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15,848 papers

#artificial intelligence Preprint Oct 2026

DoubtLess: Training-Free Contrastive Decoding for Efficient Reasoning

Reasoning models achieve strong performance through long chains of thought (CoT), but often spend more tokens than needed to solve a problem. Existing ways to shorten the CoT require additional training for each model, add a fixed steering vector to the model's hidden states, or use decoding heuristics such as stopping...

Minghao Luo, Liang Chen · 0 citations
#artificial intelligence Preprint Open access Oct 2026

Hybrid Reasoning Agents

How can we build an agent that thinks beyond human language, yet still acts through it in the external environment? Modern LLM agents still reason and interact through text, while latent reasoning offers an efficient internal medium but lacks native tool access and reasoning transparency. We bridge these two directions...

Jiaru Zou, Yunzhe Qi, Sirui Chen et al. · 0 citations
#artificial intelligence Preprint Oct 2026

Two Clocks: Why Larger Rollout Batches Learn Slower but Fail on Schedule in Reinforcement Learning with Verifiable Rewards

Reinforcement learning with verifiable rewards (RLVR) relies on costly model-generated responses, motivating larger rollout batches and square-root learning-rate scaling. Reported to approximately preserve progress per sample with one optimizer step per rollout, this rule is less understood in practical multi-step trai...

Yuan-Te Li, Jun-Wei Quan, Kai Qiu et al. · 0 citations
#artificial intelligence Preprint Open access Oct 2026

Fast Rates for Offline Q-Learning with KL Regularization

This paper investigates offline Q-learning for finite-horizon Markov decision processes with Kullback-Leibler (KL) regularization. Recent studies have shown that KL regularization can yield fast rates in offline decision-making problems. However, it remains unclear whether Q-learning, which adopts incremental stochasti...

Yize Hao, Guangxin Jiang, Shuang Qiu · 0 citations
#artificial intelligence Preprint Open access Oct 2026

RoboSimStudio: An Interactive Toolkit for Rapid Real2Sim of Robot Manipulation Tasks

It is difficult to accurately model the physics of the interaction between a robot and the objects it manipulates, including contact mechanics, coupled contact dynamics, deformations, stiffness and friction. We present RoboSimStudio (RSS), an interactive toolkit that makes choices of solver, contact model, and physical...

Kaiyuan Chen, Shuangyu Xie, Uksang Yoo et al. · 0 citations
#artificial intelligence Preprint Open access Oct 2026

A Rate Transfer Method: Convergence Rates in Stochastic Gradient Descent via Stochastic Calculus

We develop a rate-transfer method that converts finite-time Lyapunov estimates for an associated stochastic differential equation (SDE) into finite-time convergence bounds for stochastic gradient algorithms. Under generic moment and smoothness conditions, the convergence analysis of the stochastic gradient method reduc...

Neil Walton · 0 citations
#artificial intelligence Preprint Open access Oct 2026

UniW(A)M: A Unified Mixture-of-Experts Framework for World and World-Action Models

World models (WMs) and world-action models (WAMs) focus on future world prediction and executable action generation, respectively. Although these models learn shared physical dynamics and interaction semantics from embodied trajectories, they are typically trained in isolation, which restricts knowledge reuse between p...

Jingbo Xu, Jianjie Fang, Zhuohang Li et al. · 0 citations
#artificial intelligence Preprint Oct 2026

GeoReader: Learning Latent Geometry for Spatial Reasoning in Vision-Language Models

Vision-language models (VLMs) struggle with metric and multi-view relationships that remain implicit in RGB observations. Geometry foundation models recover this structure from RGB, but existing methods either fuse the estimated features with visual tokens and learn to use them from question answering alone, or align V...

Rong Li, Shi-Jie Li, Jiangyong Huang et al. · 0 citations
#artificial intelligence Preprint Open access Oct 2026

Just Respect the Semantics: Image-Token Compression via Pre-LLM Semantic Variable-Resolution Tokenization and In-LLM Relevance Pruning

Image-token compression must reduce computation without hurting the semantics. We introduce Varest, guided by semantic fungibility: tokens within a coherent semantic region can be summarized coarsely, while object boundaries and literal text require finer distinctions. Object and text localizers guide variable-resoluti...

Tianhao Fu, Austin Wang, Charles Chen et al. · 0 citations
#artificial intelligence Preprint Oct 2026

ProAS: A Progress-Aware Advantage Shaping Framework for Multi-Turn Agentic Reinforcement Learning

Progress-Aware Advantage Shaping (ProAS) is proposed, a plug-and-play framework that leverages a dynamically evolving Agentic Reference Graph (ARG) to achieve fine-grained credit assignment via Masking Unreasonable Incentives (MUI) and Asymmetric Penalty Redistribution (APR).

Bowen Ding, Ming-Da Wan, Yu-Han Chen et al. · 0 citations
#artificial intelligence Preprint Open access Oct 2026

Model-Based Online Decision Making via Generative Trajectory Planning

Online decision-making faces a tension between efficient inference and long-horizon reasoning. Value-based methods rely on short-horizon bootstrapping that limits the propagation of long-term information, while trajectory optimization methods plan explicitly but must solve a high-dimensional optimization problem at eve...

Haldun Balim, Yilun Du, Na Li · 0 citations
#artificial intelligence Preprint Open access Oct 2026

Kwai Summary Attention V2 Technical Report

Summary-token architectures such as Kwai Summary Attention (KSA) compress distant context into learnable Summary token per chunk, and hybrid variants interleave these layers with full attention to retain exact access to the original text. In such hybrid KSA-Full architecture, the interleaving inserted summary tokens ar...

OneRec Team, Chenglong Chu, Guohong Mu et al. · 0 citations

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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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