| Records |
Author  |
Paula Fritzsche; C.Roig; Ana Ripoll; Emilio Luque; Aura Hernandez-Sabate |
| Title |
A Performance Prediction Methodology for Data-dependent Parallel Applications |
Type |
Conference Article |
| Year |
2006 |
Publication |
Proceedings of the IEEE International Conference on Cluster Computing |
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| Volume |
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Issue |
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Pages |
1-8 |
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| Abstract |
The increase in the use of parallel distributed architectures in order to solve large-scale scientific problems has generated the need for performance prediction for both deterministic applications and non-deterministic applications. In particular, the performance prediction of data dependent programs is an extremely challenging problem because for a specific issue the input datasets may cause different execution times. Generally, a parallel application is characterized as a collection of tasks and their interrelations. If the application is time-critical it is not enough to work with only one value per task, and consequently knowledge of the distribution of task execution times is crucial. The development of a new prediction methodology to estimate the performance of data-dependent parallel applications is the primary target of this study. This approach makes it possible to evaluate the parallel performance of an application without the need of implementation. A real data-dependent arterial structure detection application model is used to apply the methodology proposed. The predicted times obtained using the new methodology for genuine datasets are compared with predicted times that arise from using only one execution value per task. Finally, the experimental study shows that the new methodology generates more precise predictions. |
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IAM |
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no |
| Call Number |
IAM @ iam @ FRR2006 |
Serial |
1497 |
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| Author |
Panagiota Spyridonos; Fernando Vilariño; Jordi Vitria; Fernando Azpiroz; Petia Radeva |
| Title |
Anisotropic Feature Extraction from Endoluminal Images for Detection of Intestinal Contractions |
Type |
Book Chapter |
| Year |
2006 |
Publication |
9th International Conference on Medical Image Computing and Computer–Assisted Intervention |
Abbreviated Journal |
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| Volume |
4191 |
Issue |
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Pages |
161–168 |
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| Abstract |
Wireless endoscopy is a very recent and at the same time unique technique allowing to visualize and study the occurrence of con- tractions and to analyze the intestine motility. Feature extraction is es- sential for getting efficient patterns to detect contractions in wireless video endoscopy of small intestine. We propose a novel method based on anisotropic image filtering and efficient statistical classification of con- traction features. In particular, we apply the image gradient tensor for mining informative skeletons from the original image and a sequence of descriptors for capturing the characteristic pattern of contractions. Fea- tures extracted from the endoluminal images were evaluated in terms of their discriminatory ability in correct classifying images as either belong- ing to contractions or not. Classification was performed by means of a support vector machine classifier with a radial basis function kernel. Our classification rates gave sensitivity of the order of 90.84% and specificity of the order of 94.43% respectively. These preliminary results highlight the high efficiency of the selected descriptors and support the feasibility of the proposed method in assisting the automatic detection and analysis of contractions. |
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Copenhagen (Denmark) |
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Springer Verlag |
Place of Publication |
Berlin Heidelberg |
Editor |
R. Larsen, M. Nielsen, and J. Sporring |
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LNCS |
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800 |
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Conference |
MICCAI06 |
| Notes |
MV;OR;MILAB;SIAI |
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no |
| Call Number |
BCNPCL @ bcnpcl @ SVV2006; IAM @ iam @ SVV2006 |
Serial |
725 |
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| Author |
Oriol Rodriguez-Leor; J. Mauri; Eduard Fernandez-Nofrerias; Vicente de Valle; E. Garcia; A. Barrios; Debora Gil; Petia Radeva |
| Title |
Analysis of the changes in angiography local grey-level values to determine myocardial perfusion |
Type |
Conference Article |
| Year |
2006 |
Publication |
World Congress of Cardiology |
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Pages |
862 |
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Barcelona (Spain) |
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IAM;MILAB |
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IAM @ iam @ RMF2006 |
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1644 |
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| Author |
Oriol Rodriguez-Leor; Eduard Fernandez-Nofrerias; J. Mauri; Vicente del Valle; Debora Gil; A.Barrios; E.Garcia; Petia Radeva |
| Title |
Perfusion ratio: A new tool to objectively assess microcirculation perfusion after primary Percutaneous Coronary Intervention |
Type |
Conference Article |
| Year |
2006 |
Publication |
World Congress of Cardiology |
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Pages |
859 |
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Barcelona (Spain) |
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IAM;MILAB |
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no |
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IAM @ iam @ RFM2006c |
Serial |
1643 |
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| Author |
Oriol Rodriguez-Leor; Debora Gil; Eduard Fernandez-Nofrerias |
| Title |
Analisis en los cambios en el nivel de gris en las secuencias angiograficas mediante descriptores estadisticos para determinar la perfusion miocardica |
Type |
Journal Article |
| Year |
2006 |
Publication |
Revista Española de Cardiología |
