Tài liệu Báo cáo khoa học: "Analyzing the Errors of Unsupervised Learning" docx

... 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 ... but these methods must still deal with the four types of errors we have identified in this paper. One of our main contributions of this pa- per is the idea of...

Ngày tải lên: 20/02/2014, 09:20

... 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 maintenance of cellular copper homeostasis. The ... Blackburn NJ (2011) The essential role of the Cu(II) state of Sco in the maturation of the Cu(A) center of cytochrome oxi- dase: evidence from H135Met and H1...

Ngày tải lên: 14/02/2014, 18:20

... concentrations of CoASH. Both the heated liver extract and CoASH also restored (in the presence of ATP-Mg) the sensitivity to metyrapone and other xenobiotics and it is likely that the effect of the heated ... oriented towards the lumen of the vesicles and that disruption of the vesicular membrane increases accessibility to UDP-glucuronate. Some of the detergents...

Ngày tải lên: 19/02/2014, 07:20

... for the initial decrease of the oxalo- acetate concentration in t he equilibrium due to the accumulation of NADH [25]. Lineweaver–Burk diagrams were obtained b y use of the worksheet of the program EXEL 98 ... propionyl-CoA in the DmcsA-strain, the activity of methylisocitrate lyase is twice as high than that of the wild-type. The addition of acetate to these m...

Ngày tải lên: 19/02/2014, 16:20

... 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 of these 3 errors are avoided in the ... 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...

Ngày tải lên: 19/02/2014, 19:20

... after each round of the mining process. The second layer consists of the extractor, the filter, the classifiers and the readability evaluator, which are applied sequentially. The extractor scans the raw ... layers. The first layer consists of the crawler and the raw web page storage. The crawler periodically downloads two kinds of web pages, which are put into th...

Ngày tải lên: 20/02/2014, 05:20

... “O”, which indicates a non-named entity. For 98.0% of the named entities in the training data of the shared task in the 2004 JNLPBA, the label of the preced- ing entity was “O”. In order to incorporate ... of semi-CRFs Since the purpose of the filtering is to reduce the computational cost, rather than to achieve a good F-score by itself, we chose the threshold pro...

Ngày tải lên: 20/02/2014, 12:20

... 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 is 1.31 n . The ... 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 XL...

Ngày tải lên: 20/02/2014, 12:20

... investigated the effect of adding the LA Times data to the total mix of Penn’s WSJ and NANC’s WSJ. Table 4 shows the results of this experiment, where the baseline of 0 sentences thus starts with the ... consists of the computation of the shortest derivations and the extraction of subtrees, UML- DOP involves iterative training of the parameters. Once...

Ngày tải lên: 20/02/2014, 12:20

... now consider how the substitutability of con- nectives affects our expectations of the value of V . If two connectives are SYNONYMS then each can always be used in place of other. Thus we would always ... q(x) = 0. these results demonstrate a three way correspon- dence between the human ratings of the similar- ity of a pair of connectives, their substitutabil- ity relati...

Ngày tải lên: 20/02/2014, 15:20