Search Results for author: Constantin A. Rothkopf

Found 13 papers, 4 papers with code

What Matters for Active Texture Recognition With Vision-Based Tactile Sensors

no code implementations20 Mar 2024 Alina Böhm, Tim Schneider, Boris Belousov, Alap Kshirsagar, Lisa Lin, Katja Doerschner, Knut Drewing, Constantin A. Rothkopf, Jan Peters

By evaluating our method on a previously published Active Clothing Perception Dataset and on a real robotic system, we establish that the choice of the active exploration strategy has only a minor influence on the recognition accuracy, whereas data augmentation and dropout rate play a significantly larger role.

Data Augmentation

Reinforcement Learning with Non-Exponential Discounting

no code implementations27 Sep 2022 Matthias Schultheis, Constantin A. Rothkopf, Heinz Koeppl

In contrast, in economics and psychology, it has been shown that humans often adopt a hyperbolic discounting scheme, which is optimal when a specific task termination time distribution is assumed.

Decision Making Model-based Reinforcement Learning +2

Improving saliency models' predictions of the next fixation with humans' intrinsic cost of gaze shifts

no code implementations9 Jul 2022 Florian Kadner, Tobias Thomas, David Hoppe, Constantin A. Rothkopf

These maps are based on 1) a saliency map provided by an arbitrary saliency model, 2) the recently measured human cost function quantifying preferences in magnitude and direction of eye movements, and 3) a sequential exploration bonus, which changes with each subsequent gaze shift.

Decision Making

Inferring perceptual decision making parameters from behavior in production and reproduction tasks

no code implementations31 Dec 2021 Nils Neupärtl, Constantin A. Rothkopf

Based on Bayesian decision theory we present an inference method to recover perceptual uncertainty, response variability, and the cost function underlying human responses.

Bayesian Inference Decision Making

Inverse Optimal Control Adapted to the Noise Characteristics of the Human Sensorimotor System

1 code implementation NeurIPS 2021 Matthias Schultheis, Dominik Straub, Constantin A. Rothkopf

Computational level explanations based on optimal feedback control with signal-dependent noise have been able to account for a vast array of phenomena in human sensorimotor behavior.

Descriptive

Causal Explanations of Structural Causal Models

no code implementations5 Oct 2021 Matej Zečević, Devendra Singh Dhami, Constantin A. Rothkopf, Kristian Kersting

The question part on the user's end we believe to be solved since the user's mental model can provide the causal model.

BIG-bench Machine Learning

Bayesian Classifier Fusion with an Explicit Model of Correlation

no code implementations3 Jun 2021 Susanne Trick, Constantin A. Rothkopf

Combining the outputs of multiple classifiers or experts into a single probabilistic classification is a fundamental task in machine learning with broad applications from classifier fusion to expert opinion pooling.

AdaptiFont: Increasing Individuals' Reading Speed with a Generative Font Model and Bayesian Optimization

no code implementations21 Apr 2021 Florian Kadner, Yannik Keller, Constantin A. Rothkopf

In this space we generate new true-type-fonts through active learning, render texts with the new font, and measure individual users' reading speed.

Active Learning Bayesian Optimization +1

Large Pre-trained Language Models Contain Human-like Biases of What is Right and Wrong to Do

1 code implementation8 Mar 2021 Patrick Schramowski, Cigdem Turan, Nico Andersen, Constantin A. Rothkopf, Kristian Kersting

That is, we show that these norms can be captured geometrically by a direction, which can be computed, e. g., by a PCA, in the embedding space, reflecting well the agreement of phrases to social norms implicitly expressed in the training texts and providing a path for attenuating or even preventing toxic degeneration in LMs.

General Knowledge

Solving Bongard Problems with a Visual Language and Pragmatic Reasoning

no code implementations12 Apr 2018 Stefan Depeweg, Constantin A. Rothkopf, Frank Jäkel

More than 50 years ago Bongard introduced 100 visual concept learning problems as a testbed for intelligent vision systems.

Bayesian Inference

Catching heuristics are optimal control policies

no code implementations NeurIPS 2016 Boris Belousov, Gerhard Neumann, Constantin A. Rothkopf, Jan R. Peters

In this paper, we show that interception strategies appearing to be heuristics can be understood as computational solutions to the optimal control problem faced by a ball-catching agent acting under uncertainty.

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