Báo cáo khoa học: "Semi-Supervised Conditional Random Fields for Improved Sequence Segmentation and Labeling" pdf
Báo cáo khoa học: "Semi-Supervised Conditional Random Fields for Improved Sequence Segmentation and Labeling" pdf
... Linguistics and 44th Annual Meeting of the ACL, pages 209–216,Sydney, July 2006.c2006 Association for Computational LinguisticsSemi-Supervised Conditional Random Fields for Improved Sequence Segmentation ... not practical for large data sets.In this paper, wepropose a new semi-supervisedtraining method for conditional random fields(CRFs) that incorporates both labeled and unla-beled sequence data ... semi-supervised trainingprocedure for conditional random fields(CRFs) that can be used to train sequence segmentors and labelers from a combina-tion of labeled and unlabeled training data.Our approach...
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Báo cáo khoa học: "Using Conditional Random Fields to Predict Pitch Accents in Conversational Speech" pptx
... used before for this task, namely information content (IC) (Pan and McKeown, 1999) and mutual information (Pan and Hirschberg, 2001). However, the measures wehave used encompass similar information. ... all possi-ble label sequences of the observation sequence xi and can be computed using the forward backwardalgorithm.Given an observation sequence x, the best label sequence is given by:ˆy ... eachword was coded for probabilistic and contextualinformation, such as word frequency, conditional probabilities, the rate of speech, and the canonicalpronunciation (Fosler-Lussier and Morgan, 1999).The...
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Báo cáo khoa học: "Training Conditional Random Fields with Multivariate Evaluation Measures" potx
... evaluation measure for these tasks,namely, segmentation F-score. Our ex-periments show that our method performsbetter than standard CRF training.1 Introduction Conditional random fields (CRFs) ... Computational Linguistics and 44th Annual Meeting of the ACL, pages 217–224,Sydney, July 2006.c2006 Association for Computational LinguisticsTraining Conditional Random Fields with Multivariate ... insidethe tag ‘X’, and outside any target segment, re-spectively. Therefore, a segment is defined as a sequence of a few outputs.4.2 Segmentation F-score Loss for SSTsThe standard evaluation...
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Tài liệu Báo cáo khoa học: "Part-of-Speech Tagging for Twitter: Annotation, Features, and Experiments" pdf
... user-created content, and a flurry of recent research has aimed to under-stand and exploit these data (Ritter et al., 2010; Shar-ifi et al., 2010; Barbosa and Feng, 2010; Asur and Huberman, 2010; ... tok-enization and tagging guidelines, and for Stage 2,two annotators reviewed and corrected all of theEnglish tweets tagged in Stage 1. A third anno-tator read the annotation guidelines and annotated72 ... −1 and 1 on this scale; these are not shown.N is the token count, Ncapis the capitalized to-ken count, and α and C are the prior probability and its prior weight.7We compute features for membership...
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Báo cáo khoa học: "Semisupervised condensed nearest neighbor for part-of-speech tagging" pot
... Orange 2.0b for Mac OS X (Python and C++).In particular, we made use of the implementationsof Euclidean distance and random sampling in theirpackage. Our code is available at:cst.dk/anders/sccn/5 ... as suggested, for example, in Alpay-din (1997), iterating only once over data rather thanwaiting for convergence. This will give us a smallerset of labeled data points, and therefore classifica-tion ... classifica-tion requires less space and time. Note that whilethe NN rule is stable, and cannot be improved byT = {x1, y1, . . . , xn, yn}, C = ∅ for xi, yi ∈ T doif C(xi)...
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Tài liệu Báo cáo khoa học: 1. Signal Transduction 1.1 Integration of Metabolism and Survival pdf
... certain bacterial (for instance Heli-cobacter pylori) and viral (for instance HBV and HCV) patho-gens are major risk factors for certain types of cancer, mostnotably gastric and liver cancers. ... involving conform-ational transitions coupled to the binding process.S1.2-2Amplification and control of B cell antigenreceptor signalingM. Reth and Y. KulathuInstitute for Biology III and Max-Planck-Institute ... littermates. GLUT4 and caveolin-1 were colocalizedin WT and ArKO mice, but not in ERb–/– and ERa–/–mice.Thus, ERa is necessary for GLUT4 expression while ERb has asuppressive role. Both ERb and ERa...
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Tài liệu Báo cáo khoa học: "Sentiment Vector Space Model for Lyric-based Song Sentiment Classification" pdf
... light-hearted (positive class) and 1,021 assigned heavy-hearted (negative class). We randomly se-lect 2,001 songs (around 75%) for training and the rest for testing. We adopt the standard evaluation criteria ... approaches are dominating, i.e. knowledge-based approach (Kim and Hovy, 2004), information retrieval-based approach (Turney and Littman, 2003) and machine learning approach (Pang et al., 2002), in ... 2008.c2008 Association for Computational LinguisticsSentiment Vector Space Model for Lyric-based Song Sentiment Classification Yunqing Xia Linlin Wang Center for Speech and language Tech....
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Tài liệu Báo cáo khoa học: "Archivus: A multimodal system for multimedia meeting browsing and retrieval" doc
... modalities(speech, typing and pointing) and provides mul-timodal responses in the form of graphical, textual and vocal feedback.The dialogue manager contains only linguisticknowledge and interaction ... in the formof sets of semantic pairs. A semantic pair (SP)is a qualified piece of information that the dia-50logue system is able to understand. For exam-ple, a system could understand semantic ... important for choos-ing the appropriate level of language processing, for instance for the syntactic analysis. Another as-pect is to see the types of actions performed us-ing language. On one hand,...
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Tài liệu Báo cáo khoa học: "A Joint Statistical Model for Simultaneous Word Spacing and Spelling Error Correction for Korean" pdf
... above, and each Jaso has its own correction candidates. For example, Jaso ‘ㅇ’ at 4th column has its candidates ‘ㅎ’, ‘ㄴ’ and ‘X’. And two jaso’s ‘Xㅋ’ at 13th and 14th column has its candidates ... correction candidates. Candidates are increased in number by inserting the blank cha-racters on the created candidates, which cover the spacing error correction candidates. We find the best candidate ... system is for sentences rec-ognized by OCR, and it uses character transition probabilities and POS (part of speech) tag n-gram. However it needs a word dictionary and takes long time for searching...
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Báo cáo khoa học: Inhibition of recombinant human maltase glucoamylase by salacinol and derivatives pdf
... (MGA; E.C.3.2.1.20 and 3.2.1.3) maltase glucoamylase and sucraseisomaltase (SIM; EC 3.2.1.48 and 3.2.1.10), respect-ively, to yield glucose [9]. MGA and SIM have over-lapping and complementary ... & Laakso M (2002) Acarbose for prevention of type2 diabetes mellitus: the STOP-NIDDM randomisedtrial. Lancet 359, 2072–2077.7 Scheen AJ (2003) Is there a role for alpha-glucosidaseinhibitors ... alkylated deoxynojirimy-cin and 1,5-dideoxy-1,5-iminoxylitol analogues: polarside-chain modification, sulfonium and selenonium het-eroatom variants, conformational analysis, and evalua-tion as glycosidase...
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