceedings of the 14th Anuual International ACM/SIGIR Conference on Research and Development in Information Retrieval, Chicago, IL, 13.-16.19.1991 (1991)
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- Content
- Enthält u.a. die Beiträge: BELKIN, N.J.: In memoriam: B.C. Brookes; CLEVERDON, C.W.: The significance of the Cranfield tests on index languages; TAGUE, J., A. SALMINEN u. C. McCLELLAN: A complete model for information retrieval systems; SALTON, G. u. C. BUCKLEY: Automatic text structuring and retrieval: experiments in automatic encyclopedia searching; CROFT, B., H. TURTLE u. D.D. LEWIS: The use of phrases and structured queries in information retrieval; COOPER, W.S.: Inconsistencies and misnomers in probabilistic IR; LIN, X., D. SOERGEL u. G. MARCHIONINI: A self-organizing semantic map for information retrieval; WENDLANDT, E.G. u. J.R. DRSICOLL: Incorporating a semantic analysis into a document retrieval strategy; SWANSON, D.R.: Analysis of unintended connections between disjoint science literatures
