Managing Editor, Transactions (2009)
H. D. Nelson, M. J. Moran, G. Reistad, D. Wisler, D. Cooke, M. Mignolet, ...
CHANGES OF ADDRESS must be received at Society headquarters seven weeks before they are to be effective. Please send old label and new address. STATEMENT from By-Laws. The Society shall not be...
Nonlinear causal discovery with additive noise models (2009)
Hoyer, P.O., Janzing, D., Mooij, J.M., Peters, J., Schölkopf, B.
The discovery of causal relationships between a set of observed variables is a fundamental problem in science. For continuous-valued data linear acyclic causal models are often used because these...
Kernel Methods for Detecting the Direction of Time Series (2009)
Peters, J., Janzing, D., Gretton, A., Schölkopf, B.
We propose two kernel based methods for detecting the time direction in empirical time series. First we apply a Support Vector Machine on the finitedimensional distributions of the time series...
Application of degree reduction of polynomial Bézier curves to rational case (2008)
Yunbeom Park, M. Watkins, A. Worsey, D. Lutterkort, J. Peters, U. Reif, ...
• Polynomial Bézier curve of degree n b n (t) = n� k=0 bkB n k (t) , 0 ≤ t ≤ 1, where B n k (t) are Bernstein polynomials of degree n, and b k(k = 0, · · · , n) are control points of b n...
We describe and analyze a subdivision scheme that generalizes bicubic spline subdivision to control nets with polar structure. Such control nets appear naturally for surfaces with the combinatorial...
Guided C 2 Spline Surfaces with V-shaped tessellation (2008)
Abstract. The guided spline approach to surface construction separates surface design and surface representation by constructing local guide surfaces and sampling these by splines of moderate degree....
Leif Kobbelt, J. Peters, L. Kobbelt, Patch Face Facecenter
Abstract. We present a gallery of simple curvature continuous surfaces that possess the topological structure of the Platonic solids. These spherelike surfaces consist of one cubic triangular or...
Modelling groundwater-dependent vegetation patterns using ensemble learning (2008)
Peters, J., De Baets, B., Samson, R., Verhoest, N. E. C.
Vegetation patterns arise from the interplay between intraspecific and interspecific biotic interactions and from different abiotic constraints and interacting driving forces and distributions. In...
Balasooriya, W. K., Denef, K., Peters, J., Verhoest, N. E. C., Boeckx, P.
Fluctuations in wetland hydrology create an interplay between aerobic and anaerobic conditions, controlling vegetation composition and microbial community structure and activity in wetland soils. In...
Modelling groundwater-dependent vegetation patterns using ensemble learning (2008)
Peters, J., De Baets, B., Samson, R., Verhoest, N. E. C.
Vegetation patterns arise from the interplay between intraspecific and interspecific biotic interactions and from different abiotic constraints and interacting driving forces and distributions. In...
Balasooriya, W. K., Denef, K., Peters, J., Verhoest, N. E. C., Boeckx, P.
Fluctuations in wetland hydrology create an interplay between aerobic and anaerobic conditions, controlling vegetation composition and microbial community structure and activity in wetland soils. In...
A Radio Frequency Driven H- Source for Linac4. (2008)
D. Küchler, DESY Maschinenphysik, T. Meinschad, J. Peters
Journal article
Manifold-valued Thin-plate Splines with Applications in Computer Graphics (2008)
Steinke, F., Hein, M., Peters, J., Schölkopf, B.
We present a generalization of thin-plate splines for interpolation and approximation of manifold-valued data, and demonstrate its usefulness in computer graphics with several applications from...
Learning Inverse Dynamics: A Comparison (2008)
Nguyen-Tuong, D., Peters, J., Seeger, M., Schölkopf, B.
While it is well-known that model can enhance the control performance in terms of precision or energy efficiency, the practical application has often been limited by the complexities of manually...
Machine Learning for Robotics: Learning Methods for Robot Motor Skills (2008)
Autonomous robots have been a vision of robotics, artificial intelligence, and cognitive sciences. An important step towards this goal is to create robots that can learn to accomplish amultitude of...
