a comparison of evaluation metrics for document filtering
Báo cáo khoa học: "A Comparison of Event Models for Naive Bayes Anti-Spam E-Mail Filtering" potx
... e-mail: A comparison of a Naive Bayesian and a memory-based approach.In H. Zaragoza, P. Gallinari, and M. Rajman, edi-tors, Proc. Workshop on Machine Learning and Tex-tual Infbrmation Access, ... classifye-mail. In Papers from the AAAI Spring Symposiumon Machine Learning in Information Access, pages18-25, Stanford, CA. AAAI Press.Thomas M. Cover and Joy A. Thomas. 1991. Elements of InfOrmation ... models for Naive Bayes text clas-sification. In Proc. AAAI-98 Workshop on Learning for Text Categorization, pages 41-48. AAAI Press.Dunja Mladeni6 and Marko Grobelnik. 1999. Featureselection for...
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A Comparison of Event Models for Naive Bayes Text Classi cation potx
... the task of text classification in a Bayesianlearning framework. This approach assumes that thetext data was generated by a parametric model, anduses training data to calculate Bayes-optimal ... calculate Bayes-optimal estimates for these parameters from a set of labeled training data.Here, the estimate of the probability of word wtin classcjis:2Many previous formalizations of ... |s=1|D|i=1NisP(cj|di).(6)The class prior parameters are calculated as beforeaccordingtoEquation4.ClassificationGiven estimates of these parameters calculated from thetraining documents, classification can be performed...
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Báo cáo khoa học: "A Comparison of Chinese Parsers for Stanford Dependencies" ppt
... LearningResearch, 9:1871–1874, June.Jan Hajiˇc, Massimiliano Ciaramita, Richard Johansson,Daisuke Kawahara, Maria Ant`onia Mart´ı, Llu´ıs M`arquez,Adam Meyers, Joakim Nivre, Sebastian Pad´o, ... dependency parsers).3 ResultsTable 3 tabulates efficiency and performance for allparsers; UAS and LAS are unlabeled and labeled at-tachment scores, respectively — the standard crite-ria for evaluating ... reviewers, for valuable comments.Supported in part by the National Natural Science Founda-tion of China (NSFC) via grant 61133012, the National “863”Major Project grant 2011AA0 1A2 07, and the National...
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Báo cáo khoa học: "A Class of Submodular Functions for Document Summarization" pot
... 1.3.3 Automatic summarization evaluation Automatic evaluation of summary quality is impor-tant for the research of document summarization asit avoids the labor-intensive and potentially inconsis-tent ... sum-marization (2005–2007). As ROUGE (Lin, 2004)has been of cially adopted for DUC evaluationssince 2004, we also take it as our main evaluation criterion. We evaluated our approaches on DUCdata ... constant-factor approximationguarantee does not apply in this case.When scoring a summary at the sub-sentencelevel, submodularity naturally arises. Concept-basedsummarization (Filatova and Hatzivassiloglou,...
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báo cáo hóa học:" A comparison of classification methods for predicting Chronic Fatigue Syndrome based on genetic data" potx
... now adopted AUC for evaluating predictive ability of classifiers owing to the factthat AUC is a better performance metric than accuracy[31]. In this study, AUC was used as a value to comparethe ... BioMed CentralPage 1 of 8(page number not for citation purposes)Journal of Translational MedicineOpen AccessResearch A comparison of classification methods for predicting Chronic Fatigue Syndrome ... as testing data and different nine-tenths of the data as training data. Finally, the average estimate overall runs was reported by running the above regular 10-foldcross-validation for 100 times...
