TAILIEUCHUNG - Báo cáo khoa học: "Minimal Recursion Semantics as Dominance Constraints: Translation, Evaluation, and Analysis"

We show that a practical translation of MRS descriptions into normal dominance constraints is feasible. We start from a recent theoretical translation and verify its assumptions on the outputs of the English Resource Grammar (ERG) on the Redwoods corpus. The main assumption of the translation— that all relevant underspecified descriptions are nets—is validated for a large majority of cases; all non-nets computed by the ERG seem to be systematically incomplete. | Minimal Recursion Semantics as Dominance Constraints Translation Evaluation and Analysis Ruth Fuchss 1 Alexander Koller 1 Joachim Niehren 2 and Stefan Thater1 1 Dept. of Computational Linguistics Saarland University Saarbrucken Germany 2 INRIA Futurs Lille France fuchss koller stth @ Abstract We show that a practical translation of MRS descriptions into normal dominance constraints is feasible. We start from a recent theoretical translation and verify its assumptions on the outputs of the English Resource Grammar ERG on the Redwoods corpus. The main assumption of the translation that all relevant underspecified descriptions are nets is validated for a large majority of cases all non-nets computed by the ERG seem to be systematically incomplete. 1 Introduction Underspecification is the standard approach to dealing with scope ambiguity Alshawi and Crouch 1992 Pinkal 1996 . The readings of underspecified expressions are represented by compact and concise descriptions instead of being enumerated explicitly. Underspecified descriptions are easier to derive in syntax-semantics interfaces Egg et al. 2001 Copestake et al. 2001 useful in applications such as machine translation Copestake et al. 1995 and can be resolved by need. Two important underspecification formalisms in the recent literature are Minimal Recursion Semantics MRS Copestake et al. 2004 and dominance constraints Egg et al. 2001 . MRS is the underspecification language which is used in large-scale HPSG grammars such as the English Resource Grammar ERG Copestake and Flickinger 2000 . The main advantage of dominance constraints is that they can be solved very efficiently Althaus et al. 2003 Bodirsky et al. 2004 . Niehren and Thater 2003 defined in a theoretical paper a translation from MRS into normal dominance constraints. This translation clarified the precise relationship between these two related formalisms and made the powerful meta-theory of dominance constraints accessible to MRS. Their .

• Báo cáo khoa học
• Minimal Recursion Semantics
• Dominance Constraints
• Translation
• Evaluation
• Analysis
• báo cáo khoa học
• mô hình ngôn ngữ
• xử lý ngôn ngữ tự nhiên
• Bridging the Gap
• Underspecification Formalisms
• Minimal Recursion Semantics as Dominance Constraints
• 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