NePTune: A Neuro-Pythonic Framework for Tunable Compositional Reasoning on Vision-Language
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arXiv
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| Format: | Preprint |
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2025
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| author | Kamali, Danial Kordjamshidi, Parisa |
| author_facet | Kamali, Danial Kordjamshidi, Parisa |
| contents | Modern Vision-Language Models (VLMs) have achieved impressive performance in various tasks, yet they often struggle with compositional reasoning, the ability to decompose and recombine concepts to solve novel problems. While neuro-symbolic approaches offer a promising direction, they are typically constrained by crisp logical execution or predefined predicates, which limit flexibility. In this work, we introduce NePTune, a neuro-symbolic framework that overcomes these limitations through a hybrid execution model that integrates the perception capabilities of foundation vision models with the compositional expressiveness of symbolic reasoning. NePTune dynamically translates natural language queries into executable Python programs that blend imperative control flow with soft logic operators capable of reasoning over VLM-generated uncertainty. Operating in a training-free manner, NePTune, with a modular design, decouples perception from reasoning, yet its differentiable operations support fine-tuning. We evaluate NePTune on multiple visual reasoning benchmarks and various domains, utilizing adversarial tests, and demonstrate a significant improvement over strong base models, as well as its effective compositional generalization and adaptation capabilities in novel environments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_25757 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | NePTune: A Neuro-Pythonic Framework for Tunable Compositional Reasoning on Vision-Language Kamali, Danial Kordjamshidi, Parisa Artificial Intelligence Computation and Language Computer Vision and Pattern Recognition Symbolic Computation Modern Vision-Language Models (VLMs) have achieved impressive performance in various tasks, yet they often struggle with compositional reasoning, the ability to decompose and recombine concepts to solve novel problems. While neuro-symbolic approaches offer a promising direction, they are typically constrained by crisp logical execution or predefined predicates, which limit flexibility. In this work, we introduce NePTune, a neuro-symbolic framework that overcomes these limitations through a hybrid execution model that integrates the perception capabilities of foundation vision models with the compositional expressiveness of symbolic reasoning. NePTune dynamically translates natural language queries into executable Python programs that blend imperative control flow with soft logic operators capable of reasoning over VLM-generated uncertainty. Operating in a training-free manner, NePTune, with a modular design, decouples perception from reasoning, yet its differentiable operations support fine-tuning. We evaluate NePTune on multiple visual reasoning benchmarks and various domains, utilizing adversarial tests, and demonstrate a significant improvement over strong base models, as well as its effective compositional generalization and adaptation capabilities in novel environments. |
| title | NePTune: A Neuro-Pythonic Framework for Tunable Compositional Reasoning on Vision-Language |
| topic | Artificial Intelligence Computation and Language Computer Vision and Pattern Recognition Symbolic Computation |
| url | https://arxiv.org/abs/2509.25757 |