activity
20242026
collaborators

9 papers

cs.AI2026

When Should a VLM Look? Paying Only for Visual Calls That Were Needed and Used

Kunyu Peng, Junming Liu, Ruiqi He +3

Vision-language agents that crop and zoom are trained with rewards that credit a successful tool call, yet a successful call does not show that the model needed to look or used the…

cs.LG2026

CARPRT: Class-Aware Zero-Shot Prompt Reweighting for Black-Box Vision-Language Models

Ruijiang Dong, Zesheng Ye, Jianzhong Qi +4

Pre-trained vision-language models (VLMs) enable zero-shot image classification by computing the similarity score between an image and textual descriptions, typically formed by ins…

cs.LG2026

Per-parameter Task Arithmetic for Unlearning in Large Language Models

Chengyi Cai, Zesheng Ye, Jiangchao Yao +5

In large language model (LLM) unlearning, private information is required to be removed. Task arithmetic unlearns by subtracting a specific task vector (TV)--defined as the paramet…

cs.LG2026

Visual-Guided Key-Token Regularization for Multimodal Large Language Model Unlearning

Chengyi Cai, Zesheng Ye, Peike Li +3

Unlearning in Multimodal Large Language Models (MLLMs) prevents the model from revealing private information when queried about target images. Existing MLLM unlearning methods larg…

cs.LG2025

Neural Network Reprogrammability: A Unified Theme on Model Reprogramming, Prompt Tuning, and Prompt Instruction

Zesheng Ye, Chengyi Cai, Ruijiang Dong +4

As large-scale pre-trained foundation models continue to expand in size and capability, efficiently adapting them to specific downstream tasks has become increasingly critical. Des…

cs.LG2025

Understanding Model Reprogramming for CLIP via Decoupling Visual Prompts

Chengyi Cai, Zesheng Ye, Lei Feng +2

Model reprogramming adapts pretrained models to downstream tasks by modifying only the input and output spaces. Visual reprogramming (VR) is one instance for vision tasks that adds…

cs.CV2025

Attribute-based Visual Reprogramming for Vision-Language Models

Chengyi Cai, Zesheng Ye, Lei Feng +2

Visual reprogramming (VR) reuses pre-trained vision models for downstream image classification tasks by adding trainable noise patterns to inputs. When applied to vision-language m…

cs.LG2024

Bayesian-guided Label Mapping for Visual Reprogramming

Chengyi Cai, Zesheng Ye, Lei Feng +2

Visual reprogramming (VR) leverages the intrinsic capabilities of pretrained vision models by adapting their input or output interfaces to solve downstream tasks whose labels (i.e.…

cs.LG2024

Sample-specific Masks for Visual Reprogramming-based Prompting

Chengyi Cai, Zesheng Ye, Lei Feng +2

Visual reprogramming (VR) is a prompting technique that aims to re-purpose a pre-trained model (e.g., a classifier on ImageNet) to target tasks (e.g., medical data prediction) by l…