Tài liệu Báo cáo khoa học: "Learning Sub-Word Units for Open Vocabulary Speech Recognition" doc

Tài liệu Báo cáo khoa học: "Learning Word Vectors for Sentiment Analysis" ppt

... skisthe sentiment label for document dk, we wish tomaximize the probability of document labels giventhe documents. We assume documents in the collec-tion and words within a document are i.i.d. ... problems for different documents are independent, we cansolve them on separate machines in parallel. Thisfacilitates scaling the model to document collectionswith hundreds of thousands of documents.4 ... sentiment information. In ourexperiments, we show how the model can leveragedocument-level sentiment annotations of a sort thatare abundant online in the form of consumer reviews for movies,...

Tài liệu Báo cáo khoa học: "A Gibbs Sampler for Phrasal Synchronous Grammar Induction" docx

... that this model per-forms well on languages for which the monotonebias of existing alignment and heuristic phraseextraction approaches fail. These results open theway for the development of ... grammar formalismspermitting polynomial time inference (Wu, 1997;783either φPzi for phrase pairs or φnull for single lan-guage phrases. We choose Dirichlet process (DP)priors for these ... hasa tendency to discourage long translation units. 4.2 A Gibbs sampler for derivationsMarkov chain Monte Carlo sampling allows us toperform inference for the model described in 4.1without restricting...

Tài liệu Báo cáo khoa học: "Mining Wiki Resources for Multilingual Named Entity Recognition" pdf

... language is available for download (download.wikimedia.org) in a text format suitable for inclusion in a database. For the remainder of this paper, we refer to this format. 14.3 Ukrainian ... language article, if available, for additional information. • A second pass checks for multi-word phrases that exist as titles of Wikipedia articles. • We look for certain types of person and ... process, though of value in languages for which resources exist, is particularly useful for less commonly taught languages. We show how the Wikipedia format can be used to identify possible...

Tài liệu Báo cáo khoa học: "An expressive formalism for describing tree-based grammars" docx

... tree description and/or of semantic formu-las. The XMG formalism furthermore supports thesharing of identiﬁers across dimension hence al-lowing for a straightforward encoding of the syn-tax/semantics ... pieces of informa-tion (fragments), and (ii) the combination of theseto represent alternative syntactic structures.Describing syntax In a tree-based metagram-mar, the basic informational units ... Crabb´e and D. Duchier. 2004. Metagrammar redux.In CSLP 2004, Copenhagen.B. Crabb´e. 2005. Repr´esentation informatique degrammaires fortement lexicalis´ees : Application`ala grammaire d’arbres...

Tài liệu Báo cáo khoa học: "Contrastive accent in a data-to-speech system" doc

... alternative solution Fortunately, in data-to -speech systems like GoalGet- ter, the input of which is formed by typed and struc- tured data, a simple principle can be used for de- termining contrast. ... mentioned for the second time and therefore regarded as 'given'. However, this lack of accent creates the impression that Kluivert scored for Ajax too, whereas in fact he scored for the ... type of data structure they express similar information and should therefore be regarded as potentially contrastive, even if their sur- face forms are different. Pitch accent should be as-...

Tài liệu Báo cáo khoa học: "Learning to Translate with Multiple Objectives" doc

... baselines, for any setting of combi-nation weights. Further we observe that multi-objective approaches can be helpful for optimiz-ing difﬁcult-to-tune metrics; this is beneﬁcial for quickly ... KDD.P. Koehn et al. 2007. Moses: open source toolkit for statistical machine translation. In ACL.A. Lavie and A. Agarwal. 2007. METEOR: An auto-matic metric for mt evaluation with high levels ... M(h∗)): remove h from L; seth∗= h7: end for 8: Add h∗to Frontier Set F9: for each h in L do10: if (M(h∗)  M(h)): remove h from L11: end for 12: end while13: Return Ftered are necessarily...

Tài liệu Báo cáo khoa học: "Learning Syntactic Verb Frames Using Graphical Models" doc

... that for each verb, ithas an accurate distribution over that inventory. Wetherefore compare the lexicons based on their per-formance on a task that a good SCF lexicon shouldbe useful for: ... methods for building data-driven SCF lexiconstypically rely on parsed input (see section 2). How-ever, the treebanks necessary for training a high-accuracy parsing model are expensive to build for new ... surface framesto the underlying predicate-argument structure. In-formation about verb subcategorization is useful for tasks like information extraction (Cohen and Hunter,2006; Rupp et al., 2010),...

Tài liệu Báo cáo khoa học: "Learning to Find Translations and Transliterations on the Web" doc

... translations for over 50% of the cases, and at least partially correct almost 90% of the cases. 5 Conclusion and Future work We have presented a new method for finding translations on the Web for ... References G. W. Bian, H. H. Chen. Cross-language information access to multilingual collections on the internet. 2000. Journal of American Society for Information Science & Technology (JASIST), ... unknown queries with web corpora for cross-language information retrieval. In Proceedings of the 27th ACM International Conference on Research and Development in Information Retrieval, pp.146-153,...

Tài liệu Báo cáo khoa học: "Learning the Latent Semantics of a Concept from its Deﬁnition" pptx

... = 0.05. We run WMF on WN+Wik for 30 iterations, and LDA for 2000 iterations. For 3It should be noted that this renders LDA a very challengingbaseline to outperform.142Proceedings of the 50th ... deﬁni-tions are typically too short/sparse for latent vari-able models to learn accurate semantics, since thesemodels are designed for long documents. For exam-ple, topic models such as LDA (Blei ... greatperformance of jcn on noun-noun and verb-verbpairs. Although wmfvec does much better than elesk,using wmfvec solely is sometimes outperformed byjcn+elesk on nouns and verbs. Therefore to...

Tài liệu Báo cáo khoa học: "Learning to Follow Navigational Directions" pdf

... actions getcredit for visiting the great rock after the indiancountry. Action a1 also gets credit for passing thegreat rock on the correct side.4 Reinforcement Learning FormulationWe frame ... performance of thedifferent algorithms. Both SARSA and the policygradient method outperform the baseline, but stillfall signiﬁcantly short of expert performance. Thebaseline policy performs ... HCRC map task corpus. Language and Speech, 34, pages 351–366.S.R.K. Branavan, Harr Chen, Luke Zettlemoyer, andRegina Barzilay. 2009. Reinforcement learning for mapping instructions to actions....

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