Tài liệu Báo cáo khoa học: "Unsupervised Search for The Optimal Segmentation for Statistical Machine Translation" doc

... Student Research Workshop, pages 31–36, Uppsala, Sweden, 13 July 2010. c 2010 Association for Computational Linguistics Unsupervised Search for The Optimal Segmentation for Statistical Machine ... into ques- tion: For the particular language pair and training corpus at hand, what is the optimal (level of) sub- word segmentation? Therefore, it is desirable to learn...

Ngày tải lên: 20/02/2014, 04:20

... us- ing the same procedure as for the baseline sys- tem; the only difference is the basic unit we are considering. Once the phrases are extracted, we perform the estimation of weights for the fea- tures ... evaluate the performance of our approach via the Chinese–English transla- tion task, i.e. we measure the influence of the segmentation process on the final tran...

Ngày tải lên: 22/02/2014, 02:20

... generating the SRs indepen- dently of each other given the interval is based on the intuition that knowing the core roles informs us about the expected non-core roles that occur be- tween them. This ... which means that the only context information a SR has is whether it is to the left or right of the predicate. 2 The baseline F1 reported by Lang and Lapata (2011b) is 79.5 d...

Ngày tải lên: 19/02/2014, 19:20

... merge them; if one of them was a document-level segment then the new segment has the same document-level topic. All the moves are selected with the uniform prob- ability, and the distance c for the ... parts. The formal definition of our model is as follows: • Draw the document-level topic proportions β (doc) ∼ GEM(α (doc) ). • Choose the document-level language model φ...

Ngày tải lên: 20/02/2014, 04:20

... entry into the baseline table. On the other hand, if the en- try is already in the baseline phrase table, then we merge the entries by enforcing the translation prob- ability as we obtain the same ... get the transla- tion entries for the full-form, we can replace the full- form Chinese with its abbreviation to generate trans- lation entries for the abbreviation. Mor...

Ngày tải lên: 20/02/2014, 09:20

... most address only one of the two issues (usually for the very good reason that the dataset itself provides the other, for example by the ex- plicit separation of individual documents or news stories ... corresponds to the desired general level of granularity. For each set of annotations, we therefore performed two sets of segmentations: one in which the threshold was set...

Ngày tải lên: 20/02/2014, 11:21

... and the function of the head is the function of the whole chunk. “NP-SBJ” means a NP chunk as the subject of the sentence. The other words in a chunk that are not the head have “NOFUNC” as their ... encoding the distances between the various points. The affinity matrix is then nor- malized to form a matrix L by conjugating with the the diagonal matrix D −1/2 which has a...

Ngày tải lên: 20/02/2014, 12:20

... 1e+06 size(KB) recall precision 434 Proceedings of the COLING/ACL 2006 Main Conference Poster Sessions, pages 428–435, Sydney, July 2006. c 2006 Association for Computational Linguistics 428 0 0.1

Ngày tải lên: 20/02/2014, 12:20

... 2). In the final stage, the information gathered from the first site saturation mutagenesis approach was combined by performing site saturation at posi- tion 51 on the A54R GO mutant, and then introducing the ... [2,6]. A further impetus for the adoption of glyphosate resistance traits is the reduction in cost brought about by the entry of generic producers following the exp...

Ngày tải lên: 14/02/2014, 14:20

... evolutionary conservation. The common picture emerging here is that the genes at the top of the cascade are not conserved, whereas the downstream genes have homologues in a much broader spectrum of species [1,2]. For ... differentiation, whereas the opposite is true for testicular develop- ment. Furthermore, in females, cyp19a1a expression increased 1 and 2 weeks before the...

Ngày tải lên: 14/02/2014, 19:20