Utilizing a pre-defined concept net for a specific domain, the research system guides a search from a more general concept to a search with a more specific concept until the desire information in retrieved. At each search stage the top documents with highest precision and recall are returned to the user. We have implemented a single-document summarizer in the economic news domain for both English and Chinese. The summarization system is bundled with the concept-based search engine. We have also built a multiple document summarizer for English that automatically generates one summary from a group of documents that describe a common topic.
Demos are available.
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