Báo cáo khoa học: "Large Scale Acquisition of Paraphrases for Learning Surface Patterns" potx

... Proceedings of ACL-08: HLT, pages 674–682,Columbus, Ohio, USA, June 2008.c2008 Association for Computational LinguisticsLarge Scale Acquisition of Paraphrases for Learning Surface PatternsRahul ... pre-computes paraphrases for alarge set of surface patterns using distributional sim-ilarity over a large corpus and then obtains patterns for a relation by simply ﬁnding paraphrases (of ine) for a ... remainder of the section describes our model for learning surface patterns for target relations.4.1 Model Assumption Paraphrases express the same meaning using differ-ent surface forms. So...

Báo cáo khoa học: "Large-Scale Induction and Evaluation of Lexical Resources from the Penn-II Treebank" potx

... seman-tic forms induced by our method for sections 0–24 of the WSJ section of the Penn-II treebank. Whenwe do not distinguish semantic forms by category,all semantic forms together with those for ... 0.007accept([subj,obj,obl :for] ) 1 0.007accept([subj,obj,xcomp]) 1 0.007Table 1: Semantic Forms for the verb accept markedwith p for passive use.4 ResultsWe extract non-empty semantic forms2 for 3586verb ... infor-mation contained in COMLEX suitable as an eval-uation standard for the LFG semantic forms whichwe induce.5.1 COMLEX-LFG MappingWe devised a common format for our induced se-mantic forms...

Báo cáo khoa học: "Efﬁcient Inference of CRFs for Large-Scale Natural Language Data" docx

... amethod of choosing appropriate values for the settingfunction δ of the active set and for the constant valueω of the inactive set. These two problems are closelyrelated. The size of the active ... All of our model variants were basedon Sparse model. For the hyper parameter , we empir-ically selected 0.001 for Method 1 (this preserves 99% of probability density), 0 for Method 2, and 4 for ... However, for largenumber of output labels, the inference is often pro-hibitively expensive.To alleviate this problem, researchers have begun tostudy the methods of increasing inference speeds of CRFs....

Báo cáo khoa học: Large-scale overproduction, functional puriﬁcation and ligand afﬁnities of the His-tagged human histamine H1 receptor ppt

... phase for an MOI of 0.1, 1 and 10, butusually lagged behind at a MOI of 0.01. As a lower MOIrequires less viral inoculate, which is a strong advantage for large -scale cultures, a number of parameters ... stability required the use of dodecylmaltosideas a detergent in the presence of a high concentration of NaCl and of a suitable inverse agonist. Efficient purification of solubilized receptor could ... control of the strong AcMNPVpolyhedrin promoter. A monolayer of Sf9 cells was used for the generation and amplification of the recombinantbaculovirus (pBac-H1His10) [15]. The sequence of theHis-tagged...

Tài liệu Báo cáo khoa học: "Large-Scale Syntactic Language Modeling with Treelets" docx

... model outperforms the n-gram model for bothtypes of classiﬁcation, and achieves the same per-formance as the discriminative system of Foster etal. (2008), which is state -of- the-art for this data ... University.968Proceedings of the 50th Annual Meeting of the Association for Computational Linguistics, pages 959–968,Jeju, Republic of Korea, 8-14 July 2012.c2012 Association for Computational LinguisticsLarge -Scale ... conditioned on contexts consisting of previously generated treelets (rules, nodes, etc.).Formally, let T be a constituency tree consisting of context-free rules of the form r = P → C1· · · Cd,where...

Báo cáo khoa học: "Large-Scale Cross-Document Coreference Using Distributed Inference and Hierarchical Models " pptx

... 5: Person-X Evaluation of Pairwise model:Performance as number of machines is varied, aver-aged over 5 runs.Number of Entities 43,928Number of Mentions 1,567,028Size of Largest Entity 6,096Average ... component of many knowl-edge discovery tasks has inspired several efforts.A number of previous techniques use scoringfunctions between pairs of contexts, which are thenused for clustering. One of ... random redistribution is often wasteful. For ex-ample, if dissimilar entities are assigned to a ma-chine, none of the proposals may be accepted. For alarge number of entities and machines,...

Báo cáo khoa học: "Weakly-Supervised Acquisition of Open-Domain Classes and Class Attributes from Web Documents and Query Logs" pot

... onlyevaluated for three hand-picked classes, with preci-sion scores of 90% for names of countries, 87% for ﬁsh species and 68% for instances of constellations.Our evaluation of the accuracy of class ... clusters of queries based on vectors {V}04. For each cluster of phrases S in {S}05. {CS} = ∅06. For each query Q of S07. Insert labels of Q from {ME} into {CS}08. For each label CS of {CS}09. ... Precision of attributes extracted for a sample of 25 classes. Seed attributes are provided for only one class. for a total of 5 attributes over all classes (the graphsat the bottom of Figure...

Báo cáo khoa học: "Large Scale Collocation Data and Their Application to Japanese Word Processor Technology" potx

... paper, we present some results of our experiments of Kana-to-Kanji conversion, focusing on the usage of large scale collocation data. In chapter 2, descriptions of the collocations used in ... Experiments 4.1 Text Data for Evaluation Prior to the experiments of Kana-to-Kanji conversion, we prepared a large volume of text data by hand which is formally a set of triples whose first ... ¢ There are many kinds of notational fluctuation in Japanese. For example, the conjugational suffix of some kind of Japanese verb is not always necessi- tated, therefore,~l,,I I'{'f,~fi...

Báo cáo khoa học: "CORPUS-BASED ACQUISITION OF RELATIVE PRONOUN DISAMBIGUATION HEURISTICS" pdf

... automated approach for the acquisition of relative pronoun disambiguation heuristics that duplicates the performance of hand- ceded rules. Unfortunately, extending the technique for use with unrestricted ... Agency of the Department of Defense monitored by the Air Force Office of Scientific Research under Contract No. F49620-88-C-0058. 7 REFERENCES Brent, M. (1991). Automatic acquisition of subcategorization ... parsers seem to employ one of 3 approaches for relative pronoun disambiguation. Systems that use a formal syntactic grammar often directly encode information for relative pronoun disambiguation...

Báo cáo khoa học: "Weakly-Supervised Acquisition of Attributes over Conceptual Hierarchies" docx

... gasmileage for the class of sports cars).Existing work on large -scale attribute extractionfocuses on producing ranked lists of attributes, for target classes of instances available in the form of ﬂat ... original sets of labeled classes, of 53% for Esand 304% for Ea.4.2 Evaluation of AttributesTarget Hierarchy Concepts: The performance of attribute extraction is assessed over a set of 25 tar-get ... to theroot of the hierarchy. The resulting sets of in-stances constitute the input to the acquisition of attributes, which consists of four stages:1) identiﬁcation of a noisy pool of candidate...

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