Báo cáo khoa học: "Planning Reference Choices for Argumentative Texts" ppt

Tài liệu Báo cáo khoa học: "Learning Word Vectors for Sentiment Analysis" ppt

... of the Association for Computational Linguistics, pages 142–150,Portland, Oregon, June 19-24, 2011.c2011 Association for Computational LinguisticsLearning Word Vectors for Sentiment AnalysisAndrew ... Pham, Dan Huang,Andrew Y. Ng, and Christopher PottsStanford UniversityStanford, CA 94305[amaas, rdaly, ptpham, yuze, ang, cgpotts]@stanford.eduAbstractUnsupervised vector-based approaches ... ﬁnd it out-performs several previ-ously introduced methods for sentiment clas-siﬁcation. We also introduce a large datasetof movie reviews to serve as a more robustbenchmark for work in this...

Tài liệu Báo cáo khoa học: "A Pipeline Framework for Dependency Parsing" ppt

... allows that use of future information in ad-dition to past information. The pipeline model nat-urally allows access to all the past information.Algorithm 3 Pseudo code for the look ahead algo-rithm. ... rightmost S action taken before anon-S action happens. Note that it is possible thatthere is a relation between a and b, but we can-not perform R or L now. Therefore, we shouldconsider (a, ... children for each word). Note that State changes when a pre-diction is made and that the features extracted for the action classiﬁer also depend on State.The search algorithm will perform a search...

Tài liệu Báo cáo khoa học: "Head-Driven Parsing for Word Lattices" ppt

... a score, used to rankparse candidates. For parsing of strings, the score for a chart edge is the product of the scores of anychild edges and the score for the creation of the newedge, as given ... quality for ASR. WER is thecount of incorrect words in hypothesisˆW per wordin the true string W. For measurement, we must as-sume prior knowledge of W and the best alignmentof the reference ... error. Thuseven though WER is useful practically, it is formallynot the appropriate measure for the commonly usedlanguage models. Unfortunately, as a practical mea-sure, sentence error rate...

Tài liệu Báo cáo khoa học: "Using Confidence Bands for Parallel Texts Alignment" pptx

... longer afford to waste human time and effortbuilding manually these ever changing and in-complete databases or design language specificapplications to solve this problem. The need for an automatic ... brackets). For average size texts (e.g. the Written Ques-tions), these words account for about 5% of thetotal (about 3k words / text). This number variesaccording to language similarity. For instance,on ... Y-axis intercept (thevalue of y when x is 0), substituting x for thePortuguese word position. For Table 3, the ex-pected word position for the word I at pt wordposition 3877 is 0.9165 × 3877 +...

Báo cáo khoa học: "Exploiting Web Redundancy for Answer Validation" pptx

... disturbing elements. As for morphol-ogy, verbs are expanded with all their tense forms(i.e. present, present continuous, past tense and pastparticiple). Synonyms and morphological forms areadded ... before, AltaVista was used assearch engine.A baseline for the answer validation experimentwas deﬁned by considering how often an answer oc-curs in the top 10 documents among those (1000 for ... its high performance as proof for the difference between our task and classic co-occurrence mining. Another indication for this is thefact that MLHR and PMI performances are compa-rable, however...

Tài liệu Báo cáo khoa học: "PLANNING TEXT FOR ADVISORY DIALOGUES" docx

... attentional information to produce coherent text (McKeown, 1985, McCoy, 1985, Paris, 1988b), omitting intentional informa- tion, or conflating intentional and rhetorical information (Hovy, ... ers. This is necessary for linguis- tic reasons (e.g., to generate the appropriate clausal connectives in multi-sentential responses) and for responding to requests for elabora- tion/clarification. ... there are many different rhetorical strategies for achieving any given intentional goal. For example, the system has several plan opera- tors for achieving the intentional goal of de- scribing...

Tài liệu Báo cáo khoa học: "A COMPUTATIONAL MECHANISM FOR PRONOMINAL REFERENCE" pot

... Association for Computational Linguistics: Proceedings of the Conference, Association for Computational Linguistics, Morristown, NJ, pp. 17-24. 271 A COMPUTATIONAL MECHANISM FOR PRONOMINAL REFERENCE ... mechanism for handling bound anaphora, disjoint reference, and pronominal reference. The algorithm maps over every node in a parse tree in a left-to-right, depth first manner. Forward and ... disjoint reference: bracketing indicates co -reference) . The subject NP in (13) is not a possible antecedent for the reflexive; while the subject NP in (14) need not be disjoint in reference...

Tài liệu Báo cáo khoa học: A facile method for expression and puriﬁcation of the Alzheimer’s disease-associated amyloid b-peptide pdf

... incu-bated for 4 days with each of the peptides (10 lm), andcells were ﬁxed and used for immunocytochemical analyses.ImmunocytochemistryNeurons were ﬁxed in 4% paraformaldehyde for 20 minat ... to transformed Ca2+-competent E. colicells (ER2566) by heat shock. The transformed cells werespread on LB agar plates containing ampicillin(50 mgÆL)1), single colonies were picked for 2 ... performed inpositive reﬂector mode, collecting data from approximately3000 and 5000 single laser shots for MS and MS ⁄ MS anal-yses, respectively.Preparation of aggregate-free monomer for ﬁbrillation...

Tài liệu Báo cáo khoa học: Pathways and products for the metabolism of vitamin D3 by cytochrome P450scc docx

... resulted in the formation of 20,23-di-hydroxyvitamin D3 (RT = 30 min) and trihydroxyvi-tamin D3 (RT = 22 min) (Fig. 4A). A small lag (0–3 min) was seen in the time course for formation oftrihydroxyvitamin ... correlations for 3-CH and 23-CH; (B) expan-sion of proton–proton TOCSY correlations for 3-CH and 23-CH; (C)expansion of proton–carbon HSQC showing groups having correla-tion to 3-CH and 23-CH (for ... being17a,20-dihydroxyvitamin D3. We have therefore iden-tiﬁed this monohydroxyvitamin D3 as 17a-hydroxyvi-tamin D3. This product is only seen for themetabolism of D3, and not for the metabolism of20-hydroxyvitamin...

Tài liệu Báo cáo khoa học: "Translation Model Adaptation for Statistical Machine Translation with Monolingual Topic Information" doc

... context in-formation at the sentence level, we adopt thetopical context information in our method for the following reasons: (1) the topic informa-tion captures the context information beyondthe ... anovel approach for translation model adapta-tion by utilizing in-domain monolingual top-ic information instead of the in-domain bilin-gual corpora, which incorporates the topic in-formation into ... and P (tf in|f) by resorting toformulas (8) and (9).With the adjusted lexical translation probability,we resort to formula (4) to update the lexical weight for the phrase pair (˜f, ˜e).4...

Xem thêm