Machine Learning for Motor Skills in Robotics (2008)
Autonomous robots that can adapt to novel situations has been a long standing vision of robotics, artificial intelligence, and the cognitive sciences. Early approaches to this goal during the heydays...
In this paper, we suggest a novel reinforcement learning architecture, the Natural Actor-Critic. The actor updates are achieved using stochastic policy gradients em- ploying Amaris natural gradient...
Manifold-valued Thin-plate Splines with Applications in Computer Graphics (2008)
Steinke, F., Hein, M., Peters, J., Schölkopf, B.
We present a generalization of thin-plate splines for interpolation and approximation of manifold-valued data, and demonstrate its usefulness in computer graphics with several applications from...
Model-Based Reinforcement Learning with Continuous States and Actions (2008)
Deisenroth, M.P., Rasmussen, C.E., Peters, J., Verleysen, M.
Finding an optimal policy in a reinforcement learning (RL) framework with continuous state and action spaces is challenging. Approximate solutions are often inevitable. GPDP is an approximate dynamic...
Approximate Dynamic Programming with Gaussian Processes (2008)
Deisenroth, M.P., Peters, J., Rasmussen, C.E.
In general, it is difficult to determine an optimal closed-loop policy in nonlinear control problems with continuous-valued state and control domains. Hence, approximations are often inevitable. The...
Adaptive Importance Sampling with Automatic Model Selection in Value Function Approximation (2008)
Hachiya, H., Akiyama, T., Sugiyama, M., Peters, J., Fox, D., Gomes, C. P.
Off-policy reinforcement learning is aimed at efficiently reusing data samples gathered in the past, which is an essential problem for physically grounded AI as experiments are usually prohibitively...
Learning Perceptual Coupling for Motor Primitives (2008)
Kober, J., Mohler, B., Peters, J.
Dynamic system-based motor primitives [1] have enabled robots to learn complex tasks ranging from Tennisswings to locomotion. However, to date there have been only few extensions which have...
Local Gaussian Processes Regression for Real-time Model-based Robot Control (2008)
High performance and compliant robot control require accurate dynamics models which cannot be obtained analytically for sufficiently complex robot systems. In such cases, machine learning offers a...
Learning Robot Dynamics for Computed Torque Control Using Local Gaussian Processes Regression (2008)
Nguyen-Tuong, D., Peters, J., Stoica, A., Tunstel, E., Huntsberger, T., Arslan, T., ...
Accurate models of the robot dynamics allow the design of significantly more precise, energy-efficient and more compliant computed torque control for robots. However, in some cases the accuracy of...
Computed Torque Control with Nonparametric Regression Models (2008)
Nguyen-Tuong, D., Peters, J., Seeger, M.
Computed torque control allows the design of considerably more precise, energy-efficient and compliant controls for robots. However, the major obstacle is the requirement of an accurate model for...
Learning Inverse Dynamics: A Comparison (2008)
Nguyen-Tuong, D., Peters, J., Seeger, M., Schölkopf, B., Verleysen, M.
While it is well-known that model can enhance the control performance in terms of precision or energy efficiency, the practical application has often been limited by the complexities of manually...
Real-time Learning of Resolved Velocity Control on a Mitsubishi PA-10 (2008)
Learning inverse kinematics has long been fascinating the robot learning community. While humans acquire this transformation to complicated tool spaces with ease, it is not a straightforward...
Policy Learning: A Unified Perspective with Applications in Robotics (2008)
Peters, J., Kober, J., Nguyen-Tuong, D., Girgin, S., Loth, M., Munos, R., ...
Policy Learning approaches are among the best suited methods for high-dimensional, continuous control systems such as anthropomorphic robot arms and humanoid robots. In this paper, we show two...
Policy Learning for Motor Skills (2008)
Peters, J., Schaal, S., Ishikawa, M., Doya, K., Miyamoto, H., Yamakawa, T.
Policy learning which allows autonomous robots to adapt to novel situations has been a long standing vision of robotics, artificial intelligence, and cognitive sciences. However, to date, learning...
