Search Results for author: Yifei Liu

Found 26 papers, 10 papers with code

Adapting World Models with Latent-State Dynamics Residuals

no code implementations3 Apr 2025 JB Lanier, KyungMin Kim, Armin Karamzade, Yifei Liu, Ankita Sinha, Kat He, Davide Corsi, Roy Fox

Simulation-to-reality reinforcement learning (RL) faces the critical challenge of reconciling discrepancies between simulated and real-world dynamics, which can severely degrade agent performance.

MuJoCo Reinforcement Learning (RL)

Guiding Human-Object Interactions with Rich Geometry and Relations

no code implementations26 Mar 2025 Mengqing Xue, Yifei Liu, Ling Guo, Shaoli Huang, Changxing Ding

Human-object interaction (HOI) synthesis is crucial for creating immersive and realistic experiences for applications such as virtual reality.

Human-Object Interaction Detection Motion Generation +2

Discovering Influential Neuron Path in Vision Transformers

no code implementations12 Mar 2025 Yifan Wang, Yifei Liu, Yingdong Shi, Changming Li, Anqi Pang, Sibei Yang, Jingyi Yu, Kan Ren

In this paper, we investigate the significance of influential neuron paths within vision Transformers, which is a path of neurons from the model input to output that impacts the model inference most significantly.

Image Classification

SGA-INTERACT: A 3D Skeleton-based Benchmark for Group Activity Understanding in Modern Basketball Tactic

1 code implementation9 Mar 2025 Yuchen Yang, Wei Wang, Yifei Liu, Linfeng Dong, Hao Wu, Mingxin Zhang, Zhihang Zhong, Xiao Sun

This framework aligns with the feature extraction paradigm in RGB-based methods, enabling direct evaluation of RGB-based models on skeleton-based benchmarks.

Group Activity Recognition Temporal Group Activity Localization

rStar-Math: Small LLMs Can Master Math Reasoning with Self-Evolved Deep Thinking

3 code implementations8 Jan 2025 Xinyu Guan, Li Lyna Zhang, Yifei Liu, Ning Shang, Youran Sun, Yi Zhu, Fan Yang, Mao Yang

We present rStar-Math to demonstrate that small language models (SLMs) can rival or even surpass the math reasoning capability of OpenAI o1, without distillation from superior models.

Math

MaskGaussian: Adaptive 3D Gaussian Representation from Probabilistic Masks

1 code implementation29 Dec 2024 Yifei Liu, Zhihang Zhong, Yifan Zhan, Sheng Xu, Xiao Sun

While 3D Gaussian Splatting (3DGS) has demonstrated remarkable performance in novel view synthesis and real-time rendering, the high memory consumption due to the use of millions of Gaussians limits its practicality.

3DGS Novel View Synthesis

BioTD: an online database of biotoxins

no code implementations28 Dec 2024 Gaoang Wang, Hang Wu, Yang Liao, Zhen Chen, Qing Zhou, Wenxing Wang, Yifei Liu, Yilin Wang, Meijing Wu, Ruiqi Xiang, Yuntao Yu, Xi Zhou, Feng Zhu, Zhonghua Liu, Tingjun Hou

Biotoxins, mainly produced by venomous animals, plants and microorganisms, exhibit high physiological activity and unique effects such as lowering blood pressure and analgesia.

Drug Design Drug Discovery

VPTQ: Extreme Low-bit Vector Post-Training Quantization for Large Language Models

1 code implementation25 Sep 2024 Yifei Liu, Jicheng Wen, Yang Wang, Shengyu Ye, Li Lyna Zhang, Ting Cao, Cheng Li, Mao Yang

Due to the redundancy in LLM weights, recent research has focused on pushing weight-only quantization to extremely low-bit (even down to 2 bits).

Quantization

Xinyu: An Efficient LLM-based System for Commentary Generation

no code implementations21 Aug 2024 Yiquan Wu, Bo Tang, Chenyang Xi, Yu Yu, Pengyu Wang, Yifei Liu, Kun Kuang, Haiying Deng, Zhiyu Li, Feiyu Xiong, Jie Hu, Peng Cheng, Zhonghao Wang, Yi Wang, Yi Luo, MingChuan Yang

To address the advanced requirements, we present an argument ranking model for arguments and establish a comprehensive evidence database that includes up-to-date events and classic books, thereby strengthening the substantiation of the evidence with retrieval augmented generation (RAG) technology.

RAG Text Generation

Multibeam Hybrid Transmitarray Based on Polarization Rotating Metasurface With Reconfigurable Bidirectional Radiation

no code implementations2 Aug 2024 Fan Qin, Yifei Liu, Chao Gu, Linfeng Zeng, Wenchi Cheng, Hailin Zhang, Steven Gao

To accomplish the reconfiguration of both unidirectional and bidirectional radiation states in the +z, -z, and +/-z directions, a polarization switchable multi-feed array (MFA) is placed at the focal plane between the TA and FTA, radiating x-polarization, y-polarization, and 45-degree oblique polarization waves, respectively.

