Tài liệu Báo cáo khoa học: "Generalized Hebbian Algorithm for Incremental Singular Value Decomposition in Natural Language Processing" potx

... Generalized Hebbian Algorithm for Incremental Singular Value Decomposition in Natural Language Processing Genevieve Gorrell Department of Computer and Information Science Link¨oping University 581 83 LINK ¨ OPING Sweden gengo@ida.liu.se Abstract An ... a least-squared error, rank-N approximation to the original matrix A. Singular Value Decomposition is intimately rel...

Ngày tải lên: 22/02/2014, 02:20

... constraints is Chang et al. (2007). They use constraints for approximate EM training of an HMM, incorporating the con- straints by looking only at the top K most-likely sequences from a joint model ... outperform CRFs trained with GE. We tried adding the additional constraints described in CRR07 during test-time inference in our system, but found no accuracy improvement. After doing err...

Ngày tải lên: 20/02/2014, 09:20

... then adopt the mined patterns to re- represent the training/testing examples. Subse- quently, we use the off-the-shelf linear kernel SVM algorithm to perform training and testing. Besides, to ... The training of SVMs involves in minimize the following object (primal form, soft-margin) (Vapnik, 1995): ∑ = +⋅= n i ii yxWLossCWWW 1 ),( 2 1 )( :minimize α (1) The loss function indicate...

Ngày tải lên: 20/02/2014, 12:20

... required. First, the parsing speed-up directly reduces system response time required in such interactive natural language application sys- tems as those using natural language interface, speech ... candidates, while conven- tional sequential algorithms are implemented in combinational time. 1 INTRODUCTION Recent advancement in natural language pars- ing technology h...

Ngày tải lên: 21/02/2014, 20:20

... (2003). In MTG, synchronous rewriting is implemented by means of an indexing relation that is maintained over occurrences of nonterminals in a sentential form, using essentially the same ma- chinery ... disjoint from , and work with strings in , where . For , we define , i.e. the set of indexes that ap- pear in . An indexed tuple vector, or ITV, is a vector of tuples of strings over...

Ngày tải lên: 20/02/2014, 16:20

... a Plasmodium falciparum cysteine proteinase. J Clin Invest 88, 1467–1472. 38 deDominguez NDG & Rosenthal PJ (1996) Cysteine proteinase inhibitors block early steps in hemoglobin degradation by cultured ... agents, like those interfering with hemozoin polymerization in the vacuole (chloroquine, quinine, mefloquine and other alkaloids), the dihydro- folate pathway (pyrimethamine, sulphad...

Ngày tải lên: 14/02/2014, 14:20

... participating Table 1. Amino acid frequencies (%) in a-amylase linkers, in a set of globular proteins, in the Swiss-Prot databank and in intrinsically unstructured proteins. Amino acid Linkers a Globular proteins b Swiss-Prot c Intrinsically unstructured proteins b Ala ... (Table 1). There is therefore a much weaker driving force for folding the connecting linkers when compared with...

Ngày tải lên: 14/02/2014, 18:20

... of protein complexes in human SH-SY5Y neuroblastoma cells by using blue-native gel electrophoresis: an increase in lamin A ⁄ C associated with heat shock protein 90 in response to 6-hydroxydopamine-induced ... the interplay of cytosolic dopamine and increased a-synuc- lein are still unclear. Catecholaminergic SH-SY5Y human neuroblastoma cells are a suitable model for investigating dop...

Ngày tải lên: 15/02/2014, 01:20

... epilepsy-like firings [28]. Interestingly, several antiepileptic agents, including val- proate, gabapentin, and phenytoin, reduce astrocytic Ca 2+ oscillations, thereby leading to inhibition of ... astrocytic Ca 2+ transients are accentuated in pathological con- ditions, suggesting the involvement of astrocytic Ca 2+ transients in brain disorders, including epileptic sei- zures. Interestin...

Ngày tải lên: 16/02/2014, 09:20

... acti- vating E2Fs cooperate with NF-Y proteins binding to CCAAT-boxes and with Myb proteins associating with a distal Myb site in activating the Cdc2 promoter. Binding of the activating E2Fs during ... the MuvB proteins Lin-37, Lin-52, Lin-54 and chromatin- associated Lin-9 and Lin-53 ⁄ RBBP4 ⁄ RbAp48. Furthermore, A-Myb and B-Myb were present in immunoprecipitations for Lin-9, Lin-37 a...

Ngày tải lên: 16/02/2014, 09:20