18. A computer-implemented method, using a processor, for generating an opinion summary from a document, said method comprising: using at least one of syntactic analysis, semantic analysis and discourse analysis to assist in automatically extracting a plurality of opinion expressions from the document using the processor, each opinion expression identified by a grammatical element and associated with an opinion source, opinion topic, opinion polarity and opinion strength, wherein for each opinion expression the opinion source is at least one person or entity to which such opinion expression is to be attributed and wherein the document includes opinion expressions from a plurality of opinion sources; organizing the plurality of opinion expressions into data fields, including an opinion source field, using the processor; identifying those opinion expressions that share a common opinion topic using the processor; and combining the opinion polarities and opinion strengths of those opinion expressions that share a common opinion topic to form an overall opinion summary with one aggregate opinion frame for each unique opinion topic.
18. A computer-implemented method, using a processor, for generating an opinion summary from a document, said method comprising: using at least one of syntactic analysis, semantic analysis and discourse analysis to assist in automatically extracting a plurality of opinion expressions from the document using the processor, each opinion expression identified by a grammatical element and associated with an opinion source, opinion topic, opinion polarity and opinion strength, wherein for each opinion expression the opinion source is at least one person or entity to which such opinion expression is to be attributed and wherein the document includes opinion expressions from a plurality of opinion sources; organizing the plurality of opinion expressions into data fields, including an opinion source field, using the processor; identifying those opinion expressions that share a common opinion topic using the processor; and combining the opinion polarities and opinion strengths of those opinion expressions that share a common opinion topic to form an overall opinion summary with one aggregate opinion frame for each unique opinion topic. 19. The computer-implemented method of claim 18 , wherein identifying those opinion expressions that share a common opinion topic includes identifying those opinion expressions that have a common real-world opinion topic expressed in the document with different language.