Hebbian Learning of Bayes Optimal Decisions (2009)
Bernhard Nessler, Michael Pfeiffer, Wolfgang Maass
Uncertainty is omnipresent when we perceive or interact with our environment, and the Bayesian framework provides computational methods for dealing with it. Mathematical models for Bayesian decision...
Hebbian learning of Bayes optimal decisions (2009)
Nessler, Bernhard, Pfeiffer, Michael, Maass, Wolfgang
When we perceive our environment, make a decision, or take an action, our brain has to deal with multiple sources of uncertainty. The Bayesian framework of statistical estimation provides...
Reward-modulated Hebbian Learning of Optimal Decision Making (2009)
Pfeiffer, Michael, Nessler, Bernhard, Douglas, Rodney J., Maass, Wolfgang
We introduce a framework for Bayesian decision making in which the learning of optimal decisions is reduced to its simplest and biologically most plausible form: Hebbian learning on a linear neuron....
A Hebbian Learning Rule for Optimal Decision Making (2008)
Pfeiffer, Michael, Nessler, Bernhard, Maass, Wolfgang
Humans and animals can learn to make close to optimal decisions, even if there are multiple sources of uncertainty in their environment. The Bayesian framework has proved to be a valuable...
Efficient continuous-time reinforcement learning with adaptive state graphs (2007)
Neumann, Gerhard, Pfeiffer, Michael, Maass, Wolfgang
We present a new reinforcement learning approach for deterministic continuous control problems in environments with unknown, arbitrary reward functions. The difficulty of finding solution...
Batch Reinforcement Learning Methods for Point to Point movements (2006)
Neumann, Gerhard, Pfeiffer, Michael, Hauser, Helmut
In this report we investigate various Batch Mode Reinforcement Learning (BRL) Algorithms for continuous control problems. There is an increasing interest for Batch Mode Reinforcement Learning...
Reinforcement Learning for Trajectory Following (2006)
Neumann, Gerhard, Pfeiffer, Michael, Hauser, Helmut
In this tech report we investigate the use of reinforcement learning techniques for point to point and trajectory following movements of a simulated center of mass of a humanoid robot. The task is to...
Architektur eines multimodalen Forschungssystems zur iterativen inhaltsbasierten Bildsuche (2006)
Durch den Einzug digitaler Kameras in die privaten Haushalte ist auch hier ein enormer Zuwachs der digitalen Bilddatenbestände zu verzeichnen. Diese Entwicklung wurde im kommerziellen Bereich...
Predicting Text Relevance from Sequential Reading Behavior (2005)
Pfeiffer, Michael, Saffari A. A., Amir R., Juffinger, Andreas
In this paper we show that it is possible to make good predictions of text relevance, from only features of conscious eye movements during reading. We pay special attention to the order in which the...
Vision Systems with the Human in the Loop (2005)
Christian Bauckhage, Marc Hanheide, Sebastian Wrede, Thomas Käster, Michael Pfeiffer, Gerhard Sagerer
The emerging cognitive vision paradigm deals with vision systems that apply machine learning and automatic reasoning in order to learn from what they perceive. Cognitive vision systems can rate the...
Predicting Text Relevance from Sequential Reading Behavior (2005)
Michael Pfeiffer, Andreas Juffinger
In this paper we show that it is possible to make good predictions of text relevance, from only features of conscious eye movements during reading. We pay special attention to the order in which the...
Vision Systems with the Human in the Loop (2005)
Christian Bauckhage, Marc Hanheide, Sebastian Wrede, Thomas Käster, Michael Pfeiffer, Gerhard Sagerer
The emerging cognitive vision paradigm deals with vision systems that apply machine learning and automatic reasoning in order to learn from what they perceive. Cognitive vision systems can rate the...
Pfeiffer, Michael, Bräutigam, Heike, Draws, Detlev, Sigg, Andreas
From a prospective matched-pair study in 40 patients it can be concluded that the use of a new bipolar sealer system for electrocoagulation is effective in Total Knee Arthroplasty in reducing the...
