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machine learning

12,457 papers

#artificial intelligence Preprint Open access Oct 2026

Multi-Scale Structural Features for Continual, Comprehensible Visual Recognition in a Developmental Learning Framework

Contemporary machine learning struggles to learn continually, reuse prior knowledge, and expose a comprehensible internal structure. A recently proposed developmental, gradient-free learning framework addresses these limitations by learning a discrete, topological model of its inputs through local variation and selecti...

Zeki Doruk Erden · 0 citations
#machine learning Preprint Open access Oct 2026

Beyond Scaffold Splits: Structural-Frontier Evaluation Reveals Hidden Failures in ADMET Models

Molecular property models are commonly evaluated by holding out Bemis-Murcko scaffolds, yet a scaffold identifier is only one notion of chemical unfamiliarity. We introduce a label-free structural-frontier split that reserves the sparsest and most physicochemically remote scaffold groups, and evaluate it on six public...

Jiacheng Zheng, Chang Guo, Zixuan Wang et al. · 0 citations
#machine learning Preprint Open access Oct 2026

Learning Probabilistic Filters with Strictly Proper Scoring Rules

Bayesian filtering of partially and noisily observed dynamical systems seeks to infer the evolving conditional distribution of the state of a dynamical system given observations, in an online fashion. This Bayesian filtering distribution is rarely available as a supervised learning target. However, one can often use th...

Eviatar Bach, Ricardo Baptista, Jochen Br\"ocker et al. · 0 citations
#artificial intelligence Preprint Open access Oct 2026

Prime Fourier Embeddings: A Principled Basis for Modular Arithmetic

Numbers have algebraic structure that standard neural embeddings often fail to expose. We introduce Prime Fourier Embeddings (PFE), which encode integers as prime-indexed (cos, sin) pairs derived from the harmonic analysis of Q, providing a pre-structured representation in which modular arithmetic reduces to selecting...

Hyunsang Hwang, Suhyun Bae, Donghun Lee · 0 citations
#machine learning Preprint Open access Oct 2026

Do Sparse Autoencoders Learn Meaningful Concept Hierarchies?

Sparse autoencoders (SAEs) have become an important tool for unsupervised concept discovery in large models. To make the resulting feature spaces more interpretable and manageable, recent approaches have begun imposing hierarchical structure, either explicitly or as an implicit effect of training constraints, yet rigor...

Nils Grandien, David Steinmann, Felix Friedrich et al. · 0 citations
#artificial intelligence Preprint Open access Oct 2026

Explaining Attention with Program Synthesis

A longstanding goal of research on interpretable deep learning is to replace opaque neural computations with human-meaningful symbolic descriptions. In this paper, we propose an approach for approximating the behavior of components of deep networks with executable programs. We focus on attention heads in transformer la...

Amiri Hayes, Belinda Z Li, Jacob Andreas · 0 citations
#machine learning Preprint Open access Oct 2026

We Need Explanation Cards to Connect Explanation Algorithms to the Real World

Algorithmic explanations are intended to help stakeholders understand opaque algorithmic decisions, but in practice, they often fall short. First, the meaning of algorithmic explanations is often not what one might intuitively expect, so expert knowledge is required to interpret them correctly. Second, recent work has...

Eric G\"unther, Bal\'azs Szabados, Kristof Meding et al. · 0 citations
#machine learning Preprint Open access Oct 2026

Express Language Modeling

We introduce a new tool, Express, for converting a non-causal attention approximation into a causal approximation with matching approximation guarantees. When combined with the state-of-the-art Thinformer approximation, Express improves upon the best known causal attention guarantees, delivering $\log^{3/2}(n)/s$ appro...

Albert Gong, Annabelle Michael Carrell, Raaz Dwivedi et al. · 0 citations
#machine learning Preprint Open access Oct 2026

Mean-based algorithms: A lower bound and regret

Mean-based algorithms are online learning algorithms that assign low probability to actions with low average rewards. Recent research shows that they converge to serially undominated actions, which serve as approximations to Nash equilibria in economic games. However, empirical studies indicate that mean-based algorith...

Julius Durmann, Amelie Kleber · 0 citations
#artificial intelligence Preprint Open access Oct 2026

FFR: Forward-Forward Learning for Regression

The Forward-Forward (FF) algorithm offers a computationally efficient and biologically plausible alternative to backpropagation (BP) by training neural networks through purely local, layer-wise optimization. However, FF is inherently designed for classification via contrastive positive-negative sample pairs, and extend...

Xinyang Liu, Xuanyu Liang, Shiqi Ding et al. · 0 citations
#artificial intelligence Preprint Open access Oct 2026

Task diversity produces systematic transfer but inhibits continual reinforcement learning

Continual reinforcement learning (RL) aims to produce agents that never stop adapting to new tasks. A key question is how this interacts with the diversity of tasks an agent experiences. Prior work has shown that training on many diverse tasks leads to agents with strong zero-shot and in-context adaptation. However, th...

Purab Seth, Neil Shah, Ishaan Sinha et al. · 0 citations
#artificial intelligence Preprint Open access Oct 2026

The Terminal Representation in Reinforcement Learning

Representation learning is a powerful tool for spatio-temporal abstraction within reinforcement learning (RL). Two well established approaches are through the successor representation (SR) and the default representation (DR). The SR encodes states by the future trajectories they induce, capturing information flow decou...

Amir Esterhuysen, Anders Jonsson · 0 citations

From tech blogs

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MIT News · Artificial Intelligence Oct 7, 2026

Discovering the value of humanistic inquiry

Students in MIT’s Concourse program delve deeply into the human condition, debate challenging questions, and learn to develop judgment about issues that can’t be quantified.

Microsoft Research Blog Oct 7, 2026

Agent Lightning v1.0: A 3,500-Line Lightweight Agentic RL Framework for Training Agents with Real Harnesses

Training AI agents with reinforcement learning can be challenging because their tools, context, and decision-making are managed by complex frameworks. Agent Lightning connects existing agents to RL training, making it easier to improve them without rebuilding them. The post Agent Lightning v1.0: A 3,500-Line Lightweight Agentic RL Framework for Training Agents with Real Harnesses appeared first on Microsoft Research.

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