Frame-based blackboard expert system for signal processing

摘要

The selection of an appropriate filter for a given signal is a complex problem that requires both numerical and symbolic processing. To that end a coupled expert system (FILTEX) was developed by upgrading a professional digital signal processing software package (SIG) with symbolic knowledge representing expert heuristics and experience required for filter selection. In order to realize opportunistic filter selection strategies, the blackboard architecture was applied. The design of the FILTEX blackboard components and the frame-based realization in IF/Prolog programming language are given, ending with a sample session with the system.