Báo cáo khoa học: "Time Course Study of Cytokine mRNA Expression in LPS-Stimulated Porcine Alveolar Macrophages" pot

Báo cáo khoa học: "A Comparative Study of Parameter Estimation Methods for Statistical Natural Language Processing" potx

... training example. Second, we used the last 4K sentences of the training data to select the weight of the regularizers and to determine when to stop perceptron training. We compared three of ... Speech and Audio Processing, 8(2): 37-50. Collins, M. 2000. Discriminative re-ranking for natural language parsing. In ICML, 175-182. Collins, M. 2002. Discriminative training methods for hid-den ... the decisions of local linear models via a dynamic program. In the CMM, the local linear models are trained independently, while in the CRF model, the local models are trained jointly. We call...

Tài liệu Báo cáo khoa học: "An Empirical Study of Information Synthesis Tasks" doc

... empirical study of the In- formation Synthesis” task, defined as the process of (given a complex information need) extracting, or-ganizing and inter-relating the pieces of informationcontained in ... onlythe first step towards fulfilling an information need.The next steps consist of extracting, organizing andrelating the relevant pieces of information, in or-der to obtain a comprehensive, non redundant ... kind of topic-oriented, informative multi-document sum-marization, where the goal is to produce a singletext as a compressed version of a set of documentswith a minimum loss of relevant information....

Báo cáo khoa học: "An Empirical Study of Chinese Chunking" docx

... empirical study of Chinese chunking. We compared the performance of four models, SVMs, CRFs, MBL, and TBL.We also investigated the effects of using differentsizes of training data. In order ... generated different sizes of training sets, including 1%, 2%, 5%, 10%, 20%,50%, and 100% of the total training data. In our experiments, we used all the default pa-rameter settings of the packages. ... 110Num of Sentences 9,878 5,290Num of Words 238,906 165,862Num of Phrases 141,426 101,449Table 2: Information of the CTB4 Corpus3 Chinese Chunking3.1 Models for Chinese Chunking In this...

Báo cáo khoa học: "An Empirical Study of the Influence of Argument Conciseness on Argument Effectiveness" docx

... tree in the real estate domain). The arcs of the tree are weighted to represent the importance of the value of an objective in contributing to the value of its parent in the tree (e.g., in ... degree of conciseness of the argument (by varying k as explained in Section 2.3), and what microplanning tasks the generator performs. In the experiment described here, we focused on studying ... set of component value functions, one for each primitive attribute of the entity. A value tree is a decomposition of the value of an entity into a hierarchy of aspects of the entity2, in...

Báo cáo khoa học: A kinetic study of sugarcane sucrose synthase pdf

... hanges in kinetic parameters of enzymesinvolved in sucrose metabolism are capable of h aving l argeeffects on metabolite concentrations. According to thismodel, expression of multiple enzyme isoforms ... Mixed inhibition shows the lines intersecting totheleftofthey-axis i n both plots. The inhibition patternsindicate an ordered m echanism with UDP binding ﬁrs t andUDP-glucose dissociating last. ... werethen incorporated in the model of sucrose accumulation, toinvestigate the effect of changes in SuSy kinetic parameterson the output variables.ModellingKinetic parameters obtained experimentally...

Báo cáo khoa học: "an experimental study of ambiguity and context" ppt

... in two words on each side of the key word, so as to simplify the appraisal of the effect of ver- bal setting. Only words of sufficiently general use to be included in the Fifth Edition of ... multiple meanings of key terms. Special importance attaches to ambiguity as a result of the growing interest in the possibili- ties of mass translation: rapid and routine translation of large ... translators attained a reduction of 45.5%. In the sentential context, the reduction of the accurate group was about three times as great as that of the inaccurate group. In terms of these two...

Báo cáo khoa học: "A Pilot Study of Opinion Summarization in Conversations" docx

... 2005.Extractive summarization of meeting recordings. In Proceedings of EUROSPEECH.Vincent Ng, Sajib Dasgupta, and S.M.Niaz Ariﬁn. 2006.Examining the role of linguistic knowledge sources in the automatic ... Summarizing contrastive viewpoints in opinion-ated text. In Proceedings of EMNLP.Ana-Maria Popescu and Oren Etzioni. 2005. Extractingproduct features and opinions from reviews. In Pro-ceedings of ... ut-terance s contains opinion. To obtain this,we trained a maximum entropy classiﬁer witha bag -of- words model using a combination of data sets from several domains, includingmovie data (Pang...

Báo cáo khoa học: "A Comparative Study of Hypothesis Alignment and its Improvement for Machine Translation System Combination" pot

... using ITG-based Alignments. In Proceeding of ACL-HLT 2008, pp. 81–84. O. Kraif, B. Chen. 2004. Combining clues for lexical level aligning using the Null hypothesis approach. In: Proceedings ... System Combination for Machine Translation. In Proceed-ings of the 2007 Joint Conference on Empirical Methods in Natural Language Processing and 947tem combination research. In this paper, ... Incremental Hypothesis Alignment for Building Confusion Networks with Application to Machine Translation System Combination, In Pro-ceeding of the Third ACL Workshop on Statistical Machine...

Báo cáo khoa học: "An Empirical Study of Active Learning with Support Vector Machines for Japanese Word Segmentation" pptx

... simple. Since we cannotget good performance when using a large pool at thebeginning of training, we enlarge gradually a pool of unlabeled examples.The outline of Two Pool Algorithm is shown in Figure ... andisthe number of examples including both labeled ex-amples in the training set and unlabeled ones in theprimary pool. Themust be less than the percentage of support vectors of a training set3. ... accuracy curve varies de-pending on the size of a pool. Surprisingly, the per-formance of a larger pool is worse than that of asmaller pool in the early stage of training5. One rea-son for this...

Báo cáo khoa học: "A Comparative Study of Reinforcement Learning Techniques on Dialogue Management" pdf

... types of DS that serve variousaims, from hotel and ﬂight booking to provid-ing information or keeping company and forminglong term relationships with the users. Other in- teresting types of DS ... changes in the environment. In general, RL algorithms fall in two cate-gories, planning and learning algorithms. Plan-ning or model-based algorithms use training ex-amples from previous interactions ... several iterationsusing simulated triplets (x, a, r). In the presence of changes this results in obsolete informationbeing reused again and again until sufﬁcient realinteractions with the...

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