Query Expansion using Thesauri:
نویسنده
چکیده
منابع مشابه
Similarity Thesauri and Cross-Language Retrieval
This paper describes a method for constructing a thesaurus automatically from a corpus of suitable documents, using standard information retrieval methods. The resulting thesauri can be used for user-initiated query expansion, automatic query expansion, as well as cross-language retrieval. Researchers at the Swiss Federal Institute of Technology in Zürich developed and evaluated this method in ...
متن کاملCreation and Maintenance of Query Expansion Rules
In an information retrieval system, a thesaurus can be used for query expansion, i.e. adding words to queries in order to improve recall. We propose a semi-automatic and interactive approach for the creation and maintenance of domain-specific thesauri for query expansion. Domain-specific thesauri are especially required in highly technical domains where the use of general thesauri for query exp...
متن کاملThesaurus-assisted search term selection and query expansion: A review of user-centred studies
This paper provides a review of the literature related to the application of domain-specific thesauri in the search and retrieval process. Focusing on studies which adopt a usercentred approach, the review presents a survey of the methodologies and results from empirical studies undertaken on the use of thesauri as sources of term selection for query formulation and expansion during the search ...
متن کاملDo Thesauri enhance rule-based categorization for OCR text?
A rule-based automatic text categorizer was tested to see if two types of thesaurus expansion, called query expansion and Junker expansion respectively, would improve categorization. Thesauri used were domainspecific to an OCR test collection focussed on a single topic. Results show that neither type of expansion significantly improved categorization.
متن کاملComplementing WordNet with Roget's and Corpus-based Thesauri for Information Retrieval
This paper proposes a method to overcome the drawbacks of WordNet when applied to information retrieval by complementing it with Roget 's thesaurus and corpus-derived thesauri. Words and relations which are not included in WordNet can be found in the corpus-derived thesauri. Effects of polysemy can be minimized with weighting method considering all query terms and all of the thesauri. Experimen...
متن کامل