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Constantin
A. Rothkopf Frankfurt Institute for Advanced Studies Goethe-University, Frankfurt, room 3.102 Ruth-Moufang-Str. 1, 60438 Frankfurt, Germany phone: +49.69.798 47509 e-mail: rothkopf (at) fias (dot) uni-frankfurt (dot) de |
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After obatining a joint PhD in Brain & Cognitive
Sciences and Computer
Science at the University of Rochester in 2008, I am
currently a postdoc at the Frankfurt
Institute for Advanced Studies working with Jochen
Triesch in the theoretical
neuroscience group and a lecturer at the Goethe University,
Frankfurt. My research interests revolve
around the
distinction between 'looking' and 'seeing' and how this distinction
relates
to vision in goal directed behavior. To this end, I am currently using
mainly three
methodologies: tracking of human eye movements during execution of
extended visuomotor tasks in natural and virtual environments, building
models of these tasks and implementing
algorithms that learn how to solve these tasks in virtual
agents, developing learning algorithms with an emphasis on the learning
of sensory representations for actions. If you are looking for some of my other activities, please follow this link. |
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| News: 30 September - 3 October 2009 - the Frankfurt Institute for Advanced Studies is organizing the Bernstein Conference on Computational Neuroscience 2009 15 July 2009 - Invited talk in the SFB Colloquium series at Institute for Neuroinformatics in the computer science department, University of Ulm, Ulm, Germany 10 June 2009 - Invited talk in the FoKo Colloquium series of the psychology department at the Ludwig-Maximilians University, Munich, Germany 27 May 2009 - Short presentation at the Kick-off meeting of the IM-CLeVeR project, University La Sapienza, Rome, Italy 27-28 Nov 2008 - Invited talk at the 'International Workshop: Machine Learning Approaches to Representational Learning and Recognition in Vision' at FIAS, Frankfurt, Germany |
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| Publications: | ||
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M.
M. Hayhoe, C. A. Rothkopf: 'Eye movements in natural behavior', in
'Encyclopedia of Cognitive Science', Editor: Lynn Nadel, Wiley,
(submitted) |
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C. A. Rothkopf, T. H. Weisswange, J. Triesch: 'Learning independent causes in natural images explains the spacevariant oblique effect', IEEE 8th International Conference on Development and Learning, June 5-7, 2009, (accepted) | |
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T. H. Weisswange, C. A. Rothkopf, T. Rodemann, J. Triesch: 'Can reinforcement learning explain the development of causal inference in multisensory integration?', IEEE 8th International Conference on Development and Learning, June 5-7, 2009, (accepted) | |
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C. A. Rothkopf, T. H. Weisswange, J. Triesch: 'Computational modeling of multisensory object perception', in 'Multisensory Object Perception in the Primate Brain', Editors: M. J. Naumer & J. Kaiser, New York: Springer (accepted) | |
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C. A.
Rothkopf, D. H. Ballard: 'Image statistics at the point of
gaze during
human navigation', Visual Neuroscience, special issue on
'Natural Systems Analysis', 26, 81–92, 2009 [pdf], [html] |
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C. A. Rothkopf, D. H. Ballard: 'A credit assignment algorithm for modular reinforcement learning', (under review) | |
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C. A.
Rothkopf, D. H. Ballard, M.M. Hayhoe: 'Task and context
determine where you look'. Journal of Vision, 7(14):16, 1-20, 2007. [pdf], [html] |
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| J. B. Pelz, C. Rothkopf: 'Oculomotor behavior while navigating natural and man-made environments' in 'Eye movements: A window on mind and brain', Editors: Roger van Gompel, Martin Fischer, Wayne Murray, Robin Hill. Elsevier Press, 2007 | ||
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J.
F. M. Jehee, C. A.
Rothkopf, J.
M. Beck, D. H. Ballard: 'Learning receptive fields using predictive
feedback', Journal of Physiology Paris, 100, 125-132, 2006 [pdf] |
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R.
D. Meyer, E. P. Horch, Z. Ninkov, W.F. van Altena, C.A.
Rothkopf: 'RYTSI: the
Rit-Yale-Tip-Tilt-Speckle-Imager', Publications of the
Astronomical Society of
the Pacific, 118 , 162-171, 2006 [pdf] |
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C.
