Advanced Decision Systems: description of the CODEX system as used for MUC-3

ADS has been developing an approach to text processing, called CODEX, COntext directed Data EXtraction), that couples a concept-based, probabilistic keyword pattern matcher, called RUBRIC, with a probabilistic, generalized graph composition chart parser, called CAUCUS. We configure these two key technologies together for a variety of natural language sorting and gisting applications to provide greater depth of analysis (higher precision) than keyword-based techniques alone, as well as higher throughput and greater breadth of coverage than parsing techniques alone.