By Michael C. Loui
Communications of the ACM,
Vol. 19 No. 9, Pages 509-513
10.1145/360336.360340
Comments
The nodes of a weighted derivation tree are associated with weighting functions over the vocabulary of a context-free grammar. An algorithm is presented for constructing the optimal derivation tree having the same structure as a given weighted derivation tree. In addition, the correctness of the algorithm is established. The method may be applied to problems involving probabilistic parsing or combinatorial optimization.
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