A target document having a plurality of features is summarized by collecting contextual data external to the document. On the basis of this contextual data, the features of the target document are then weighted to indicate the relative importance of that feature. This results in a weighted target document...http://www.google.es/patents/US20020078091?utm_source=gb-gplus-sharePatente US20020078091 - Automatic summarization of a document
