Báo cáo khoa học: "Hierarchical Reinforcement Learning and Hidden Markov Models for Task-Oriented Natural Language Generation" ppt

... Association for Computational Linguistics:shortpapers, pages 654–659, Portland, Oregon, June 19-24, 2011. c 2011 Association for Computational Linguistics Hierarchical Reinforcement Learning and Hidden ... consis- tency (Halliday and Hasan, 1976), and variation, which influence people’s assessment of discourse (Levelt and Kelter, 1982) and generated output (Belz and Reit...

Ngày tải lên: 07/03/2014, 22:20

... MK–EN, and Pr(b|e) and Pr(e|b) for EN–BG, where m, e, and b stand for a Macedonian, an English, and a Bulgarian word. Then, following (Callison-Burch et al., 2006; Wu and Wang, 2007; Utiyama and ... and +1.23 BLEU points over (c2). 4 5 Conclusion and Future Work We have explored several combinations of character- and word-level translation models for translating betw...

Ngày tải lên: 23/03/2014, 14:20

... selection task and a language model adaptation task. Then we apply the best of these estimators to two additional tasks involving conditional sequence models: a CMM for POS tagging and a CRF for Chinese ... best performing estimators in all of the tasks, and AP achieves almost as well and requires much less training time. L 1 (Lasso) regularization also per- forms well...

Ngày tải lên: 08/03/2014, 02:21

... State Transducers Approximating Hidden Markov Models Andrd Kempe Rank Xerox Research Centre - Grenoble Laboratory 6, chemin de Maupertuis - 38240 Meylan - France andre, kempe©grenoble, rxrc. ... tags tn and t12, c2 with the three tags t21, t22 and t23 , and c3 with one tag t31. Different classes may contain the same tag, e.g. t12 and t2s may refer to the same tag. F...

Ngày tải lên: 31/03/2014, 21:20

... i) where g O and g ′ O are feature vectors defined for Opinion extraction, g P and g ′ P are feature vectors defined for Polarity extraction, and g S and g ′ S are feature vectors defined for Strength ... of opinion (e.g. Kim and Hovy (2005), Popescu and Etzioni (2005), Breck et al. (2007)), determining their polarity (e.g. Hu and Liu (2004), Kim and Hovy (2004), Wilson et...

Ngày tải lên: 17/03/2014, 00:20

... hierarchical models. There has not been much work on multi-task learning in the NLP com- munity; Daum´e III (2007) and Finkel and Man- ning (2009a) both build models for multi-domain learning, a ... CRF-CFG and a PCFG is analogous to the relationship between a linear- chain CRF and a hidden Markov model (HMM) for modeling sequence data. Let t be a com- plete parse tree...

Ngày tải lên: 30/03/2014, 21:20

... anno- tated for Student and Tutor Moves (see Tables 1 and 2) which can be viewed as Dialogue Acts (Forbes-Riley et al., 2005). Note that tutor and stu- dent turns can consist of multiple utterances and can ... dialogues were authored beforehand by physics experts. For ev- ery turn there is a list of possible correct, incor- rect and partially correct answers the student can make...

Ngày tải lên: 24/03/2014, 03:20

... Figure 2. Both for 10 and 20 frames, the results are better for 50 than for 20 clusters, with small differences between 10 and 20 frames. The results vary between -11.850 and -10.620 (for 5-50 iterations), ... regarding the required arguments. 497 and Light (1999) and turn WordNet into a Hidden Markov model (HMM). We create a new pseudo- concept for each WordNet noun a...

Ngày tải lên: 08/03/2014, 01:20

... accelerates wound angiogenesis and wound healing in mouse and rat models. FASEB J 19, 211–221. 30 Casu B, Vlodavsky I & Sanderson RD (2008) Non- anticoagulant heparins and inhibition of cancer. ... health and disease: new concepts for heparanase function in tumor progression and metastasis Uri Barash 1 , Victoria Cohen-Kaplan 1 , Ilana Dowek 2 , Ralph D. Sanderson 3 , Neta Il...

Ngày tải lên: 15/03/2014, 23:20

... pigmentation is a prerequisite for these studies, and therefore we have analyzed in detail the origin of red fluorescent coloration of Faviina and Meandriina corals. Results and Discussion GFP-like proteins ... nm, and consequently, its Stokes shift of 31 nm is more than twice as large as for the other photoconvertible proteins; and (c) its excitation spectrum is rather broad, a...

Ngày tải lên: 16/03/2014, 11:20