Search Results for author: Erhan Oztop

Found 11 papers, 1 papers with code

Affordance Blending Networks

no code implementations24 Apr 2024 Hakan Aktas, Yukie Nagai, Minoru Asada, Erhan Oztop, Emre Ugur

As a theoretical lens, affordances bridge the gap between effect and action, providing a nuanced understanding of the connections between agents' actions on entities and the effect of these actions.

Bidirectional Progressive Neural Networks with Episodic Return Progress for Emergent Task Sequencing and Robotic Skill Transfer

no code implementations6 Mar 2024 Suzan Ece Ada, Hanne Say, Emre Ugur, Erhan Oztop

In an attempt to exemplify such a development by inspiring how humans acquire knowledge and transfer skills among tasks, we introduce a novel multi-task reinforcement learning framework named Episodic Return Progress with Bidirectional Progressive Neural Networks (ERP-BPNN).

ERP Multi-Task Learning

Correspondence learning between morphologically different robots via task demonstrations

no code implementations20 Oct 2023 Hakan Aktas, Yukie Nagai, Minoru Asada, Erhan Oztop, Emre Ugur

To be specific, besides robots with similar morphologies with different degrees of freedom, we show that a fixed-based manipulator robot with joint control and a differential drive mobile robot can be addressed within the proposed framework.

Task 2

Discovering Predictive Relational Object Symbols with Symbolic Attentive Layers

no code implementations2 Sep 2023 Alper Ahmetoglu, Batuhan Celik, Erhan Oztop, Emre Ugur

We compare the performance of our proposed architecture with state-of-the-art symbol discovery methods in a simulated tabletop environment where the robot needs to discover symbols related to the relative positions of objects to predict the observed effect successfully.

Object

Diffusion Policies for Out-of-Distribution Generalization in Offline Reinforcement Learning

no code implementations10 Jul 2023 Suzan Ece Ada, Erhan Oztop, Emre Ugur

In contrast to behavior cloning, which assumes the data is collected from expert demonstrations, offline RL can work with non-expert data and multimodal behavior policies.

Continuous Control D4RL +6

High-level Features for Resource Economy and Fast Learning in Skill Transfer

no code implementations18 Jun 2021 Alper Ahmetoglu, Emre Ugur, Minoru Asada, Erhan Oztop

To be concrete, in our simulation experiments, we either apply principal component analysis (PCA) or slow feature analysis (SFA) on the signals collected from the last hidden layer of a deep network while it performs a source task, and use these features for skill transfer in a new target task.

Decision Making

DeepSym: Deep Symbol Generation and Rule Learning from Unsupervised Continuous Robot Interaction for Planning

1 code implementation4 Dec 2020 Alper Ahmetoglu, M. Yunus Seker, Justus Piater, Erhan Oztop, Emre Ugur

We propose a novel general method that finds action-grounded, discrete object and effect categories and builds probabilistic rules over them for non-trivial action planning.

Object

On the weight and density bounds of polynomial threshold functions

no code implementations6 Jul 2020 Erhan Oztop, Minoru Asada

In this report, we show that all n-variable Boolean function can be represented as polynomial threshold functions (PTF) with at most $0. 75 \times 2^n$ non-zero integer coefficients and give an upper bound on the absolute value of these coefficients.

ACNMP: Skill Transfer and Task Extrapolation through Learning from Demonstration and Reinforcement Learning via Representation Sharing

no code implementations25 Mar 2020 M. Tuluhan Akbulut, Erhan Oztop, M. Yunus Seker, Honghu Xue, Ahmet E. Tekden, Emre Ugur

To equip robots with dexterous skills, an effective approach is to first transfer the desired skill via Learning from Demonstration (LfD), then let the robot improve it by self-exploration via Reinforcement Learning (RL).

Reinforcement Learning (RL)

Symbol Emergence in Cognitive Developmental Systems: a Survey

no code implementations26 Jan 2018 Tadahiro Taniguchi, Emre Ugur, Matej Hoffmann, Lorenzo Jamone, Takayuki Nagai, Benjamin Rosman, Toshihiko Matsuka, Naoto Iwahashi, Erhan Oztop, Justus Piater, Florentin Wörgötter

However, the symbol grounding problem was originally posed to connect symbolic AI and sensorimotor information and did not consider many interdisciplinary phenomena in human communication and dynamic symbol systems in our society, which semiotics considered.

Heuristic algorithms for obtaining Polynomial Threshold Functions with low densities

no code implementations5 Apr 2015 Can Eren Sezener, Erhan Oztop

In this paper we present several heuristic algorithms, including a Genetic Algorithm (GA), for obtaining polynomial threshold function (PTF) representations of Boolean functions (BFs) with small number of monomials.

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