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#artificial intelligence Preprint Oct 2026

CoCA: Criterion-Aware Credit Assignment for Rubric-Based Reinforcement Learning

Rubric-based reinforcement learning (RL) evaluates responses against explicit criteria to construct rewards, offering a viable way to train large language models on open-ended tasks. However, standard methods compress criterion-level feedback into scalar rewards and assign uniform token advantages, leaving structured r...

Guang-Cheng Zhu, Ying-Fan Ma, Xing Zheng et al. · 0 citations
#artificial intelligence Preprint Oct 2026

TSRL: Trigger-based Supervised Reinforcement Learning for Continual Agent Training

Large language model (LLM) agents excel at complex, multi-step tasks but suffer from catastrophic forgetting during continual learning--acquiring new skills often degrades previously mastered capabilities. Existing post-training paradigms face a fundamental trade-off: Supervised Fine-Tuning (SFT) is sample-efficient bu...

Yu-Qian Fu, Kai-Wen Jiang, Zi-Jun Song et al. · 0 citations
#artificial intelligence Preprint Open access Oct 2026

Where Small Mistakes Matter: Quantifying State Criticality for Imitation Learning

Imitation learning typically treats every demonstration state as equally important, optimizing a behavior-cloning objective uniformly across the dataset. Yet not all states are created equal: in a small number of critical states, even a slight deviation from the expert action can lead to a failure, while in many other...

Yusuf Umut Ciftci, Joonwon Kang, Ajay Suresha Sathya et al. · 0 citations
#artificial intelligence Preprint Oct 2026

LeanPRM: Lean-Grounded Process Supervision for Natural Language Proof Verification

AI systems now write long and difficult mathematical proofs, and checking their step-by-step validity is becoming a bottleneck. A learned verifier could check proofs cheaply, but training one requires a correctness label on every step, and such labels are hard to obtain for open-ended proofs. Existing methods take them...

Rodney Lafuente-Mercado, Salman Rahman, Jing-Yan Shen et al. · 0 citations
#artificial intelligence Preprint Oct 2026

zPocket: Better Pocket Finding with Frozen Co-Folding Features

Identifying protein-ligand binding sites (pockets) is important for understanding protein function and developing drugs. However, no public method has leveraged co-folding models for novel pocket prediction; furthermore, this task lacks a suitable benchmark as existing benchmarks are within the training distribution of...

Tally Portnoi, Allison M. Keys, B. DiFrancesco et al. · 0 citations
#artificial intelligence Preprint Open access Oct 2026

LatentRiskBench: Measuring State-Dependent Risks in Enterprise Agents

Enterprise agents face safety risks that cannot be determined from individual actions alone. Existing safety benchmarks largely evaluate action-local risks, overlooking failures whose safety depends on workflow state. In such state-dependent risks, the same action may be safe in one context but violate policy in anothe...

Jingyue Cong, Estrid He, Zhuang Li et al. · 0 citations
#artificial intelligence Preprint Oct 2026

Dynamic K-Head: Difficulty-Supervised Budget Selection for Continuous Latent Reasoning

Chain-of-thought (CoT) improves reasoning but incurs substantial autoregressive rationale cost. Continuous CoT moves intermediate computation into recurrent hidden states, yet typically uses a fixed number of updates even though the best budget varies across questions and accuracy need not improve monotonically with $K...

Ying Li, Yu-Qian Chen, Sixuan Li et al. · 0 citations
#artificial intelligence Preprint Open access Oct 2026

DeltaTTG: Training Multi-Turn Agents with a Token-to-Go Progress Meter

Reinforcement learning with verifiable rewards (RLVR) for multi-turn agents relies on sparse terminal rewards that say little about individual steps. Within-group step comparisons depend on reliable state matching and sufficiently diverse sampled outcomes, while direct step scoring may require costly external evaluator...

Xuyan Ye, Xiyan Fu, Shengda Fan et al. · 0 citations
#artificial intelligence Preprint Open access Oct 2026

The Tokens Strike Back: Safety-Aware Denoising with Directional Embedding-based Revision

The Safety-Aware Denoiser (SAD) is a recent, training-free, safety-guidance framework for text diffusion models. During inference, SAD steers text samples toward safe regions of the token probability space. In this paper, we propose $\mathit{SADDER}$ (Safety-Aware Denoising with Directional Embedding-based Revision), w...

Amman Yusuf, Jiwoo Shin, Ruizhi Deng et al. · 0 citations
#artificial intelligence Preprint Open access Oct 2026

RELAY: Selective Self-Distillation with Adaptive Hand-off for Rubric-Based Reinforcement Learning

Rubric-based reinforcement learning grades a response against many written criteria but collapses them into one reward, which discards the detail the rubric carries and gives no GRPO reward gradient when a group's responses tie. A frozen teacher that reads the rubric as privileged context provides token-level supervisi...

Kunwang Zheng, Xinyu Sun, Yu Cao et al. · 0 citations
#artificial intelligence Preprint Oct 2026

Morphology-aware deep learning predicts colorectal cancer survival from whole-slide images

Background: Five-year survival prediction from hematoxylin-and-eosin whole-slide images could support risk stratification, but the task is weakly supervised, and the tissue morphologies carrying prognostic information remain incompletely characterized. Methods: We conducted a retrospective secondary analysis using TCGA...

Hikmat Khan, M. Gurcan, Anil Parwani et al. · 0 citations
#artificial intelligence Preprint Oct 2026

Revisiting the 16x Pretraining Compute Gap between Diffusion and Autoregressive Language Models

Diffusion language models (DLMs) have attracted wide attention for their fast, parallel decoding, but they are believed to be far less efficient to train than autoregressive language models (ARMs): a widely cited study reports that a DLM needs roughly 16x the training compute of an ARM to match its likelihood, a figure...

Guang-Han Wang, B. He, Zhan Shi et al. · 0 citations

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MIT News · Artificial Intelligence Oct 28, 2026

Making machines that can listen

Professor Paris Smaragdis develops computers with superhuman hearing for applications like speech recognition, music understanding, and environmental monitoring.

MIT News · Artificial Intelligence Oct 23, 2026

Q&A: How AI came to model the “messy” human mind

Assistant Professor Benjamin Lindquist studies how engineers deliberately injected randomness into early AI, giving rise to deep-learning models that sometimes hallucinate.

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