Search (6 results, page 1 of 1)

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Abstract

Reports on an exploratory study of the semantic interpretation of conjuncts and their translation into Boolean search statements, using dictionary definitions. Rules were formulated based on syntactic and semantic analysis of the conjunctive phrases occuring in 160 natural language statements (NLS) of users information needs. This includes a set of transformational rules to accomodate variations in natural language expressions. Evaluation of the rules to accomodate variations in natural language expressions. Evaluation of the rules was performed by matching the output of the algorithm with the search formulation done by an expert online searcher. It resulted in an 81% match rate

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Abstract

Facet analysis of subjects is found helpful for information storage and retrieval in libraries and information systems. However, such an analysis introduces chances for alternative interpretations of combinations of facets in a subject proposition. This variance in interpretation may be measured in relation to concreteness of the categories. The postulate of PMEST is empirically verified from this point of view. Further, a correlation between concreteness of category and its predictibility is established on the basis of information theory. It is found that PMEST structure of subject-proposition reflects the direct correlation of concreteness and predictibility

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Abstract

Based on a paper presentend to the Documentation Research and Training Centre 'Seminar on classification and indexing in social sciences', Bangalore. An analysis of a detailed survey on facet-analysed subject strings in the field of social sciences. Subject strings of 4 typers were administered as a stratified sample of responses to identify the gaps in semantic connotation of terms. This survey has helped to idetify the possible aberrations in the semantic connotations due to the presence or absence of terms. It was found that use of prepositions, conjunctions and other role indicating terms gives semantic clarity. The syntax of speciator terms may have to be varied according to the respondent groups. It was found that if the number of component terms in a subject string increases beyond a certain limit it gives rise to problems in interpretation of ideas. This indicates a break-even point for formulating subject headings

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Abstract

1. Introduction In this age of world wide communication, and the resulting thrust towards universality, the domain specific specialized vocabularies used in the visual resources and bibliographic databases pose limitations of access. Although they provide adequate access to the experts in the field, a layperson with little or no knowledge in the field (lay user) is constrained by the terminology. The meaning of the index terms used in the databases or the choice of search terms is not easy for such a user. It presupposes the ability of the users to demarcate and discriminate a concept/entity from other entities, and a lay user is often unclear about the connotations of the terms, and the subtle differences in their usage within the domain. The challenge to any indexer of visual resources is the subjective nature of the interpretation of the image itself. Images very seldom contain any textual information besides title, creator or date. However, images also need to be accessed for content and context as well, and context and content description are very often left to "the eye of the beholder." Utilizing standardized terminology can help classify and define an image more accurately, thereby improving accessibility. However, the special needs of a lay user still remain to be addressed. The use of as an auxiliary resource may help alleviate this problem to some extent. This paper presents the findings of an exploratory study to assess the value of WordNet as a pre-search tool to aid in the understanding and the identification of concepts, including the terminology needed to search visual resources databases in the field of architecture. It also reveals the nature of the problems encountered by lay users and how specific aspects of WordNet were helpful. WordNet is an electronic lexical database based an psycho-linguistic theories of human lexical memory, developed and maintained at Princeton University since 1985. Sets of synonymous terms (or synsets) constitute its basic organization. English nouns, verbs, an adjectives are organized into synsets, each representing one underlying lexical concept. Several types of relationships between the synsets are recorded in Wordnet.

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Source

Knowledge organization in the 21st century: between historical patterns and future prospects. Proceedings of the Thirteenth International ISKO Conference 19-22 May 2014, Kraków, Poland. Ed.: Wieslaw Babik

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Source

Knowledge organization. 22(1995) nos.3/4, S.141-147