Bidirectional Models

This paper examines tagging models for spon- taneous English speech transcripts. We ana- lyze the performance of state-of-the-art tag- ging models, either generative or discrimi- native, left-to-right or bidirectional, with …...

Bidirectional models of word alignment are an appealing alternative to post-hoc combinations of directional word align- ers. Unfortunately, most bidirectional formulations are NP-Hard to solve, and a previous attempt to …...