query expansion


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query expansion

(information science)
Adding search terms to a user's search. Query expansion is the process of a search engine adding search terms to a user's weighted search. The intent is to improve precision and/or recall. The additional terms may be taken from a thesaurus. For example a search for "car" may be expanded to: car cars auto autos automobile automobiles.

The additional terms may also be taken from documents that the user has specified as being relevant; this is the basis for the "more like this" feature of some search engines.

The extra terms can have positive or negative weights.
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geometric consistency checking [16][30], query expansion [8][7][1] also further significantly improve the performance of the searching system.
used a variation of the Hidden Markov Model (HMM) to align the text in the slides to the most likely section in the paper, compared and evaluated four different alliance methods that were collective by methods such as TF-IDF term weighting and query expansion.
A thesaurus structure used in query expansion ("SOW" being mapped as equivalent to the term "proposal" would allow someone searching on either term to return documents tagged with or containing the other) deals with situations where multiple terms can mean the same thing.
SSDCN approach is compared with keyword based search, WordNet-based lexical query expansion and ontology-based semantic query expansion.
In query expansion, related words are added to user's original query and form a longer and more precise query to express users' retrieval intentions.
This is decidedly less sexy than article recommenders, rich snippets of information to provide content to searchers, automatic query expansion, or any of the other "beyond the single search box" features I'll be discussing here.
The specific topics include query expansion based on Mongolian semantics, subspace culling for continuous collision detection, designing and implementing a static test approach for embedded software, an area-based image matching algorithm and its implementation, and the real-time estimation of the road friction coefficient for an electric vehicle.
Often described as query expansion and pseudo relevance feedback related research can be traced down to the standard information retrieval area, e.
Query expansion works well as a solution to orthographic variation.
This platform builds on the product's legacy, offering full integration of ResearcherID with Web of Science, deeper citation resources with fully integrated BIOSIS Citation Index and Chinese Science Citation Database, faster search capabilities with an automated query expansion, and an improved Analyze Tool to help a user decipher the sense of a search, whether it generates a hundred or a thousand results.
Business information query expansion through semantic network.
The approach is known as query expansion and can be done by expanding the query both before and after translation.