evaluation of machine learning methods for natural language processing tasks
Báo cáo khoa học: "Convolution Kernels with Feature Selection for Natural Language Processing Tasks" docx
... performing these tasks. In general wecan say that the use of structural features can im-prove the performance of NLP tasks that require thedetails of the contents to perform the task.Most of ... successfully applied to tasks in natural language processing (NLP). Espe-cially, state -of- the-art performance can be achievedwith kernel methods, such as Support Vector Machine (Cortes and Vapnik, ... ker-nels, are advantageous for both the concept and ac-curacy of many natural language processing (NLP) tasks. Experiments have, however, shown that theover-fitting problem often arises when these...
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Báo cáo khoa học: "A Re-examination of Machine Learning Approaches for Sentence-Level MT Evaluation" ppt
... tests for machine translation evaluation. In Proceedings of the 2004 Confer-ence on Empirical Methods in Natural Language Processing (EMNLP-04).Alex Kulesza and Stuart M. Shieber. 2004. A learning ... inthe flexibility of the learning framework, which al-lows for new features to be added. Moreover, adap-tive learning methods may be applicable if a smallsample of outputs of some representative ... and Chris Brockett.2001. A machine learning approach to the automatic eval-uation of machine translation. In Proceedings of the 39thAnnual Meeting of the Association for Computational Lin-guistics,...
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Tài liệu Báo cáo khoa học: "The Use of Ooject-Special Knowledge in Natural Language Processing" doc
... "comprehension" of natural language texts by computer. That Is, we were primarily concerned with the introduction of stereotyplc knowledge of objects into the conceptual analysis of text. ... eliminated. OPUS makes use of a well structured set of memory associations for objects, the Object Primitives, to encode Information which can be used in a variety of Rleger's qeneral ... kinds of associative memory required to produce what appeared from Rieger's model to ~e the "tremendous amount of 'hidden' computation" necessary for the processing of...
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Tài liệu Báo cáo khoa học: "Combining Functionality and Object Orientedness for Natural Language Processing" ppt
... method) for handling incoming messages of its instances. A class inherits methods of its superclasses. Z. Interpretation of PAL Expressions in Object-Oriented Domain A class is defined for each ... result of the evaluation is a new version of the object runs0, say runs 1. The above discussion is overly simplified for the purpose of explanation. The following sections discuss a number of ... evaluating the form which results from replacing each constant of a given PAL expression by an instance of an object whose class name is the same as the label of the constant. The evaluation is...
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Báo cáo khoa học: "Web Text Corpus for Natural Language Processing" pdf
... Web Text Corpus for Natural Language Processing Vinci Liu and James R. CurranSchool of Information TechnologiesUniversity of SydneyNSW 2006, Australia{vinci,james}@it.usyd.edu.auAbstractWeb ... vectors of headwords in the corpusto determine the most similar terms.6.2 Evaluation The evaluation of a list of synonyms of a targetword is subject to human judgement. We use the evaluation ... performed a widerange of NLP tasks using web data by queryingAltavista and Google. This included variety of generation tasks (e.g. machine translation candi-date selection) and analysis tasks...
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Báo cáo khoa học: "A Comparative Study of Parameter Estimation Methods for Statistical Natural Language Processing" potx
... Because of the high-dimensional nature of natural language, it is often easy to generate an extremely large number of features. The challenge of parameter estimation is to find a combination of ... Republic, June 2007.c2007 Association for Computational LinguisticsA Comparative Study of Parameter Estimation Methods for Statistical Natural Language Processing Jianfeng Gao*, Galen Andrew*, ... compared five of the most competitive para-meter estimation methods on four NLP tasks em-ploying a variety of models, and the results were remarkably consistent across tasks. Three of the methods...
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Evaluation of Distance Learning for Health Education pot
... even more difcult for them to obtain healthcare due to isolation. Distance learning provides an option of decreased isolation, but this Evaluation of Distance Learning for Health EducationKelley ... the two sites returning evaluation forms. Study limitations include the fact that only seven sites continue to make use of the distance learning sessions, Evaluation of program effectiveness ... lack of healthcare providers in rural areas, a lack of trust in western medicine and a general lack of understanding of health issues. In addition, since people with the least resources often...
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Báo cáo khoa học: "Making Tree Kernels practical for Natural Language Learning" potx
... Ker-nel methods for relation extraction. Journal of Machine Learning Research.Dell Zhang and Wee Sun Lee. 2003. Question classifica-tion using support vector machines. Inproceedings of SI-GIR’03, ... (production of( n1) > production of( n2))then n2= extract(L2);else if (production of( n1) < production of( n2))then n1= extract(L1);elsewhile (production of( n1) == production of( n2))while ... rolesassociated with verbal predicates, for a total of 37,948 arguments. We randomly selected 30% of sentences for testing and 70% for training. Addi-tionally, 30% of training was used as a validation-set....
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Báo cáo khoa học: "A Computational Theory of ProseStyle for Natural Language Generation" ppt
... Computational Theory of Prose Style for Natural Language Generation David D. McDonald and James D. Pnstejovsky Department of Computer and Information Science University of M~,=.~chnsetts at ... looked at our treatment of four of the five points which we said at the onset of this paper had to b,~ considered by any theory of prose style. The fifth point, the kinds of information stylistic ... (1985a) WAGs as a Grammatical Formalism for Generation", pr~eedings of the 23rd Annual Meeting of the Association for Computational Linguistics, University of Chicago. McDonald D. & Pustejovsky...
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Báo cáo khoa học: "EMPIRICAL STUDIES OF DISCOURSE REPRESENTATIONS FOR NATURAL LANGUAGE INTERFACES" ppt
... EMPIRICAL STUDIES OF DISCOURSE REPRESENTATIONS FOR NATURAL LANGUAGE INTERFACES Ntis Dahlb~ick Ame JOnsson Natural Language Processing Laboratory Department of Computer and Information Science ... future only be able to handle a subset of natural language. The usability of this type of in- terfaces is therefore dependent on finding subsets of natural language that can be used without the ... Tennant, H. (1981) Evaluation of Natural Language Processors Ph.D. Thesis, University of Illinois at Urbana-Champaign. Thomas, J.C. (1976) A method for studying natural language dialogue....
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Báo cáo khoa học: "A Seed-driven Bottom-up Machine Learning Framework for Extracting Relations of Various Complexity" pdf
... Califf and R. J. Mooney. 2004. Bottom-Up Rela-tional Learning of Pattern Matching Rules for Infor-mation Extraction. Journal of Machine Learning Re-search, MIT Press. W. Drozdzynski, H U.Krieger, ... use PI for Person_In, PO for Person_Out, POS for Position and ORG for Organisation. In our experiments, we attempt to investigate the influence of the size of the seed and the size of the ... seeds for the next iteration of the learning cycle. The cycle termi-nates when no new relations can be acquired. The linguistic annotation is responsible for en-riching the natural language...
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Báo cáo khoa học: "a Method for Automatic Evaluation of Machine Translation" pot
... In Proceedings of the First Conference of the Association for Machine Translation in the Ameri-cas, pages 193–205, Columbia, Maryland. BLEU: a Method for Automatic Evaluation of Machine TranslationKishore ... judgeswhich substitutes for them when there isneed for quick or frequent evaluations.11 Introduction1.1 RationaleHuman evaluations of machine translation (MT)weigh many aspects of translation, ... output of Chinese-English MT systems.ReferencesE.H. Hovy. 1999. Toward finelydifferentiated evaluation metrics for machine translation. In Proceedings of theEagles Workshop on Standards and Evaluation, ...
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