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Chengyi Cai

5 accepted papers

2026

Prime Once, then Reprogram Locally: An Efficient Alternative to Black-Box Service Model Adaptation

CVPR 2026

Adapting closed-box service models (i.e., APIs) for target tasks typically relies on reprogramming via Zeroth-Order Optimization (ZOO). However, this standard strategy is known for extensive, costly API calls and often suffers from slow, unstable optimization. Furthermore, we observe that this parad

Cited by 0SourcecodeScholar
2025

Attribute-based Visual Reprogramming for Vision-Language Models

ICLR 2025poster

*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 models (e.g., CLIP), existing VR approaches follow the same pipeline used in vision models (e.g., ResNet, ViT), where g…

2025

Understanding Model Reprogramming for CLIP via Decoupling Visual Prompts

ICML 2025poster

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 a trainable noise pattern (i.e., a visual prompt) to input images to facilitate downstream classification. The existi…

Cited by 0SourcePDFScholar
2024

Bayesian-guided Label Mapping for Visual Reprogramming

NeurIPS 2024oral

*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., downstream labels) might be totally different from the labels associated with the pretrained models (i.e., pretraine…

2024

Sample-specific Masks for Visual Reprogramming-based Prompting

ICML 2024spotlight

*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 learning a *small-scale pattern* added into input images instead of tuning considerable parameters within the model. Th…