Báo cáo khoa học: A novel 2D-based approach to the discovery of candidate substrates for the metalloendopeptidase meprin pot
Tài liệu Báo cáo khoa học: "A Fully Bayesian Approach to Unsupervised Part-of-Speech Tagging∗" docx
... Bayesian approach allows us to automatically select values for the hyperparameters by treating them as addi-tional variables in the model. We augment the modelwith priors over the hyperparameters ... weachieve average tagging accuracy of 86.8%. Thisfar surpasses the MLHMM performance of 74.5%,and is closer to the 90.1% accuracy of CRF/CE on the same data set using oracle parameter selection. The ... θ:ˆθ = argmaxθP (w|θ)P (θ). (2) The values of the latent variables are then taken to be those that maximize P (t|w,ˆθ).In contrast, the Bayesian approach we advocate inthis paper seeks to identify...
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Báo cáo khoa học: "A Two-step Approach to Sentence Compression of Spoken Utterances" pdf
... ranked candidate. This is because we try to avoid a very large or small compression ra-tio, and the first candidate is generally a good candidate with reasonable length.• The probability of the ... the word is deleted).• The log likelihood of the candidate sentencebased on the language model.• The absolute difference of the compression ra-tio of the candidate sentence with that of the first ... Two-step Approach to Sentence Compression of Spoken UtterancesDong Wang, Xian Qian, Yang Liu The University of Texas at Dallasdongwang,qx,yangl@hlt.utdallas.eduAbstractThis paper presents a two-step...
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Báo cáo khoa học: "A CLASS-BASED APPROACH TO LEXICAL DISCOVERY" pdf
... Section 3.2 that each WordNet class w in the tables appears as an ab- breviation for {n • A/ 'ln • words(w)}; for example, (intoxicant, [alcohol ]) appears as an abbrevi- ation for {whisky, ... that a member of that class will actually appear as the object of the verb. 1 3.2 Coherent Classes A search among a verb's object nouns requires at most I .A/ " I computations of the ... this paper I propose a generalization of lexical association techniques that is intended to facilitate statistical discovery of facts involving word classes rather than individual words. Although...
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Báo cáo khoa học: A novel 2D-based approach to the discovery of candidate substrates for the metalloendopeptidase meprin pot
... mayspeculate that hmeprin has activity similar to BMP-1 ⁄TLD-like metalloendopeptidases in that it acts as a procollagen C protease as well as an activator of lysyloxidase. Therefore, an important ... PAGE-based image analyses of the second quadrant.Fig. S2. 2D IEF ⁄ SDS ⁄ PAGE-based image analyses of the third quadrant.Fig. S3. 2D IEF ⁄ SDS ⁄ PAGE-based image analyses of the fourth quadrant.This ... protein database (release 48.8) with fixedcarbamidomethyl modification of cysteine residues, vari-able oxidation of methionine and variable deamidation of asparagine and glutamine. Parent and fragment...
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Tài liệu Báo cáo khoa học: "A Ranking-based Approach to Word Reordering for Statistical Machine Translation" doc
... syntacticalfeatures. We evaluated our approach on large-scale Japanese-English and English-Japanesemachine translation tasks, and show that it cansignificantly outperform the baseline phrase-based ... source spans of A 1and A 2arenot mapped to two adjacent spans in ein in-verse order. The above three penalties are added as additionalfeatures into the log-linear model of the phrase-based ... data(auto). We sample a small corpus (575 sentencepairs) and do manual alignment (man-small). Wedenote the automatic alignment for these 575 sen-tences as (auto-small). From Table 3, we can...
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Tài liệu Báo cáo khoa học: "A Feature Based Approach to Leveraging Context for Classifying Newsgroup Style Discussion Segments" pptx
... indicates the state of a simple finite-state automaton that only has two states. The automaton is set to initial state (q0) at the top of a message. It makes a transition to state (q1) when ... vector representation of the span of text and that of each of the spans of text in all parent messages, 74which is a typical shallow measure of semantic similarity. The smallest such distance ... effectiveness of a fea-ture based approach with the use of a state- of -the- art sequential learning technique that has proven successful for tasks such as “email act classification”. Our evaluation...
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Báo cáo khoa học: "A Nonparametric Bayesian Approach to Acoustic Model Discovery" docx
... values of the hyperparameters of our model,where µdand λdare the dthentry of the mean and the diagonal of the inverse covariance matrix of training data.HMM states for each of the four ... Figure 1: An example of the observed data and hiddenvariables of the problem for the word banana. See Sec-tion 3 for a detailed explanation. of the problem and show an example in Fig. 1. In the next ... from the training data directly.Instead of segmenting utterances, the authors of (Varadarajan et al., 2008) trained a single stateHMM using all data at first, and then iterativelysplit the HMM...
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Báo cáo khoa học: "A Syntax-Free Approach to Japanese Sentence Compression" potx
... sentence.In Japanese, the main subject of a sentenceusually appears at the beginning of the sentence(BOS) and the main verb phrase almost alwaysappears at the end of the sentence (EOS). Thesewords ... Proceedings of the 47th Annual Meeting of the ACL and the 4th IJCNLP of the AFNLP, pages 826–833,Suntec, Singapore, 2-7 August 2009.c2009 ACL and AFNLP A Syntax-Free Approach to Japanese Sentence ... trimming approach is the sequence-oriented approach (McDonald,2006; Nomoto, 2007; Clarke and Lapata, 2006;Hori and Furui, 2003). It treats a sentence as a se-quence of words and structural information,...
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Báo cáo khoa học: "A Noisy-Channel Approach to Question Answering" docx
... previous participations at TREC. As the learner, the answer-identifier/ranker module is also publicly available – the GIZA package can be configured to automatically compute the probability of the ... reformulations with us. In 1867, Secretary of State William H. Seward arranged for the United-States to purchase Alaska for 2 cents per acre. What year did the U.S. buy Alaska? What is the legal ... logically follows from the answer using a set of axioms that are automatically extracted from the WordNet glosses. For example, to prove the logical form of “What is the age of our solar system?”...
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Báo cáo khoa học: "A multi-staged approach to identifying complex events in textual data" ppt
... currently have adequateamounts of hand-marked financial data to trainthese systems. We therefore found it more con-venient to adapt the Alembic name tagger bymanual hill climbing. Because this tagger ... experimental results on their per-formance, as tailored to the financial do-main, and some forward-looking exten-sions to the approach that enables users to specify classifications on the fly.1 ... anno-tated), one for training, and the other for test, onwhich we achieve an accuracy of F=94.We found several characteristics of our finan-cial data to be especially challenging. The first isthe...
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