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Yuyang Liu

20 accepted papers

2026

AsFT: Anchoring Safety During LLM Fine-Tuning Within Narrow Safety Basin

AAAI 2026technical

Fine-tuning large language models (LLMs) improves performance but introduces critical safety vulnerabilities: even minimal harmful data can severely compromise safety measures. We observe that perturbations orthogonal to the alignment direction—defined by weight differences between aligned (safe) an

Cited by 23SourcePDFScholar
2026

Bridging the Gap in Autonomous Science: The Corpus and Benchmark for Biological Protocol Reasoning

ICML 2026poster

The realization of autonomous scientific experimentation is currently limited by LLMs' struggle to grasp the strict procedural logic and accuracy required by biological protocols. To address this fundamental challenge, we present **BioProBench**, a comprehensive resource for procedural reasoning in …

Cited by 0SourceScholar
2026

Clipping Bottleneck: Stabilizing RLVR via Stochastic Recovery of Near-Boundary Signals

ICML 2026poster

Reinforcement Learning with Verifiable Rewards (RLVR) has emerged as a central paradigm for scaling LLM reasoning, yet its optimization often suffers from training instability and suboptimal convergence. Through a systematic dissection of the GRPO-based objective, we reveal that the rigid clipping d…

Cited by 0SourceScholar
2026

Look-Back: Implicit Visual Re-focusing in MLLM Reasoning

AAAI 2026technical

Multimodal Large Language Models (MLLMs) have achieved remarkable progress in multimodal reasoning. However, they often excessively rely on textual information during the later stages of inference, neglecting the crucial integration of visual input. Current methods typically address this by explicit

Cited by 0SourcePDFScholar
2026

One-Way Policy Optimization for Self-Evolving LLMs

ICML 2026poster

Reinforcement Learning with Verifiable Rewards (RLVR) has become a promising paradigm for scaling reasoning capabilities of Large Language Models (LLMs). However, the sparsity of binary verifier rewards often leads to low efficiency and optimization instability. To stabilize training, existing metho…

Cited by 0SourceScholar
2026

OrionEdit: Bridging Reference and Source Images for Generalized Cross-Image Editing

CVPR 2026

Multimodal image synthesis has made significant progress, yet most editing methods still rely on textual instructions, which are less direct than visual guidance. Recently, a new paradigm edits one image using another as reference, enabling more intuitive manipulation through visual exemplars. We fo

Cited by 0SourcecodeScholar
2026

Scaling Up AI-Generated Image Detection with Generator-Aware Prototypes

CVPR 2026

The pursuit of a universal AI-generated image (AIGI) detector often relies on aggregating data from numerous generators to improve generalization. However, this paper identifies a paradoxical phenomenon we term the "Benefit then Conflict" dilemma, where detector performance stagnates and eventually

Cited by 0SourcecodeScholar
2026

TimeRewarder: Learning Dense Reward from Passive Videos via Frame-wise Temporal Distance

ICML 2026spotlight

Designing dense rewards is crucial for reinforcement learning (RL), yet in robotics it often demands extensive manual effort and lacks scalability. One promising solution is to view task progress as a dense reward signal, as it quantifies the degree to which actions advance the system toward task co…

Cited by 6SourceScholar
2026

Translating Flow to Policy via Hindsight Online Imitation

ICLR 2026poster

Recent advances in hierarchical robot systems leverage a high-level planner to propose task plans and a low-level policy to generate robot actions. This design allows training the planner on action-free or even non-robot data sources (e.g., videos), providing transferable high-level guidance. Nevert…

Cited by 0SourceScholar
2025

PiCO: Peer Review in LLMs based on Consistency Optimization

ICLR 2025poster

Existing large language models (LLMs) evaluation methods typically focus on testing the performance on some closed-environment and domain-specific benchmarks with human annotations. In this paper, we explore a novel unsupervised evaluation direction, utilizing peer-review mechanisms to measure LLMs…

Cited by 3SourcePDFScholar
2024

Cs2K: Class-specific and Class-shared Knowledge Guidance for Incremental Semantic Segmentation

ECCV 2024poster

"Incremental semantic segmentation endeavors to segment newly encountered classes while maintaining knowledge of old classes. However, existing methods either 1) lack guidance from class-specific knowledge (i.e., old class prototypes), leading to a bias towards new classes, or 2) constrain class-sha…

Cited by 1SourcePDFScholar
2024

Imitation Learning from Observation with Automatic Discount Scheduling

ICLR 2024poster

Humans often acquire new skills through observation and imitation. For robotic agents, learning from the plethora of unlabeled video demonstration data available on the Internet necessitates imitating the expert without access to its action, presenting a challenge known as Imitation Learning from Ob…

2024

Resurrecting Old Classes with New Data for Exemplar-Free Continual Learning

CVPR 2024poster

Continual learning methods are known to suffer from catastrophic forgetting a phenomenon that is particularly hard to counter for methods that do not store exemplars of previous tasks. Therefore to reduce potential drift in the feature extractor existing exemplar-free methods are typically evaluated…

2023

3D Human Pose Lifting with Grid Convolution

AAAI 2023technical

Existing lifting networks for regressing 3D human poses from 2D single-view poses are typically constructed with linear layers based on graph-structured representation learning. In sharp contrast to them, this paper presents Grid Convolution (GridConv), mimicking the wisdom of regular convolution op…

2023

Augmented Box Replay: Overcoming Foreground Shift for Incremental Object Detection

ICCV 2023poster

In incremental learning, replaying stored samples from previous tasks together with current task samples is one of the most efficient approaches to address catastrophic forgetting. However, unlike incremental classification, image replay has not been successfully applied to incremental object detect…

Cited by 32PDFcodeScholar
2023

FeCAM: Exploiting the Heterogeneity of Class Distributions in Exemplar-Free Continual Learning

NeurIPS 2023poster

Exemplar-free class-incremental learning (CIL) poses several challenges since it prohibits the rehearsal of data from previous tasks and thus suffers from catastrophic forgetting. Recent approaches to incrementally learning the classifier by freezing the feature extractor after the first task have g…

2022

Class-Incremental Gesture Recognition Learning with Out-of-Distribution Detection

IROS 2022poster

Gesture recognition is a popular human-computer interaction technology, which has been widely applied in many fields (e.g., autonomous driving, medical care, VR and AR). However, 1) most existing gesture recognition methods focus on the fixed recognition scenarios with several gestures, which could…

Cited by 13SourceScholar
2021

Defending Against Universal Adversarial Patches by Clipping Feature Norms

ICCV 2021poster

Physical-world adversarial attacks based on universal adversarial patches have been proved to be able to mislead deep convolutional neural networks (CNNs), exposing the vulnerability of real-world visual classification systems based on CNNs. In this paper, we empirically reveal and mathematically ex…

Cited by 37PDFScholar
2021

Generative Partial Visual-Tactile Fused Object Clustering

AAAI 2021technical

Visual-tactile fused sensing for object clustering has achieved significant progresses recently, since the involvement of tactile modality can effectively improve clustering performance. However, the missing data (i.e., partial data) issues always happen due to occlusion and noises during the data c…

Cited by 17SourcePDFScholar
2020

CSCL: Critical Semantic-Consistent Learning for Unsupervised Domain Adaptation

ECCV 2020poster

Unsupervised domain adaptation without consuming annotation process for unlabeled target data attracts appealing interests in semantic segmentation. However, 1) existing methods neglect that not all semantic representations across domains are transferable, which cripples domain-wise transfer with un…

Cited by 56SourcePDFScholar