Document investigation system, document investigation method, and document investigation program for providing prior information

A document investigation method for acquiring digital information recorded in a plurality of computers or servers, analyzing document information composed of a plurality of documents included in the obtained digital information, and providing prior information to investigate relevance with a lawsuit or fraud investigation in order to make it easier to use the document information for the lawsuit or the fraud investigation,

• wherein the computers:
• collect and analyze case-investigation-result-related information including a classification work result of each case with respect to a lawsuit or fraud investigation case, prepare or update an investigation model parameter to investigate the lawsuit or fraud investigation case, and register the investigation model parameter;
• and
• after accepting input information for specifying investigation content of a new investigation case, search for the registered investigation model parameter, extracts an investigation model parameter in relation to the input information, output an investigation model by using the extracted investigation model parameter, and configure and provide the prior information to investigate the new investigation case based on an investigation model output result.

A document investigation program for acquiring digital information recorded in a plurality of computers or servers, analyzing document information composed of a plurality of documents included in the obtained digital information, and providing prior information to investigate relevance with a lawsuit or fraud investigation in order to make it easier to use the document information for the lawsuit or the fraud investigation,

• wherein the document investigation program has the computers implement:
• a function that collects and analyzes case-investigation-result-related information including a classification work result of each case with respect to a lawsuit or fraud investigation case, prepares or updates an investigation model parameter to investigate the lawsuit or fraud investigation case, and registers the investigation model parameter;
• and a function that, after accepting input information for specifying investigation content of a new investigation case, searches for the registered investigation model parameter, extracts an investigation model parameter in relation to the input information, outputs an investigation model by using the extracted investigation model parameter, and
• configures and provides the prior information to investigate the new investigation case based on an investigation model output result.