Báo cáo khoa học: "Reasoning with Descriptions of Trees *" pptx
Báo cáo khoa học: "Reasoning with Descriptions of Trees *" pptx
... structure of trees in terms of the domination relation rather than the parent relation. This forms the basis of a class of deterministic parsers which build partial descriptions of trees rather ... Reasoning with Descriptions of Trees * James Rogers Dept. of Comp. & Info. Science University of Delaware Newark, DE 19716, USA K. Vijay-Shanker Dept. of Comp. & Info. ... partial descriptions of trees and the sets of trees they describe is made explicit in (Vijay-Shanker & Schabes, 1992). Here quasi -trees are used in developing a compact rep- resentation of...
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Báo cáo khoa học: "DEALING WITH INCOMPLETENESS OF LINGUISTIC KNOWLEDGE IN LANGUAGE TRANSLATION TRANSFER AND GENERATION STAGE OF MU MACHINE TRANSLATION PROJECT" potx
... eration stages of Japanese-to-English system of the machine translation project by the Japanese Govern- ment, with the emphasis on the ideas to deal with the incompleteness of linguistic knowledge ... as the flexibility of the generation process, the utilization of strong lexical information. The system is in the course of development in collaboration with a num- ber of computer scientists ... according to which a man can fill in the dictionary format with linguistic data of items. The manual guarantees a certain level of quality of the dictionary, which is important when many people...
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Tài liệu Báo cáo khoa học: "Robust Temporal Processing of News" pptx
... third (7 of 21, 5 of whichwere of type TIME) of all missed timeexpressions came from numeric expressionsbeing spelled out, e.g. “nineteen seventy-nine”. More than two thirds (11 of 16) of thetime ... word of the sentencePOS1: part -of- speech of the word before“today”POS2: part -of- speech of the word after“today”Label: specific or non-specific (class label)Table 3 shows the performance of ... time.Part of speech tagging: Some errors, both inthe identification of time expressions and theassignment of values, can be traced toincorrect part of speech tagging in thepreprocessing; many of...
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Báo cáo khoa học: Radical-induced oxidation of metformin pptx
... inhibition of metformin oxida-tion, in the presence of added hydrogen peroxide, wouldcome from the reaction of ÆOH radicals with H2O2.Anestimated value of the second order rate constant of k(ÆOH ... nodetectable effect of H2O2as an initiator of metforminoxidation in the absence of irradiation. However, underirradiation, there was a noticeable effect of the concentra-tion of H2O2(0.05, ... It can be noted that,because of the conjugation of the nitrogen electron pair [of NH2,NHandN(CH3)2]withtheC¼NH double bonds, thecharge transfe r process of ÆOH abstracting an electron...
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Báo cáo khoa học: "Generating a Table-of-Contents" pptx
... independent subtrees. Given a table -of- contents of depth n with a root branching factor of r, we gen-erate r subtrees, with a depth of at most n − 1. Werandomly select 80% of these trees for training, ... small number of available trees. Admittedly, this method of generating trainingand testing data omits some dependencies at thelevel of the table -of- contents as a whole. However,the subtrees used ... sentences places summarization of such texts beyond the scope of current methods.In this paper, we investigate the automatic gener-ation of tables -of- contents, a type of indicative sum-mary particularly...
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Báo cáo khoa học: Donor substrate regulation of transketolase pptx
... correlated with theamount of coenzyme bound in the a ctive centers of TK [3,4].This approach was used to determine the affinity of thecoenzyme to TK [4,9] and to study the interaction of ThDP with ... bsorptionafter a ddition of the final s ample of T hDP was used as a sign of full reconstitution of holoTK.10The final absorption levelcharacterizes the a mount of holoTK with ThDP bound intwo ... acid (HPA) after subtraction of the spectra of apoT K,thiamin diphosphate (ThDP) and HPA; (3) complex of TK with N3¢-pyridyl-ThD P after subtraction of the spectra of apoTK andN3¢-pyridyl-ThDP.4190...
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Báo cáo khoa học: "Reordering with Source Language Collocations" pptx
... collocated with dif-ferent words. For instance, when “潮流 chao-liu „trend‟” is collocated with “时代 shi-dai „times‟”, they are often translated into the “trend of times”; when collocated with “历史 ... composed of a group of words that occur together more often than by chance. Collocations effectively reveal the strong association among words in a sentence and are widely employed in a variety of ... co-occurrence information of lexical tokens and the position of words, but also the fertility of words in a sentence. And when the three SCBR models are combined, the performance of the SMT system...
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Tài liệu Báo cáo khoa học: "D-Theory: Talking about Trees" pptx
... parser is part of the correct analysis of the input. Again, in the context of this earlier theory, the form of the indelible syntactic analysis was that of a tree. One key idea of this earlier ... consequences of expressing syntactic structure in terms of domination to the use of names within D- theory. As stated above, it is this use of names which really makes D-theory analyses descriptions, ... formalization of the Extended Standard Theory der:ves domino.tion relations from their primary representation of linguistic structure, namely a set of strings of terminals and nonterminals with specified...
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Báo cáo khoa học: "Error Mining on Dependency Trees" pptx
... the number of occurrences of t in all input trees and count(t|FAIL) is the number of occurrences of t in input trees for which no outputwas produced.Since we work with subtrees of arbitrary ... dividingthe set of trees output by the surface realiser into aset of trees (FAIL) associated with overgeneration(the generated sentences do not match the originalsentences) and a set of trees (SUCCESS) ... (we acceptbigger trees whose suspicion rate is equal to the sus-picion rate of any of their subtrees), some amount of Algorithm 1 ErrorTreeMiner(D, minsup)Note: D consists of Dfailand DpassF1←...
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Tài liệu Báo cáo khoa học: parDtoxin–antitoxin system of plasmid R1 – basic contributions, biotechnological applications and relationships with closely-related toxin–antitoxin systems ppt
... of novel pep-tides with type II topoisomerase inhibitory activity[133].Concluding remarksparD of R1, jointly with ccd of F and parB ⁄ hok-sok of R1, contributed to establishing the field of ... result of the stimula-tion by DnaB of the synthesis of short RNAs by DnaGprimase [117]; some of these RNA primers could titratethe RNase activity of Kid or could bind to the activesite of the ... stabil-ization mediated by parD of R1 was associated with an inhibition of growth in cells without plasmidrather than with their apparent death, as was the casein segregants of the ccd and parDE recombinants.This...
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