Policy Gradients with Parameter-based Exploration for Control (2008)
Sehnke, F., Osendorfer, C., Rückstiess, T., Graves, A., Peters, J., Schmidhuber, J., ...
We present a model-free reinforcement learning method for partially observable Markov decision problems. Our method estimates a likelihood gradient by sampling directly in parameter space, which...
Episodic Reinforcement Learning by Logistic Reward-Weighted Regression (2008)
Wierstra, D., Schaul, T., Peters, J., Schmidhuber, J., Kurkova-Pohlova, V., Neruda, R., ...
It has been a long-standing goal in the adaptive control community to reduce the generically difficult, general reinforcement learning (RL) problem to simpler problems solvable by supervised...
Machine Learning for Robotics: Learning Methods for Robot Motor Skills (2008)
Autonomous robots have been a vision of robotics, artificial intelligence, and cognitive sciences. An important step towards this goal is to create robots that can learn to accomplish amultitude of...
A Characterization of Connecting Maps as Nonlinear Roots of the Identity (2007)
. In order to define the smoothness of a piecewise polynomial surface, the domains of adjacent pieces must be related to one another by connecting maps; such maps reparametrize the surface pieces by...
Investigator Award 9457806-CCR (2007)
Abstract Given a polynomial p in d variables and of degree n we want to nd a best L 2-approximation over the d-simplex from polynomials of degree m n. This problem is shown to be equivalent to the...
Audersch, S., Flach, G., Peters, J.
Mobile Softwareagenten und Webservice-basierte Workflows sind grundsätzlich zwei recht unterschiedliche Entwicklungsparadigmen, mit denen service-orientierte Anwendungen in verteilten...
Die zweite Simulationsstudie (2007)
Gitter, R., Laue, P., Peters, J., Pinsdorf, U.
Aufgrund der Ergebnisse der ersten Simulationsstudie wurden die Nachweismechanismen der Agentenplattform verbessert und mit einer im Dezember 2005 durchgeführten zweiten Simulationsstudie auf ihre...
Sicherheitsaspekte mobiler Agenten (2007)
Peters, J., Pinsdorf, U., Roth, V.
In diesem Kapitel werden die Sicherheitsanforderungen an mobile Agentensysteme spezifiziert. Diese Anforderungen ergeben sich sowohl aus den spezifischen Aspekten von generischen und...
Balasooriya, W. K., Denef, K., Peters, J., Verhoest, N. E. C., Boeckx, P.
Fluctuations in wetland hydrology create an interplay between aerobic and anaerobic conditions, controlling vegetation composition and microbial community structure and activity in wetland soils. In...
Modelling groundwater-dependent vegetation patterns using ensemble learning (2007)
Peters, J., De Baets, B., Samson, R., Verhoest, N. E. C.
Vegetation patterns arise from the interplay between intraspecific and interspecific biotic interactions and from different abiotic constraints and interacting driving forces and distributions. In...
Balasooriya, W. K., Denef, K., Peters, J., Verhoest, N. E. C., Boeckx, P.
Fluctuations in wetland hydrology create an interplay between aerobic and anaerobic conditions, controlling vegetation composition and microbial community structure and activity in wetland soils. In...
Modelling groundwater-dependent vegetation patterns using ensemble learning (2007)
Peters, J., De Baets, B., Samson, R., Verhoest, N. E. C.
Vegetation patterns arise from the interplay between intraspecific and interspecific biotic interactions and from different abiotic constraints and interacting driving forces and distributions. In...
Prediction of delays in public transportation using neural networks (2006)
Peters, J., Emig, B., Jung, M., Schmidt, S.
The project the authors of this paper are involved in is titled "System for intelligent realtime timetable optimization and monitoring". The objective is to develop a system being able to use...
Future systems are characterized by: (a) autonomous components and their ad hoc relationships; (b) constant growth: the amount of communicated data steadily grows, data is avidly collected in various...
A distributed content-based search engine based on mobile code and web service technology (2006)
Roth, V., Pinsdorf, U., Peters, J.
Current search engines crawl the Web, download content, and digest this content locally. For multimedia content, this involves considerable volumes of data. Furthermore, this process covers only...
