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Tabular classification has traditionally relied on supervised algorithms, which estimate the parameters of a prediction model using its training data. Recently, Prior-Data Fitted Networks (PFNs) such as TabPFN have successfully learned to…

Machine Learning · Computer Science 2023-11-20 Benjamin Feuer , Chinmay Hegde , Niv Cohen

Foundation models for tabular data, such as the Tabular Prior-data Fitted Network (TabPFN), are pre-trained on a massive number of synthetic datasets generated by structural causal models (SCM). They leverage in-context learning to offer…

Machine Learning · Computer Science 2026-01-28 Qinyi Liu , Mohammad Khalil , Naman Goel

Prior-data fitted networks (PFNs) were recently proposed as a new paradigm for machine learning. Instead of training the network to an observed training set, a fixed model is pre-trained offline on small, simulated training sets from a…

Machine Learning · Statistics 2023-05-19 Thomas Nagler

In this work, we study TabPFN as a training-free, modular summary network for simulation-based Bayesian inference (SBI). Tabular foundation models such as TabPFN are pretrained on broad families of synthetic tabular data-generating…

Machine Learning · Computer Science 2026-05-11 Elliot Pickens , Chiraag Gohel , Sidharth Satya

Prior-Fitted Networks (PFNs) have recently been proposed to efficiently perform tabular classification tasks. Although they achieve good performance on small datasets, they encounter limitations with larger datasets. These limitations…

Machine Learning · Computer Science 2025-03-04 Yuxin Wang , Botian Jiang , Yiran Guo , Quan Gan , David Wipf , Xuanjing Huang , Xipeng Qiu

Prior-Data Fitted Networks (PFNs) represent a paradigm shift in tabular data prediction. We present the principles of this new paradigm and evaluate two PFNs for estimating the average treatment effect (ATE) of a binary treatment on a…

Prior-Data Fitted networks (PFNs) have been very successful in tabular contexts, handling prediction tasks in context. However, they are designed for single-task inference, meaning that predicting several target values within a context…

Machine Learning · Computer Science 2026-05-21 Cormac Cureton , Narges Armanfard

Graph foundation models face several fundamental challenges including transferability across datasets and data scarcity, which calls into question the very feasibility of graph foundation models. However, despite similar challenges, the…

Machine Learning · Computer Science 2026-02-13 Dmitry Eremeev , Oleg Platonov , Gleb Bazhenov , Artem Babenko , Liudmila Prokhorenkova

Clustering tabular data is a fundamental yet challenging problem due to heterogeneous feature types, diverse data-generating mechanisms, and the absence of transferable inductive biases across datasets. Prior-fitted networks (PFNs) have…

Machine Learning · Computer Science 2026-05-15 Tianqi Zhao , Guanyang Wang , Yan Shuo Tan , Qiong Zhang

Tabular foundation models, particularly Prior-data Fitted Networks like TabPFN have emerged as the leading contender in a myriad of tasks ranging from data imputation to label prediction on the tabular data format surpassing the historical…

Machine Learning · Computer Science 2026-04-10 Mayuka Jayawardhana , Nihal Sharma , Kazem Meidani , Bayan Bruss , Tom Goldstein , Doron Bergman

Accurate prediction of mechanical properties of steel during hot rolling processes, such as Thin Slab Direct Rolling (TSDR), remains challenging due to complex interactions among chemical compositions, processing parameters, and resultant…

Traditional methods for tabular classification usually rely on supervised learning from scratch, which requires extensive training data to determine model parameters. However, a novel approach called Prior-Data Fitted Networks (TabPFN) has…

Machine Learning · Computer Science 2024-06-12 Quangao Liu , Wei Yang , Chen Liang , Longlong Pang , Zhuozhang Zou

Prior-data fitted networks (PFNs) have recently emerged as a powerful approach for Bayesian prediction tasks, approximating the posterior predictive distribution (PPD) through in-context learning. Despite their strong empirical performance…

Machine Learning · Statistics 2026-05-27 Gyeonghun Kang , Changwoo J. Lee , Xiang Cheng

Foundational models (FMs), pretrained on extensive datasets using self-supervised techniques, are capable of learning generalized patterns from large amounts of data. This reduces the need for extensive labeled datasets for each new task,…

Machine Learning · Computer Science 2024-06-19 Quan M. Tran , Suong N. Hoang , Lam M. Nguyen , Dzung Phan , Hoang Thanh Lam

Prior-data fitted networks (PFNs) have emerged as promising foundation models for prediction from tabular datasets, achieving state-of-the-art performance on small to moderate data sizes without tuning. While PFNs are motivated by Bayesian…

Methodology · Statistics 2026-05-11 Thomas Nagler , David Rügamer

While tabular classification has traditionally relied on from-scratch training, a recent breakthrough called prior-data fitted networks (PFNs) challenges this approach. Similar to large language models, PFNs make use of pretraining and…

Foundation models for tabular data, like TabPFN, achieve strong performance on small datasets when pre-trained solely on synthetic data. We show that this performance can be significantly boosted by a targeted continued pre-training phase.…

Machine Learning · Computer Science 2025-07-08 Anurag Garg , Muhammad Ali , Noah Hollmann , Lennart Purucker , Samuel Müller , Frank Hutter

Recently, TabPFN has gained attention as a foundation model for tabular data. However, it struggles to integrate heterogeneous modalities such as images and text, which are common in domains like healthcare and marketing, thereby limiting…

Machine Learning · Computer Science 2026-04-10 Wall Kim , Chaeyoung Song , Hanul Kim

Tabular datasets are inherently heterogeneous, presenting significant challenges for developing pre-trained foundation models. The recently introduced transformer-based Tabular Prior-data Fitted Network v2 (TabPFN v2) achieves unprecedented…

Machine Learning · Computer Science 2025-06-12 Han-Jia Ye , Si-Yang Liu , Wei-Lun Chao

Foundation models are an emerging research direction in tabular deep learning. Notably, TabPFNv2 recently claimed superior performance over traditional GBDT-based methods on small-scale datasets using an in-context learning paradigm, which…

Machine Learning · Computer Science 2025-06-12 Ivan Rubachev , Akim Kotelnikov , Nikolay Kartashev , Artem Babenko
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