Peter M A Sloot | University of Amsterdam (original) (raw)

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Papers by Peter M A Sloot

Research paper thumbnail of Quantifying Synergistic Information Using Intermediate Stochastic Variables

Entropy, Feb 22, 2017

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Research paper thumbnail of Computational Science – ICCS 2020

Lecture Notes in Computer Science, 2020

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Research paper thumbnail of Questionnaire data analysis using information geometry

Scientific Reports, 2020

The analysis of questionnaires often involves representing the high-dimensional responses in a lo... more The analysis of questionnaires often involves representing the high-dimensional responses in a low-dimensional space (e.g., PCA, MCA, or t-SNE). However questionnaire data often contains categorical variables and common statistical model assumptions rarely hold. Here we present a non-parametric approach based on Fisher Information which obtains a low-dimensional embedding of a statistical manifold (SM). The SM has deep connections with parametric statistical models and the theory of phase transitions in statistical physics. Firstly we simulate questionnaire responses based on a non-linear SM and validate our method compared to other methods. Secondly we apply our method to two empirical datasets containing largely categorical variables: an anthropological survey of rice farmers in Bali and a cohort study on health inequality in Amsterdam. Compare to previous analysis and known anthropological knowledge we conclude that our method best discriminates between different behaviours, pavi...

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Research paper thumbnail of Science at the Intersection of Data, Modelling, and Computation

Journal of Computational Science, 2019

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Research paper thumbnail of The Art of Computational Science, Bridging Gaps – Forming Alloys. Preface for ICCS 2017

Procedia Computer Science, 2017

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Research paper thumbnail of Information geometric analysis of phase transitions in complex patterns: the case of the Gray-Scott reaction–diffusion model

Journal of Statistical Mechanics: Theory and Experiment, 2016

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Research paper thumbnail of Proceedings of the 2003 international conference on Designing pleasurable products and interfaces

Proceedings of the 2003 international conference on Designing pleasurable products and interfaces - DPPI '03, 2003

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Research paper thumbnail of Computational and Soft Skills Development through the Project Based Learning

Lecture Notes in Computer Science, 2003

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Research paper thumbnail of Semantic Integration for Research Environments

Handbook of Research on Computational Grid Technologies for Life Sciences, Biomedicine, and Healthcare

Research environments for modern, cross-disciplinary scientific endeavors have to unite multiple ... more Research environments for modern, cross-disciplinary scientific endeavors have to unite multiple users, with varying levels of expertise and roles, along with multitudes of data sources and processing units. The high level of required integration contrasts with the loosely-coupled nature of environments which are appropriate for research. The problem is to support integration of dynamic service-based infrastructures with data sources, tools and users in a way that conserves ubiquity, extensibility and usability. This chapter presents a close examination of related achievements in the field and the description of proposed approach. It shows that integration of loosely-coupled system components with formallydefined vocabularies may fulfill the listed requirements. The authors demonstrate that combining formal representations of domain knowledge with techniques like data integration, semantic annotations and shared vocabularies, enables the development of systems for modern e-Science. ...

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Research paper thumbnail of A Conceptual Grid Architecture for Interactive Biomedical Applications

19th IEEE Symposium on Computer-Based Medical Systems (CBMS'06), 2006

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Research paper thumbnail of Identification of Performance Characteristics from Multi-view Trace Analysis

Lecture Notes in Computer Science, 2003

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Research paper thumbnail of Computational Science – ICCS 2007

Lecture Notes in Computer Science, 2007

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Research paper thumbnail of Visual Parameteric Modeler for Rapid Composition of Parameter-Sweep Applications for Processing on Global Grids

Lecture Notes in Computer Science, 2003

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Research paper thumbnail of Workflows for Wind Tunnel Grid Applications

Lecture Notes in Computer Science, 2006

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Research paper thumbnail of Computational Science – ICCS 2005

Lecture Notes in Computer Science, 2005

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Research paper thumbnail of Advances in Grid Computing - EGC 2005