Surfaces with polar structure (2006)
We describe the structure and general properties of surfaces with polar layout. Polar layout is particularly suitable for high valences and is, for example, generated by a new class of subdivision...
A distributed content-based search engine based on mobile code (2005)
Roth, V., Pinsdorf, U., Peters, J.
Current search engines crawl the Web, download content, and digest this content locally. For multimedia content, this involves considerable volumes of data. Furthermore, this process covers only...
Subalgebras of groupoid C*-algebras. (2005)
Power, S. C., Hopenwasser, A., Peters, J.
We prove a spectral theorem for bimodules in the context of graph C*-algebras. A bimodule over a suitable abelian algebra is determined by its spectrum (i.e., its groupoid partial order) iff it is...
Karnon, J., Peters, J., Platt, J., Chilcott, J., McGoogan, E., Brewer, N.
Objectives: To update an earlier published report reviewing the effectiveness and cost-effectiveness of liquid-based cytology (LBC). Data sources: Electronic bibliographic databases, relevant...
Mobile kontextabhängige Multimediadienste (2004)
Gupta, P., Hoffmann, M., Holtkamp, B., Möhr, W., Peters, J., Ritscher, M., ...
Anhand der beiden Forschungsprojekte "FLAME 2008" und "MOBILE", die in Kooperationen an mehreren Instituten der Fraunhofer-IuK-Gruppe durchgeführt werden, diskutiert dieser Artikel Aspekte und...
Twenty questions: Highlighting the pitfalls and possibilities of drug research (2004)
Ashcroft, F., Benos, D., Bezanilla, F., Chien, K., Choe, S., Clapham, D., ...
Prediction of impact erosion in valve geometries (2004)
Wallace, M.S., Dempster, W.M., Scanlon, T.J., Peters, J., McCulloch, S.
In this paper, the capability of computational fluid dynamics techniques is investigated to predict the rate of solid particle erosion in industrially relevant geometries. An Eulerian-Lagrangian...
Mutations in dynein link motor neuron degeneration to defects in retrograde transport (2003)
Hafezparast, M., Klocke, R., Ruhrberg, C., Marquardt, A., Ahmad-Annuar, A., Bowen, S., ...
Degenerative disorders of motor neurons include a range of progressive fatal diseases such as amyotrophic lateral sclerosis (ALS), spinal-bulbar muscular atrophy (SBMA), and spinal muscular atrophy...
The promoter-terminator of chrysanthemunm rbcS1 directs very high expression levels in plants (2003)
Outchkourov, N.S., Peters, J., Rademakers, W., Ongsma, M.A.
Transgenic plants are increasingly used as production platforms for various proteins, yet protein expression levels in the range of the most abundant plant protein, ribulose-1,5-bisphosphate...
Peters, J., Stevenson, M., Beverley, C., Lim, J.N.W., Smith, S.
Background: This review examines the clinical effectiveness and cost-effectiveness of hand-held inhalers to deliver medication for the routine management of chronic asthma in children aged between 5...
Annadana, S., Peters, J., Jongsma, M.A.
Proteolytic activity in whole insect extracts of the western flower thrips, Frankliniella occidentalis, was found to belong predominantly to the class of cysteine proteases. The pH optimum of the...
Partial silencing of the NEC1 gene results in early opening of anthers in Petunia hybrida (2001)
Ge, Y.X., Angenent, G.C., Dahlhaus, E., Franken, J., Peters, J., Wullems, G.J., ...
The NEC1 gene, previously isolated from Petunia hybrida, is expressed at high levels in nectaries, and in a very localized fashion in stamens, particularly in the anther stomium cells and the upper...
A Scalable and Secure Global Tracking Service for Mobile Agents (2001)
In this paper, we propose a global tracking service for mobile agents, which is scalable to the Internet and accounts for security issues as well as the particularities of mobile agents (frequent...
Peters, J, Bryan, JB, Estler, WT, Evans, C, Kunzmann, H, Lucca, DA, ...
An overview of the contribution of the members of the C.I.R.P. community to the progress of Metrology and Surface Roughness Quality Evaluation is given. The following items are included in the part...