Reinforcement Learning of Strategies for Settlers of Catan (2004)
In this paper we study the application of machine learning methods in complex computer games. A combination of hierarchical reinforcement learning and simple heuristics is used to learn strategies...
Pfeiffer, Michael, Haas, Oliver, Huber-Stentrup, Martin, Georg, Christian, Frobin, Wolfgang
In a series of 46 patients the effects of spinal fusion upon intervertebral height and sagittal alignment in operated and non-operated segments were retrospectively evaluated on digitized...
Content-Based Image retrieval . . . (2003)
Thomas Käster, Michael Pfeiffer, Gerhard Sagerer
Due to the size of todays professional image databases, the standard approach to content-based image retrieval is to interactively navigate through the content. However, most people whose job...
INDI - Intelligent Database Navigation by Interactive and Intuitive . . . (2002)
Tanja Kämpfe, Thomas Kästner, Thomas K Aster, Michael Pfeiffer, Helge Ritter, Gerhard Sagerer
We present a content-based image retrieval system INDI that combines the use of low-level pattern recognition techniques, machine learning and an intuitive human-computer interface in order to...
Design and Implementation of a SCI-based Real-Time CORBA (2001)
Stefan Lankes, Michael Pfeiffer, Thomas Bemmerl
in the forthcoming CORBA 3.0 standard are important steps towards defining standard-based middleware which can satisfy real-time requirements in an embedded system. This article describes these new...
In dieser Arbeit wird ein numerischer Algorithmuszur Lösung der Maxwellgleichungen beschrieben.Es handelt sich um eine Finite-Differenzen-Methodeim Zeitbereich, die die Simulation desLichtdurchgangs...
Berlin, Humboldt-Univ., Diss., 1999.
In dieser Arbeit wird ein numerischer Algorithmus zur Lösung der Maxwellgleichungen beschrieben. Es handelt sich um eine Finite-Differenzen-Methode im Zeitbereich, die die Simulation des...
Halle, Univ., Diss., 1992 (Nicht für den Austausch).
Marburg, Univ., Diss., 1986.
Praktische Beullasten orthotroper Kreiszylinderschalen in Theorie und Versuch / (1982)
Zugl.: Karlsruhe, Univ., Diss., 1981.
Karlsruhe, Univ., Diss., 1981.
Measures to Improve the Efficiency of the Operational Framework for Monetary Policy
This study shows that strong interest rate expectations can have a massive short-term impact on counterparties bidding behavior if certain conditions for monetary policy operations are present. This...
Das Scheitern der Doha-Runde - wie groß ist der Schaden?
Stefan Tangermann, Bernhard Brümmer, Jürgen Matthes, Michael Pfeiffer, Andreas Schneider
Die Staats- und Regierungschefs hatten beim G8-Gipfel am 16./17. Juli 2006 in St. Petersburg vereinbart, bis Mitte August die Einigung über die Eckpunkte der Marktöffnung im Agrar- und...
Disc height and anteroposterior translation in fused and adjacent segments after lumbar spine fusion
Pfeiffer, Michael, Haas, Oliver, Huber-Stentrup, Martin, Georg, Christian, Frobin, Wolfgang
In a series of 46 patients the effects of spinal fusion upon intervertebral height and sagittal alignment in operated and non-operated segments were retrospectively evaluated on digitized...
Pfeiffer, Michael, Bräutigam, Heike, Draws, Detlev, Sigg, Andreas
From a prospective matched-pair study in 40 patients it can be concluded that the use of a new bipolar sealer system for electrocoagulation is effective in Total Knee Arthroplasty in reducing the...
Cohn, Heather Irina, Harris, David M., Pesant, Stephanie, Pfeiffer, Michael, Zhou, Rui-Hai, Koch, Walter J., ...
G protein-coupled receptor kinase 2 (GRK2) is a serine/theorinine kinase that phosphorylates and desensitizes agonist-bound G protein-coupled receptors. GRK2 is increased in expression and activity...