no code implementations • 25 Apr 2024 • Sichen Tao, Ruihan Zhao, Kaiyu Wang, Shangce Gao
In this paper, we propose a strategy recombination and reconstruction differential evolution algorithm called reconstructed differential evolution (RDE) to solve single-objective bounded optimization problems.
no code implementations • 19 Sep 2022 • Yue Yu, Ruihan Zhao, Sandeep Chinchali, Ufuk Topcu
Data-driven predictive control (DPC) is a feedback control method for systems with unknown dynamics.
no code implementations • 26 Jan 2022 • Chenyu You, Ruihan Zhao, Fenglin Liu, Siyuan Dong, Sandeep Chinchali, Ufuk Topcu, Lawrence Staib, James S. Duncan
In this work, we present CASTformer, a novel type of adversarial transformers, for 2D medical image segmentation.
no code implementations • 28 Oct 2021 • Chenyu You, Lianyi Han, Aosong Feng, Ruihan Zhao, Hui Tang, Wei Fan
Space-time video super-resolution (STVSR) aims to construct a high space-time resolution video sequence from the corresponding low-frame-rate, low-resolution video sequence.
no code implementations • 13 Aug 2021 • Chenyu You, Yuan Zhou, Ruihan Zhao, Lawrence Staib, James S. Duncan
However, most existing learning-based approaches usually suffer from limited manually annotated medical data, which poses a major practical problem for accurate and robust medical image segmentation.
1 code implementation • ICML Workshop URL 2021 • Kourosh Hakhamaneshi, Ruihan Zhao, Albert Zhan, Pieter Abbeel, Michael Laskin
To this end, we present Few-shot Imitation with Skill Transition Models (FIST), an algorithm that extracts skills from offline data and utilizes them to generalize to unseen tasks given a few downstream demonstrations.
no code implementations • 14 May 2021 • Chenyu You, Ruihan Zhao, Lawrence Staib, James S. Duncan
In this work, we present a novel Contrastive Voxel-wise Representation Learning (CVRL) method to effectively learn low-level and high-level features by capturing 3D spatial context and rich anatomical information along both the feature and the batch dimensions.
no code implementations • 14 Dec 2020 • Albert Zhan, Ruihan Zhao, Lerrel Pinto, Pieter Abbeel, Michael Laskin
We present Contrastive Pre-training and Data Augmentation for Efficient Robotic Learning (CoDER), a method that utilizes data augmentation and unsupervised learning to achieve sample-efficient training of real-robot arm policies from sparse rewards.
no code implementations • ICLR 2021 • Ruihan Zhao, Kevin Lu, Pieter Abbeel, Stas Tiomkin
We demonstrate our solution for sample-based unsupervised stabilization on different dynamical control systems and show the advantages of our method by comparing it to the existing VLB approaches.
no code implementations • 4 Dec 2019 • Ruihan Zhao, Stas Tiomkin, Pieter Abbeel
The core idea is to represent the relation between action sequences and future states using a stochastic dynamic model in latent space with a specific form.
no code implementations • 25 Sep 2019 • Ruihan Zhao, Stas Tiomkin, Pieter Abbeel
In this work, we develop a novel approach for the estimation of empowerment in unknown arbitrary dynamics from visual stimulus only, without sampling for the estimation of MIAS.