2. The system according to claim 1 , characterized in that, said processor is further configured to: calculate a rough matching degree between words stored in said memory device according to the ideal sliding trajectory features and said user-sliding trajectory features set.
2. The system according to claim 1 , characterized in that, said processor is further configured to: calculate a rough matching degree between words stored in said memory device according to the ideal sliding trajectory features and said user-sliding trajectory features set. 4. The system according to claim 2 , characterized in that, said processor is further configured to apply an incremental calculation method or a prefix matching method to calculate the rough matching degree.