Abstract:

Compared with the current destination decision system usually processes user input on the grammatical level, a means for understanding the user input on the pragmatic level by using logic inference engine are proposed. Within a searching context, composed of the common sense of tourism, situation variables and user information, the engine could infer user truly requirement on the pragmatic level. And this inference engine is implemented by doing some alternation to a disjunctive datalog system（DLV）to handle user preferences and desires. The ASP ( answer set programming) can be implemented with the engine.

Key words: destination decision system, answer set programming, reasoning