Partial silencing of the NEC1 gene results in early opening of anthers in Petunia hybrida (2001)
Angenent, GC, Dahlhaus, E, Franken, J, Peters, J, Wullems, GJ, ...
The NEC1 gene, previously isolated from Petunia hybrida, is expressed at high levels in nectaries, and in a very localized fashion in stamens, particularly in the anther stomium cells and the upper...
NEC1, a novel gene, highly expressed in nectary tissue of Petunia hybrida (2000)
Ge, Y.X., Angenent, G.C., Wittich, P.E., Peters, J., Franken, J., Busscher, M., ...
NEC1, a novel gene, highly expressed in the nectary tissue of Petunia hybrida (2000)
Ge, X.Y., Angenent, G.C., Wittich, P.E., Peters, J., Franken, J., Busscher, M., ...
To study the molecular regulation of nectary development, we cloned NEC1, a gene predominantly expressed in the nectaries of Petunia hybrida, by using the differential display RTPCR technique. The...
Mutations in Sox18 underlie cardiovascular and hair follicle defects in ragged mice (2000)
Pennisi, D., Gardner, J., Chambers, D., Hosking, B., Peters, J., Muscat, G., ...
Analysis of classical mouse mutations has been useful in the identification and study of many genes. We previously mapped Sox18, encoding an SRY-related transcription factor(1), to distal mouse...
NEC1, a novel gene, highly expressed in nectary tissue of Petunia hybrida (2000)
Angenent, GC, Wittich, PE, Peters, J, Franken, J, Busscher, M, ...
To study the molecular regulation of nectary development, we cloned NEC1, a gene predominantly expressed in the nectaries of Petunia hybrida, by using the differential display RT-PCR technique. The...
Cost effectiveness of community leg ulcer clinics: randomised controlled trial (1998)
Morrell, C.J., Walters, S.J., Dixon, S., Collins, K.A., Brereton, L.M.L., Peters, J., ...
Objectives: To establish the relative cost effectiveness of community leg ulcer clinics that use four layer compression bandaging versus usual care provided by district nurses. Design: Randomised...
Exchange of messages of different sizes (1998)
A. Goldman, D. Trystram, J. Peters
Abstract. In this paper, we study the exchange of messages among a set of processors linked through an interconnection network. We focus on general, non-uniform versions of all-to-all (or complete)...
D. Nairn, J. Peters, D. Lutterkort
The maximal distance between a Bezier segment and its control polygon is bounded in terms of the dierences of the control point sequence and a constant that depends only on the degree of the...
A Temporal Approach to Managing Schema Evolution in Object Database Systems (1998)
Iqbal A. Goralwalla, Duane Szafron, M. Tamer Özsu, Randal J. Peters, M. Tamer, Ozsu Randal, ...
The issues of schema evolution and temporal object models are generally considered to be orthogonal and are handled independently. However, to properly model applications that need incremental design...
New method developed for studying flow on hillslopes. (1996)
McDonnell, J. J., Freer, J., Hooper, R., Kendall, C., Burns, D., Beven, K. J., ...
Classical and molecular approaches in breeding for resistance to insects in ornamentals (1995)
Jongsma, M.A., Peters, J., Rademaker, W., Bosch, H.J., ...
The extent to which insecticides are needed is influenced by the level of resistance in the host plant. Plant breeders control this level through the choice of parents and selection procedures. If...
Batawi, E., Phillips, J., Peters, J., Eggeler, G.
By the introduction of a fine dispersion of stable particles, a new family of chromium-containing iron aluminide-based alloys, has been developed. These alloys exhibited modified recrystallisation...
Batawi, E., Phillips, J., Peters, J., Eggeler, G.
By the introduction of a fine dispersion of stable particles, a new family of chromium-containing iron aluminide-based alloys, has been developed. These alloys exhibited modified recrystallisation...
Design - an integrated approach (1990)
Peters, J., Leuven, K.U., Ageman, E.
In a first part design is situated as an activity which integrates four domains: the customer's domain, the fuctional one, the product and the process domains. Two phases are distinguished: the...