Group-based document retrieval

A computer system for retrieving a document from a plurality of documents divided into a plurality of document groups in which mutually related documents are each included, the system comprising:

• a memory;
• and
• a processor, communicatively coupled to said memory, the computer system configured to perform a method comprising:
• acquiring a retrieval condition that includes a plurality of conditions and at least one logical operator that connects the plurality of conditions;
• identifying, with respect to each condition of the plurality of conditions, a document group including a document satisfying the condition from among the plurality of document groups;
• identifying a document that satisfies at least one condition among the plurality of conditions from among the plurality of documents;
• determining a document that is a retrieval result based on the retrieval condition by making a selection to omit or retain that depends on the at least one logical operator with respect to the document included in the document group that is identified with respect to each condition of the plurality of conditions and the identified document satisfying the at least one condition among the plurality of conditions;
• and
• generating information showing the document that is the retrieval result based on the retrieval condition.

A computer program product for searching retrieving a document from a plurality of documents divided into a plurality of document groups in which mutually related documents are each included, the computer program product comprising a computer readable medium having computer-readable program code embodied therewith, which when executed by a computer processor, causes the computer processor to implement:

• acquiring a retrieval condition that includes a plurality of conditions and at least one logical operator that connects the plurality of conditions;
• identifying, with respect to each condition of the plurality of conditions, a document group including a document satisfying the condition from among the plurality of document groups;
• identifying a document that satisfies at least one condition among the plurality of conditions from among the plurality of documents;
• determining a document that is a retrieval result based on the retrieval condition by making a selection to omit or retain that depends on the at least one logical operator with respect to the document included in the document group that is identified with respect to each condition of the plurality of conditions and the identified document satisfying the at least one condition among the plurality of conditions;
• and
• generating information showing the document that is the retrieval result based on the retrieval condition.