Báo cáo khoa học: "Convolution Kernels with Feature Selection for Natural Language Processing Tasks" docx

... Convolution Kernels with Feature Selection for Natural Language Processing TasksJun Suzuki, Hideki Isozaki and Eisaku MaedaNTT Communication ... features, is quite natural. We note, however,that kernels are calculated using the DP algorithm.Therefore, it is not clear how to calculate kernels ef-ﬁciently with a statistical feature selection ... convolution kernels. This paper discusses this issue of convolution kernels, and proposes a new method based on statis-tical feature selection. The proposed method dealsonly with those features...

Tài liệu Báo cáo khoa học: "Combining Functionality and Object Orientedness for Natural Language Processing" ppt

... for Natural Language Processing Toyoakl Nishida I and Shuji Doshita Department of Information Science, Kyoto University Sakyo-ku, Kyoto 606, JAPAN Abstract This paper proposes a method for ... Applicative Language) . In PAL, new composite expressions are constructed only with a binary form of function application. Thus, if z and I/ are well-formed formulas of PAL, so is a form z(y). ... expressions of natural language as follows: Generally, when a phrase consists of its immediate descendants, say z and y, a PAL expression for the phrase is one of the following forms: <z>(...

Báo cáo khoa học: "A Computational Theory of ProseStyle for Natural Language Generation" ppt

... A 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 ... point on the NP aoo:~, allowing additional information to be added to me surface structure. The realization class as,soctated with the language field for the Ashanti is ~e-verb, represented in ... one-proposition -for- one-sentence forced style by permitting the combination of individual information units (of comparable compiexity to our own) into compound sentences interspersed with rhetorical...

Báo cáo khoa học: "MENTING A DATABASE KNOWLEDGE REPRESENTATION FOR NATURAL LANGUAGE GENERATION" docx

... additional descriptive information based on standard features which is used to identify the database information associated with each entity and to indicate the distinguishing features of the entities. ... 157 records. It generated sub-type information for 7 entities and ran in approximately 159157 CPU seconds. For a database with many more records, the processing time may grow exponentially. ... values of the attributes within the sub-class with the values within each other sub-class in turn. This calculation yields two other pieces of important information. If for a particular sub-class...

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 interfaces is therefore dependent ... cating with a person. This is unfortunate, since those researchers who have considered the issue have noted that the language used when commu- nicating with a real or simulated natural language...

Báo cáo khoa học: "Domain Adaptation with Active Learning for Word Sense Disambiguation" pdf

... together withoutMAP estimation such as count-merging. For WSD,Fujii et al. (1998) used selective sampling for aJapanese language WSD system, Chen et al. (2006)used active learning for 5 verbs ... pro-gram in one of our prior work (Lee and Ng, 2002).In performing WSD with a naive Bayes classiﬁer,the sense s assigned to an example with featuresf1, . . . , fnis chosen so as to maximize:p(s)nj=1p(fj|s)In ... active learning for domain adaptation for WSD.A similar work is the recent research by Chen et al.(2006), where active learning was used successfullyto reduce the annotation effort for WSD of 5...

Báo cáo khoa học: "Reducing Approximation and Estimation Errors for Chinese Lexical Processing with Heterogeneous Annotations" pot

... supplementalmaterial for research purposes.basic language units, i.e. words, word segmentationand POS tagging are important initial steps for Chi-nese language processing. Supervised learning with speciﬁcally ... 5th Interna-tional Joint Conference on Natural Language Process-ing, pages 309–317, Chiang Mai, Thailand, Novem-ber. Asian Federation of Natural Language Processing. David H. Wolpert. 1992. Original ... predict the POS tag with positionalinformation for each character. Each character canbe assigned one of two possible boundary tags: “B” for a character that begins a word and “I” for a char-acter...

Báo cáo khoa học: "A Framework of Feature Selection Methods for Text Categorization" potx

... procedure to reduce the feature dimensionality is called feature selection (FS). Various FS methods, such as document frequency (DF), information gain (IG), mutual information (MI), 2χ-test ... categories, i.e., /i iA B. The terms with a high ratio are often referred to as the terms with high category information. These two measurements form the basis for all the measurements that are ... following formula (Yang and Pedersen, 1997) ( , ) log( ( | )) log( ( ))i iI t c P t c P t= − 694Therefore, this method might perform badly when common terms are informative for classification....

Tài liệu Báo cáo khoa học: "Demonstration of the UAM CorpusTool for text and image annotation" docx

... necessary where software for automatic annotation has not been available, e.g., for linguistic patterns which are not easily identi-fied by machine, or for languages without suffi-cient linguistic ... scheme for each layer (by clicking on the “edit” button shown with each layer panel). It also allows the user to add or delete source files to the project, and to open a specific file for annotation ... annotated at this layer. For instance, if a feature is renamed in the scheme editor, it is also renamed in all annotation files. The user can also associate a gloss with each tag, and during...

Báo cáo khoa học: "A Web-based Evaluation Framework for Spatial Instruction-Giving Systems" docx

... Association for Computational Linguistics, pages 49–54,Jeju, Republic of Korea, 8-14 July 2012.c2012 Association for Computational LinguisticsA Web-based Evaluation Framework for Spatial ... navigation instructions in the real world for pedestrians is an interesting research problem for researchers in both computational linguisticsand geo-informatics (Dale et al., 2003; Richter andDuckham, ... but also during the development cycle.Consequently, there is a need for a common platformto effectively compare the performances of verbalnavigation systems developed by different teams us-ing...

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