US6721728B2 - System, method and apparatus for discovering phrases in a database - Google
Patents US6721728B2 - System, method and apparatus for discovering phrases in a database …

One of the main themes supporting text mining is text representation, ie, looking for the
appropriate terms to transfer the documents into numerical vectors. Recently, many efforts …

Pseudo-relevance feedback is an effective technique for improving retrieval results.
Traditional feedback algorithms use a whole feedback document as a unit to extract words …

Although many variants of language models have been proposed for information retrieval,
there are two related retrieval heuristics remaining" external" to the language modeling …

In most existing retrieval models, documents are scored primarily based on various kinds of
term statistics such as within-document frequencies, inverse document frequencies, and …

We investigate the application of a novel relevance ranking technique, cover density
ranking, to the requirements of Web-based information retrieval, where a typical query …

NECI Research Institute has developed a metasearch engine that improves the efficiency of
Web searches by downloading and analyzing each document and then displaying results …

Subsets of the database that are relevant to an input query. First, a number of relational
models of Subsets of a database are provided. A query is then input. The query can include …

Text retrieval systems store a great variety of documents, from abstracts, newspaper articles,
and Web pages to journal articles, books, court transcripts, and legislation. Collections of …

Proximity among query terms has been found to be useful for improving retrieval
performance. However, its application to classical probabilistic information retrieval models …