Lecture Notes in Computer Science, 2005

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Research paper thumbnail of Agent-Based Environment for Knowledge Integration

Lecture Notes in Computer Science, 2009

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Research paper thumbnail of Understanding Collaborative Studies through Interoperable Workflow Provenance

Lecture Notes in Computer Science, 2010

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Research paper thumbnail of Advances in Grid and Pervasive Computing

Lecture Notes in Computer Science, 2009

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Research paper thumbnail of Experiments with MRAI Time Stepping Schemes on a Distributed Memory Parallel Environment

Implicit time stepping is often difficult to parallelize. The recently proposed Minimal Residual ... more Implicit time stepping is often difficult to parallelize. The recently proposed Minimal Residual Approximate Implicit (MRAI) schemes (2) are spe- cially designed as a cheaper and parallelizable alternative for implicit time step- ping. A several GMRES iterations are performed to solve approximately the im- plicit scheme of interest, and the step size is adjusted to guarantee stability. A natural way to apply the approach is to modify a given implicit scheme in which one is interested. Here, we present numerical results for two parallel im- plementations of MRAI schemes. One is based on the simple Euler Backward scheme, and the other is the MRAI-modified multistep ODE solver LSODE. On the Cray T3E and IBM SP2 platforms, the MRAI codes exhibit parallelism of explicit schemes. The model problem under consideration is the 3D spatially discretized heat equation. The speed-up results for the Cray T3E and IBM SP2 are reported.

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Research paper thumbnail of Quantifying Synergistic Information Using Intermediate Stochastic Variables

Entropy, Feb 22, 2017

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Research paper thumbnail of Computational Science – ICCS 2020

Lecture Notes in Computer Science, 2020

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Research paper thumbnail of Questionnaire data analysis using information geometry

Scientific Reports, 2020

The analysis of questionnaires often involves representing the high-dimensional responses in a lo... more The analysis of questionnaires often involves representing the high-dimensional responses in a low-dimensional space (e.g., PCA, MCA, or t-SNE). However questionnaire data often contains categorical variables and common statistical model assumptions rarely hold. Here we present a non-parametric approach based on Fisher Information which obtains a low-dimensional embedding of a statistical manifold (SM). The SM has deep connections with parametric statistical models and the theory of phase transitions in statistical physics. Firstly we simulate questionnaire responses based on a non-linear SM and validate our method compared to other methods. Secondly we apply our method to two empirical datasets containing largely categorical variables: an anthropological survey of rice farmers in Bali and a cohort study on health inequality in Amsterdam. Compare to previous analysis and known anthropological knowledge we conclude that our method best discriminates between different behaviours, pavi...

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Research paper thumbnail of Science at the Intersection of Data, Modelling, and Computation

Journal of Computational Science, 2019

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Research paper thumbnail of The Art of Computational Science, Bridging Gaps – Forming Alloys. Preface for ICCS 2017

Procedia Computer Science, 2017

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Research paper thumbnail of Information geometric analysis of phase transitions in complex patterns: the case of the Gray-Scott reaction–diffusion model

Journal of Statistical Mechanics: Theory and Experiment, 2016

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Research paper thumbnail of Proceedings of the 2003 international conference on Designing pleasurable products and interfaces

Proceedings of the 2003 international conference on Designing pleasurable products and interfaces - DPPI '03, 2003

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Research paper thumbnail of Computational and Soft Skills Development through the Project Based Learning

Lecture Notes in Computer Science, 2003

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Research paper thumbnail of Semantic Integration for Research Environments

Handbook of Research on Computational Grid Technologies for Life Sciences, Biomedicine, and Healthcare

Research environments for modern, cross-disciplinary scientific endeavors have to unite multiple ... more Research environments for modern, cross-disciplinary scientific endeavors have to unite multiple users, with varying levels of expertise and roles, along with multitudes of data sources and processing units. The high level of required integration contrasts with the loosely-coupled nature of environments which are appropriate for research. The problem is to support integration of dynamic service-based infrastructures with data sources, tools and users in a way that conserves ubiquity, extensibility and usability. This chapter presents a close examination of related achievements in the field and the description of proposed approach. It shows that integration of loosely-coupled system components with formallydefined vocabularies may fulfill the listed requirements. The authors demonstrate that combining formal representations of domain knowledge with techniques like data integration, semantic annotations and shared vocabularies, enables the development of systems for modern e-Science. ...

