Báo cáo khoa học: "Semi-Supervised Cause Identification from Aviation Safety Reports" pot

... of improving the aviation safety situation. One cen- tral task in the automatic analysis of these reports is cause identification, or the identification of why an incident happened. Aviation safety experts ... challenging text classification problem, cause identification from aviation safety reports, to the NLP commu- nity. Second, we created an annotated dataset for cause...

Ngày tải lên: 08/03/2014, 00:20

... to unfold. However, the refolding process may be different and more complex because the transition of refolding is from many unfolded states to a single native state. Based on previous kinetic ... stability or no secondary ⁄ tertiary structure results from either repla- cing the tryptophan at position 140 with alanine or the removal of a fragment from positions 140–149. This is supporte...

Ngày tải lên: 20/02/2014, 01:20

... calorimetric enthalpy (DH cal ), difference of DH cal of mutant from wild-type (%), heat capacity (DC p ) and difference of DC p of mutant from wild-type (%) were determined and the results for the ... parameters of the glycine susti- tution mutants also differed greatly from the wild-type protein. The T m values of these mutants ranged from 35 °Cto55°C. Among them, the E75G and E129G...

Ngày tải lên: 07/03/2014, 21:20

... historically the cause of major pandemics. These include the bubonic plague caused by Yersinia pestis, mesenteric adenitis and septicaemia caused by Yersinia pseudotuberculosis and gastroenteritis caused Keywords deubiquitinating ... YpkA- FLAG wild-type and D267A constructs were a kind gift from L. Navarro and J.E. Dixon (UCLA, Los Angeles, CA, USA). The OTUB1 ARF-1 construct was a gift...

Ngày tải lên: 16/02/2014, 15:20

... ances- tor classes, which is similar with multi-task learn- ing(Caruana, 1997; Xue et al., 2007). Because the global hierarchical categorization can avoid the drawbacks about those high-level irrecov- erable ... loss- sensitive based on the hierarchical structure. We need discriminate the misclassification from “near- ly correct” to “clearly incorrect”. Here we use tree induced error ∆(y, y...

Ngày tải lên: 20/02/2014, 05:20

... features count deleted, inserted and equal acronyms. Potential acronyms are extracted from word sequences that start with a capital letter and from words that contain multiple capital let- ters. ... addressed by a yearly competition (since 2010) in conjunction with the CLEF conference (Potthast et al., 2010; Potthast and Holfeld, 2011). State-of-the-art solutions in- volve supervised mach...

Ngày tải lên: 22/02/2014, 03:20

... (K¨ubler and Zhekova, 2009). Memory- based learning algorithms are said to be lazy be- cause no model is learned from the labeled data points. The labeled data points are the model. Con- sequently, ... tagging is often in short sup- ply. Semi-supervised learning algorithms are de- signed to learn from a mixture of labeled and un- labeled data. Many different semi-supervised algo- rithms...

Ngày tải lên: 07/03/2014, 22:20

... varied from 55 bp to 95 bp and the threshold forces ranged from 5 to 65 pN. In addition, the authors found a clear dependence of the average threshold force on ionic conditions, ranging from 24 pN ... effects of individual factors that potentially influence the mechanical properties of chromatin substrates. Acknowledgement This work was supported by grants from INSERM and CNRS. S.D. ac...

Ngày tải lên: 14/02/2014, 18:20

... be established from these MLL fusions [29,30]. These data may indicate that not every tested derivative(11)–derived MLL fusion allele is capable of conferring clonal growth. Because these negatively ... lymphoblastic leukemia within  6 months [36]. P-TEFb as potential drug target As outlined above, the most frequent MLL fusion pro- teins in AML and ALL derive from chromosomal trans- loca...

Ngày tải lên: 16/02/2014, 14:20

... Lactate dehydrogenase from Bacillus subtilis. Methods Enzymol 41, 304–309. 51 Moulis JM & Meyer J (1982) Characterization of the selenium-substituted 2 [4Fe-4Se] ferredoxin from Clostridium pasteurianum. ... existence of this intermediate was first established in NifS from A. vinn- elandii and, subsequently, based on structural studies, in SufS from Escherichia coli [17,18]. The pe...

Ngày tải lên: 18/02/2014, 04:20