comparison of reconstruction algorithms for digital breast tomosynthesis

... performance of four alternative track-before- detect algorithms has been investigated for a range of target SNR values and speeds. For most of the scenarios the differ- ence in detection performance ... of detection for that SNR. The false track performance at the SNR values of interest is shown in Tab l e 2. The false track performance of the PDAF-AI is clearly unac- ceptable below 12 dB. For ... history was included. At 3 dB, all of the algorithms showed degraded detec- tion performance and found less than half of the targets. Again, the H-PMHT performed poorly for high speed tar- gets. It...

Ngày tải lên: 22/06/2014, 19:20

... information in the probability distributions of words for each class. For example, if the word “pro- fessor” is the most likely word for faculty home pages, it will have a large probability for ... Bayes-optimal estimates for these parameters from a set of labeled training data. Here, the estimate of the probability of word w t in class c j is: 2 Many previous formalizations of the multinomial ... of the classification tasks from Reuters. Multinomial event models do an average of 4.8% points better. This domain tends to require smaller vocabular- ies for best performance. See Figure 6 for...

Ngày tải lên: 16/03/2014, 19:20

... based on information that is not immediately apparent from the data. For example, in the evaluation of the importance of re-cycling of STAT5 [9–11], a pri- mary argument for the importance of this ... data alone. After that, we review methods for comparison of the predictive ability of two models, and finally sug- gest a scheme for the general comparison of two or more models. In the subsequent ... 23, 2747–2753. Supporting information The following supplementary material is available: Doc. S1. Simulation files used for the calculations in the examples. Doc. S2. Summary of standard formulae for model comparison, ...

Ngày tải lên: 23/03/2014, 06:20

... gen- eration of basic Stanford dependencies (for constituent parsers) and part -of- speech tagging (for dependency parsers). 3 Results Table 3 tabulates efficiency and performance for all parsers; ... Proceedings of the fourth SIGHAN bakeoff. Fei Wu and Daniel S. Weld. 2010. Open information extraction using Wikipedia. In Proceedings of the 48th Annual Meet- ing of the Association for Computational ... Proceedings of the 50th Annual Meeting of the Association for Computational Linguistics, pages 11–16, Jeju, Republic of Korea, 8-14 July 2012. c 2012 Association for Computational Linguistics A Comparison...

Ngày tải lên: 23/03/2014, 14:20

... the document. From a linguistic point of view, a document is made up of words, and the semantics of the doc- ument is determined by the meaning of the words and the linguistic structure of the document. The Naive ... respect to the amount of information it captures about the 307 3.2 Feature Selection in the Multinomial  used feature ranking functions of the form in (10): Model Mutual information as in (9) ... parame- ters of c 3 with distribution P(d i lc 3 ; 0). The likeli- hood of a document is given by the total probabil- ity 0) = E p(e i j=1 Of course, the true parameters 0 of the mixture model...

Ngày tải lên: 31/03/2014, 20:20

... m-component of the I's of / contains two or more m-components of the Ts of T{I) (i.e., no m-component of the I's of / is split by T). FC2. Every m-component of the Ts of / ... n-components of the O's of / (i.e., no two n-components of the O's of / are merged by T). BC4. Every n-component of the O's of T{I) contains an n-component of the O's of / (i.e., ... image transformation of A preserves foreground connectivity for the input image I. Proof. Let T be A's cyclic image transformation. Suppose T does not preserve foreground connectivity ...

Ngày tải lên: 05/06/2014, 11:59

... coded as 0 for homozygote of the major allele, 1 for heterozygote, and 2 for homozygote of the minor allele, respectively. Classification algorithms In this study, we used three families of classification ... decision tree, as a basis for comparisons. These classifiers were per- formed using the Waikato Environment for Knowledge Analysis (WEKA) software [19]. First, naive Bayes is the simplest form of Bayesian ... BioMed Central Page 1 of 8 (page number not for citation purposes) Journal of Translational Medicine Open Access Research A comparison of classification methods for predicting Chronic Fatigue...

Ngày tải lên: 18/06/2014, 15:20

... Department of Laboratory Medicine, University of Washington, Seattle, WA, USA, 2 Department of Microbiology, University of Washington, Seattle, WA, USA, 3 Department of Pathobiology, University of ... 4 Department of Biostatistics, University of Washington, Seattle, WA, USA, 5 Department of Medicine, University of Washington, Seattle, WA, USA, 6 Department of Pediatrics, University of Washington, ... a trend for increased HMR for Taq amplified HALT-C samples as well as for HMR and complexity scores for HCV/HIV co- infected samples. Based on the current results, it would Comparison of quasipecies...

Ngày tải lên: 19/06/2014, 08:20

... Half of the summation of PCSA values for non-primary flexors was added to each of the two primary flexors while a third of the summation of PCSA values for non- primary extensors ... networks forestimationofthumb-tipforcesunderfourdifferent configurations. In another study, performance of a Hill- based physiological muscle model was compared to a neural network for estimation of forearm ... witnessed for forces of up to 30% of the maximum isometric force [33]. These non- linear relationships can be associated with exponential increases in firing rate of motor units as muscle forces increase...

Ngày tải lên: 19/06/2014, 08:20

... parameter r oft en plays an important role in the perfor- mance of the reconstruction algorithms. Hence, we believe it is a fair comparison of al gorithms only if each reaches same level of OSR. ... formulation of the reconstruction problem was proposed by Lazar and co-workers [4] to i ncrease the speed of the reconstruction algorithm. In both recon- struction algorithms, the inversion of ... tolerance level of the other two methods to a low value to boost the low noise performance, their performance would be much worse at high noise level, as shown in F igure 5c (for example the performance of...

Ngày tải lên: 21/06/2014, 03:20

... Stanford University, Stanford, Calif. At Stanfor d, he developed image processing algorithms for the Programmable Digital Camera project. He also consulted for industry in the ar- eas of digital ... Based on these basic reconstruction models, researchers have de- veloped algorithms with a joint formulation of reconstruc- tion and registration [19–22], and other algorithms for mul- tispectral ... additional information from each LR image. Generally, SR techniques can be divided into two classes of algorithms, namely, f requency domain algorithms and spa- tial domain algorithms. Most of the...

Ngày tải lên: 22/06/2014, 19:20

... 10.1155/ASP/2006/87298 Use of Genetic Algorithms for Contrast and Entropy Optimization in ISAR Autofocusing Marco Martorella, Fabrizio Berizzi, and Silvia Bruscoli Department of Information Engineering, University of ... image entropy. In this paper a solution of this problem is proposed by using genetic algorithms. The performances of the new algorithms that make use of genetic algorithms overcome the problem with ... ineering (EEE) of the University of Adelaide under a postdoctoral contract, and the Department of Information Tech- nology and Electrical Engineering (ITEE) of the University of Queensland as...

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Ngày tải lên: 14/08/2014, 13:21

... Applications exists for each x, y ∈ SE; ii a uniformly G ˆ ateaux differentiable norm, if for each y in SE, the limit 2.2 is uniformly attained for x ∈ SE; iii aFr ´ echet differentiable norm,iffor each ... 2.2 is attained uniformly for y ∈ SE; iv a uniformly Fr ´ echet differentiable norm we also say that E is uniformly smooth, if the limit 2.2 is attained uniformly for x, y SE ì SE. A ... pages doi:10.1155/2009/824374 Research Article Convergence Comparison of Several Iteration Algorithms for the Common Fixed Point Problems Yisheng Song and Xiao Liu College of Mathematics and Information Science, Henan Normal...

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