A. Rothkopf, J. B. Pelz: 'Head
movement estimation for
wearable eye tracker',
Proceedings of the Eye Tracking Research & Application
Symposium, ETRA
2004, San Antonio, Texas, USA, ACM, 2004 [pdf] |
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Conference Talks: C. A. Rothkopf, T. H. Weisswange, J. Triesch: 'Learning independent causes in natural images explains the spacevariant oblique effect', IEEE 8th International Conference on Development and Learning, June 5-7, 2009, Shanghai, China T. H. Weisswange, C. A. Rothkopf, T. Rodemann, J. Triesch: 'Can reinforcement learning explain the development of causal inference in multisensory integration?', IEEE 8th International Conference on Development and Learning, June 5-7, 2009, Shanghai, China T. H. Weisswange, C. Rothkopf, J. Triesch: 'A walk through the woods explains the space variant oblique effect', COSYNE - Computational and Systems Neuroscience, February 26-March 1, 2009, Salt Lake City, Utah, USA C. A. Rothkopf, D. H. Ballard: 'Human eye movements correlate with intrinsic reward structure in natural visuomotor tasks', 8th annual meeting of the Vision Science Society, May 9-14, 2008, Naples, Florida, USA. (Student travel award) M. Burigo, C. A. Rothkopf: 'Are you expecting a change? Advantages in focusing on the details', ESCOP - European Society for Cognitive Psychology, August 29-September 1, 2007, Marseille, France C. A. Rothkopf, D. H. Ballard: 'Credit assignment with Bayesian reward estimation', COSYNE - Computational and Systems Neuroscience, March 22-25, 2007, Salt Lake City, Utah, USA J. Fiser, R. N. Aslin, A. Lathrop, C. Rothkopf, J. Markant: 'An infants' eye view of the world: Implications for learning in natural contexts', International Conference on Infant Studies, June 19-23, 2006, Kyoto, Japan C. A. Rothkopf, D. H. Ballard, B. T. Sullivan, K. de Barbaro : 'Bayesian modeling of task dependent visual attention strategy in a virtual reality environment', 5th annual meeting of the Vision Science Society, May 6-11, 2005, Sarasota, Florida, USA D. H. Ballard, C. Rothkopf: 'Learning visual representations with projection pursuit', 5th annual meeting of the Vision Science Society, May 6-11, 2005, Sarasota, Florida, USA C. A. Rothkopf, J. B. Pelz: 'Head movement estimation for wearable eye tracker', Proceedings of the Eye Tracking Research & Application Symposium, ETRA 2004, San Antonio, Texas, USA, ACM, 2004 Conference Posters: C. A. Rothkopf, D. H. Ballard: 'Human intrinsic visuomotor rewards in obstacle avoidance', 32nd European Conference on Visual Perception, August 24-28, 2009, Regensburg, Germany C. A. Rothkopf, T. H. Weisswange, J.Triesch: 'A walk through the woods explains the space variant oblique effect', 9th annual meeting of the Vision Science Society, May 8-13, 2009, Naples, Florida, USA C. A. Rothkopf, D. H. Ballard: 'Relating contrast statistics at fixation location to navigational control law', 7th annual meeting of the Vision Science Society, May 11-16, 2007, Sarasota, Florida, USA C. A. Rothkopf, D. H. Ballard: 'Relating contrast statistics at fixation location to navigational control law', 7th annual meeting of the Vision Science Society, May 11-16, 2007, Sarasota, Florida, USA J. B. Pelz, C. A. Rothkopf: 'Task dependence of space-time statistics at point of gaze revealed by eye tracking in natural wooded environment', 7th annual meeting of the Vision Science Society, May 11–16, 2007, Sarasota, Florida, USA J. B. Pelz, C. A. Rothkopf: ' Task dependence of image statistics at the point of gaze in a natural wooded environment', COSYNE - Computational and Systems Neuroscience, March 22-25, 2007, Salt Lake City, Utah, USA C.
Rothkopf, D.
Ballard, M. Hayhoe: 'Credit assignment in visuo-motor behaviors using a
consumable global reward signal', Society for Neuroscience Annual
Meeting, October 14 - October 18, 2006, Atlanta, Georgia, USA D.
H Ballard, C. Rothkopf: 'Getting Credit Assignment Right in
Visuo-Motor Behaviors', 6th annual meeting of the Vision Science
Society, May 5 – May
10, 2006, Sarasota, Florida, USA
C. Rothkopf, M. M. Hayhoe, K. Parkins: 'Predictive eye movements in physically possible and impossible worlds: evidence for internal models', 6th annual meeting of the Vision Science Society, May 5 – May 10, 2006, Sarasota, Florida, USA C. Rothkopf, D. H Ballard: 'A credit assignment algorithm for composite visuo-motor behaviors', COSYNE - Computational and Systems Neuroscience, March 5-8, 2006, Salt Lake City, Utah, USA J. B. Pelz, C. A. Rothkopf, S. R. Broskey: 'Version and vergence eye movements in mobile observers', 5th annual meeting of the Vision Science Society, May 6 – May 11, 2005, Sarasota, Florida, USA C. Rothkopf, D. H. Ballard, J. Shaw, M. Ambastha: 'Coding Cortical Hierarchies Using Projection Pursuit', COSYNE - Computational and Systems Neuroscience, 2005, Salt Lake City, Utah, USA C. Rothkopf, W.J. Ma, P.E. Latham, D. Bavelier, A. Pouget: 'Learning rules for unsupervised perceptual learning', COSYNE - Computational and Systems Neuroscience, 2005, Salt Lake City, Utah, USA |
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| Collaborators
past & present: Jeff Beck Michele Burigo Jozsef Fiser Janneke F.M. Jehee Wei Ji Ma Jeff Pelz Alexandre Pouget |
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| Current
students: Omid Aladini (master student; coadvising with J. Triesch) Ming Liu (master student; coadvising with T. Rodermann) Hazem Toutounji (master student; coadvising with J. Triesch) Thomas Weisswange (PhD student; coadvising with J. Triesch) |
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| Teaching: FIAS: 'Recent Advances in Reinforcement Learning: Theory, Agent Modeling, Human Behavior' seminar, winter semester 2009/2010 FIAS: 'Reinforcement Learning' lecture, summer semester 2009 together with J. Triesch Tutor of the 'reinforcement-learning-group' at 2008 Fias Neuro-Summerschool Lectures on Probability and Statistics 1 & 2 at the 2008 Fias Neuro- Summerschool Guest Lecture in CS240 'The Computational Brain' taught by Dana H. Ballard Guest Lecture in BCS151 'Perception and Action' taught by David R. Williams Guest Lecture in BCS191Q 'Seeing and Acting in a Virtual World' taught by Mary Hayhoe, Jelena Jovancevic, and Brian Sullivan Teaching assistant in BCS110 'Neural Foundations of Behavior', Alexandre Pouget Teaching assistant in BCS151 'Perception and Action', David R. Williams Teaching assistant in BCS112 ‘Cognitive Psychology’, Michael Tanenhaus |
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