making tree kernels practical for natural language learning
Báo cáo khoa học: "Making Tree Kernels practical for Natural Language Learning" potx
... acatPPINA subtreeFigure 1: A syntactic parse tree. We define as a subtree (ST) any node of a tree along with all its descendants. For example, theline in Figure 1 circles the subtree rooted in ... different informationlevel between the two tree- based representations.2.2 The Tree Kernel FunctionsThe main idea of tree kernels is to compute thenumber of the common substructures between twotrees ... thatthe above tree kernels are not convolution kernels as those proposed in this article.In (Shen et al., 2003), a tree- kernel based onLexicalized Tree Adjoining Grammar (LTAG) for the parse-reranking...
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Tài liệu Báo cáo khoa học: "Instance-based Sentence Boundary Determination by Optimization for Natural Language Generation" ppt
... system, we currently use exact solution for input size of 7 propositions or less and switch togreedy for any larger input size to ensure sub-secondperformance for the NLG component.02040608010012014016018020024689101214161820# ... 565–572,Ann Arbor, June 2005.c2005 Association for Computational LinguisticsInstance-based Sentence Boundary Determination by Optimization for Natural Language GenerationShimei Pan and James C. ... boundary determination in natural language generation exists when more thanone sentence is needed to convey multiple conceptsand propositions. In the classic natural language generation (NLG)...
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Tài liệu Báo cáo khoa học: "Combining Functionality and Object Orientedness for Natural Language Processing" ppt
... Domain A class is defined for each constant of PAL. A class object for a lexical item contains linguistic knowledge in a procedural form. In other words, a class contains information as to how a ... Portable Natural Language Query System. Artificial Intelligence 19(1982) :165-187, 1982. Montague, R. Proper Treatment of Quantification in Ordinary English. In Thompson (editor), Formal ... to share methods for these cases. Any exceptional method can be attached to lower level items. For example, we can define a class "action verb" which has methods for instrumental...
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Tài liệu Báo cáo khoa học: "A Terminological Simplification Transformation for Natural Language Question-Answering Systems" doc
... Simplification Transformation for Natural Language Question-Answering Systems David G. Stallard BBN Laboratories Inc. I0 Moulton St. Cambridge, MA. 02238 Abstract A new method is presented for simplifying ... issues for natural- language systems which serve as interfaces to a database: the problems that arise in a module which maps the meaning representation to a second logical language for expressing ... exists for physician SPECIALTIES, we can nonetheless give a rule for this predicate in way that is uniform with the rule given for the predicate PATIENTS. 2This term, while a standard one in formal...
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Báo cáo khoa học: "Semantic Information Preprocessing for Natural Language Interfaces to Databases" docx
... application to Natural Language Database Interfacing. Ph.D. Thesis, Royal Institute of Technology, Stockholm, Sweden. 316 Semantic Information Preprocessing for Natural Language Interfaces ... LDT was introduced for a sys- tem, where input is a logical formula, whose predi- cates approximately correspond to the content words of the input utterance in natural language (lexical predicates). ... predicates). Output is a logical formula, consist- ing of predicates meaningful to the database engine (database predicates). AET provides a formalism for describing how a formula consisting of lexical...
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Báo cáo khoa học: "A Computational Theory of ProseStyle for Natural Language Generation" ppt
... motive for doing ~ dictated by the planner. 189 A Computational Theory of Prose Style for Natural Language Generation David D. McDonald and James D. Pnstejovsky Department of Computer and Information ... (1984) "Another Representation Language Offer", PhJ3. Thesis, M1T. McDonald,D. (1984) "[kscription Directed Control: Its implications for natural language generation", International ... & Pustejovsky J. (1985a) WAGs as a Grammatical Formalism for Generation", pr~eedings of the 23rd Annual Meeting of the Association for Computational Linguistics, University of Chicago....
