Slide
Centre Interdisciplinaire
de Recherche et d’Innovation
en Cybersécurité et Société
de Recherche et d’Innovation
en Cybersécurité et Société
1.
Papapanagiotou, P.; Manataki, A.; Davoust, A.; Kleek, M. Van; Robertson, D.; Murray-Rust, D.; Shadbolt, N.
Social machines for all: Blue sky ideas track Proceedings Article
In: Proceedings of the International Joint Conference on Autonomous Agents and Multiagent Systems, AAMAS, pp. 1208–1212, International Foundation for Autonomous Agents and Multiagent Systems (IFAAMAS), 2018, ISBN: 978-1-5108-6808-3, (ISSN: 15488403).
Abstract | Links | BibTeX | Tags: Agent based simulation, Analysis, Autonomous agents, Design, Development method, Distributed agents, Distributed computer systems, Easy-to-use systems, Economic and social effects, Electronic institutions, Intelligent agents, Model driven development, Model-driven Engineering, Models, Multi agent systems, Systems analysis
@inproceedings{papapanagiotou_social_2018,
title = {Social machines for all: Blue sky ideas track},
author = {P. Papapanagiotou and A. Manataki and A. Davoust and M. Van Kleek and D. Robertson and D. Murray-Rust and N. Shadbolt},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85054668594&partnerID=40&md5=77eba348dbafa30aef9d016186b46804},
isbn = {978-1-5108-6808-3},
year = {2018},
date = {2018-01-01},
booktitle = {Proceedings of the International Joint Conference on Autonomous Agents and Multiagent Systems, AAMAS},
volume = {2},
pages = {1208–1212},
publisher = {International Foundation for Autonomous Agents and Multiagent Systems (IFAAMAS)},
abstract = {In today's interconnected world, people interact to a unprecedented degree through the use of digital platforms and services, forming complex 'social machines'. These are now homes to autonomous agents as well as people, providing an open space where human and computational intelligence can mingle-a new frontier for distributed agent systems. However, participants typically have limited autonomy to define and shape the machines they are part of. In this paper, we envision a future where individuals are able to develop their own Social Machines, enabling them to interact in a trustworthy, decentralized way. To make this possible, development methods and tools must see their barriers-to-entry dramatically lowered. People should be able to specify the agent roles and inte-raction patterns in an intuitive, visual way, analyse and test their designs and deploy them as easy to use systems. We argue that this is a challenging but realistic goal, which should be tackled by navigating the trade-off between the accessibility of the design methods -primarily the modelling formalisms- And their expressive power. We support our arguments by drawing ideas from different research areas including electronic institutions, agent-based simulation, process modelling, formal verification, and model-driven engineering. © 2018 International Foundation for Autonomous Agents and Multiagent Systems (www.ifaamas.org). All rights reserved.},
note = {ISSN: 15488403},
keywords = {Agent based simulation, Analysis, Autonomous agents, Design, Development method, Distributed agents, Distributed computer systems, Easy-to-use systems, Economic and social effects, Electronic institutions, Intelligent agents, Model driven development, Model-driven Engineering, Models, Multi agent systems, Systems analysis},
pubstate = {published},
tppubtype = {inproceedings}
}
In today's interconnected world, people interact to a unprecedented degree through the use of digital platforms and services, forming complex 'social machines'. These are now homes to autonomous agents as well as people, providing an open space where human and computational intelligence can mingle-a new frontier for distributed agent systems. However, participants typically have limited autonomy to define and shape the machines they are part of. In this paper, we envision a future where individuals are able to develop their own Social Machines, enabling them to interact in a trustworthy, decentralized way. To make this possible, development methods and tools must see their barriers-to-entry dramatically lowered. People should be able to specify the agent roles and inte-raction patterns in an intuitive, visual way, analyse and test their designs and deploy them as easy to use systems. We argue that this is a challenging but realistic goal, which should be tackled by navigating the trade-off between the accessibility of the design methods -primarily the modelling formalisms- And their expressive power. We support our arguments by drawing ideas from different research areas including electronic institutions, agent-based simulation, process modelling, formal verification, and model-driven engineering. © 2018 International Foundation for Autonomous Agents and Multiagent Systems (www.ifaamas.org). All rights reserved.
