Báo cáo khoa học: "Efficient Inference of CRFs for Large-Scale Natural Language Data" docx

... Proceedings of the ACL-IJCNLP 2009 Conference Short Papers, pages 281–284, Suntec, Singapore, 4 August 2009. c 2009 ACL and AFNLP Efficient Inference of CRFs for Large-Scale Natural Language Data Minwoo ... setting of parameters. We also present a simple but robust variant algorithm in which CRFs efficiently learn and predict large-scale natural language data. 2 Linea...

Ngày tải lên: 23/03/2014, 17:20

... been little description of inference algorithms for these automata beyond formal founda- tions. We give a detailed description of algorithms for application of cascades of weighted tree transducers ... weight of a path is calculated as the product of the weights of its edges, and that the weight of a (not necessarily finite) set T of paths is calculated as the sum of...

Ngày tải lên: 17/03/2014, 00:20

... 24 and 48 h of culture using trypan blue staining. (C) Cells were treated with 0.5, 1 and 2 lg of hpST3dODN and 1 and 2 lg of control ODN for 6 h or with lipids only; after 48 h of culture, they ... (1988) Induction of indoleamine 2,3-dioxygenase: a mechanism of the anti- tumor activity of interferon gamma. Proc Natl Acad Sci USA 85, 1242–1246. 41 Stephanou A (2004) Role of...

Ngày tải lên: 18/02/2014, 08:20

... molecular tools for the inhibition of the biosynthesis of b-secretase and for the exclusion of the formation of toxic b-amyloid peptides in HEK293 cells. Materials and methods Construction of plasmids for ... level of extra- and intracellular release of b-amyloid peptide, which is a product of the catalytic activity of the target protein. Our efforts to use Western blo...

Ngày tải lên: 08/03/2014, 08:20

... eluted (14–22) with 360 lLof4%(w/v)SDS (for analysis) or 0.1 M glycine/HCl, pH 2.3 (for purifica- tion). The amount of polypeptide in each 40 lLfractionand the ratio of the antigen-binding fraction ... synthesized into its active form. Before the start of translation, the reducing agent dithiothreitol, which normally is added to the wheat germ extract but which inhibits disulfide forma...

Ngày tải lên: 16/03/2014, 23:20

... n-gram sequences of order n. Φ n has a similar form to the WFST implementation of an n- gram language model (Allauzen et al., 2003). Φ n includes for each n-gram u = w n 1 arcs of the form: w n-1 1 w n 2 w n :u The ... newswire data and +0.5 BLEU for newsgroup data (row LMBR). The other rows of Table 1 show the performance of LMBR decoding using the hybrid decision rule of E...

Ngày tải lên: 23/03/2014, 16:20

... Introduction Performing textual inference is in the heart of many semantic inference applications such as Question Answering (QA) and Information Extraction (IE). A prominent generic paradigm for textual inference ... F 1 on the curve is .43 for Exact-graph, .41 for TNF, and .34 for No-trans. AUC in the recall range 0-0.5 is .32 for Exact-graph, .31 for TNF, and .26 for...

Ngày tải lên: 16/03/2014, 19:20

... do for speech recognition. Second, we explore heuristics for agenda-based search, and present a heuristic for our second pass that combines precomputed language model infor- mation with information ... is the set of candidate target language words outside the span of (i, j). h BB is the prod- uct of the upper bounds for the two on-the-border n-grams. This heuristic function...

Ngày tải lên: 23/03/2014, 17:20

... Knowledge Base for a Natural Language System Jerry R. Hobbs Artificial Intelligence Center SRI International and Center for the Study of Language and Information Stanford University ... interpretation of natural language discourse can require arbitrarily detailed world knowledge and that a sophisticated natural language sys- tem must have a large knowledge base...

Ngày tải lên: 17/03/2014, 19:21

... rate by only a factor of two [29]. Therefore, as well as to confine the conformational freedom of the ribozyme structure, we initially used an A 6 -linker for the design of reverse-joined hairpin ... reaction, the oxygen atom of the free 5¢-OH group of one RNA fragment attacks the phosphorous of the cyclic 2¢,3¢-phosphate group of another, result- ing in ligation of the two f...

Ngày tải lên: 20/02/2014, 01:20