Search Results for author: Tongyi Cao

Found 12 papers, 0 papers with code

Mitigating Covariate Shift in Misspecified Regression with Applications to Reinforcement Learning

no code implementations22 Jan 2024 Philip Amortila, Tongyi Cao, Akshay Krishnamurthy

A pervasive phenomenon in machine learning applications is distribution shift, where training and deployment conditions for a machine learning model differ.

regression reinforcement-learning

PPAD: Iterative Interactions of Prediction and Planning for End-to-end Autonomous Driving

no code implementations14 Nov 2023 Zhili Chen, Maosheng Ye, Shuangjie Xu, Tongyi Cao, Qifeng Chen

Unlike existing end-to-end autonomous driving frameworks, PPAD models the interactions among ego, agents, and the dynamic environment in an autoregressive manner by interleaving the Prediction and Planning processes at every timestep, instead of a single sequential process of prediction followed by planning.

Autonomous Driving Motion Planning +1

From One to Many: Dynamic Cross Attention Networks for LiDAR and Camera Fusion

no code implementations25 Sep 2022 Rui Wan, Shuangjie Xu, Wei Wu, Xiaoyi Zou, Tongyi Cao

The whole fusion architecture named Dynamic Cross Attention Network (DCAN) exploits multi-level image features and adapts to multiple representations of point clouds, which allows DCA to serve as a plug-in fusion module.

Autonomous Driving

Bootstrap Motion Forecasting With Self-Consistent Constraints

no code implementations ICCV 2023 Maosheng Ye, Jiamiao Xu, Xunnong Xu, Tengfei Wang, Tongyi Cao, Qifeng Chen

Also, to model the multi-modality in motion forecasting, we design a novel self-ensembling scheme to obtain accurate teacher targets to enforce the self-constraints with multi-modality supervision.

Motion Forecasting

Sparse Cross-scale Attention Network for Efficient LiDAR Panoptic Segmentation

no code implementations16 Jan 2022 Shuangjie Xu, Rui Wan, Maosheng Ye, Xiaoyi Zou, Tongyi Cao

Two major challenges of 3D LiDAR Panoptic Segmentation (PS) are that point clouds of an object are surface-aggregated and thus hard to model the long-range dependency especially for large instances, and that objects are too close to separate each other.

Panoptic Segmentation

DRINet++: Efficient Voxel-as-point Point Cloud Segmentation

no code implementations16 Nov 2021 Maosheng Ye, Rui Wan, Shuangjie Xu, Tongyi Cao, Qifeng Chen

The Sparse Feature Encoder extracts the local context information for each point, and the Sparse Geometry Feature Enhancement enhances the geometric properties of a sparse point cloud via multi-scale sparse projection and attentive multi-scale fusion.

Point Cloud Segmentation Segmentation +1

TPCN: Temporal Point Cloud Networks for Motion Forecasting

no code implementations CVPR 2021 Maosheng Ye, Tongyi Cao, Qifeng Chen

We propose the Temporal Point Cloud Networks (TPCN), a novel and flexible framework with joint spatial and temporal learning for trajectory prediction.

Motion Forecasting Trajectory Prediction

HVNet: Hybrid Voxel Network for LiDAR Based 3D Object Detection

no code implementations CVPR 2020 Maosheng Ye, Shuangjie Xu, Tongyi Cao

We present a Hybrid Voxel network that solves this problem by fusing voxel feature encoder (VFE) of different scales at point-wise level and project into multiple pseudo-image feature maps.

3D Object Detection Autonomous Driving +1

Disagreement-Based Combinatorial Pure Exploration: Sample Complexity Bounds and an Efficient Algorithm

no code implementations21 Nov 2017 Tongyi Cao, Akshay Krishnamurthy

We design new algorithms for the combinatorial pure exploration problem in the multi-arm bandit framework.

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