2.
Allili, M. S.
Wavelet modeling using finite mixtures of generalized Gaussian distributions: Application to texture discrimination and retrieval Journal Article
In: IEEE Transactions on Image Processing, vol. 21, no. 4, pp. 1452–1464, 2012, ISSN: 10577149.
Abstract | Links | BibTeX | Tags: algorithm, Algorithms, article, Automated, automated pattern recognition, computer assisted diagnosis, Computer Simulation, Computer-Assisted, Data Interpretation, Finite mixtures, Generalized Gaussian, Generalized Gaussian Distributions, Image Enhancement, Image Interpretation, Image segmentation, Imaging, Kullback Leibler divergence, Marginal distribution, methodology, Mixtures, Models, Monte Carlo methods, Monte Carlo sampling, Normal Distribution, Pattern Recognition, Performance improvements, reproducibility, Reproducibility of Results, Sensitivity and Specificity, Similarity measure, State-of-the-art approach, Statistical, statistical analysis, statistical model, Texture data set, Texture discrimination, Texture modeling, Textures, three dimensional imaging, Three-Dimensional, Wavelet Analysis, Wavelet coefficients, Wavelet decomposition, Wavelet modeling
@article{allili_wavelet_2012,
title = {Wavelet modeling using finite mixtures of generalized Gaussian distributions: Application to texture discrimination and retrieval},
author = {M. S. Allili},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84859096106&doi=10.1109%2fTIP.2011.2170701&partnerID=40&md5=0420facdc04978ad84bea3126bc1183a},
doi = {10.1109/TIP.2011.2170701},
issn = {10577149},
year = {2012},
date = {2012-01-01},
journal = {IEEE Transactions on Image Processing},
volume = {21},
number = {4},
pages = {1452–1464},
abstract = {This paper addresses statistical-based texture modeling using wavelets. We propose a new approach to represent the marginal distribution of the wavelet coefficients using finite mixtures of generalized Gaussian (MoGG) distributions. The MoGG captures a wide range of histogram shapes, which provides better description and discrimination of texture than using single probability density functions (pdf's), as proposed by recent state-of-the-art approaches. Moreover, we propose a model similarity measure based on Kullback-Leibler divergence (KLD) approximation using Monte Carlo sampling methods. Through experiments on two popular texture data sets, we show that our approach yields significant performance improvements for texture discrimination and retrieval, as compared with recent methods of statistical-based wavelet modeling. © 2011 IEEE.},
keywords = {algorithm, Algorithms, article, Automated, automated pattern recognition, computer assisted diagnosis, Computer Simulation, Computer-Assisted, Data Interpretation, Finite mixtures, Generalized Gaussian, Generalized Gaussian Distributions, Image Enhancement, Image Interpretation, Image segmentation, Imaging, Kullback Leibler divergence, Marginal distribution, methodology, Mixtures, Models, Monte Carlo methods, Monte Carlo sampling, Normal Distribution, Pattern Recognition, Performance improvements, reproducibility, Reproducibility of Results, Sensitivity and Specificity, Similarity measure, State-of-the-art approach, Statistical, statistical analysis, statistical model, Texture data set, Texture discrimination, Texture modeling, Textures, three dimensional imaging, Three-Dimensional, Wavelet Analysis, Wavelet coefficients, Wavelet decomposition, Wavelet modeling},
pubstate = {published},
tppubtype = {article}
}
This paper addresses statistical-based texture modeling using wavelets. We propose a new approach to represent the marginal distribution of the wavelet coefficients using finite mixtures of generalized Gaussian (MoGG) distributions. The MoGG captures a wide range of histogram shapes, which provides better description and discrimination of texture than using single probability density functions (pdf's), as proposed by recent state-of-the-art approaches. Moreover, we propose a model similarity measure based on Kullback-Leibler divergence (KLD) approximation using Monte Carlo sampling methods. Through experiments on two popular texture data sets, we show that our approach yields significant performance improvements for texture discrimination and retrieval, as compared with recent methods of statistical-based wavelet modeling. © 2011 IEEE.
