Báo cáo khoa học: "A Model of Early Syntactic Development" docx

... A Model of Early Syntactic Development Pat Langley The Robotics Institute Carnegie-Mellon University Pittsburgh, Pennsylvania 1521,3 USA ABSTRACT AMBER is a model of first language ... some of the major developments observed in children's early speech. 1. Introduction In this paper, I present a model that attempts to explain the regularities in children's early syntactic ... advantage of semantic feedback, and those which do not. In general, the early work concerned itself with learning grammars in the absence of information about the meaning of sentences. Examples of...

Báo cáo khoa học: "A MODEL OF SENTENCE PRODUCTION" pdf

... a model of how to say something, not of what to say. When it arrives at a decision point on what to say, GEMS makes a random choice. Hence, GEMS is not a complete model of the activity of ... entry, the further construction of the sentences meaning is entrusted to the entries in the vocabulary. Examples of how GEMS constructs the meaning of a number of English sentence types are ... is to start the construction process and to keep a record of the order of activation of the lexical entries. The overall scheme of GEMS is represented in Fig. 1 258 KNOWLEDGE STORE /...

Báo cáo khoa học: "A MODEL OF REVISION IN NATURAL LANGUAGE GENERATION" pptx

... follows is an example of the incremental revision of a summary paragraph. The discussion at each step gives an indication of the character of information needed and the types of decisions made ... a similar vein, we may use a computational model of the revision task to assess the computational implications of proposed psychological theories of the writing process. 2. DEFINING THE PROBLEM ... a model of generation with revision, focusing on improving textual coherence. First we estabLish a division of labor within the generation/revision process. Then we look at the phases of...

Báo cáo khoa học: "A Model of Lexical Attraction and Repulsion*" potx

... (We exclude separation of one or two words because of our use of distance models to improve upon trigrams.) The set of 41,263 trigger pairs was partitioned into 20 groups of non-self triggers ... three-parameter family of distance models {Pm,~=,a} of distance models. In Figure 8 we display typical examples of this training algorithm at work. 5 A Nonstationary Language Model To incorporate ... inter- pretation of the two-stage model. 4 Estimating the Parameters In this section we present a solution to the problem of estimating the parameters of the distance models introduced...

Báo cáo khoa học: "A MODEL OF PLAN INFERENCE THAT DISTINGUISHES BETWEEN THE BELIEFS OF ACTORS AND OBSERVERS" pot

... (3) of (P0), that G believes each of his acts plays a role in his plan. Similarly, clause (iii) of (Pl) captures clause (4) of (P0), and clause (iv) of (P1) captures clauses (5) and (6) of ... cussion of these relations and functions can be found in Pollack [14, Chap. 4]. Clause (i) of (P1) captures clause (1) of (P0). 4 Clause (iS) of (P1) captures both clauses (2) and (3) of (P0): ... generation of appropriate responses to queries that arise from invalid plans. In this paper, I report on a model of Pl in conversation that distinguishes between the beliefs of the actor and those of...

Báo cáo khoa học: "A Model for Robust Processing of Spontaneous Speech by Integrating Viable Fragments*" ppt

... greater length is preferred. The coverage of an analysis is 1405 the sum of the lengths of the component analyses it consists of. Note that the coverage of an analysis will be less than its length ... first task of the robust semantic processing is to manage a possibly large number of partial analyses, each spanning a certain sub-interval of the input utterance. The basic mode of processing ... system's performance in terms of coverage and quality of translations by combining frag- mentary analyses when no spanning analysis of the input can be derived because of spontaneous speech phenomena...

Báo cáo khoa học: "A Model-Theoretic Framework for Theories of Syntax" pdf

... study of the formal properties of classes of structures defined in such a way falls within domain of Model Theory, it's not surprising that treatments of the meaning of these systems of ... ing classes of models in L 2 This approach has a K,P* number of strengths. First, as should be clear from our brief explorations of aspects of GPSG and GB~ re-formalizations of existing theories ... dynamic aspect of the original theory in a static way. Here, though, the main significance of the definition is that it forms a component of a full- scale treatment of a GB theory of English S-...

Báo cáo khoa học: "A Part of Speech Estimation Method for Japanese Unknown Words using a Statistical Model of Morphology and Context" pptx

... The first model is Equation (12), which is a set of word models trained for each part of speech (POS + Poisson + bigram). The second model is Equa- tion (13), which is a set of word models trained ... useful for modeling the morphology of Japanese words. 4.3 Part of Speech Prediction Accuracy without Context Figure 3 shows the part of speech prediction accuracy of two unknown word model without ... Distribution In word segmentation, one of the major problems of the word length model of Equation (6) is the decom- position of unknown words. When a substring of an unknown word coincides with...

Tài liệu Báo cáo khoa học: A role of miR-27 in the regulation of adipogenesis ppt

... thatexpression of miR-27 resulted in blockade of expression of PPARc andC ⁄ EBPa, the two master regulators of adipogenesis. Importantly, expression of miR-27 was increased in fat tissue of obese ... role of miR-27 in the regulation of adipogenesisQun Lin1, Zhanguo Gao2, Rodolfo M. Alarcon1, Jianping Ye2and Zhong Yun11 Department of Therapeutic Radiology, Yale University School of ... regulation of miR-27 expression. Ourdata suggest that the miR-27 gene family is potentiallyan important class of negative regulators of adipogene-sis and may play a role in the regulation of adiposefunctions...

Tài liệu Báo cáo khoa học: "A study of Information Retrieval weighting schemes for sentiment analysis" doc

... number of times term i occurs inD, idfiis the inverse document frequency of termi, N is the total number of documents and dfiisthe number of documents that contain term i.The utilization of ... per-formance of the former tend to be superior to that of the latter (Mullen and Collier, 2004; Lin andHe, 2009). One of the main issues for supervisedapproaches has been the representation of docu-ments. ... book of Pang and Lee (2008) presentsa thorough overview of the research in the ﬁeld.This section presents the most relevant work.Pang et al. (2002) conducted early polarityclassiﬁcation of...

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