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J. Leskovec

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#artificial intelligence Preprint Oct 2026

Memorilla: Latent Semantic Memory for LLMs

Memory enables large language models (LLMs) to use information beyond their parameters, such as past user conversations, long documents, or an agent's earlier actions. For a frozen LLM, access to this accumulated knowledge is limited to what a memory system places in its context window. However, gathering and combining...

Adibvafa Fallahpour, Parsa Idehpour, Vignesh Kothapalli et al. · 0 citations
#natural language process... Preprint Oct 2026

One Block Ahead: Promoting Sampler State in Diffusion Language Models

It is demonstrated that for uniform-state diffusion LMs, where a block's denoising progress is not visible in its intermediate tokens, concurrent decoding is advantageous if the next block's tokens are promoted together with the corresponding sampler state, including the self-conditioning signal and the denoising time.

Yang-Yi Shen, Pin-Jui Ku, Nicolai Oswald et al. · 0 citations
#artificial intelligence Preprint Oct 2026

RT-J: Large-Scale Pretraining of Relational Transformers for Context-Efficient Predictions

Foundation models for tables and relational databases are increasingly used for predictive tasks across various scientific and industrial domains. However, adapting existing models to unseen datasets requires tens of thousands of examples. Here we introduce RT-J, an 85M-parameter relational foundation model (RFM) that...

Rishabh Ranjan, Vignesh Kothapalli, Harsh Agarwal et al. · 0 citations
#artificial intelligence Preprint Oct 2026

Higher-Order Molecular Grammars for Generative and Foundation Models in Chemistry

Molecular learning models are strongly shaped by their underlying representations. Yet standard sequential and graph formalisms struggle to explicitly encode higher-order topology, such as ring systems and recurring motifs. Existing higher-order representations can capture these structures directly, but they are often...

Yiming Huang, Yu-Jie Zeng, Vijay Prakash Dwivedi et al. · 0 citations
#artificial intelligence Preprint Sep 2026

UniEvo-VL: An On-policy Self-Distillation Training Recipe for Multimodal Model Self-improvement

Modern multimodal models bring generation and understanding into a single unified system, which enables them to provide and learn from their own feedback. Motivated by this unified capacity, we introduce UniEvo-VL, a self-evolving framework for multimodal models to learn from this constructive self-correction feedback...

Fang Wu, Dan-Lei Xing, Yan-Jie Huang et al. · 0 citations
#explainable ai Review Open access Sep 2026

AutoScreen: AI Co-Scientist System for Target Discovery in Functional Genomics

This work introduces AutoScreen, an AI co-scientist system supporting target discovery through both Pre-screen Design, which constructs perturbation libraries de novo from free-text research descriptions, and Post-screen Analysis, which re-ranks experimental screen hits by integrating statistical scores with biological...

Yuan-Hao Qu, Xu-Feng Liu, Xiao-Tong Wang et al. · 0 citations
#machine learning Preprint Sep 2026

Data Scarcity and Model Sparsity: Mixtures-of-Experts Overfit More to Repeated Data

This work addresses the adverse interactions between sparsity and data repetition, and presents evidence for the core mechanisms of overfitting and its potential remediation, and suggests promising avenues for future methods to reduce over-specialization in model parameters by disrupting memorization patterns.

Atindra Jha, Margaret Li, J. Leskovec et al. · 2 citations
#machine learning Preprint Aug 2026

Advancing Open and Reproducible Relational Learning: RelArena-$\alpha$, TabPFN-Rel and RPI

This first release of Prior Labs in relational learning opens-source three pieces of software that expect to accelerate research in the field towards meaningful real-world impact and releases an initial version of RPI, an open-source, model-agnostic interface that enables early adopters to easily define problems on new...

A. Hayler, Klemens Flöge, Alan Arazi et al. · 3 citations · ⚡1
Jul 2026

Autonomous biomedical research with an artificial intelligence agent.

Biomni envisions artificial intelligence augmenting human scientists and accelerating discovery by interpreting multi-modal datasets, optimizing protein stability, orchestrating wet-lab instruments, and generating experimentally testable protocols.

Kexin Huang, Serena Zhang, Hanchen Wang et al. · 19 citations · ⚡2

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