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

Báo cáo khoa học: "A Comparison of Document, Sentence, and Term Event Spaces" potx

... fre-quency of a term in the document space (x) and the average frequency of the same set of terms in the sentence space (y). For example, the average number of sentences for the set of terms ... full-text of a document. We com-pared the abstract and non-abstract terms in each of the three language models. Not all of the documents distinguished the ab-stract from the body. Of the 100,830 ... One component of the corpus weight is the language model used. The most common lan-guage model is the Inverse Document Fre-quency (IDF), which considers the distribution of terms between...

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 ... small set of finitely vary- ing parameters. These principles are simply properties of trees. In terms of models, one can un- derstand GB to define a universal language the set of all analyses...

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 ... whole document or a sentence, is subjectiveor objective, i.e. contains an expression of opin-ion, and detecting the overall polarity of the text,i.e. positive or negative.Most of the work in sentiment ... 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....

Tài liệu Báo cáo khoa học: "A Comparison of Alternative Parse Tree Paths for Labeling Semantic Roles" ppt

... representations of sentences, where predicates correspond to single word triggers in the surface form of the sentence (typically verb lemmas), and arguments can be identified as substrings of the sentence. ... appropropriate constituents in a parse tree of a sentence. Each of these efforts employed the use of parse tree paths as predictive features, encoding the series of up and down transitions through ... em-ploying each of these parsing alternatives? Each of these four questions is addressed in the four subsequent sections of this paper, fol-lowed by a discussion of the implications of our findings...

Tài liệu Báo cáo khoa học: "Automatic Evaluation of Sentence-Level Fluency Andrew Mutton∗" pdf

... assessment of sentence naturalness. In the case of evaluating a single sys-tem, using the language model that generated the sentence will only conﬁrm that the sentence doesﬁt the language model; ... ultrasummarisa-tion model of Witbrock and Mittal (1999) consists of a content model, modelling the probability that aword in the source text will be in the summary, anda language model. Evaluation ... training datathe 1000 instances of sentences of sequence length24 (i.e. sentences extracted from the corpus) andas negative training data the 1000 sentences of se-quence length 1. We call...

Tài liệu Báo cáo khoa học: "A SNAPSHOT OF KDS A KNOWLEDGE" pot

... representation of knowledge to be delivered. We have addressed a number of Issues not previously encountered In the generation of Natural Language st the multi -sentence level, vlz: ordering among sentences ... gcel-pursuin~ planner, end the use of dynamic models of speaker and hearer to shape the text to the task at hand. STATEMENT OF THE PROBLEM The task of KDS is to generate English text ... cognitive state of the reader. 3. To achieve the desired state of the reader requires more than a single sentence. R ESULTS This is not the forum for a extensive analysis of our results;...

Tài liệu Báo cáo khoa học: "A GENERALIZATION OF THE OFFLINE PARSABLE GRAMMARS" doc

... f'mite set of symbols, so there is only a finite number of strings of given length L, and it has a finite number of rules, so there is only a finite number of possible parse trees of given depth ... Let C a be the set of pairs [A,B] such that A B by a tree of depth n. Clearly C t is the set of pairs [A,B] such that (A ) B) is a rule of G. Also, Cn+ 1 is the set of pairs [A,C] such that ... representation for the set of pairs of ground terms [A,B] such that (A > B) is a rule in the ground grammar of G'. Clearly this representation is just the set of pairs of terms [C,D] such...

Tài liệu Báo cáo khoa học: "A MODEL FOR PREFERENCE" ppt

... problem of choosing the best solution(s) from a set of interpretations of the same object (in our case a segment of text). A notion of preference is stated, based on pairwise comparisons of complete ... 'sentences with a main verb are better than sentences without one'). - On the basis of a set of such statements it should be possible to establish a partial order over the set of ... phenomenon. We see two types of solutions to this problem, each of them applicable to specific classes of cases: i Spurious results can be eliminated on the basis of their own individual pro-...

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