翻訳と辞書 Words near each other ・ Toplița River (Timiș) ・ Toplița River (Vâlsan) ・ Toplița, Hunedoara ・ Toplo ・ Toploader ・ Toplofikatsiya Plovdiv ・ Toplofikatsiya Ruse ・ Toplofikatsiya Sofia ・ Toplou Monastery ・ Topic Maps ・ Topic marker ・ Topic model ・ Topic Records ・ Topic sentence ・ Topic-based authoring ・ Topic-based vector space model ・ Topic-prominent language ・ Topic-Sensitive PageRank ・ Topica ・ Topical anesthetic ・ Topical decongestant ・ Topical irritation agents ・ Topical logic ・ Topical medication ・ Topical Press Agency ・ Topical song ・ Topical stamp collecting ・ Topical steroid ・ Topical tac ・ Topical tobacco paste Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Topic-based vector space model ： ウィキペディア英語版 Topic-based vector space model The Topic-based Vector Space Model (TVSM) (literature: ()) extends the vector space model of information retrieval by removing the constraint that the term-vectors be orthogonal. The assumption of orthogonal terms is incorrect regarding natural languages which causes problems with synonyms and strong related terms. This facilitates the use of stopword lists, stemming and thesaurus in TVSM. In contrast to the generalized vector space model the TVSM does not depend on concurrence-based similarities between terms. ==Definitions== The basic premise of TVSM is the existence of a ''d'' dimensional space ''R'' with only positive axis intercepts, i.e. ''R in R+'' and ''d in N+''. Each dimension of ''R'' represents a fundamental topic. A term vector ''t'' has a specific weight for a certain ''R''. To calculate these weights assumptions are made taking into account the document contents. Ideally important terms will have a high weight and stopwords and irrelevants terms to the topic will have a low weight. The TVSM document model is obtained as a sum of term vectors representing terms in the document. The similarity between two documents ''Di'' and ''Dj'' is defined as the scalar product of document vectors. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Topic-based vector space model」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.