a social networkbased trust model for ecommerce

... various language-pairs, one issue is that matching syn- tactic analysis can not always guarantee a good translation, and violating syntactic structure does not always induce a bad translation. Marton and Resnik ... Singapore, 2-7 August 2009. c 2009 ACL and AFNLP A Syntax-Driven Bracketing Model for Phrase-Based Translation Deyi Xiong, Min Zhang, Aiti Aw and Haizhou Li Human Language Technology Institute for ... Reordering Model for Statistical Machine Translation. In Proceedings of ACL-COLING 2006. Deyi Xiong, Min Zhang, Aiti Aw, and Haizhou Li. 2008. Linguistically Annotated BTG for Statistical Machine Translation....

Ngày tải lên: 20/02/2014, 07:20

... Communication Re- search Centre, University of Edinburgh. John Hale, Izhak Shafran, Lisa Yung, Bonnie Dorr, Mary Harper, Anna Krasnyanskaya, Matthew Lease, Yang Liu, Brian Roark, Matthew Snover, and ... modified for use in a special repair grammar, which not only reduces the amount of available training data, but violates our intuition that most reparanda are fluent up until the actual edit occurs. The ... syntax trees using this model achieve high accuracy on the standard Switchboard parsing task. 1 Introduction Speech repairs occur when a speaker makes a mis- take and decides to partially retrace...

Ngày tải lên: 20/02/2014, 09:20

... groups and domains can be modeled separately without accessing and adapting the language model of the MT system for each SMS application. Another advantage is that the normalization module can ... normalization as a translation problem from the SMS language to the English language 1 and we propose to adapt a phrase-based statistical MT model for the task. Evaluation by 5-fold cross validation ... a consensus translation technique to bootstrap parallel data using off-the-shelf translation sys- tems for training a hierarchical statistical transla- tion model for general domain instant...

Ngày tải lên: 20/02/2014, 12:20

... measure shows substantial im- provement in structural disambiguation over a syntax-based approach. 1. Introduction In a large natural language processing system, such as a machine translation ... R&D Road II, Science-Based Industrial Park Hsinchu, TAIWAN 30077, R.O.C. ABSTRACT In natural language processing, ambiguity res- olution is a central issue, and can be regarded as a ... information. Hence, we will show how to annotate a syntax tree so that various interpretations can be characterized differently. Semantic Tagging A popular linguistic approach to annotate a...

Ngày tải lên: 20/02/2014, 21:20

... proliferation and invasion. Choriocarcinoma is a malignant neoplasm that represents the early trophoblast of the attachment phase or as later invasive stage [46–48]. Thus, in most cases, choriocarcinoma ... reproductive and cardiovascular pathophy- siology. Proc. Natl. Acad. Sci. USA 96, 9322–9327. 62. Imachi, H., Murao, K., Sayo, Y., Hosokawa, H., Sato, M., Niimi, M., Kobayashi, S., Miyauchi, A. , Ishida, ... & Takahara, J. (1999) Evidence for a potential role for HDL as an important source of cholesterol in human adrenocortical tumors via the CLA-1 path- way. Endocr. J. 46, 27–34. 63. Cherradi,N.,Bideau,M.,Arnaudeau,S.,Demaurex,N.,James, R.W.,...

Ngày tải lên: 20/02/2014, 23:20

... is substantial re- search focusing on syntactic tree alignment model for machine translation. For example, (Wu 1997; Alshawi, Bangalore, and Douglas, 2000; Yamada and Knight, 2001) have studied ... for Machine Translation in the Americas. Munteanu D. S, A. Fraser, and D. Marcu. D., 2002. Improved Machine Translation Performance via Parallel Sentence Extraction from Comparable Corpora. ... three features, the maximum en- tropy model is trained on 1,000 pairs of web pages manually labeled as parallel or non- parallel. The Iterative Scaling algorithm (Pietra, Pietra and Lafferty...

Ngày tải lên: 08/03/2014, 02:21

... measure of relatedness does (low y values for small x values and high y values for high x). The same pattern applies in the M&C and 353-C data sets. 4.2 Evaluation of the GVSM For the evaluation ... query, are computed similarly. A GVSM model aims at being able to retrieve documents that not necessarily contain exact matches of the query terms, and this is its great advantage. This new space ... Linguistics A Generalized Vector Space Model for Text Retrieval Based on Semantic Relatedness George Tsatsaronis and Vicky Panagiotopoulou Department of Informatics Athens University of Economics and Business, 76,...