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Báo cáo khoa học: "Efficient Tree-based Approximation for Entailment Graph Learning" doc
... we present Tree- Node-Fix, an efficientapproximation algorithm for Max-Trans-Forest, aswell as Graph-Node-Fix, an approximation for Max-Trans-Graph.4.1 Tree- Node-FixThe scheme of Tree- Node-Fix ... curve.Maximal F1on the curve is .43 for Exact-graph, .41 for TNF, and .34 for No-trans. AUC in the recall range 0-0.5is .32 for Exact-graph, .31 for TNF, and .26 for No-trans.Run-time of LP-relax ... Etzioni.2011. Identifying relations for open information ex-traction. In Proceedings of Empirical Methods in Nat-ural Language Processing.J. R. Finkel and C. D. Manning. 2008. Enforcing transi-tivity...
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Báo cáo khoa học: "A Test Environment for Natural Language Understanding Systems" potx
... the system's performance on that application. The Parseval effort (Black (1991)) attempted to compare parsing performance across systems using the Treebank as a basis for comparison. Although ... have been used in natural language processing for a number of years (ATIS-3 (1991), MUC-6 (1995), Harman and Voorhees (1996)). Although these tests were originally designed for comparing different ... data based on the diagnostic information. Compared with Tgrep (1992) which works only on Treebank trees, ETE provides a more general and powerful search mechanism for a complex database. •...
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Báo cáo khoa học: "THE TEXT SYSTEM FOR NATURAL LANGUAGE GENERATION" doc
... used for TEXT i. 2. 3. 4. identification -requests for definitions attributive -requests for available information constituency -requests for definitions -requests for available information ... detailed attributive information is included. For entities that are very different, only generic class information is included. A combination of this information is included for entities falling ... two generalizations. (See [MCCOY 82] for discussion of information associated with sub-types of database entity classes). 114 THE TEXT SYSTEM FO ~NATURAL LANGUAGE GENERATION: AN OVERVIEW* Kathleen...
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Báo cáo khoa học: "MENTING A DATABASE KNOWLEDGE REPRESENTATION FOR NATURAL LANGUAGE GENERATION" docx
... descriptive information for the sub-classes involves combinatoric problems which depend on the number of records for each entity in the database and the number of sub-classes formed for these ... and descriptive information is generated for each sub-class involved. This process is overseen by the general axioms which may throw out breakdowns for which descriptive information can not ... of independent modules; each is responsible for generating some piece of descriptive information for the sub-classes. When the system is invoked for a particular entity class, it first generates...
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Báo cáo khoa học: "Web Text Corpus for Natural Language Processing" pdf
... Web Text Corpus for Natural Language ProcessingVinci Liu and James R. CurranSchool of Information TechnologiesUniversity of SydneyNSW 2006, Australia{vinci,james}@it.usyd.edu.auAbstractWeb ... gathers informationfrom the hit counts but does not require the com-putationally expensive downloading of actual text for analysis. Unfortunately search engines werenot designed for NLP research ... Nat-ural Language Processing (NLP) tasks.There are many advantages to creating a corpusfrom web data rather than printed text. All webdata is already in electronic form and thereforereadable...
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Báo cáo khoa học: "EMPIRICAL STUDIES OF DISCOURSE REPRESENTATIONS FOR NATURAL LANGUAGE INTERFACES" ppt
... OF DISCOURSE REPRESENTATIONS FOR NATURAL LANGUAGE INTERFACES Ntis Dahlb~ick Ame JOnsson Natural Language Processing Laboratory Department of Computer and Information Science LinkOping University, ... INTRODUCTION Natural Language interfaces will in the fore- seeable future only be able to handle a subset of natural language. The usability of this type of in- terfaces is therefore dependent ... empirical methodology for writing User-Friendly Natural Language computer applications, Proc. CHI "83 Kittredge, R. & Lehrberger, J. (1982) Sub- language. Studies of Language in Restricted...
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