基于相似性评估的近似实例求解策略

Acquiring Similar Example Based on Similarity Estimate

提出在基于实例的英汉机译中，一种基于相似性评估的近似实例求解策略·首先，对知识源进行预处理，包括树库、片段库及片段组合库的构建；其次，对输入句子进行预处理，包括句法分析树的建立，合法片段的抽取及片段组合形式的转换；最后，测量片段至句子的相似性，依据相似性阀值获取输入句子的所有近似实例·实验结果表明。

A kind of strategy of acquiring similar examples based on similarity estimate was proposed. In the implementation,the knowledge source is preprocessed first. This process includes the construction of the tree bank,the fragment bank and the fragment combination bank. Then the input sentence is preprocessed. This process includes the establishment of the parse tree, the extraction of the legal fragments and the transformation of the fragment combination forms. Finally,according to the set similarity threshold,all similar examples of the input sentence are acquired through the similarity measurement from fragment to sentence by utilizing the statistics based similarity estimate technique.