calibrating the decision threshold of probabilistic models
Tài liệu Báo cáo khoa học: "Enhanced word decomposition by calibrating the decision threshold of probabilistic models and using a model ensemble" pdf
Ngày tải lên :
20/02/2014, 04:20
... 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...
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buede - the engineering design of systems - models and methods 2e (wiley, 2009)
Ngày tải lên :
03/04/2014, 12:22
... 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...
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Tài liệu Modelling the e®ects of air pollution on health using Bayesian Dynamic Generalised Linear Models pdf
Ngày tải lên :
17/02/2014, 10:20
... 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...
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Tài liệu Báo cáo khoa học: Models and mechanisms of O-O bond activation by cytochrome P450 A critical assessment of the potential role of multiple active intermediates in oxidative catalysis doc
Ngày tải lên :
19/02/2014, 16:20
... 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...
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Tài liệu Báo cáo khoa học: "The impact of language models and loss functions on repair disfluency detection" pptx
Ngày tải lên :
20/02/2014, 04:20
... 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...
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Báo cáo khoa học: Kinetic hybrid models composed of mechanistic and simplified enzymatic rate laws – a promising method for speeding up the kinetic modelling of complex metabolic networks pptx
Ngày tải lên :
23/03/2014, 06:20
... 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...
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Báo cáo khoa học: "Automatic Story Segmentation using a Bayesian Decision Framework for Statistical Models of Lexical Chain Features" pdf
Ngày tải lên :
23/03/2014, 17:20
... 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,...
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PREDICTING FINANCIAL DISTRESS OF COMPANIES: REVISITING THE Z-SCORE AND ZETA® MODELS
Ngày tải lên :
23/03/2014, 17:44
...
*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...
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Báo cáo khoa học: First evidence of catalytic mediation by phenolic compounds in the laccase-induced oxidation of lignin models ppt
Ngày tải lên :
23/03/2014, 21:20
... 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...
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A STUDY ON THE STRUCTURAL FEATUES OF ENGLISH NEWS STORY.DOC
Ngày tải lên :
02/09/2012, 11:12
... 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...
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