3.
Fiset, D.; Blais, C.; Arguin, M.; Tadros, K.; Éthier-Majcher, C.; Bub, D.; Gosselin, F.
The spatio-temporal dynamics of visual letter recognition Journal Article
In: Cognitive Neuropsychology, vol. 26, no. 1, pp. 23–35, 2009, ISSN: 02643294.
Abstract | Links | BibTeX | Tags: article, bootstrapping, Bubbles technique, Discrimination Learning, human, Humans, Image analysis, linear regression analysis, methodology, Models, Nonlinear Dynamics, nonlinear system, Pattern Recognition, Photic Stimulation, photostimulation, physiology, priority journal, Psychological, psychological model, reaction time, recognition, Recognition (Psychology), task performance, temporal summation, time, Time Factors, Visual, word recognition
@article{fiset_spatio-temporal_2009,
title = {The spatio-temporal dynamics of visual letter recognition},
author = {D. Fiset and C. Blais and M. Arguin and K. Tadros and C. Éthier-Majcher and D. Bub and F. Gosselin},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-67649525418&doi=10.1080%2f02643290802421160&partnerID=40&md5=bca7bda93d59994f2679faff9d93f46a},
doi = {10.1080/02643290802421160},
issn = {02643294},
year = {2009},
date = {2009-01-01},
journal = {Cognitive Neuropsychology},
volume = {26},
number = {1},
pages = {23–35},
abstract = {We applied the Bubbles technique to reveal directly the spatio-temporal features of uppercase Arial letter identification. We asked four normal readers to each identify 26,000 letters that were randomly sampled in space and time; afterwards, we performed multiple linear regressions on the participant's response accuracy and the space-time samples. We contend that each cluster of connected significant regression coefficients is a letter feature. To bridge the gap between the letter identification literature and this experiment, we also determined the relative importance of the features proposed in the letter identification literature. Results show clear modulations of the relative importance of the letter features of some letters across time, demonstrating that letter features are not always extracted simultaneously at constant speeds. Furthermore, of all the feature classes proposed in the literature, line terminations and horizontals appear to be the two most important for letter identification. © 2008 Psychology Press, an imprint of the Taylor & Francis Group.},
keywords = {article, bootstrapping, Bubbles technique, Discrimination Learning, human, Humans, Image analysis, linear regression analysis, methodology, Models, Nonlinear Dynamics, nonlinear system, Pattern Recognition, Photic Stimulation, photostimulation, physiology, priority journal, Psychological, psychological model, reaction time, recognition, Recognition (Psychology), task performance, temporal summation, time, Time Factors, Visual, word recognition},
pubstate = {published},
tppubtype = {article}
}
We applied the Bubbles technique to reveal directly the spatio-temporal features of uppercase Arial letter identification. We asked four normal readers to each identify 26,000 letters that were randomly sampled in space and time; afterwards, we performed multiple linear regressions on the participant's response accuracy and the space-time samples. We contend that each cluster of connected significant regression coefficients is a letter feature. To bridge the gap between the letter identification literature and this experiment, we also determined the relative importance of the features proposed in the letter identification literature. Results show clear modulations of the relative importance of the letter features of some letters across time, demonstrating that letter features are not always extracted simultaneously at constant speeds. Furthermore, of all the feature classes proposed in the literature, line terminations and horizontals appear to be the two most important for letter identification. © 2008 Psychology Press, an imprint of the Taylor & Francis Group.
4.
