TAILIEUCHUNG - Báo cáo khoa học: "An Empirical Investigation of Proposals in Collaborative Dialogues"

We describe a corpus-based investigation of proposals in dialogue. First, we describe our DR/compliant coding scheme and report our inter-coder reliability results. Next, we test several hypotheses about what constitutes a well-formed proposal. 1 Introduction we report our findings .on tracking agreement. 2 Tracking Agreement Our corpus consists of 24 computer-mediated dialogues 1 in which two participants collaborate on a simple task of buying furniture for the living and dining rooms of a house (a variant of the task in (Walker, 1993)). . | An Empirical Investigation of Proposals in Collaborative Dialogues Barbara Di Eugenio Pamela w. Jordan Johanna D. Moore Richmond H. Thomason Learning Research Development Center and Intelligent Systems Program University of Pittsburgh Pittsburgh PA 15260 USA dieugeni j ordan jmoore thomason @ Abstract We describe a corpus-based investigation of proposals in dialogue. First we describe our DRI compliant coding scheme and report our inter-coder reliability results. Next we test several hypotheses about what constitutes a well-formed proposal. 1 Introduction Our project s long-range goal see http . intgen is to create a unified architecture for collaborative discourse accommodating both interpretation and generation. Our computational approach Thomason and Hobbs 1997 uses a form of weighted abduction as the reasoning mechanism Hobbs et al. 1993 and modal operators to model context. In this paper we describe the corpus study portion of our project which is an integral part of our investigation into recognizing how conversational participants coordinate agreement. From our first annotation trials we found that the recognition of classical speech acts Austin 1962 Searle 1975 by coders is fairly reliable while recognizing contextual relationships . whether an utterance accepts a proposal is not as reliable. Thus we explore other features that can help US recognize how participants coordinate agreement. Our corpus study also provides a preliminary assessment of the Discourse Resource Initiative DRI tagging scheme. The DRI is an international grassroots effort that seeks to share corpora that have been tagged with the core features of interest to the discourse community. In order to use the core scheme it is anticipated that each group will need to refine it for their particular purposes. A usable draft core scheme is now available for experimentation see http luperfoy Discourse-Treebank . Whereas several .

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