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Success factors in ontology based query expansion

Ontology-based query expansion in the biomedicine domain

Ontology-based query expansion in the biomedicine domain

... The lexicon table from the UMLS SPECIALIST lexicon contains a number of variants of biomedical terms including five types, nominalization, normalization, spelling variant, acronym and abbreviation. It will be used to ...

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Ontology Based Query Expansion with a Probabilistic Retrieval Model

Ontology Based Query Expansion with a Probabilistic Retrieval Model

... independent ontology is used for our experiments and ontology based query expansion is applied to the news ...An ontology is a collective body of knowledge which is usually ...

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Ontology Based Query Expansion with a Probabilistic Retrieval Model

Ontology Based Query Expansion with a Probabilistic Retrieval Model

... independent ontology is used for our experiments and ontology based query expansion is applied to the news ...An ontology is a collective body of knowledge which is usually ...

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Ontology-Based Query Expansion Widget for Information Retrieval

Ontology-Based Query Expansion Widget for Information Retrieval

... the Query Expansion Widget We have created a demonstration search interface 9 consisting of the original ...text query terms with the item index terms. The ontologies used in the query ...

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Ontology Based Query Expansion with a Probabilistic Retrieval Model

Ontology Based Query Expansion with a Probabilistic Retrieval Model

... independent ontology is used for our experiments and ontology based query expansion is applied to the news ...An ontology is a collective body of knowledge which is usually ...

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An approach to semantic query expansion system based on Hepatitis ontology

An approach to semantic query expansion system based on Hepatitis ontology

... comprises more than 23 million citations for biomedi- cal literature from MEDLINE, life science journals, and online books. Springer Link provides researchers with access to millions of scientific documents from ...

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Investigating ontology based query expansion using a probabilistic retrieval model

Investigating ontology based query expansion using a probabilistic retrieval model

... the ontology can be used for word sense disambiguation and subsequent query ...an ontology. An ontology is a collective body of knowledge which is usually created and shared by users who are ...

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Query exhaustivity, relevance feedback and search success in automatic and interactive query expansion

Query exhaustivity, relevance feedback and search success in automatic and interactive query expansion

... The effectiveness of QE seems also to depend on users’ ability to identify search facets and on the complexity of the search topic. In a study by Brajnik & al. (1996) 45 users searched for two topics in an experimental ...

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Query expansion research based on semantic context

Query expansion research based on semantic context

... retrieval; query expansion; WordNet; semantic context; ontology _____________________________________________________________________________________________ INTRODUCTION In information retrieval, ...

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Ontology Based Natural Language Query Processing for the Biological Domain

Ontology Based Natural Language Query Processing for the Biological Domain

... With the increasing availability of textual informa- tion related to biology, including MEDLINE ab- stracts and full-text journal articles, the field of biomedical text mining is rapidly growing. The application of ...

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Concept-based Interactive Query Expansion Support Tool (CIQUEST)

Concept-based Interactive Query Expansion Support Tool (CIQUEST)

... the success was due to the large amount of free-text being searched: firstly, because there was a better chance of locating text patterns indicative of descriptive phrases; and second, more text results in better ...

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A Distributed Representation Based Query Expansion Approach for Image Captioning

A Distributed Representation Based Query Expansion Approach for Image Captioning

... The success of these data-driven approaches de- pends directly on the amount of data available and the quality of the retrieval set. Clearly, the im- age features and the corresponding similarity mea- sures used ...

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Ontology Based Fuzzy Query Execution

Ontology Based Fuzzy Query Execution

... Keywords: Fuzzy, Ontology, Fuzzy Data, Metadata, DBMS Catalog, Fuzzy Knowledge Representation, Ontology, Databases, Database Modeling 1. Introduction Relational Database Management System (RDBMS) is used to ...

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Query expansion

Query expansion

... In order to establish whether or not the term lists from the eight al- gorithms reflected the preferences of the users with regard to expansion terms, Efthimiadis experimented with, among other things, rank sums. ...

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Summarization based Query Expansion in Information Retrieval

Summarization based Query Expansion in Information Retrieval

... Summarization based Query Expansion in Information Retrieval S u m m a r i z a t i o n b a s e d Query E x p a n s i o n in I n f o r m a t i o n Retrieval Tomel~ Strzalkowsl~i, Jin Wang, and Bowden W[.] ...

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Summarization based Query Expansion in Information Retrieval

Summarization based Query Expansion in Information Retrieval

... Second, the detailed statement of information need is auto- matically processed by a series of natural language processing routines in order to derive an optimal search q[r] ...

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Query Expansion based on Associated Semantic Space

Query Expansion based on Associated Semantic Space

... of query keywords based on semantic relations is an effective approach to improve the performance of information ...of query expansion did not adequately make use of semantic relations between ...

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An Introduction to Ontology-Based Query Answering with Existential Rules

An Introduction to Ontology-Based Query Answering with Existential Rules

... 5 Decidable Classes of Rules and Algorithmic Techniques In this section, we present several criteria that ensures decidability of BCQ entailment. First, we consider the case where the saturation introduced in Section 4 ...

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Ontology-Based Query in Heterogeneous & Distributed Data Sources

Ontology-Based Query in Heterogeneous & Distributed Data Sources

... system based on ontology to semantically integrate heterogeneous data sources such as XML and RDF to solve some conflicts that occur in these ...framework based on ontology to retrieve data ...

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The price of query rewriting in ontology-based data access

The price of query rewriting in ontology-based data access

... into query rewritings, we can use additional existentially quantified variables—provided that the domain of quantification contains at least two elements ...

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