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Method for performing effective drill-down operations in text corpus visualization and exploration using language model approaches for key phrase weighting
Method for performing effective drill-down operations in text corpus visualization and exploration using language model approaches for key phrase weighting
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机译：在语言语料库可视化和探索中使用语言模型方法对关键短语加权进行有效的向下钻取操作的方法
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摘要
The invention relates to a method and an apparatus for performing a drill-down operation on a text corpus comprising documents, using language models for key phrase weighting, said method comprising the steps of weighting key phrases occurring both in a foreground language model, which contains a selected document cluster of said text corpus, and in a background language model, which does not contain said selected document cluster, by calculating for each key phrase a key phrase weight comprising a ratio between the foreground weight of said key phrase and a background weight of said key phrase, and assigning documents of the foreground language model to cluster labels which are formed by key phrases having high calculated key phrase weights.
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