Improved Constrained Generation by Bridging Pretrained Generative Models
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866917319426441216 |
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| author | Liang, Xiaoxuan Naderiparizi, Saeid Liu, Yunpeng Zwartsenberg, Berend Wood, Frank |
| author_facet | Liang, Xiaoxuan Naderiparizi, Saeid Liu, Yunpeng Zwartsenberg, Berend Wood, Frank |
| contents | Constrained generative modeling is fundamental to applications such as robotic control and autonomous driving, where models must respect physical laws and safety-critical constraints. In real-world settings, these constraints rarely take the form of simple linear inequalities, but instead complex feasible regions that resemble road maps or other structured spatial domains. We propose a constrained generation framework that generates samples directly within such feasible regions while preserving realism. Our method fine-tunes a pretrained generative model to enforce constraints while maintaining generative fidelity. Experimentally, our method exhibits characteristics distinct from existing fine-tuning and training-free constrained baselines, revealing a new compromise between constraint satisfaction and sampling quality. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_06742 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Improved Constrained Generation by Bridging Pretrained Generative Models Liang, Xiaoxuan Naderiparizi, Saeid Liu, Yunpeng Zwartsenberg, Berend Wood, Frank Machine Learning Artificial Intelligence Robotics Constrained generative modeling is fundamental to applications such as robotic control and autonomous driving, where models must respect physical laws and safety-critical constraints. In real-world settings, these constraints rarely take the form of simple linear inequalities, but instead complex feasible regions that resemble road maps or other structured spatial domains. We propose a constrained generation framework that generates samples directly within such feasible regions while preserving realism. Our method fine-tunes a pretrained generative model to enforce constraints while maintaining generative fidelity. Experimentally, our method exhibits characteristics distinct from existing fine-tuning and training-free constrained baselines, revealing a new compromise between constraint satisfaction and sampling quality. |
| title | Improved Constrained Generation by Bridging Pretrained Generative Models |
| topic | Machine Learning Artificial Intelligence Robotics |
| url | https://arxiv.org/abs/2603.06742 |