an extensive empirical study of feature selection metrics
Báo cáo khoa học: "An Extensive Empirical Study of Collocation Extraction Methods" ppt
... status quo of an ongoing research study of collocations – an essential linguistic phenomenon hav-ing a wide spectrum of applications inthe field of natural language processing.The core of the work ... J. Panevová, P. Sgall, andB. Vidová-Hladká. 2001. Prague dependency treebank 1.0.Published by LDC, University of Pennsylvania.K. Kita, Y. Kato, T. Omoto, and Y. Yano. 1994. A comparative study ... measures and com-pute an association score for each collocation candi-date extracted from a corpus. The scores indicate achance of a candidate to be a collocation. They canbe used for ranking...
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Tài liệu Báo cáo khoa học: "An Empirical Study of Information Synthesis Tasks" doc
... bet-ter than ROUGE for a relevant class of topics.Section 3 describes these metrics and the experi-mental design to compare them; in Section 4, we an- alyze the outcome of the experiment, and Section ... On theother hand, all baselines improve, and some of them(SentenceSim precision and perplexity) give betterresults than both ROUGE and NICOS. Of course, no reliable conclusion can be obtainedfrom ... Sum-marization, Edmonton, Canada.V. Khandelwal, R. Gupta, and J. Allan. 2001. An Evaluation Corpus for Temporal Summarization.In Proceedings of the First International Confer-ence on Human Language Technology...
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Báo cáo khoa học: "An Empirical Study of Chinese Chunking" docx
... listed as follows:ã WORD: uni-gram and bi-grams of words in an n window.ã POS: uni-gram and bi-grams of POS in an nwindow.ã WORD+POS: Both the features of WORDand POS.where n is a predefined ... UPENN Chinese Treebank-4(CTB4). Wepresented an empirical study of Chinese chunk-ing on this corpus. First, we made an evaluationon the corpus to clarify the performance of state- of- the-art models ... largenumber of observation features as well as differ-ent state sequence based features and other fea-tures we want to add. Tan et al. (Tan et al., 2005)applied CRFs to Chinese chunking and their...
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Báo cáo khoa học: "An Empirical Study of the Influence of Argument Conciseness on Argument Effectiveness" docx
... descriptions of objects and processes from a knowledge base (Lester and Porter March 1997), text summaries of quantitative data (Robin and McKeown 1996), descriptions of plans (Young to appear) and ... autonomous exploration of the set of alternatives and the selection of the preferred alternatives. Let’s examine now how an argument generator can be evaluated in the context of the selection task, ... 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 Figure 1 location is more than twice...
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Crying Wolf: An Empirical Study of SSL Warning E ectiveness pot
... survey/sdata/200701/certca.html.[6] S. Egelman, L. F. Cranor, and J. Hong. You’ve beenwarned: an empirical study of the effectiveness of webbrowser phishing warnings. In Proceeding of the SIGCHIConference on Human Factors ... bank wanted you totake?” responded that it wanted them not to pro-ceed. Only 3 FF2, 2 FF3, and 4 IE7 participantsanswered the same way.4.2.4 Impact of Reading and UnderstandingIn each of ... addition,our study participants were more technically sophis-ticated than the previous study s participants.5.2 Explain the DangerThe FF2, IE7, and our single page warnings take thestandard tactic of...
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Báo cáo khoa học: "An Empirical Study of Active Learning with Support Vector Machines for Japanese Word Segmentation" pptx
... An Empirical Study of Active Learning with Support Vector Machines forJapanese Word SegmentationManabu SassanoFujitsu Laboratories Ltd.4-1-1, Kamikodanaka, Nakahara-ku,Kawasaki ... a kanji character and a hi-ragana character. Of course, there are quite a fewexceptions to this heuristics. For example, someproper nouns are written in mixed hiragana, kanjiand katakana.The ... increment of support vectors isless than half of the average increment.Table 2: Accuracy at Different Labeled Data Sizeswith Random Sampling #of Sen-tences# of Ex-amples #of BinaryFeaturesAccuracy(%)21...
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Báo cáo y học: "Comparative study of control selection in a national population -based case-control study: Estimating risk of smoking on cancer deaths in Chinese men"
... prevalence of smoking between male living spouses of women who died of any cause and those spouses of women who died of some other causes other than smoking related causes. The preva-lence of smoking ... greater for urban males than rural males, both study groups revealed a con-sistent pattern of the effect of smoking on risk of can-cer deaths. TABLE 1. Characteristics of cases and two control ... of death at one time, and use of a single control group for more than one case series can lead to saving of money and time;11-12 (3) all possible confounding factors (known or unknown) and...
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Báo cáo khoa học: "Empirical Study of Predictive Powers of Simple Attachment Schemes for Post-modifier Prepositional Phrases" pptx
... to some semantic subset of an antecedent. There was one additional case in which a subsequent noun phrase was a rephrasing of an antecedent. For the remaining 71 instances, no antecedent could ... infrequently and since one of the major foci of the study was to try to find general means of deciding attachment of PPs, individualization of these PPs was, at first, discounted. In some of the ... participant. Partici- pants of the study were each asked to plan a spe- cific travel agenda of their choice with information obtained solely by typing natural language mes- sages and requests...
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Activity-based costing diusion across organizations: an exploratory empirical analysis of Finnish firms docx
... inside the group of adopting organizations.5.1.2. The analysis of organizati onal determinantsLet us next focus on the organizational deter-minants of adopting organizations instead of theadopter ... sug-gesting that management accounting systems arechanged because of fads and fashions. However,fad and fashion as explanations for diusion of management accounting innovation and changeare not ... Adoption and diusion of an innovation of uncertain prođtability. Jour nal of Economic Theory, 27, 182±193.Johnson, H. T., & Kaplan, R. S. (1987). Relevance lost: the riseand fall of management...
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Graph drawing aesthetics and the comprehension of UML class diagrams: an empirical study pptx
... they weresemantically related. Second, in informal discussions withthe subjects, many of them commented that the grouping of semantically related classes was an important layout feature. Further ... the semantics of the diagram, are more likelyto be effective from a human understanding point of view.AcknowledgementsWe are grateful to the students of the School of ComputerScience and Electrical ... University of Queensland who willingly took part in the experiment,and to the Australian Research Council, which fundedthis research. Ethical clearance for this study was grantedby The University of...
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accounting ethics and its important role for reduction of accounting fraud an empirical study in hanoi
... governance and lack of transparency in our system. This reason can be considered causes of the financial crisis, and the subsequent events of corporate collapses and accounting fraud. An organization ... philosophy, which is the study of values and customs of a person or group and covers the analysis and employment of concepts such as right and wrong, good and evil and do's and don'ts (Ghazala ... other. And professional cannot use information for personal advantage Professional Behavior: A professional accountant should follow the relevant laws and regulations and should avoid any action...
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