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. c 2006 Association for Computational Linguistics Semi-Supervised Conditional Random Fields for Improved Sequence Segmentation ... not practical for large data sets. In this paper, wepropose a new semi-supervised training method for conditional random fields (CRFs) that incorporates both...

Ngày tải lên: 17/03/2014, 04:20

... used before for this task, namely information content (IC) (Pan and McKeown, 1999) and mutual information (Pan and Hirschberg, 2001). However, the measures we have used encompass similar information. ... all possi- ble label sequences of the observation sequence x i and can be computed using the forward backward algorithm. Given an observation sequence x, the best label sequenc...

Ngày tải lên: 08/03/2014, 04:22

... evaluation measure for these tasks, namely, segmentation F-score. Our ex- periments show that our method performs better 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. c 2006 Association for Computational Linguistics Training Conditional Random Fiel...

Ngày tải lên: 17/03/2014, 04:20

... 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 the English tweets tagged in Stage 1. A third anno- tator read the annotation...

Ngày tải lên: 20/02/2014, 04:20

... Orange 2.0b for Mac OS X (Python and C++). In particular, we made use of the implementations of Euclidean distance and random sampling in their package. Our code is available at: cst.dk/anders/sccn/ 5 ... as suggested, for example, in Alpay- din (1997), iterating only once over data rather than waiting for convergence. This will give us a smaller set of labeled data points, and...

Ngày tải lên: 07/03/2014, 22:20

... 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, most notably gastric and liver cancers. ... involving conform- ational transitions coupled to the binding process. S1.2-2 Amplification and control of B cell antigen receptor signaling M. Reth and Y. Kulathu Institute for Bi...

Ngày tải lên: 19/02/2014, 07:20

... 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 learni...

Ngày tải lên: 20/02/2014, 09:20

... modalities (speech, typing and pointing) and provides mul- timodal responses in the form of graphical, textual and vocal feedback. The dialogue manager contains only linguistic knowledge and interaction ... in the form of sets of semantic pairs. A semantic pair (SP) is a qualified piece of information that the dia- 50 logue system is able to understand. For exam- ple, a system could...

Ngày tải lên: 20/02/2014, 12:20

... above, and each Jaso has its own correction candidates. For example, Jaso ‘ㅇ’ at 4 th column has its candidates ‘ㅎ’, ‘ㄴ’ and ‘X’. And two jaso’s ‘Xㅋ’ at 13 th and 14 th 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....

Ngày tải lên: 20/02/2014, 12:20

... (MGA; E.C. 3.2.1.20 and 3.2.1.3) maltase glucoamylase and sucrase isomaltase (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 type 2 diabetes mellitus: the STOP-NIDDM randomised trial. Lancet 359, 2072–2077. 7 Scheen AJ (2003) Is there a role for alpha-gluc...

Ngày tải lên: 07/03/2014, 12:20