Báo cáo khoa học: "Exploring Correlation of Dependency Relation Paths for Answer Extraction" doc

... we explore correlation of dependency relation paths to rank candi-date answers in answer extraction. Usingthe correlation measure, we compare de-pendency relations of a candidate answer and ... incorporate the correlationsand rank candidate answers.3 Dependency Relation Path Correlation In this section, we discuss how the method per-forms in detail.3.1 Dependency Relation Path ExtractionWe ... 2006.c2006 Association for Computational LinguisticsExploring Correlation of Dependency Relation Paths for Answer ExtractionDan ShenDepartment of Computational LinguisticsSaarland UniversitySaarbruecken,...

Báo cáo khoa học: Deﬁnition of the residues required for the interaction between glycine-extended gastrin and transferrin in vitro pptx

... biochemical basis of the gastrin–transferrin inter-action is still unknown. Knowledge of the regions of transferrin required for the binding of gastrin, and of the regions in gastrin required for the ... bepresent for formation of the complex between ApoTfand Ggly or Gamide.The effect of ferric ions on the stability of the gas-trin–ApoTf complex was then investigated. After for- mation of the ... C-terminus of Ggly and the pentaglutamate sequence are criticalto the interaction with ApoTf. Thus, one or more of the seven C-terminal amino acids of Ggly is necessary for the formation of the...

Báo cáo khoa học: The importance of polymerization and galloylation for the antiproliferative properties of procyanidin-rich natural extracts doc

... com-pounds of interest in the prevention of colon cancer.In the present study, we investigated the relationship of different structural factors of procyanidins, such asthe mean degree of polymerization ... However, the development of effec-tive and safe agents for the prevention and treatment of cancer remains inefﬁcient and costly, and falls short of the requirements for primary prevention among ... and OWP are composed of species that are solublein both ethyl acetate and water, and the rest of the frac-tions (G for grape, P for pine) were generated by a combi-nation of preparative RP-HPLC...

Báo cáo khoa học: "Probabilistic Integration of Partial Lexical Information for Noise Robust Haptic Voice Recognition" doc

... letter of a word.Therefore, lirepresents one of the 26 letters. As pre-viously mentioned, for keyboard input, hiare dis-crete features whose values are also one of the 26letters. Therefore, ... LER performance of synchronousHVR in different noise conditionsThe performance of synchronous HVR is shownin Table 4. Compared to the results shown in Ta-ble 3, the WER performance of synchronous ... the process of convertingspeech into text using ASR is error-prone, wheresigniﬁcant performance degradation is often due tothe presence of noise or other acoustic interference.Therefore, it...

Báo cáo khoa học: "Local Histograms of Character N -grams for Authorship Attribution" ppt

... dl{1, ,k}i of k local histograms are computed for each doc- ument i. Each histogram dljicarries informationabout the distribution of terms at a certain positionµj of the document, where ... combination of sev-eral local histograms calculated at different locations of the document, hence, it seems that the raw sum of local histograms results in a loss of useful informa-tion for representing ... results for these datasets as well: BOW and LOWBOW histograms ob-tained comparable performance to each other andthe BOLH formulation performed the best. TheBOLH formulation outperforms state of...

Báo cáo khoa học: "The utility of parse-derived features for automatic discourse segmentation" doc

... corpus is partitioned into a train-ing set of 347 documents and a test set of 38 doc- uments. This test set consists of 991 sentences with2,346 segments. For training purposes, we createda held-out ... RST-DT donot correspond to a well-formed subtree in the hu-man annotated discourse parse for that document.Therefore, to perform accurate and efﬁcient pars-ing of the RST-DT at the paragraph ... Proceedings of the 45th Annual Meeting of the Association of Computational Linguistics, pages 488–495,Prague, Czech Republic, June 2007.c2007 Association for Computational LinguisticsThe utility of...

Báo cáo khoa học: "The order of prenominal adjectives in natural language generation" doc

... so for whichsemantic information is least necessary.While we do not reliably have access to themeaning of an adjective, we do always have ac-cess to its form. And, fortunately, for many of the ... while either of the methods gives theright answer for about 89% of the test data, one of the two is right 95.00% of the time. This in-dicates that a method which combined the infor-mation used ... H(Df=vi) is the entropy of subset of the in-stance base which has value vi for feature f. Theinformation gain of a feature then is simply thedifference between the total entropy of the in-stance...

Báo cáo khoa học: "Thematic segmentation of texts: two methods for two kinds of texts" pdf

... articles often refer to a same notion with a large set of different words linked by semantic or pragmatic relations. Thus, there is often no reiteration of terms representative of the text ... thematic dimension of the texts, they have to be represented by their significant features from that point of view. So, we only hold for each text the lemmatized form of its nouns, verbs ... augments the first method by making use of information coming from a lexical co-occurrence network. 392 This network allows a mutual reinforcement of descriptors that are different but strongly...

Báo cáo khoa học: "Automatic Induction of Finite State Transducers for Simple Phonological Rules" pptx

... values for some subset of the pho- netic features. Thus if we think of the transducer as a set of rewrite rules, we can now express the context of each rule as a regular expression of natural ... problem of parsing the output of phonological rules in order to obtain the underlying, lexical forms (Karttunen 1993). In this paper we explore an- other consequence of FST models of phonological ... state with all of the incoming and outgoing transitions of s and f. The result of the first merging operation on the transducer of Figure 2 is shown in Figure 3, and the end result of the OSTIA...

Báo cáo khoa học: Critical role of the plasma membrane for expression of mammalian mitochondrial side chain cleavage activity in yeast pptx

... coding for the matureAdrp (preceded by a methionine codon) by sequencescoding for the mature form of cytochrome CYP11A1(preceded by a methionine codon). pV13SCC expresses themature form of CYP11A1 ... largearray of steroids using a limited set of cytochrome P450enzymes [2]. The biosynthesis of all hormonal steroidsbegins with the side chain cleavage (SCC) of cholesterol [3]to form pregnenolone, ... mammaliancells [56], a decrease in the level of expression of Adxp hasdramatic consequences for SCC activity. Alterations in thelevel of expression of Adrp in yeast have no effect asdescribed...

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