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A comparison of real and simulated designs for vibratory parts feeding
... Seehttp://www.research.digital.com/SRC/juno-2.[10]JayaramanKrishnasamy, MarkJ.Jakiela, andDanielE.Whit-ney. Mechanics of vibration-assisted entrapment with appli-cation to design. In International Conference ... February 1971.[15]Balas K. Natarajan. Some paradigms for the automated de-sign of parts feeders. International Journal of Robotics Re-search, 8(6):98–109, December 1989. Also appeared in ... takingthe Cartesian product over all the parameter values. It alsoallows us to specify equivalence classes of stable states, andit then automatically categorizes the state (and hence, theequivalence...
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Tài liệu Báo cáo khoa học: "A Comparison of Alternative Parse Tree Paths for Labeling Semantic Roles" ppt
... International Conference on Language Resources and Evaluation, Granada, Spain. Marcus, Mitchell P., Beatrice Santorini and Mary Ann Marcinkiewicz. 1993. Building a Large Annotated Corpus of ... training data is available. 6 Discussion Annotated corpora of linguistic phenomena en-able many new natural language processing ap-plications and provide new means for tackling difficult research ... dependency parser. 1 Introduction A persistent goal of natural language processing research has been the automated transformation of natural language texts into representations that unambiguously...
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Báo cáo khoa học: "A Comparison of Document, Sentence, and Term Event Spaces" potx
... References Lada A. Adamic 2000 Zipf, Power-laws, and Pareto - a ranking tutorial. [Available from http://www.parc.xerox.com/istl/groups/iea/papers/ranking/ranking.html] Ricardo Baeza-Yates, and Berthier ... (ITF). A direct comparison reveals that all language models are highly correlated; however, the average ISF and ITF values are 5.5 and 10.4 higher than IDF. All language models appeared to ... 051015123456789101112131415161718Global IDFAverage Local IDFACHRE4ANCHAMBICHAWBIPRETBOMAF6CGDEFUCMATEXESTHAGIECREDINOCAJJACSATJAFCAUJCCHFFJCISD8JMCMARJNPRDFJOCEAHJPCAFHJPCBFKJPROBSMAMOBXMPOHBPNALEFDOPRDFKORLEF7...
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Báo cáo khoa học: Systems biology: model based evaluation and comparison of potential explanations for given biological data pot
... subdivided?Should a core prediction be formulated as a rejection of a subexplanation?variations of each other? Are there acceptable explanations that can be considered as trivial and presentation of resultsAre ... model (‘Refor-mulation of a hypothesis into a mathematical model’).This is the step that allows for a systematic, quantita-tive, and automatic analysis of many of the propertiesthat are implied ... problem of evaluat-ing and comparing two or several explanations for a given set of data and prior knowledge, so as to identifythe best available explanations. We have reviewedmethods that evaluate...
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Báo cáo khoa học: "A Comparison of Loopy Belief Propagation and Dual Decomposition for Integrated CCG Supertagging and Parsing" potx
... empirical comparison of BP and DD also com-plements the theoretically-oriented comparison of marginal- and margin-based variational approxima-tions for parsing described by Martins et al. (2010).We ... in a previously circulated draft of this paper, for two reasons: we evaluate only on sentences for which a parsewas returned instead of all parses, to enable direct comparison with Clark and ... features of the supertagger are all Markov features on adjacentsupertags, the change has serious implications for search. If we think of the supertagger as defining a weighted regular language...
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Báo cáo khoa học: "A Comparison of Head Transducers and Transfer for a Limited Domain Translation Application" pptx
... having iden- tical sublanguage domain and test data, and using similar automata for analysis in the transfer system and transduction in the transducer system. Another justification is that ... particular type of fi- nite state automata associated with each word in the language. A relational head acceptor writes (or accepts) a pair of symbol sequences, a left sequence and a right sequence. ... above are averages over the same 200 test utterances used in the accu- racy evaluation. These timings are for an implemen- tation of the search algorithms in Lisp on a Silicon Graphics machine...
