Báo cáo khoa học: "Combining a Chinese Thesaurus with a Chin

Tài liệu Báo cáo khoa học: "Combining Lexical Semantic Resources with Question & Answer Archives for Translation-Based Answer Finding" doc

... training data are comparatively smaller than WAQ and WAQA, they however yield comparable results. The linear combination of datasets (WAQ+WAQA+LSR Lin ) yields statistically signiﬁcant performance ... statistical word as- sociations which are trained on parallel monolingual corpora. The major drawback of this approach lies in the limited availability of truly parallel monolingual corpor...

Ngày tải lên : 20/02/2014, 07:20

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Báo cáo khoa học: "Combining Speech Retrieval Results with Generalized Additive Models" pptx

... channel was down-sampled to 8kHz and segmented using an available broadcast news segmenter. Because we did not have a pronunciation dictionary which covered the transcribed audio, we automatically ... does assume that they belong to an interval scale. Similarly, the arithmetic mean of MAP assumes AP has interval scale. As Robertson (2006) has pointed out, it is in no sense clear that AP (...

Ngày tải lên : 08/03/2014, 01:20

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Báo cáo khoa học: "Ordering Prenominal Modiﬁers with a Reranking Approach" potx

... Modiﬁers with a Reranking Approach Jenny Liu MIT CSAIL jyliu@csail.mit.edu Aria Haghighi MIT CSAIL me@aria42.com Abstract In this work, we present a novel approach to the generation task of ordering ... We can express this as a real-valued feature: φ(B,H, x)=  count in training data of all n-grams present in x See Table 2 for a summary of our features. Many of the features we use a...

Ngày tải lên : 30/03/2014, 21:20

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Báo cáo khoa học: "Building Deep Dependency Structures with a Wide-Coverage CCG Parser" ppt

... the data. If a word appears at least K times in the data, the supertagger only considers categories that appear in the word’s category set, rather than all lexical categories. The second parsing ... Adjoining Grammar as an alternative to context-free grammar, and here we use another “mildly context-sensitive” for- malism, Combinatory Categorial Grammar (CCG, Steedman (2000)), which arguab...

Ngày tải lên : 31/03/2014, 06:20

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Báo cáo khoa học: "Approximating Context-Free Grammars with a Finite-State Calculus" docx

... grammar. An exam- ples is: S ~ al S S~al A1 S-+anS S-+anAn A~ -+ a~ X A2 + al A2 An -~ al An X-+e A1 -+ a2 Az A1 ~ an A1 A2 -+ a2 X A2 ~ an A2 An -+ a2 A, ~ An ~ an X Here the grammar ... context-free grammars because context-free languages are the smallest class of formal language that can realistically be applied to the analysis of natural language. Techniques suc...

Ngày tải lên : 31/03/2014, 21:20

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Báo cáo khoa học: "Unsupervised Event Coreference Resolution with Rich Linguistic Features" potx

... parameters associated with an event z, φ a notation for all model parameters, and X a notation for all random variables that represent observable features. 2 Given a document collection annotated ... dia of Philosophy (Fall 2009 Edition), Edward N. Zalta (ed.), http://plato.stan ford.edu/archives/fall2009/entries/davidson/. Srini Narayanan and Sanda Harabagiu. 2004. Ques- tion Ans...

Ngày tải lên : 07/03/2014, 22:20

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Báo cáo khoa học: "Joint Bilingual Sentiment Classification with Unlabeled Parallel Corpora" potx

... unlabeled data and its automatic Chinese translation, and vice versa. Although not as significant as those with parallel data, we can still obtain improvements using the pseudo-parallel data, ... Banea, Rada Mihalcea, and Janyce Wiebe. 2010. Multilingual subjectivity: Are more languages better? In Proceedings of COLING’10. Carmen Banea, Rada Mihalcea, Janyce Wiebe, and Samer Hass...

Ngày tải lên : 17/03/2014, 00:20

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Báo cáo khoa học: "Training Conditional Random Fields with Multivariate Evaluation Measures" potx

... forward and backward Viterbi algorithm, which is almost the same as calculating Eq. 3 with a variant of the forward- backward algorithm (Sha and Pereira, 2003). The same numerical optimization ... non-linear measures such as F- score, while all of the above criteria achieve optimization based on the linear combination of average accuracies, or error rates, rather than a given task-s...

Ngày tải lên : 17/03/2014, 04:20

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Báo cáo khoa học: "Reducing SMT Rule Table with Monolingual Key Phrase" potx

... reason is that f 3 may appears in various phrases, such as “ , accept France ’s invitation”. While f 2 almost always appears in f 1 , indicating that the variable X may not be replaced with other words ... C-value, a measurement of automatic term recognition, to score source phrases. A source phrase is regarded as a key phrase if its score greater than a threshold. Note that a sou...

Ngày tải lên : 31/03/2014, 00:20

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Báo cáo khoa học: "Combining a Chinese Thesaurus with a Chinese Dictionary" potx

... evaluation, on the one hand, can be .carried out automatically in a large scale, on the other hand, can suggest what the direct evaluation entails in some way because that none appropriate ... their accuracy rates and loss rates manually. Tab. 5 lists the results. Ta~ num. 0 2 Aver. accuracy(%) Aver. loss(%) 94.6 7.3 90.1 5.2 87.6 2.1 Tab. 5. Average accuracy and loss rates .....

Ngày tải lên : 31/03/2014, 04:20

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