calibrating the decision threshold of probabilistic models

... makes them either supervised or unsupervised algorithms. The purpose of this paper is an analysis of the underlying probabilistic models and the types of errors committed by each one. Furthermore, ... values the iso- metrics are moving further to the top-right corner of the plot. For a threshold of h = 0.50 (marked by ‘✸’) PROMODES-H has a better performance than PROMODES. Nevertheless, across the ... that the threshold which yields the best f-measure result on the validation set returns almost the same result on the separate test set for both algorithms which suggests the existence of a general...

Ngày tải lên: 20/02/2014, 04:20

... be the integration of hardware and software, a specific piece of hardware, a specific segment of the system’s software, a group of people, facilities, or a combination of all of these. As with the ... mental model but due to the imprecise nature of natural language they often feel that they can agree with each other at the end of a conversation even though their models of reality are quite different. SIDEBAR ... enhance the cost-effectiveness of the system in the eyes of the stakeholders. The functional and physical architectures are developed in parallel to enhance the integration of them into the allocated...

Ngày tải lên: 03/04/2014, 12:22

... Criterion (AIC). The remainder of this subsection describes the model building process, including justifications for the choice of models. The first part focuses on the trend models, while the second ... London. The first subsection describes the data that are used in this case study, the second discusses the choice of statistical models, while the third presents the results. 5.1 Description of the ... in the final models. In the likelihood analysis, the variance parameter is chosen by optimising the AIC. 5.3 Results The models contain a large number of parameters, so to aid convergence the...

Ngày tải lên: 17/02/2014, 10:20

... vis-a ` -vis the TSR the ory . On the other h and, intractability of h igh-energy intermediates such as ferryl precludes facile experimental proof of the Ôtwo- stateÕ proposal owing to l ack of a ppropriate ... intermediate [11]. The sum of these findings points at the involvement of more than one active oxidant in the diverse types of P450-catalyzed substrate processing [12–15]. The g oal of t he p resent ... small alterations in the environment can cause drastic changes in the reactivity of the active species [76]. Further support in favour of th e idea of the involve- ment of a high-valent iron-oxene...

Ngày tải lên: 19/02/2014, 16:20

... producing the 25-best list for the reranker. The log figure of merit is the sum of the log language model probability and the log channel model probability plus 1.5 times the number of edits in the ... features indicating the probabilities of the underlying fluent sentences under the lan- guage models, as discussed in the previous sec- tion. 2. NCLogP: The Log Probability of the entire noisy channel ... flags: when the word is not part of a dis- fluency or E when it is part of the reparandum or I when it is part of the interregnum. 1. CopyFlags X Y: When there is an exact copy in the input text of length...

Ngày tải lên: 20/02/2014, 04:20

... bold). The heading designates the type of load parameter varied and the range of variation relative to the normal value of the reference state. The last four columns show the percentage of the total ... of the energetic status of the cell [22]. Under conditions of enhanced utilization or atten- uated synthesis of ATP or GTP, the concentrations of the related monophosphates increase, due to the ... in the consumption of ATP and glutathione (GSH), the two cardinal meta- bolites that mainly determine the integrity of the cell. The goodness of these simplified models was evaluated by using the...

Ngày tải lên: 23/03/2014, 06:20

... in the development set. 5.1 Using Bayesian decision framework We compare the performance of the Bayesian decision framework to the use of likelihood only P(X|B) as shown in Figure 5. The ... these distributions. We also assume that the probability of seeing a lexical chain start / end at a particular instance is independent of the starts / ends of other chains. As a result, the ... Statistical Models of Lexical Chain Features Wai-Kit Lo Wenying Xiong Helen Meng The Chinese University The Chinese University The Chinese University of Hong Kong, of Hong Kong, of Hong Kong,...

Ngày tải lên: 23/03/2014, 17:20

... *Significant at the 0.001 level. Variable Tests A test to determine the overall discriminating power of the model is the F-value which is the ratio of the sums -of- squares between-groups to the within-groups ... that the most serious change in the majority of these ratios occurred between the third and the second years prior to bankruptcy. The degree of seriousness is measured by the yearly change in the ... of admittedly below-average performance. The t-test for the significance of the result is 5=4.8; significant at the 0.001 level. Another interesting facet of this test is the relationship of...

Ngày tải lên: 23/03/2014, 17:44

... in order to verify whether there was any pH dependence of the E p of sulfonephthaleins, and, if any, whether it proceeded in the same direction as the pH dependence of the sulfonephtha- lein ... modest model of the phenolic subunits of lignin. Nevertheless, the new biogenic hypotheses that ascribe the reported ligninolytic activity of some fungi to the laccase- catalyzed formation of phenoxy ... investigated the kinetics of oxidation of phenol red by Poliporus pinsitus laccase in the absence of any mediator, and then evaluated the ability of phenol red to act as a laccase mediator in the oxidation...

Ngày tải lên: 23/03/2014, 21:20

Ngày tải lên: 19/06/2014, 08:20

Ngày tải lên: 20/06/2014, 16:20

Ngày tải lên: 21/06/2014, 02:20

Ngày tải lên: 11/08/2012, 21:54

... parts: the topic and the controlling idea. - The topic sentence is the subject of the paragraph. Eg: The color yellow is the color of mental activity. The topic: the color yellow - The controlling ... write the thesis. This part includes the aims, scopes, methods and design of the study. Part B is the main part of the study that consists of three chapters below • Chapter I focuses on the theories ... structure, the sub-title, and the discourse of the news story. From which, I would like to draw some difficulties of Vietnamese readers when they translate the news story. To sum up, the scope of the...

Ngày tải lên: 02/09/2012, 11:12