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Yifei Chen

16 accepted papers

2026

Agentic Reinforced Policy Optimization

ICLR 2026poster

Large-scale reinforcement learning with verifiable rewards (RLVR) has proven effective in harnessing the potential of large language models (LLMs) for single-turn reasoning tasks. In realistic reasoning scenarios, LLMs often rely on external tools to assist in task-solving processes. However, curren…

Cited by 0SourcecodeScholar
2026

FDP: A Frequency-Decomposition Preprocessing Pipeline for Unsupervised Anomaly Detection in Brain MRI

AAAI 2026technical

Due to the diversity of brain anatomy and the scarcity of annotated data, supervised anomaly detection for brain MRI remains challenging, driving the development of unsupervised anomaly detection (UAD) approaches. Current UAD methods typically utilize synthetically generated noise perturbations on

Cited by 0SourcePDFScholar
2026

IE-SRGS: An Internal-External Knowledge Fusion Framework for High-Fidelity 3D Gaussian Splatting Super-Resolution

AAAI 2026technical

Reconstructing high-resolution (HR) 3D Gaussian Splatting (3DGS) models from low-resolution (LR) inputs remains challenging due to the lack of fine-grained textures and geometry. Existing methods typically rely on pre-trained 2D super-resolution (2DSR) models to enhance textures, but suffer from 3D

Cited by 0SourcePDFScholar
2026

Toward Effective Tool-Integrated Reasoning via Self-Evolved Preference Learning

ICLR 2026poster

Tool-Integrated Reasoning (TIR) enables large language models (LLMs) to enhance their internal reasoning ability by integrating external tools. However, models with TIR often exhibit suboptimal behaviors, including insufficient tool calls, excessive tool calls, and overthinking after receiving tool…

Cited by 0SourcecodeScholar
2025

Content-free Logical Modification of Large Language Model by Disentangling and Modifying Logic Representation

AAAI 2025technical

Despite extensive training on diverse datasets and alignment with human values, large language models (LLMs) can still generate fallacious outputs. Additionally, the validity of LLM's outputs varies significantly depending on the content. It is crucial to ensure LLMs' logical consistency across diff…

2025

EMRs2CSP : Mining Clinical Status Pathway from Electronic Medical Records

ACL 2025finding

Many current studies focus on extracting tests or treatments when constructing clinical pathways, often neglecting the patient’s symptoms and diagnosis, leading to incomplete diagnostic and therapeutic logic. Therefore, this paper aims to extract clinical pathways from electronic medical records tha…

2025

EmbodiedAgent: A Scalable Hierarchical Approach to Overcome Practical Challenge in Multi-Robot Control

IROS 2025

This paper introduces EmbodiedAgent, a hierarchical framework for heterogeneous multi-robot control. EmbodiedAgent addresses critical limitations of hallucination in impractical tasks. Our approach integrates a next-action prediction paradigm with a structured memory system to decompose tasks into e

Cited by 2SourcecodeScholar
2025

SDAFE: A Dual-filter Stable Diffusion Data Augmentation Method for Facial Expression Recognition

ICASSP 2025accepted

Facial expressions are a powerful medium for conveying emotions. In facial expression recognition (FER) field, the difficulty of collecting specific expressions often leads to class imbalance in mainstream datasets, significantly reducing the classification accuracy of deep neural networks. To addre…

Cited by 0SourceScholar
2025

Toward Robust Early Detection of Alzheimer's Disease via an Integrated Multimodal Learning Approach

ICASSP 2025accepted

Alzheimer’s Disease (AD) is a complex neurodegenerative disorder marked by memory loss, executive dysfunction, and personality changes. Early diagnosis is challenging due to subtle symptoms and varied presentations, often leading to misdiagnosis with traditional unimodal diagnostic methods due to th…

Cited by 0SourceScholar
2024

Align Before Adapt: Leveraging Entity-to-Region Alignments for Generalizable Video Action Recognition

CVPR 2024poster

Large-scale visual-language pre-trained models have achieved significant success in various video tasks. However most existing methods follow an "adapt then align" paradigm which adapts pre-trained image encoders to model video-level representations and utilizes one-hot or text embedding of the acti…

Cited by 9SourcePDFScholar
2024

CRM: Single Image to 3D Textured Mesh with Convolutional Reconstruction Model

ECCV 2024poster

"Feed-forward 3D generative models like the Large Reconstruction Model (LRM) [?] have demonstrated exceptional generation speed. However, the transformer-based methods do not leverage the geometric priors of the triplane component in their architecture, often leading to sub-optimal quality given the…

2024

Explosive Legged Robotic Hopping: Energy Accumulation and Power Amplification via Pneumatic Augmentation

IROS 2024poster

We present a novel pneumatic augmentation to traditional electric motor-actuated legged robot to increase intermittent power density to perform infrequent explosive hopping behaviors. The pneumatic system is composed of a pneumatic pump, a tank, and a pneumatic actuator. The tank is charged up by th…

Cited by 0SourceScholar
2024

Generalizable Whole Slide Image Classification with Fine-Grained Visual-Semantic Interaction

CVPR 2024poster

Whole Slide Image (WSI) classification is often formulated as a Multiple Instance Learning (MIL) problem. Recently Vision-Language Models (VLMs) have demonstrated remarkable performance in WSI classification. However existing methods leverage coarse-grained pathogenetic descriptions for visual repre…

2024

INTERS: Unlocking the Power of Large Language Models in Search with Instruction Tuning

ACL 2024long

Large language models (LLMs) have demonstrated impressive capabilities in various natural language processing tasks. Despite this, their application to information retrieval (IR) tasks is still challenging due to the infrequent occurrence of many IR-specific concepts in natural language. While promp…

2022

PPT: Token-Pruned Pose Transformer for Monocular and Multi-View Human Pose Estimation

ECCV 2022poster

"Recently, the vision transformer and its variants have played an increasingly important role in both monocular and multi-view human pose estimation. Considering image patches as tokens, transformers can model the global dependencies within the entire image or across images from other views. However…