Warren, C. M.; Breuer, A. T.; Kantner, J.; Fiset, D.; Blais, C.; Masson, M. E. J.
Target-distractor interference in the attentional blink implicates the locus coeruleus-norepinephrine system Journal Article
In: Psychonomic Bulletin and Review, vol. 16, no. 6, pp. 1106–1111, 2009, ISSN: 10699384.
Abstract | Links | BibTeX | Tags: article, Attentional Blink, human, Humans, Learning, locus ceruleus, Locus Coeruleus, Memory, Models, noradrenalin, Norepinephrine, Pattern Recognition, perception, Perceptual Masking, physiology, Psychological, psychological model, Psychophysics, reaction time, Serial Learning, short term memory, Short-Term, Visual
@article{warren_target-distractor_2009,
title = {Target-distractor interference in the attentional blink implicates the locus coeruleus-norepinephrine system},
author = {C. M. Warren and A. T. Breuer and J. Kantner and D. Fiset and C. Blais and M. E. J. Masson},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-74849134787&doi=10.3758%2fPBR.16.6.1106&partnerID=40&md5=dedfbcb0f338038cbcaedefcbc9d184f},
doi = {10.3758/PBR.16.6.1106},
issn = {10699384},
year = {2009},
date = {2009-01-01},
journal = {Psychonomic Bulletin and Review},
volume = {16},
number = {6},
pages = {1106–1111},
abstract = {We provide evidence that the locus coeruleus-norephinephrine (LC-NE) system is the neurophysiological basis of the attentional blink. The attentional blink refers to decreased accuracy for reporting the second of two targets in a rapid serial visual presentation of distractors. The LC-NE account of the attentional blink posits that targets elicit a facilitative LC-NE system response that is available for the first target but subsequently unavailable to the second, due to the autoinhibitory nature of the LC-NE system. We propose a modification of the LC-NE account, suggesting that the LC-NE system response is elicited by interference between mutually exclusive responses demanded by temporally proximal targets and distractors. We increased the interference between the first target and the following distractor by reducing the time between them. For identifying the second target this high-interference condition yielded a benefit up to 200 msec after onset of the first, followed by a decrease in accuracy. Consistent with our modification of the LC-NE account, this result suggests a temporarily enhanced LC-NE system response to increased target-distractor interference. © 2009 The Psychonomic Society, Inc.},
keywords = {article, Attentional Blink, human, Humans, Learning, locus ceruleus, Locus Coeruleus, Memory, Models, noradrenalin, Norepinephrine, Pattern Recognition, perception, Perceptual Masking, physiology, Psychological, psychological model, Psychophysics, reaction time, Serial Learning, short term memory, Short-Term, Visual},
pubstate = {published},
tppubtype = {article}
}
We provide evidence that the locus coeruleus-norephinephrine (LC-NE) system is the neurophysiological basis of the attentional blink. The attentional blink refers to decreased accuracy for reporting the second of two targets in a rapid serial visual presentation of distractors. The LC-NE account of the attentional blink posits that targets elicit a facilitative LC-NE system response that is available for the first target but subsequently unavailable to the second, due to the autoinhibitory nature of the LC-NE system. We propose a modification of the LC-NE account, suggesting that the LC-NE system response is elicited by interference between mutually exclusive responses demanded by temporally proximal targets and distractors. We increased the interference between the first target and the following distractor by reducing the time between them. For identifying the second target this high-interference condition yielded a benefit up to 200 msec after onset of the first, followed by a decrease in accuracy. Consistent with our modification of the LC-NE account, this result suggests a temporarily enhanced LC-NE system response to increased target-distractor interference. © 2009 The Psychonomic Society, Inc.
5.
Bouchard, S.; Gauthier, J.; Nouwen, A.; Ivers, H.; Vallières, A.; Simard, S.; Fournier, T.
