TASC: Description of the TASC System Used for MUC-7

TASC has recently developed a technology for learning scenario-templateextraction grammars from examples provided by end-users with no special computational or linguistic knowledge. For straightforward scenario-template problems, complete extraction systems can be learned from scratch in a few hours. The learned systems are fast, robust, and as accurate as carefully handcrafted systems. For more complex extraction problems, such as the MUC-7 task, the grammars can still be learned automatically, but some computational-linguistic work may be required for complex template merging and inference.