Ngày tải lên: 08/03/2014, 21:20

... exponential translation model for target language morphology. In ACL-HLT. C. Tillmann. 2004. A unigram orientation model for statistical machine translation. In NAACL. K. Toutanova, H. Suzuki, and A. ... similar agreement phenom- ena as probabilistic sequences. Factored Translation Models Factored transla- tion models (Koehn and Hoang, 2007) facilitate a more data-oriented approach to agreement modeling. Words ... phrase ta- ble annotations and can be easily implemented as a feature in many phrase-based decoders. 1 Introduction Languages vary in the degree to which surface forms reflect grammatical relations....

Ngày tải lên: 16/03/2014, 19:20

... information for each character. Each character can be assigned one of two possi- ble boundary tags: “B” for a character that begins a word and “I” for a character that occurs in the mid- dle of a word. ... representa- tion (Ramshaw and Marcus, 1995) and the Start/End representation (Kudo and Matsumoto, 2001) are popular. For example, the label B-NN indicates that a character is located at the begging of a noun. ... POS information is allowed to inter- act with segmentation. Note that word segmentation can also be formulated as a sequential classification problem to predict whether a character is located at the...

Ngày tải lên: 17/03/2014, 00:20

... related words and detect regular trans- formational patterns. A range of automated algorithms for morpholog- ical analysis cope with concatenative phenomena, and base their mechanics on statistics ... thank Emily Pitler and Samarth Ke- shava for making available the code of the RePortS algorithm, and Stefan Bordag and Delphine Bern- hard for running their algorithms on the German data. Many ... presented here have been shown to improve accuracy (Kurimo et al., 2006). Another motivation for evaluating the system on a task rather than on manually annotated data is that linguistically motivated morphological...

Ngày tải lên: 17/03/2014, 04:20

... Linguistics A Hierarchical Phrase-Based Model for Statistical Machine Translation David Chiang Institute for Advanced Computer Studies (UMIACS) University of Maryland, College Park, MD 20742, USA dchiang@umiacs.umd.edu Abstract We ... USA dchiang@umiacs.umd.edu Abstract We present a statistical phrase-based transla- tion model that uses hierarchical phrases— phrases that contain subphrases. The model is formally a synchronous ... statistical machine translation. Natural Language Engineering. To appear. Daniel Marcu and William Wong. 2002. A phrase- based, joint probability model for statistical machine translation. In Proceedings...

Ngày tải lên: 17/03/2014, 05:20

... Society of America, pages 547–550. Eric Brill. 1993. Automatic grammar induction and parsing free text: A transformation-based approach. In ACL 31, pages 259–265. Glenn Carroll and Eugene Charniak. 1992. ... shown, but are modeled. Parameter search is also local; parameters which are locally optimal may be globally poor. A con- crete example is the experiments from (Carroll and Charniak, 1992). They ... not beat RBRANCH in F 1 ). 6 EMILE and ABL are lexical systems described in (van Za- anen, 2000; Adriaans and Haas, 1999). CDC-40, from (Clark, 2001), reflects training on much more data (12M...

Ngày tải lên: 17/03/2014, 08:20

... a suitable amount of training data, the model can thus learn to make the correct deci- sion. The dynamic-programming based graph- based parser is designed in such a way that any score calculation ... in the beam are recalculated based on a scoring model inspired by the graph-based parsing ap- proach, i.e., taking complete factors into account as they become incrementally available. As a con- sequence ... algorithm we are looking for has to be transition-based at the top level. The advan- tages of the graph-based approach – a more glob- ally informed basis for the decision among dif- ferent attachment...

Ngày tải lên: 17/03/2014, 22:20

... Zhang, Aiti Aw, and Haizhou Li. 2009. A Syntax-Driven Bracketing Model for Phrase-Based Translation. In Proc. ACL, pages 315-323. Kenji Yamada and Kevin Knight. 2001. A Syntax- based Statistical ... of classes may cause serious data sparseness problem and thereby degrade the clas- sification accuracy, we approximate CBSM by a binary classification problem which can be solved by the maximum ... trans- lation in traditional phrase-based models (Koehn et al., 2003; Xiong et al., 2006), but also char- acterize the complicated long distance reordering similar to syntactic based statistical...

Ngày tải lên: 23/03/2014, 16:20

... (McNamee and Dang, 2009). These metrics are:  Micro-Averaged Accuracy (Micro- Accuracy): measures entity linking accuracy averaged over all the name mentions;  Macro-Averaged Accuracy (Macro- Accuracy): ... name and the National Basketball Association is the referent entity. “He won his first [[National Basketball Association | NBA]] championship with the Bulls” Therefore, we can get the training ... misspellings) of an entity's name using a statistical translation model. Given an entity’s name s, our model assumes that it is a translation of this entity’s full name f using the IBM model 1...

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