Temporal relationship between dysfunctional beliefs, self-efficacy and panic apprehension in the treatment of panic disorder with agoraphobia Journal Article
In: Journal of Behavior Therapy and Experimental Psychiatry, vol. 38, no. 3, pp. 275–292, 2007, ISSN: 00057916.
Abstract | Links | BibTeX | Tags: adult, agoraphobia, article, Aversive Therapy, behavior therapy, Circadian Rhythm, clinical article, cognition, Cognition Disorders, cognitive therapy, controlled study, Diagnostic and Statistical Manual of Mental Disorders, female, Health Status, human, Humans, Individuality, male, Medical Records, Models, panic, Panic Disorder, Psychiatric Status Rating Scales, Psychological, Self Concept, Self Efficacy, Sensation, Time Factors, treatment outcome
@article{bouchard_temporal_2007,
title = {Temporal relationship between dysfunctional beliefs, self-efficacy and panic apprehension in the treatment of panic disorder with agoraphobia},
author = {S. Bouchard and J. Gauthier and A. Nouwen and H. Ivers and A. Vallières and S. Simard and T. Fournier},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-34447561574&doi=10.1016%2fj.jbtep.2006.08.002&partnerID=40&md5=8f563e24b9c604c9a3b1361da1f84bf4},
doi = {10.1016/j.jbtep.2006.08.002},
issn = {00057916},
year = {2007},
date = {2007-01-01},
journal = {Journal of Behavior Therapy and Experimental Psychiatry},
volume = {38},
number = {3},
pages = {275–292},
abstract = {The aim of this study is to assess if changes in dysfunctional beliefs and self-efficacy precede changes in panic apprehension in the treatment of panic disorder with agoraphobia. Subjects participated in a larger study comparing the effectiveness of cognitive restructuring and exposure. Four variables were measured: (a) the strength of each subject's main belief toward the consequence of a panic attack; (b) perceived self-efficacy to control a panic attack in the presence of panicogenic body sensations; (c) perceived self-efficacy to control a panic attack in the presence of panicogenic thoughts; and (d) the level of panic apprehension of a panic attack. Variables were recorded daily on a "0" to "100" scale using category partitioning. Multivariate time series analysis and "causality testing" showed that, for all participants, cognitive changes preceded changes in the level of panic apprehension. Important individual differences were observed in the contribution of each variable to the prediction of change in panic apprehension. Changes in apprehension were preceded by changes in belief in three cases, by changes in self-efficacy in six cases, and by changes in both belief and self-efficacy in the remaining three cases. This pattern was observed in participants in the exposure condition as well as those in the cognitive restructuring condition. These results provide more empirical support to the hypothesis that cognitive changes precede improvement. They also underlie the importance of individual differences in the process of change. Finally, this study does not support the hypothesis that exposure and cognitive restructuring operate through different mechanisms, namely a behavioral one and a cognitive one. © 2006 Elsevier Ltd. All rights reserved.},
keywords = {adult, agoraphobia, article, Aversive Therapy, behavior therapy, Circadian Rhythm, clinical article, cognition, Cognition Disorders, cognitive therapy, controlled study, Diagnostic and Statistical Manual of Mental Disorders, female, Health Status, human, Humans, Individuality, male, Medical Records, Models, panic, Panic Disorder, Psychiatric Status Rating Scales, Psychological, Self Concept, Self Efficacy, Sensation, Time Factors, treatment outcome},
pubstate = {published},
tppubtype = {article}
}
The aim of this study is to assess if changes in dysfunctional beliefs and self-efficacy precede changes in panic apprehension in the treatment of panic disorder with agoraphobia. Subjects participated in a larger study comparing the effectiveness of cognitive restructuring and exposure. Four variables were measured: (a) the strength of each subject's main belief toward the consequence of a panic attack; (b) perceived self-efficacy to control a panic attack in the presence of panicogenic body sensations; (c) perceived self-efficacy to control a panic attack in the presence of panicogenic thoughts; and (d) the level of panic apprehension of a panic attack. Variables were recorded daily on a "0" to "100" scale using category partitioning. Multivariate time series analysis and "causality testing" showed that, for all participants, cognitive changes preceded changes in the level of panic apprehension. Important individual differences were observed in the contribution of each variable to the prediction of change in panic apprehension. Changes in apprehension were preceded by changes in belief in three cases, by changes in self-efficacy in six cases, and by changes in both belief and self-efficacy in the remaining three cases. This pattern was observed in participants in the exposure condition as well as those in the cognitive restructuring condition. These results provide more empirical support to the hypothesis that cognitive changes precede improvement. They also underlie the importance of individual differences in the process of change. Finally, this study does not support the hypothesis that exposure and cognitive restructuring operate through different mechanisms, namely a behavioral one and a cognitive one. © 2006 Elsevier Ltd. All rights reserved.
