Accession Number:

ADA460577

Title:

Extracting Structural Paraphrases from Aligned Monolingual Corpora

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE ARTIFICIAL INTELLIGENCE LAB

Personal Author(s):

Report Date:

2003-01-01

Pagination or Media Count:

9.0

Abstract:

We present an approach for automatically learning paraphrases from aligned monolingual corpora. Our algorithm works by generalizing the syntactic paths between corresponding anchors in aligned sentence pairs. Compared to previous work, structural paraphrases generated by our algorithm tend to be much longer on average, and are capable of capturing long-distance dependencies. In addition to a standalone evaluation of our paraphrases, we also describe a question answering application currently under development that could immensely benefit from automatically-learned structural paraphrases. for large-scale applications, attention has recently focused on techniques for automatically acquiring paraphrases. We present an unsupervised method for acquiring structural paraphrases,

Subject Categories:

  • Linguistics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE