Tabular Few-Shot Generalization Across Heterogeneous Feature Spaces

• URL: http://arxiv.org/abs/2311.10051v1
• Date: Thu, 16 Nov 2023 17:45:59 GMT
• Title: Tabular Few-Shot Generalization Across Heterogeneous Feature Spaces
• Authors: Max Zhu, Katarzyna Kobalczyk, Andrija Petrovic, Mladen Nikolic, Mihaela van der Schaar, Boris Delibasic, Petro Lio
• Abstract summary: We propose a novel approach to few-shot learning involving knowledge sharing between datasets with heterogeneous feature spaces. FLAT learns low-dimensional embeddings of datasets and their individual columns, which facilitate knowledge transfer and generalization to previously unseen datasets. A decoder network parametrizes the predictive target network, implemented as a Graph Attention Network, to accommodate the heterogeneous nature of tabular datasets.
• Score: 43.67453625260335
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Despite the prevalence of tabular datasets, few-shot learning remains under-explored within this domain. Existing few-shot methods are not directly applicable to tabular datasets due to varying column relationships, meanings, and permutational invariance. To address these challenges, we propose FLAT-a novel approach to tabular few-shot learning, encompassing knowledge sharing between datasets with heterogeneous feature spaces. Utilizing an encoder inspired by Dataset2Vec, FLAT learns low-dimensional embeddings of datasets and their individual columns, which facilitate knowledge transfer and generalization to previously unseen datasets. A decoder network parametrizes the predictive target network, implemented as a Graph Attention Network, to accommodate the heterogeneous nature of tabular datasets. Experiments on a diverse collection of 118 UCI datasets demonstrate FLAT's successful generalization to new tabular datasets and a considerable improvement over the baselines.

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