A Performance Metric for Coreference Resolution: Constrained Entity-Alignment F-Measure (CEAF)

The paper proposes a Constrained Entity- Alignment F-Measure (CEAF) for coreference resolution based on the best one-one map between reference and system entities. An efficient algorithm is presented to compute the proposed metric. Problems associated with the MUC link-based F-measure (and its variation B-cube F-measure) are fixed in the proposed metrics. Compared with ACE-value, the official metric in the ACE task, the proposed metrics are easier to interpret.

By: Xiaoqiang Luo

Published in: RC23543 in 2005

LIMITED DISTRIBUTION NOTICE:

This Research Report is available. This report has been submitted for publication outside of IBM and will probably be copyrighted if accepted for publication. It has been issued as a Research Report for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of IBM prior to publication should be limited to peer communications and specific requests. After outside publication, requests should be filled only by reprints or legally obtained copies of the article (e.g., payment of royalties). I have read and understand this notice and am a member of the scientific community outside or inside of IBM seeking a single copy only.

rc23543.pdf

Questions about this service can be mailed to reports@us.ibm.com .