Information extraction method, extractor rebuilding method, and system and computer program product thereof

An information extraction system, for extracting dynamic information, the information extraction system comprising:

• a processor;
• a memory;
• an information extractor building unit, for building a plurality of information extractors for connecting with a plurality of information sources and determining a weight value of each of the information extractors, wherein each of the information source provides the dynamic information;
• a storage unit, for storing 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 a first reliable value corresponding to the dynamic information;
• an information extraction and integration unit, for 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, and determining a second reliable value corresponding to the dynamic information at the second time point according to the weight values of the information extractors and the second reference values;
• and
• an information extractor verification unit, for 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, wherein when the information extractors is verified as abnormal, the verified abnormal information extractor is removed,
• an information extractor rebuilding unit, for building at least one substitutive information extractor for each information source having no information extractor connected thereto, after the information extractor verification unit removes the verified abnormal information extractor.

An information extractor rebuilding method, for an information extraction system, wherein the information extraction system is for extracting dynamic information from a plurality of information sources connected with a plurality of information extractors, and each of the information extractors has a weight value, the information rebuilding method comprising:

• 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, using a processor unit;
• 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;
• building at least one substitutive information extractor for each information source having no information extractor connected thereto according to the second reliable value;
• using each of the information extractors and the at least one substitutive information extractor to extract a third reference value of the dynamic information from each of the corresponding information sources at a third time point;
• determining a third reliable value corresponding to the dynamic information at the third time point according to the weight values and the third reference values;
• and
• verifying whether each of the information extractors and the at least one substitutive extractor is abnormal according to the second reference values and the third reference values, and the second reliable value and the third second reliable value, respectively, wherein when the information extractors and the at least one substitutive information extractor is verified as abnormal, the verified abnormal information extractor or substitutive information extractor is removed,
• building at least one substitutive information extractor for each information source having no information extractor connected thereto, after removing the verified abnormal information extractor.

An information extractor rebuilding system, for an information extraction system, wherein the information extraction system is for extracting dynamic information from a plurality of information sources connected with a plurality of information extractors, and each of the information extractors has a weight value, the information extractor rebuilding system comprises:

• a processor;
• a memory;
• an information extraction and integration unit, for 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, and 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;
• an information extractor rebuilding unit, for building at least one substitutive information extractor for each information source having no information extractor connected thereto according to the second reliable value, wherein the information extraction and integration unit is further for using each of the information extractors and the at least one substitutive information extractor to extract a third reference value of the dynamic information from each of the corresponding information sources at a third time point, and determining a third reliable value corresponding to the dynamic information at the third time point according to the weight values and the third reference values;
• and
• an information extractor verification unit, for verifying whether each of the information extractors and the at least one substitutive information extractor is abnormal according to the second reference values and the third reference values, and the second reliable value and the third reliable value, respectively, wherein when the information extractors and the at least one substitutive information extractor is verified as abnormal, the verified abnormal information extractor or substitutive information extractor is removed,
• an information extractor rebuilding unit, for building at least one substitutive information extractor for each information source having no information extractor connected thereto, after the information extractor verification unit removes the verified abnormal information extractor.