Abbreviated Journal |
REC |
| Volume |
59 Supl 2-166 |
Issue |
2 |
Pages |
128 |
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IAM; |
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no |
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IAM @ iam @ RGF2006 |
Serial |
1640 |
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| Author |
Oriol Ramos Terrades; Salvatore Tabbone; Ernest Valveny |
| Title |
Combination of shape descriptors using an adaptation of boosting |
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Miscellaneous |
| Year |
2006 |
Publication |
18th International Conference on Pattern Recognition (ICPR´06), 2: 764–767 |
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Hong Kong |
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DAG |
Approved |
no |
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DAG @ dag @ RTV2006 |
Serial |
718 |
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| Author |
Oriol Ramos Terrades; Ernest Valveny |
| Title |
A new use of the ridgelets transform for describing linear singularities in images |
Type |
Journal Article |
| Year |
2006 |
Publication |
Pattern Recognition Letters |
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PRL |
| Volume |
27 |
Issue |
6 |
Pages |
587–596 |
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DAG |
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no |
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DAG @ dag @ RaV2006a |
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635 |
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| Author |
Oriol Ramos Terrades |
| Title |
Linear Combination of Multiresolution Descriptors: Application to Graphics Recognition |
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Book Whole |
| Year |
2006 |
Publication |
PhD Thesis, Universitat Autonoma de Barcelona-CVC & Universite Nancy 2 |
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Ph.D. thesis |
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Salvatore Antoine Tabbone;Ernest Valveny |
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DAG |
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no |
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DAG @ dag @ Ram2006 |
Serial |
713 |
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| Author |
Oriol Pujol; Petia Radeva; Jordi Vitria |
| Title |
Discriminant ECOC: A Heuristic Method for Application Dependent Design of Error Correcting Output Codes |
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Journal |
| Year |
2006 |
Publication |
IEEE Transactions on Pattern Analysis and Machine Intelligence, 28(6): 1007–1012 |
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OR;MILAB;HuPBA;MV |
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no |
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BCNPCL @ bcnpcl @ PRV2006a |
Serial |
646 |
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Oriol Pujol; Petia Radeva |
| Title |
Optimal extension of Error Correcting Output Codes |
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Miscellaneous |
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2006 |
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Perpignan (France) |
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MILAB;HuPBA |
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no |
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BCNPCL @ bcnpcl @ EPR2006d |
Serial |
695 |
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| Author |
N. Zakaria; Jean-Marc Ogier; Josep Llados |
| Title |
The Fuzzy-Spatial Descriptor for the Online Graphic Recognition: Overlapping Matrix Algorithm |
Type |
Book Chapter |
| Year |
2006 |
Publication |
7th International Workshop, Document Analysis Systems VII (DAS´06), LNCS 3872: 616–627 |
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Nelson (New Zealand) |
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DAG |
Approved |
no |
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DAG @ dag @ ZOL2006 |
Serial |
629 |
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| Author |
Miquel Ferrer; Ernest Valveny; F. Serratosa |
| Title |
Spectral Median Graphs Applied to Graphical Symbol Recognition |
Type |
Book Chapter |
| Year |
2006 |
Publication |
11th Iberoamerican Congress on Pattern Recognition (CIARP´06), J.P. Martinez–Trinidad et al. (Eds.), LNCS 4225: 774–783 |
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Cancun (Mexico) |
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DAG |
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no |
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DAG @ dag @ FVS2006b |
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698 |
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| Author |
Miquel Ferrer |
| Title |
Spectral Median Graphs and its Application to Graphical Symbol Recognition |
Type |
Report |
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2006 |
Publication |
CVC Technical Report #95 |
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CVC (UAB) |
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no |
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Admin @ si @ Fer2006 |
Serial |
670 |
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| Author |
Mikhail Mozerov; V. Kober; I.A. Ovseyevich |
| Title |
A Stereo Matching Algorithm with Global Smoothness Criterion |
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Miscellaneous |
| Year |
2006 |
Publication |
Topical Meeting on Optoinformatics / Information Photonics, 133–135 |
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Saint-Petersburg (Russia) |
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ISE |
Approved |
no |
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ISE @ ise @ MKO2006 |
Serial |
675 |
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| Author |
Mikhail Mozerov; V. Kober |
| Title |
Impulse Noise Removal with Gradient Adaptive Neighborhoods |
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Journal |
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2006 |
Publication |
Optical Engineering, 45: 67003 |
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ISE |
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no |
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ISE @ ise @ MoK2006 |
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676 |
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