Báo cáo khoa học: "Utilizing Co-Occurrence of Answers in Question Answering" pdf

... an- notated using changes in initiative as a starting point; these changes were taken as marking either a segment endpoint or the beginning of a nested segment. tion following a question takes initiative. ... Rules for Assigning Initiative about the effectiveness of Socratic tutoring in the BEE domain or Socratic tutoring in general. 3.2 Initiative Annotation Method The two defini...

Ngày tải lên: 22/02/2014, 02:20

... Linguistics Utilizing Co-Occurrence of Answers in Question Answering Abstract In this paper, we discuss how to utilize the co-occurrence of answers in building an automatic question answering system ... terms. During the development of our TREC QA sys- tem, we found the answers of some questions in a series have higher co-occurrence. For example, in...

Ngày tải lên: 31/03/2014, 01:20

... proteins that evolved independently from hemocyanins [4]. Although hexamerins might be ubiquitous in insects [14,19–21], hemocyanin appears to be missing in eume- tabolous insects [22]. Here we investigate ... coordinated by three histidines in two distinct binding sites. Some hemocyanins assemble into large oligomers of up to 8 · 6 subunits [1]. The occurrence and properties of hem...

Ngày tải lên: 18/02/2014, 08:20

... gradual decrease of the number of nucleosomes per chain in the main peak, with a corresponding increase in the Fig. 5. UV absorbance profiles of sucrose gradients of an oligonu- cleosome sample of six to ... the size of the original samples after digestion of the linkers, was sug- gested by Dorigo et al. [14] to indicate incomplete crosslinking. However, incomplete but random...

Ngày tải lên: 18/02/2014, 18:20

... Quercetin did not inhibit ROS generation, and enhanced cytotoxicity of Topotecan in both cells. In contrast, NAC enhanced resistance against doxorubicine and vincristine in MRP1 overexpressing cells. ... perplexing diversity of lesions is continuously induced in our genes ranging from sin- gle and double strand breaks, to chemical alterations of nucleo- tides including adducts,...

Ngày tải lên: 19/02/2014, 07:20

... 301–333) of ephrin B2 confers high-affinity binding to the SH2 domain of the Grb4 protein. Tyrosine phosphorylation at other candi- date sites resulted in only minor change of the binding of Tyr304-phosphorylated ... effect of tyrosine phosphorylations on the binding affinity of ephrinB2(301–333) to the SH2 domain of Grb4 and to the PDZ domain of PDZ-RGS3. In the combination ex...

Ngày tải lên: 19/02/2014, 12:20

... doubling rules in the inflection of English verbs C. The determination of word-breaking rules as used in end -of- the-line practices in type composition D. The determination of parts -of- speech ... leads to interest- ing results. In order to obtain a procedure for finding affixes, we will make use of one of the main results of reference 1. There we found that certain...

Ngày tải lên: 19/02/2014, 19:20

... proximal region of mouse chromosome 5 [14,15]. Fgl2 is a member of the fibrinogen family, which includes tenascin, cyto- toxin, and fibrinogen [16–18]. Fibrinogen-like protein family members all contain fibrinogen-related ... the pivotal role of fgl2 in a murine model for murine hepatitis virus strain 3 (MHV-3) induced fulminant hepatic failure [21,22]. Administration of neutralizing a...

Ngày tải lên: 20/02/2014, 11:20

... progressed slowly [6], mainly because of technical difficulties in purifying and handling integral membrane proteins. The instability of these proteins in environments lacking phospholipids and the ... two limiting cases. The intermediate values (6.4 Hz) of the backbone couplings for Tyr4 and His6 are possibly the result of twisting or bending in the middle of the amino-acid se...

Ngày tải lên: 20/02/2014, 23:20

... The Role Of Focussing in Interpretation of Pronouns Candace L. Sidner Artificial Intelligence Laboratory Massachusetts Institute of Technology Cambridge, MA 02139 ... authors all point out the need for inferencing as part of anaphora disambiguation, but each of their schemes for inferencing suffer from the need for control which will reduce the combinatorial ... represe...

Ngày tải lên: 21/02/2014, 20:20