翻訳と辞書 Words near each other ・ Terlizzi ・ Terlizzi railway station ・ Terloy ・ Terlton, Oklahoma ・ Term ・ Term (architecture) ・ Term (argumentation) ・ Term (logic) ・ Term (time) ・ Term algebra ・ Term and Quarter Days (Scotland) Act 1990 ・ Term Asset-Backed Securities Loan Facility ・ Term auction facility ・ Term Brady - EP ・ Term Catalogue ・ Term Discrimination ・ Term indexing ・ Term Life ・ Term life insurance ・ Term limit ・ Term Limits (novel) ・ Term limits in Oregon ・ Term limits in the United States ・ Term limits in Wyoming ・ Term loan ・ Term logic ・ Term of address ・ Term of endearment ・ Term of office ・ Term of patent 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 Term Discrimination ： ウィキペディア英語版 Term Discrimination Term Discrimination is a way to rank keywords in how useful they are for information retrieval. == Overview == This is a method similar to tf-idf but it deals with finding keywords suitable for information retrieval and ones that are not. Please refer to Vector Space Model first. This method uses the concept of ''Vector Space Density'' that the less dense an occurrence matrix is, the better an information retrieval query will be. An optimal index term is one that can distinguish two different documents from each other and relate two similar documents. On the other hand, a sub-optimal index term can not distinguish two different document from two similar documents. The discrimination value is the difference in the occurrence matrix's vector-space density versus the same matrix's vector-space without the index term's density. Let: $A$ be the occurrence matrix $A\_k$ be the occurrence matrix without the index term $k$ and $Q(A)$ be density of $A$. Then: The discrimination value of the index term $k$ is: $DV\_k\; =\; Q(A)\; -\; Q(A\_k)$ 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「Term Discrimination」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.