Evaluating Centering for Information Ordering using Corpora

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• Nikiforos Karamanis, University of Cambridge
• Friday 17 November 2006, 12:00-13:00
• SW01 Computer Laboratory.

If you have a question about this talk, please contact NLIP Seminars.

In this talk, I will motivate the use of Centering-based metrics of coherence for information ordering in automatic text production and discusses how a wide range of such metrics can be defined on the basis of the existing Centering literature. Then, I will estimate empirically which is the most promising metric and how useful this metric is using a novel and general methodology applied on several corpora.

The main result is that the simplest metric (and most remote to Centering) sets a baseline that cannot be overtaken by other metrics which make use of more Centering-specific concepts. This simple, yet robust, baseline can be used by both text-to-text and concept-to-text practitioners for interim evaluation during system development.

This talk is part of the NLIP Seminar Series series.

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