摘要
This paper presents a two-agent framework to build a natural langua g e query interface for IC information system, focusing more on scope queries in a single English sentence. The first agent, parsing agent, syntactically p rocesses and semantically interprets natural language sentence to construct a fu zzy structured query language (SQL) statement. The second agent, defuzzif ying agent, defuzzifies the imprecise part of the fuzzy SQL statement into its e quivalent executable precise SQL statement based on fuzzy rules. The first agent can also actively ask the user some necessary questions when it manages to disa mbiguate the vague retrieval requirements. The adaptive defuzzification approach employed in the defuzzifying agent is discussed in detail. A prototype interface has been implemented to demonstrate the effectiveness.
This paper presents a two-agent framework to build a natural language query interface for IC in-formation system,focusing more on scope queries in a single English sentence.The first agent,parsing agent,syntactically processes and semantically interprets matural language sentence to construct a fuzzy structured query language(SQL) statement.The second agent,defuzzifying agent,defuzzifies the imprecise part of the fuzzy SQL statement into its equivalent executable precise SQL statement based on fuzzy reles.The first agent can also actively ask the user come necessary questions when it manages to dissmbiguate the vague retrieval requirements.The adqptive defuzzification approach employed in the defuzzifying agent is discussed in detail.A prototype interface has been implemented to demonstrate the effectiveness.