6.
Renaud, P.; Décarie, J.; Gourd, S. -P.; Paquin, L. -C.; Bouchard, S.
Eye-Tracking in Immersive Environments: A General Methodology to Analyze Affordance-Based Interactions from Oculomotor Dynamics Journal Article
In: Cyberpsychology and Behavior, vol. 6, no. 5, pp. 519–526, 2003, ISSN: 10949313 (ISSN).
Abstract | Links | BibTeX | Tags: Adaptation, article, Computer Simulation, Data Display, device, eye movement control, Eye movements, eye tracking, Fixation, Head, head movement, head position, human, human experiment, Humans, male, methodology, Models, motor performance, Movement, normal human, Ocular, perception, Physiological, Psychological, Reference Values, User-Computer Interface, virtual reality, visual information, Visual Perception, visual stimulation
@article{renaud_eye-tracking_2003,
title = {Eye-Tracking in Immersive Environments: A General Methodology to Analyze Affordance-Based Interactions from Oculomotor Dynamics},
author = {P. Renaud and J. Décarie and S. -P. Gourd and L. -C. Paquin and S. Bouchard},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0142126405&doi=10.1089%2f109493103769710541&partnerID=40&md5=ee95606b1ed832fcc154d27b22f8bd3a},
doi = {10.1089/109493103769710541},
issn = {10949313 (ISSN)},
year = {2003},
date = {2003-01-01},
journal = {Cyberpsychology and Behavior},
volume = {6},
number = {5},
pages = {519–526},
abstract = {This paper aims at presenting a new methodology to study how perceptual and motor processes organized themselves in order to achieve invariant visual information picking-up in virtual immersions. From a head-mounted display, head and eye movements were recorded using tracking devices (magnetic and infrared) that render the six degrees-of-freedom associated with the position and orientation of head movements, and two degrees-of-freedom from one eye. We measured the continuous line of sight's deviation from a pre-selected area on a virtual stimulus. Some preliminary analyses of the dynamical properties of the emergent perceptual and motor patterns are presented as they are considered to be representative of the process of affordance extraction.},
keywords = {Adaptation, article, Computer Simulation, Data Display, device, eye movement control, Eye movements, eye tracking, Fixation, Head, head movement, head position, human, human experiment, Humans, male, methodology, Models, motor performance, Movement, normal human, Ocular, perception, Physiological, Psychological, Reference Values, User-Computer Interface, virtual reality, visual information, Visual Perception, visual stimulation},
pubstate = {published},
tppubtype = {article}
}
This paper aims at presenting a new methodology to study how perceptual and motor processes organized themselves in order to achieve invariant visual information picking-up in virtual immersions. From a head-mounted display, head and eye movements were recorded using tracking devices (magnetic and infrared) that render the six degrees-of-freedom associated with the position and orientation of head movements, and two degrees-of-freedom from one eye. We measured the continuous line of sight's deviation from a pre-selected area on a virtual stimulus. Some preliminary analyses of the dynamical properties of the emergent perceptual and motor patterns are presented as they are considered to be representative of the process of affordance extraction.