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Poster

BiSHop: Bi-Directional Cellular Learning for Tabular Data with Generalized Sparse Hopfield Model

Chenwei Xu · Yu-Chao Huang · Jerry Yao-Chieh Hu · Weijian Li · Ammar Gilani · Hsi-Sheng Goan · Han Liu


Abstract:

We introduce the Bi-Directional Sparse Hopfield Model (BiSHop), a novel end-to-end framework for tabular learning. BiSHop handles the two major challenges of deep tabular learning: non-rotationally invariant data structure and feature sparsity in tabular data.Our key motivation comes from the recent established connection between associative memory and attention mechanisms. Methodologically, BiSHop uses a dual-component approach, sequentially processing data both column-wise and row-wise through two interconnected directional learning modules. Computationally, these modules house layers of generalized sparse Hopfield layers, a sparse extension of the modern Hopfield model with adaptable sparsity. Consequently, BiSHop facilitates multi-scale representation learning, capturing both intra-feature and inter-feature interactions, with adaptive sparsity at each scale.Empirically, through experiments on diverse real-world datasets, we demonstrate that BiSHop surpasses current SOTA methods with significantly less HPO runs, marking it a robust solution for deep tabular learning.

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