tailieunhanh - Báo cáo khoa học: "Modeling Local Coherence: An Entity-based Approach"

This paper considers the problem of automatic assessment of local coherence. We present a novel entity-based representation of discourse which is inspired by Centering Theory and can be computed automatically from raw text. We view coherence assessment as a ranking learning problem and show that the proposed discourse representation supports the effective learning of a ranking function. Our experiments demonstrate that the induced model achieves significantly higher accuracy than a state-of-the-art coherence model. . | Modeling Local Coherence An Entity-based Approach Regina Barzilay Computer Science and Artificial Intelligence Laboratory Massachusetts Institute of Technology regina@ Mirella Lapata School of Informatics University of Edinburgh mlap@ Abstract This paper considers the problem of automatic assessment of local coherence. We present a novel entity-based representation of discourse which is inspired by Centering Theory and can be computed automatically from raw text. We view coherence assessment as a ranking learning problem and show that the proposed discourse representation supports the effective learning of a ranking function. Our experiments demonstrate that the induced model achieves significantly higher accuracy than a state-of-the-art coherence model. 1 Introduction A key requirement for any system that produces text is the coherence of its output. Not surprisingly a variety of coherence theories have been developed over the years . Mann and Thomson 1988 Grosz et al. 1995 and their principles have found application in many symbolic text generation systems . Scott and de Souza 1990 Kibble and Power 2004 . The ability of these systems to generate high quality text almost indistinguishable from human writing makes the incorporation of coherence theories in robust large-scale systems particularly appealing. The task is however challenging considering that most previous efforts have relied on handcrafted rules valid only for limited domains with no guarantee of scalability or portability Reiter and Dale 2000 . Furthermore coherence constraints are often embedded in complex representations . Asher and Lascarides 2003 which are hard to implement in a robust application. This paper focuses on local coherence which captures text relatedness at the level of sentence-to- sentence transitions and is essential for generating globally coherent text. The key premise of our work is that the distribution of entities in locally coherent texts .

• Báo cáo khoa học
• Modeling Local Coherence
• An Entity based Approach
• Regina Barzilay Mirella Lapata
• báo cáo khoa học
• mô hình ngôn ngữ
• xử lý ngôn ngữ tự nhiên
• Bài giảng Xử lý ngôn ngữ tự nhiên
• Ngôn ngữ tự nhiên
• Kỹ thuật lập trình
• Xử lý nhập nhằng ngữ nghĩa
• Xử lý ngữ nghĩa
• Xử lý ngôn ngữ
• Natural Language Processing
• Ngôn ngữ lập trình
• Nhập nhằng cấu trúc
• Tri thức về ngôn ngữ
• Mô hình n gram
• Dịch máy
• Phương pháp dịch máy
• Hiểu ngôn ngữ
• Phân tích ngữ nghĩa
• Phân loại tin tự động
• Biểu diễn vị từ
• Thuộc tính về sự kiện
• Thuộc tính về sự kiện
• Mô hình ngôn ngữ Google Book N grams
• Mô hình ngôn ngữ KenLM
• Phương pháp làm mịn
• Tách từ tiếng Việt
• Gán nhãn từ loại
• Phân tích cú pháp
• Nghĩa từ vựng
• Phân giải nhập nhằng từ
• Phân loại văn bản
• Lexical chain
• Phản hồi thông tin
• Bài toán PTCP
• Cấu trúc ngữ pháp
• Phân tích cú pháp xác suất
• CKY kết hợp xác suất
• Văn phạm phi ngữ cảnh xác suất
• Hình thái học