English-Chinese Bilingual Phrase Alignment Based on Effective Sentential-Form

The input of a bilingual phrase alignment system is the sets of source language and target language syntax tree Because of translation divergence, there is usually no simple corresponding relation between source language and target language syntax trees How to pick up correct syntax tree pair from candidate trees and reveal the phrase alignment relation is the main problem The concept and method of "relative fixed principle of translation" and "common sentential form" are suitable for this problem The presented theory and algorithm improved the time efficiency