Báo cáo khoa học: "Semi-Supervised Maximum Entropy Based Approach to Acronym and Abbreviation Normalization in Medical Texts" doc

... training data for ME modeling and present examples of training and testing data obtained from a medical sub-domain of rheumatology. Finally, I will discuss the training and testing process and ... of automatically generating training data for Maximum Entropy (ME) modeling of abbreviations and acronyms and will show that using ME modeling is a promising technique for abbrevi...

Ngày tải lên: 17/03/2014, 08:20

... Existing approaches include feature -based and kernel -based classification. Feature -based approaches transform the context of two entities into a liner vector of carefully selected linguistic ... PERSON-AFFLIATION. The insufficient study in Chinese relation extraction drives us to investigate how to find an approach that is particularly appropriate for Chinese. 3 A Chin...

Ngày tải lên: 20/02/2014, 09:20

... phospholipids inhibit intra- molecular association between the N- and C-terminal regions of vinculin, exposing actin-binding and protein kinase C phosphorylation sites on serines 1033 and 1045 [34,35]. ... glycoproteins containing N-linked glycans [40]. The meprins are extensively glycosylated, comprising approximately 25% carbohydrates, which are N-linked in meprina and both N- an...

Ngày tải lên: 07/03/2014, 06:20

... proposed for storing translation pairs in a TMEM, finding translation examples that are relevant for translating unseen sentences, and modifying and integrating translation fragments to produce correct ... Towards a Unified Approach to Memory- and Statistical -Based Machine Translation Daniel Marcu Information Sciences Institute and Department of Computer Science University ......

Ngày tải lên: 17/03/2014, 07:20

... parsing. 3 The information-theory -based feature type analysis model for statistical syntactic parsing In the prediction of stochastic events, entropy and conditional entropy can be used to evaluate the ... the different parsing models lies mainly in that they use different feature types or feature type combination to divide the contextual condition into equivalent classes. Our...

Ngày tải lên: 20/02/2014, 18:20

... Jelinek, and Robert L. Mer- cer. 1983. A maximum linklihood approach to continuous speech recognition. IEEE Transac- tions on Pattern Analysis and Machine Intelligence, 5(2):179–190. Sergey Brin ... X), and thus is expensive. In view of this problem, we targeted Information Technology Engineers Examinations 4 , which are bian- nual (spring and autumn) examinations necessary fo...

Ngày tải lên: 20/02/2014, 18:20

... distributions in order to distinguish between the general and spe- cific topics in documents. In the context of sum- marization, this distinction helps to identify the important pieces of information in ... the words belong to topics that are specific to single documents (58% and 51% respectively for both sets A and B) and to the background distribution, whereas the jo...

Ngày tải lên: 31/03/2014, 20:20

... N-terminal b-domain (amino acids 1-30) binds three divalent metal ions by nine deprotonated cysteines in a hexane-like cluster [M(II) 3 - Cys 9 ], including three bridging and six terminal cyste- ines. ... C-terminal a-domain (amino acids 31-61) binds four divalent metal ions by 11 deprotonated cysteines in an adamantane-like cluster [M(II) 4 -Cys 11 ], including five bridging and six...

Ngày tải lên: 16/02/2014, 15:20

... spermidine. On the other hand, all our attempts to detect ODC or ADC enzy- matic activities in various strains of wild-type T. cruzi epimastigotes, by adding radioactive ornithine or arginine to intact ... transforming plasmid arranged in tandem were integra- ted into a parasite chromosome (1.4 Mbp) bearing a ribosomal RNA locus. The sensitivity of transcription to a-amanitin strong...

Ngày tải lên: 19/02/2014, 07:20

... curves. Squares and dotted line: data and fitting with PHI/PHO ratio of 0.5. Triangles and continuous line: data and fitting with PHI/PHO ratio of 1. Asterisks and broken line: data and fitting with PHI/PHO ... candidate to explain the regulatory effect. In fact, on addition of PHI, the fluorescence of PHR-bound flavin increases. This finding points to a PHI-induced conformational...

Ngày tải lên: 21/02/2014, 00:20