Tài liệu Báo cáo khoa học: "ON THE REPRESENTATION OF QUERY TERM RELATIONS BY SOFT BOOLEAN oPERATORS" ppt

... purposes, the use of term rela- tions that is theoretically possible in the proba- bilistic and language-based retrieval models is 120 ON THE REPRESENTATION OF QUERY TERM RELATIONS BY SOFT BOOLEAN ... be used. The results of Table I show that for the CACM queries the best overall policy is a complete softening of the Boolean operators down to...

Ngày tải lên: 22/02/2014, 09:20

... program EXEL 98 (Microsoft Inc.). Propionyl-CoA synthetase. Propion yl-CoA synthetase activity was determined by the same method as described for the determination of a cetyl-CoA synthetase activity, except ... branch of the pentose phosphate pathway. This was determined by the use of glucose-6-phosphate as the substrate and NADP as the hydrogen acceptor. Due to the us...

Ngày tải lên: 19/02/2014, 16:20

... different types of part- whole relations. The types of part-whole relations instantiated by the tuples could then be determined based on their ontological classes. Separate sets of 20 tuples, with ... were discarded. The precision of the tuples discovered by the different seed-sets in the last iteration of our algorithm are in Table 3. These results reveal that t...

Ngày tải lên: 20/02/2014, 04:20

... PoS tags and by the need to balance depth of analysis against the size of the deriva- tion space. On the Susanne corpus, the geometric mean of the number of analyses for a sentence of length n ... fifth of DepBank is held out to optimize the speed and accuracy of the three systems. They conclude from the results of these experiments that the cut-down XLE p...

Ngày tải lên: 20/02/2014, 12:20

... checks whether required components of the definition of the class are also present in the description of the instance. This also permits easy representation of modifications to the definition, ... truth either may be inferred or else is irrelevant to the matching process. The transformation is performed by means of a process of ~ inmtRntlat~nn OF the def...

Ngày tải lên: 21/02/2014, 20:20

... way. The two readings of (7) do not differ in the relative scope order of two quantifiers. Rather, the difference is that on the narrow scope reading, the discourse referent introduced by a ... relates the pronoun ~ and its antecedent cz indirectly, by making refe- rence to the quantifier term 7 which even- tually contains the discourse referent of the an...

Ngày tải lên: 22/02/2014, 10:20

... matrix, the transmembrane helix and the following  20 residues) is crucial to determin- ing the aggregation state of these proteins. The data therefore support the hypothesis that this N-terminal region ... function of the CXXXC motif of human Sco proteins could therefore be impli- cated not only in the maturation of the Cu A site of Cox2 but also in the maintenan...

Ngày tải lên: 14/02/2014, 18:20

... observe the stimulation of glucuronate formation by xenobiot- ics in cell-free systems is an important step towards the identification of the detailed mechanisms by which these compounds act and of the ... indicated, the assay was initiated by the addition of the enzyme preparation to an otherwise complete assay mixture. The reaction was stopped after 0–30 min by...

Ngày tải lên: 19/02/2014, 07:20

... translation of A p the translation of A h the leftmost word of the translation of A the rightmost word of the translation of A Table 2: Features adopted in the argument reordering model. Reordering ... on the target side; 2) the predicate is not translated at all; and 3) the ARG1 argument is not moved to the left side of the predicate after translation. All...

Ngày tải lên: 19/02/2014, 19:20

... that the first iteration of EM reinforces the systematic mis- takes of the supervised initializer. In the first E-step, the posterior counts that are computed summarize the predictions of the supervised ... system. If these match the empirical counts, then the M-step does not change the parameters. But if the supervised system predicts too many JJs, for example, then...

Ngày tải lên: 20/02/2014, 09:20