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Research paper thumbnail of A Conceptual Grid Architecture for Interactive Biomedical Applications

19th IEEE Symposium on Computer-Based Medical Systems (CBMS'06), 2006

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Research paper thumbnail of Identification of Performance Characteristics from Multi-view Trace Analysis

Lecture Notes in Computer Science, 2003

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Research paper thumbnail of Computational Science – ICCS 2007

Lecture Notes in Computer Science, 2007

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Research paper thumbnail of Visual Parameteric Modeler for Rapid Composition of Parameter-Sweep Applications for Processing on Global Grids

Lecture Notes in Computer Science, 2003

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Research paper thumbnail of Workflows for Wind Tunnel Grid Applications

Lecture Notes in Computer Science, 2006

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Research paper thumbnail of Computational Science – ICCS 2005

Lecture Notes in Computer Science, 2005

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Research paper thumbnail of Advances in Grid Computing - EGC 2005

Lecture Notes in Computer Science, 2005

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Research paper thumbnail of Agent-Based Environment for Knowledge Integration

Lecture Notes in Computer Science, 2009

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Research paper thumbnail of Understanding Collaborative Studies through Interoperable Workflow Provenance

Lecture Notes in Computer Science, 2010

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Research paper thumbnail of Advances in Grid and Pervasive Computing

Lecture Notes in Computer Science, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Experiments with MRAI Time Stepping Schemes on a Distributed Memory Parallel Environment

Implicit time stepping is often difficult to parallelize. The recently proposed Minimal Residual ... more Implicit time stepping is often difficult to parallelize. The recently proposed Minimal Residual Approximate Implicit (MRAI) schemes (2) are spe- cially designed as a cheaper and parallelizable alternative for implicit time step- ping. A several GMRES iterations are performed to solve approximately the im- plicit scheme of interest, and the step size is adjusted to guarantee stability. A natural way to apply the approach is to modify a given implicit scheme in which one is interested. Here, we present numerical results for two parallel im- plementations of MRAI schemes. One is based on the simple Euler Backward scheme, and the other is the MRAI-modified multistep ODE solver LSODE. On the Cray T3E and IBM SP2 platforms, the MRAI codes exhibit parallelism of explicit schemes. The model problem under consideration is the 3D spatially discretized heat equation. The speed-up results for the Cray T3E and IBM SP2 are reported.

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Research paper thumbnail of Nonparametric estimation of Fisher information from real data

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Research paper thumbnail of Information geometric analysis of phase transitions in complex patterns: the case of the Gray-Scott reaction–diffusion model

The Fisher–Rao metric from information geometry is related to phase transition phenomena in class... more The Fisher–Rao metric from information geometry is related to phase transition phenomena in classical statistical mechanics. Several studies propose to extend the use of information geometry to study more general phase transitions in complex systems. However, it is unclear whether the Fisher–Rao metric does indeed detect these more general transitions, especially in the absence of a statistical model. In this paper we study the transitions between patterns in the Gray-Scott reaction–diffusion model using Fisher information. We describe the system by a probability density function that represents the size distribution of blobs in the patterns and compute its Fisher information with respect to changing the two rate parameters of the underlying model. We estimate the distribution non-parametrically so that we do not assume any statistical model. The resulting Fisher map can be interpreted as a phase-map of the different patterns. Lines with high Fisher information can be considered as boundaries between regions of parameter space where patterns with similar characteristics appear. These lines of high Fisher information can be interpreted as phase transitions between complex patterns.

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