arXiv AI

Probabilistic Model Checking of Autoregressive Neural Sequence Models

The paper presents a method for probabilistic model checking of autoregressive neural sequence models. It extracts a discrete-time Markov chain from the model’s token generation, verifies PCTL specifications with PRISM, and aggregates verdicts into a coverage curve over the input space. The approach includes a soundness theorem, a counterexample-guided refinement loop, and a maximum-likelihood algorithm to find the most probable falsifying trace, demonstrated on GPT‑2 and a SMILES molecular generator.

arXiv AI
5d ago

ProCerDCL: Query-Efficient Black-Box Probabilistic Verification of Deep Learning Compiler Optimization

ProCerDCL is a query‑efficient framework for black‑box probabilistic verification of deep learning compiler optimizations. It uses a single sequential test to decide whether the violation probability of a binary property oracle is below a threshold, above a higher threshold plus a margin, or inconclusive, with bounded error probabilities. Applied to TorchInductor and TensorRT, it achieves higher sampling efficiency and provides diagnostic verdicts on model semantic consistency across 24 tasks.

By Zexin Li, Weibo Zhang, Linyi Li, Arvind Easwaran, Simin Chen
arXiv AI
Aug 3

ModelEquivBench: Certifying Multi-Relational Evaluation of LLM-Generated Optimization Models

arXiv:2607. 29431v1 Announce Type: new Abstract: Large language models increasingly generate optimization models from natural language, but existing evaluation often reduces a generated model and its ground truth to a single equivalent/not-equivalent verdict or an execution-success rate--labels that are neither independently checkable nor faithful to the multiple distinct senses in which two formulations can agree.

By Penglin Zhu, Jungang Xu
arXiv AI
Oct 9

Balancing Reference Guidance and Free Generation in Trajectory Rollouts for Reasoning RL

The paper introduces Adaptive Reference Guidance (ARG), a method that balances using a verified reference solution with free generation in trajectory rollouts for reasoning reinforcement learning. ARG selects a prefix of the reference to guide the model, continuing from it only if the resulting trajectory passes verification, otherwise falling back to the reference. Experiments on Qwen3-4B and Qwen3-8B across five mathematical reasoning benchmarks demonstrate that ARG achieves the highest aggregate pass@12 while maintaining competitive average sampled accuracy.

By Hanyu Wang, Nakul Agarwal, Hossein Nourkhiz Mahjoub, Ehsan Moradi Pari, Makoto Fukushima, Jinghui Chen, Vaishnav Tadiparthi
Hugging Face Trending Papers
Jun 1

Off-the-Shelf LLMs as Process Scorers: Training-Free Alternative to PRMs for Mathematical Reasoning

Selecting the best response from multiple small-model samples using a stronger scorer is a simple inference-time strategy, but fails when the small model has already committed to incorrect reasoning paths. PRM guided search avoids this by scoring candidate continuations during generation, but requires a reward model trained with step-level labels.

arXiv AI
2d ago

PRISM: Pushing the Frontier of Deep Think via Process Reward Model-Guided Inference

PRISM is a new inference algorithm for DEEPTHINK systems that uses a Process Reward Model (PRM) to guide step‑level verification, resampling, and aggregation of candidate solutions. By concentrating computation on higher‑quality reasoning while preserving diversity, PRISM improves performance on complex mathematical and scientific tasks, achieving 90.0%, 75.4%, and 71.4% on AIME25, HMMT25, and GPQA Diamond with gpt‑oss‑20b and outperforming larger models. The method also provides consistent net‑directional correction during refinement and remains accurate even when the initial population has few correct candidates.

By Rituraj Sharma, Weiyuan Chen, Noah Provenzano, Tu Vu