PURPOSE: To obtain an information retrieval unit that can provide an answer for retrieval within a practically reasonable processing period of time with a practically reasonable program length based on retrieval information including fuzziness.
CONSTITUTION: Instead of applying gene algorithm to operation in operating means 5a-5d to carry out wasteful carpet bombing like retrieval of the area and depth of a high dimensional space that becomes an object of retrieval due to the fuzziness of retrieval information, information having provided retrieval information is effectively searched for, and further a nerve circuit network is applied to processing means 6a-6d, a sum of products of ignition pattern and synapsis coupling matrix and threshold value processing are repeatedly executed so as to constitute retrieval information to correctly remember memory from part of input or input with extremely large noise. Thus, information retrieval processing that the conventional way of processing causes an 'accidental explosion of the number of cases' and induces 'an extreme complication of program' can now be executed within a practically reasonable period of time without accompanying complication of large control.
ISHII TOSHINAO
IWAMOTO TAKASHI
