Utterance sentence extension apparatus, utterance sentence generator apparatus, utterance sentence extension method, and program

An utterance sentence expansion method, comprising

• inserting, for an utterance that is an utterance to be expanded that includes a noun and an unknown input and are morphologically analyzed in advance, by an expander using information of an expansion dictionary, the expansion dictionary including a plurality of higher-level categories of the noun, one or more higher-level categories of the plurality of higher-level categories of the expansion dictionary corresponding to the noun included in the utterance into a position before a first noun of the utterance to generate an expanded utterance, wherein
• the first noun is automatically indicated by a space and a symbol.

A computer-readable non-transitory recording medium storing computer-executable program instruction that when executed by a processor cause a computer system to:

• insert, for an utterance that is an utterance to be expanded that includes a noun and an unknown input and are morphologically analyzed in advance, by an expander using information of an expansion dictionary, the expansion dictionary including a plurality of higher-level categories of the noun, one or more higher-level categories of the plurality of higher-level categories of the expansion dictionary corresponding to the noun included in the utterance into a position before the noun of the utterance to generate an expanded utterance, wherein
• the first noun is automatically indicated by a space and a symbol.