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• W4380136124 abstract "Machine learning models exhibit strong performance on datasets with abundant labeled samples. However, for tabular datasets with extremely high $d$-dimensional features but limited $n$ samples (i.e. $d gg n$), machine learning models struggle to achieve strong performance due to the risk of overfitting. Here, our key insight is that there is often abundant, auxiliary domain information describing input features which can be structured as a heterogeneous knowledge graph (KG). We propose PLATO, a method that achieves strong performance on tabular data with $d gg n$ by using an auxiliary KG describing input features to regularize a multilayer perceptron (MLP). In PLATO, each input feature corresponds to a node in the auxiliary KG. In the MLP's first layer, each input feature also corresponds to a weight vector. PLATO is based on the inductive bias that two input features corresponding to similar nodes in the auxiliary KG should have similar weight vectors in the MLP's first layer. PLATO captures this inductive bias by inferring the weight vector for each input feature from its corresponding node in the KG via a trainable message-passing function. Across 6 $d gg n$ datasets, PLATO outperforms 13 state-of-the-art baselines by up to 10.19%." @default.
• W4380136124 created "2023-06-10" @default.
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• W4380136124 date "2023-06-07" @default.
• W4380136124 modified "2023-09-24" @default.
• W4380136124 title "Enabling tabular deep learning when $d gg n$ with an auxiliary knowledge graph" @default.
• W4380136124 doi "https://doi.org/10.48550/arxiv.2306.04766" @default.
• W4380136124 hasPublicationYear "2023" @default.
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