Toward Generalist Models for Structured Data: Fundamentals, Emerging Trends and Applications
Structured data such as tabular data, time series and graphs powers many core data mining applications including recommendation, forecasting and user behavior analysis. Conventional approaches such as statistical models, classical machine learning methods and deep neural networks have achieved strong results. Yet most methods are designed for a single task or dataset and lack the ability to generalize across diverse structured data problems. Recent advances in foundation models point to a new direction for structured data modeling. Inspired by progress in natural language processing and computer vision, emerging research explores large-scale pretraining, synthetic data generation and in-context learning (ICL) to build more general-purpose models. In particular, tabular foundation models provide a promising path toward unifying heterogeneous structured modalities. This perspective treats tables as a common representation that can capture information from tabular data, time series, and graphs within a shared learning framework. Early studies show encouraging capabilities including cross-task generalization, few-shot adaptation and knowledge transfer across datasets. This tutorial presents a systematic overview of this emerging paradigm. We review classical foundations, introduce recent tabular foundation models, and discuss key challenges in pretraining data generation, model design, and multi-task learning.