Query Generation System Using Expression Type Dictionaries

The patent introduces a dictionary as an intermediary component that maps between different expression types of features. The dictionary stores correspondence relationships between multiple expression types and standard feature representations, allowing the system to handle diverse database expression types without complex processing logic. When a query is generated, the dictionary automatically translates the input character string according to the appropriate expression type, resolving the contradiction by adding a simple mediating layer rather than increasing overall system complexity.

The patent implements preliminary action by pre-building and storing expression type identification rules and dictionary mappings in advance. The system pre-processes and categorizes different feature expression types, storing their correspondence relationships in dictionaries before actual query execution. During query processing, the system quickly identifies the expression type using pre-established rules and retrieves the corresponding dictionary, avoiding time-consuming analysis during the actual search process and thus reducing processing time while maintaining high search accuracy.

The patent implements self-service by enabling the system to automatically identify the expression type of the input character string and select the appropriate dictionary without user intervention. The system includes an expression type identification module that automatically analyzes the input query, determines its expression type, and retrieves the corresponding dictionary from pre-stored options. This automatic self-service mechanism eliminates the need for users to understand or specify expression type constraints, maintaining high feature matching precision while significantly improving ease of operation.