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    • 9. 发明授权
    • Keyword outputting apparatus and method
    • 关键字输出装置及方法
    • US08065145B2
    • 2011-11-22
    • US12055030
    • 2008-03-25
    • Masayuki OkamotoMasaaki KikuchiKazuyuki Goto
    • Masayuki OkamotoMasaaki KikuchiKazuyuki Goto
    • G10L15/06
    • G06F17/30719
    • A keyword analysis device obtains word vectors represented by the documents by analyzing keywords contained in each of documents input in a designated period. A topic cluster extraction device extracts topic clusters belonging to the same topic from a plurality of documents. A keyword extraction device extracts, as a characteristic keyword group, a predetermined number of keywords from the topic cluster in descending order of appearance frequency. A topic structurization determination device determines whether the topic can be structurized, by segmenting the topic cluster into subtopic clusters with reference to the number of documents, the variance of dates contained in the documents, or the C-value of keyword contained in the documents, as a determination criterion. And a keyword presentation device presents the characteristic keyword group in the subtopic cluster upon arranging the keyword group on the basis of the date information.
    • 关键字分析装置通过分析在指定期间输入的每个文档中包含的关键字来获得由文档表示的字向量。 主题集群提取装置从多个文档中提取属于同一主题的主题集群。 关键词提取装置以出现频率的降序从主题群中提取预定数量的关键词作为特征关键字组。 主题结构化确定装置通过参考文档的数量,文档中包含的日期的差异或包含在文档中的关键字的C值来确定主题集合是否可以被结构化,将主题集合分成子主题集合, 作为决定标准。 并且,关键字呈现装置在基于日期信息安排关键字组时,在子主题集中呈现特征关键字组。