Patent ID: 7925618

Claim:
An information extraction method, for extracting dynamic information, the information extraction method comprising: building a plurality of information extractors for connecting with a plurality of information sources, wherein each of the information sources provides the dynamic information, using a processor unit; determining a weight value for each of the information extractors; recording a first reference value of the dynamic information extracted by each of the information extractors from each of the corresponding information sources at a first time point, and determining a first reliable value corresponding to the dynamic information according to the first reference values; using each of the information extractors to extract a second reference value of the dynamic information from each of the corresponding information sources at a second time point; determining a second reliable value corresponding to the dynamic information at the second time point according to the weight values and the second reference values; and verifying whether each of the information extractors is abnormal according to the first reference values and the second reference values, and the first reliable value and the second reliable value, respectively, wherein when the information extractors is verified as abnormal, the verified abnormal information extractor is removed; and building at least one substitutive information extractor for each information source having no information extractor connected thereto, after removing the verified abnormal information extractor.