TAILIEUCHUNG - Báo cáo khoa học: "Evaluating Centering-based metrics of coherence for text structuring using a reliably annotated corpus"

We use a reliably annotated corpus to compare metrics of coherence based on Centering Theory with respect to their potential usefulness for text structuring in natural language generation. Previous corpus-based evaluations of the coherence of text according to Centering did not compare the coherence of the chosen text structure with that of the possible alternatives. | Evaluating Centering-based metrics of coherence for text structuring using a reliably annotated corpus Nikiforos Karamanis Massimo Poesio Chris Mellish and Jon Oberlander School of Informatics University of Edinburgh UK nikiforo jon @ Dept. of Computer Science University of Essex UK poesio at essex dot ac dot uk Dept. of Computing Science University of Aberdeen UK cmellish@ Abstract We use a reliably annotated corpus to compare metrics of coherence based on Centering Theory with respect to their potential usefulness for text structuring in natural language generation. Previous corpus-based evaluations of the coherence of text according to Centering did not compare the coherence of the chosen text structure with that of the possible alternatives. A corpusbased methodology is presented which distinguishes between Centering-based metrics taking these alternatives into account and represents therefore a more appropriate way to evaluate Centering from a text structuring perspective. 1 Motivation Our research area is descriptive text generation O Donnell et al. 2001 Isard et al. 2003 . the generation of descriptions of objects typically museum artefacts depicted in a picture. Text 1 from the GNOME corpus Poesio et al. 2004 is an example of short human-authored text from this genre 1 a 144 is a torc. b Its present arrangement twisted into three rings may be a modern alteration c it should probably be a single ring worn around the neck. d The terminals are in the form of goats heads. According to Centering Theory Grosz et al. 1995 Walker et al. 1998a an important factor for the felicity of 1 is its entity coherence the way CENTERS discourse entities such as the referent of the NPs 144 in clause a and its in clause b are introduced and discussed in subsequent clauses. It is often claimed in current work on in natural language generation that the constraints on felicitous text proposed by the theory are useful to guide text structuring in combination

• Báo cáo khoa học
• Evaluating Centering based metrics of coherence
• text structuring
• a reliably annotated corpus
• 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