- K. Parton, K. McKeown, B. Coyne, Mona T. Diab, R. Grishman, Dilek Z. Hakkani-Tür, M. Harper, Heng Ji, Wei-Yun Ma, Adam Meyers, Sara Rosenthal, Ang Sun, Gökhan Tür, W. Xu, S. Yaman. 2009. Who, What, When, Where, Why? Comparing Multiple Approaches to the Cross-Lingual 5W Task. Abstract: Cross-lingual tasks are especially difficult due to the compounding effect of errors in language processing and errors in machine translation (MT). In this paper, we present an error analysis of a new cross-lingual task: the 5W task, a sentence-level understanding task which seeks to return the English 5W's (Who, What, When, Where and Why) corresponding to a Chinese sentence. We analyze systems that we developed, identifying specific problems in language processing and MT that cause errors. The best cross-lingual 5W system was still 19% worse than the best monolingual 5W system, which shows that MT significantly degrades sentence-level understanding. Neither source-language nor target-language analysis was able to circumvent problems in MT, although each approach had advantages relative to the other. A detailed error analysis across multiple systems suggests directions for future research on the problem.