Enabling Visual Recognition at Radio Frequency

no code implementations29 May 2024 Haowen Lai, Gaoxiang Luo, Yifei Liu, Mingmin Zhao

This paper introduces PanoRadar, a novel RF imaging system that brings RF resolution close to that of LiDAR, while providing resilience against conditions challenging for optical signals.

object-detection Object Detection +2

Towards Variable and Coordinated Holistic Co-Speech Motion Generation

no code implementations CVPR 2024 Yifei Liu, Qiong Cao, Yandong Wen, Huaiguang Jiang, Changxing Ding

This paper addresses the problem of generating lifelike holistic co-speech motions for 3D avatars, focusing on two key aspects: variability and coordination.

Motion Generation Quantization

Enhancing Court View Generation with Knowledge Injection and Guidance

1 code implementation7 Mar 2024 Ang Li, Yiquan Wu, Yifei Liu, Fei Wu, Ming Cai, Kun Kuang

Court View Generation (CVG) is a challenging task in the field of Legal Artificial Intelligence (LegalAI), which aims to generate court views based on the plaintiff claims and the fact descriptions.

Text Generation

Boosting Data Analytics With Synthetic Volume Expansion

1 code implementation27 Oct 2023 Xiaotong Shen, Yifei Liu, Rex Shen

This article explores the effectiveness of statistical methods on synthetic data and the privacy risks of synthetic data.

Sentiment Analysis Synthetic Data Generation +1

Precedent-Enhanced Legal Judgment Prediction with LLM and Domain-Model Collaboration

no code implementations13 Oct 2023 Yiquan Wu, Siying Zhou, Yifei Liu, Weiming Lu, Xiaozhong Liu, Yating Zhang, Changlong Sun, Fei Wu, Kun Kuang

Precedents are the previous legal cases with similar facts, which are the basis for the judgment of the subsequent case in national legal systems.

FireFly A Synthetic Dataset for Ember Detection in Wildfire

1 code implementation6 Aug 2023 Yue Hu, Xinan Ye, Yifei Liu, Souvik Kundu, Gourav Datta, Srikar Mutnuri, Namo Asavisanu, Nora Ayanian, Konstantinos Psounis, Peter Beerel

This paper presents "FireFly", a synthetic dataset for ember detection created using Unreal Engine 4 (UE4), designed to overcome the current lack of ember-specific training resources.

Diversity object-detection +1

Revisiting Token Pruning for Object Detection and Instance Segmentation

1 code implementation12 Jun 2023 Yifei Liu, Mathias Gehrig, Nico Messikommer, Marco Cannici, Davide Scaramuzza

In relation to the dense counterpart that utilizes all tokens, our method realizes an increase in inference speed, achieving up to 34% faster performance for the entire network and 46% for the backbone.

Image Classification Instance Segmentation +4

Perturbation-Assisted Sample Synthesis: A Novel Approach for Uncertainty Quantification

1 code implementation30 May 2023 Yifei Liu, Rex Shen, Xiaotong Shen

The framework focuses on uncertainty quantification in complex data scenarios, particularly involving unstructured data while utilizing deep learning models.

Diversity Image Generation +4

Crop mapping in the small sample/no sample case: an approach using a two-level cascade classifier and integrating domain knowledge

no code implementations26 Dec 2022 Yunze Zang, Yifei Liu, Xuehong Chen, Anqi Li, Yichen Zhai, Shijie Li, Luling Liu, Chuanhai Zhu, Ruilin Chen, Shupeng Li, Na Jie

To solve this problem, a crop mapping method in the small sample/no sample case that integrating domain knowledge and using a cascaded classification framework that combine a weak classifier learned from samples with strong features and a strong classifier trained by samples with weak feature was proposed.

Management valid

Multi-objective Explanations of GNN Predictions

no code implementations29 Nov 2021 Yifei Liu, Chao Chen, Yazheng Liu, Xi Zhang, Sihong Xie

We design a user study to investigate such joint effects and use the findings to design a multi-objective optimization (MOO) algorithm to find Pareto optimal explanations that are well-balanced in simulatability and counterfactual.

counterfactual Decision Making +2

Rigorous Explanation of Inference on Probabilistic Graphical Models

no code implementations21 Apr 2020 Yifei Liu, Chao Chen, Xi Zhang, Sihong Xie

There is no existing method to rigorously attribute the inference outcomes to the contributing factors of the graphical models.

Attribute Decision Making

Scalable Explanation of Inferences on Large Graphs

no code implementations13 Aug 2019 Chao Chen, Yifei Liu, Xi Zhang, Sihong Xie

Probabilistic inferences distill knowledge from graphs to aid human make important decisions.

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