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a comparison of neural network architectures for
... is based on Shannon’s entropy. It is a statistical measurement of the capability of a feature to separate digit classes. If the information measure of a feature is high, it indicates that the ... for the use of neural network learning techniques for this type of application and data set, and insight about the appropriate design, use, and parameterization of the network to achieve acceptable ... between a feature’s template and the input image. A value of 0 indicates that a feature template did not match the digit image; a value of 1 indicates a complete match; and values in between these...
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báo cáo hóa học:" A comparison of two headless compression screws for operative treatment of scaphoid fractures" doc
... 90(1):66-71.15. Dias JJ, Dhukaram V, Abhinav A, Bhowal B, Wildin CJ:Clinical andradiologicaloutcome of cast immobilization versus surgical treatment of acute scaphoid fractures at a mean follow-up of 93 ... systemmay relate to the thread pattern. The Acutrak 2 is a fully threaded design that generates a large amount of thread-to-bone contact area. In comparison, the Synthesscrew has fewer threads, ... idea for the study and was responsible for revision of manuscript. Thesecond author on the paper, JA, collected and analyzed the data anddrafted the original manuscript. He is also the contact...
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báo cáo hóa học:" A comparison of two headless compression screws for operative treatment of scaphoid fractures" pdf
... 90(1):66-71.15. Dias JJ, Dhukaram V, Abhinav A, Bhowal B, Wildin CJ:Clinical andradiologicaloutcome of cast immobilization versus surgical treatment of acute scaphoid fractures at a mean follow-up of 93 ... greater final compression than the Synthes systemmay relate to the thread pattern. The Acutrak 2 is a fully threaded design that generates a large amount of thread-to-bone contact area. In comparison, ... idea for the study and was responsible for revision of manuscript. Thesecond author on the paper, JA, collected and analyzed the data anddrafted the original manuscript. He is also the contact...
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báo cáo hóa học:" Do visual analogue scale (VAS) derived standard gamble (SG) utilities agree with Health Utilities Index utilities? A comparison of patient and community preferences for health status in rheumatoid arthritis patients" pptx
... Epidemiology and Evaluation, Vancouver Coastal Health Research Institute, Vancouver, BC, CanadaEmail: Amir Adel Rashidi - amiradel@interchange.ubc.ca; Aslam H Anis - aslam.anis@ubc.ca; Carlo A Marra* ... Marra*3,4Address: 1Centre for Clinical Epidemiology and Evaluation, Faculty of Pharmaceutical Sciences, University of British Columbia, Canada, 2MHA Program, Department of Health Care and Epidemiology, ... Health Utilities Index utilities? A comparison of patient and community preferences for health status in rheumatoid arthritis patientsAmir Adel Rashidi1, Aslam H Anis2 and Carlo A Marra*3,4Address:...
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Tìm thêm: hệ việt nam nhật bản và sức hấp dẫn của tiếng nhật tại việt nam khảo sát các chuẩn giảng dạy tiếng nhật từ góc độ lí thuyết và thực tiễn khảo sát chương trình đào tạo của các đơn vị đào tạo tại nhật bản xác định thời lượng học về mặt lí thuyết và thực tế tiến hành xây dựng chương trình đào tạo dành cho đối tượng không chuyên ngữ tại việt nam điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1 khảo sát thực tế giảng dạy tiếng nhật không chuyên ngữ tại việt nam khảo sát các chương trình đào tạo theo những bộ giáo trình tiêu biểu nội dung cụ thể cho từng kĩ năng ở từng cấp độ xác định mức độ đáp ứng về văn hoá và chuyên môn trong ct mở máy động cơ rôto dây quấn các đặc tính của động cơ điện không đồng bộ đặc tuyến hiệu suất h fi p2 đặc tuyến mômen quay m fi p2 đặc tuyến tốc độ rôto n fi p2 đặc tuyến dòng điện stato i1 fi p2 động cơ điện không đồng bộ một pha thông tin liên lạc và các dịch vụ phần 3 giới thiệu nguyên liệu chỉ tiêu chất lượng 9 tr 25