Method and system for information retrieval based on parts of speech conditions

An information retrieval navigation method using a processing unit, comprising the steps of:

• extracting a retrieval navigation item among a plurality retrieval navigation items which meet a retrieval navigation item generation condition in information on a multiplicity of cases to be searched, the retrieval navigation item generation condition including definitions of parts of speech including either a noun or a verb, hierarchical rank of the parts of speech, appearance order of the retrieved navigation items registered and retrieved navigation items of high rank;
• and
• selecting at least one retrieval navigation item from the retrieval navigation items thus generated;
• generating a message including said retrieval navigation item extracted based on a retrieval navigation message generation condition including a rank of said extracted retrieval navigation item, said extracted retrieval navigation item, and an order of retrieval navigation items of said message not extracted in said extracting step;
• and
• outputting said generated message.

An information retrieval navigation method using a processing unit, comprising the steps of:

• extracting a retrieval navigation item among a plurality of retrieval navigation items which meet a retrieval navigation item generation condition in information on a multiplicity of cases, the retrieval navigation item generation condition including definitions of parts of speech including either a noun or a verb, hierarchical rank of the parts of speech, appearance order of the retrieved navigation items registered and the retrieved navigation items of high rank;
• selecting at least one retrieval navigation item from the retrieval navigation items thus generated;
• generating a retrieval navigation message constituting a natural language message from combination of said selected retrieval navigation item with other retrieval navigation item in accordance with a retrieval navigation message generation condition including a rank of said extracted retrieval navigation item, said extracted retrieval navigation item, and an order of retrieval navigation items of said message not extracted in said extracting step;
• extracting a case including said retrieval navigation item selected among said cases;
• and
• outputting said generated retrieval navigation message and a number of cases extracted.

A computer readable storage medium for storing a program used to execute an information retrieval navigation method, said method comprising the steps of:

• extracting a retrieval navigation item among a plurality retrieval navigation items which meet a retrieval navigation item generation condition in information on a multiplicity of cases to be searched, the retrieval navigation item generation condition including definitions of parts of speech including either a noun or a verb, hierarchical rank of the parts of speech, appearance order of the retrieved navigation items registered and the retrieved navigation items of high rank;
• selecting at least one retrieval navigation item from the retrieval navigation items thus generated;
• generating a message including said retrieval navigation item extracted based on a retrieval navigation message generation condition including a rank of said extracted retrieval navigation item, said extracted retrieval navigation item, and an order of retrieval navigation items of said message not extracted in said extracting step;
• extracting a case including said retrieval navigation item selected among said cases;
• and
• outputting said generated message.

An information retrieval system comprising:

• information accumulation means for accumulating information on a plurality of cases to be searched, a retrieval navigation item generation condition including definitions of parts of speech including either a noun or a verb hierarchical rank of the parts of speech, appearance order of the retrieved navigation items registered and the retrieved navigation items of high rank;
• retrieval means for searching the information accumulated in said information accumulation means and retrieving the information based on the parts of speech and the extraction conditions;
• means for generating a message including said retrieval navigation item extracted based on the retrieval navigation item generation condition;
• and
• means for generating retrieval navigation items in accordance with the retrieval navigation item generation condition from the information accumulated in said information accumulation means.

An information retrieval system comprising:

• information accumulation means for accumulating information on a plurality of cases to be searched, a retrieval navigation item generation condition including definitions of parts of speech including either a noun or a verbs hierarchical rank of the parts of speech, appearance order of the retrieved navigation items registered and the retrieved navigation items of high rank;
• retrieval means for searching the information accumulated in said information accumulation means and retrieving part of the information;
• means for extracting a retrieval navigation item among retrieval navigation items which meet a retrieval navigation item generation condition in information accumulated in said information accumulation means;
• means for selecting at least one of said retrieval navigation items generated based on the parts of speech and the extraction conditions;
• means for generating a message including said retrieval navigation item extracted based on a retrieval navigation message generation condition including a rank of said extracted retrieval navigation item, said extracted retrieval navigation item, and an order of retrieval navigation items of said message not extracted in said extracting step;
• and
• means for generating a retrieval navigation message as a natural language message in accordance with the retrieval navigation message generation condition from said selected retrieval navigation item.