This paper describes a method to enhance the performance ofa unification-style bottom-up chart parser by means oftop-down filtering techniques. The filter developed consists of a syntactic module which prevents the construction of redundant edges in the chart by ensuring that a proposed edge in the chart can really be syntactically combined with neighboring edgeslater, and a semantic module which ensures that the semantic information in a proposed edge in the chart is compatible with semantic information in other edges.
Sayan Bhattacharyya, Steven L. Lytinen