Embedding World Knowledge into Tabular Models: Towards Best Practices for Embedding Pipeline Design

Fuente: arXiv
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Main Authors: Kolomenko, Oksana, Knauer, Ricardo, Rodner, Erik
Format: Preprint
Published: 2026
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author Kolomenko, Oksana
Knauer, Ricardo
Rodner, Erik
author_facet Kolomenko, Oksana
Knauer, Ricardo
Rodner, Erik
contents Embeddings are a powerful way to enrich data-driven machine learning models with the world knowledge of large language models (LLMs). Yet, there is limited evidence on how to design effective LLM-based embedding pipelines for tabular prediction. In this work, we systematically benchmark 256 pipeline configurations, covering 8 preprocessing strategies, 16 embedding models, and 2 downstream models. Our results show that it strongly depends on the specific pipeline design whether incorporating the prior knowledge of LLMs improves the predictive performance. In general, concatenating embeddings tends to outperform replacing the original columns with embeddings. Larger embedding models tend to yield better results, while public leaderboard rankings and model popularity are poor performance indicators. Finally, gradient boosting decision trees tend to be strong downstream models. Our findings provide researchers and practitioners with guidance for building more effective embedding pipelines for tabular prediction tasks.
format Preprint
id arxiv_https___arxiv_org_abs_2603_17737
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Embedding World Knowledge into Tabular Models: Towards Best Practices for Embedding Pipeline Design
Kolomenko, Oksana
Knauer, Ricardo
Rodner, Erik
Machine Learning
Embeddings are a powerful way to enrich data-driven machine learning models with the world knowledge of large language models (LLMs). Yet, there is limited evidence on how to design effective LLM-based embedding pipelines for tabular prediction. In this work, we systematically benchmark 256 pipeline configurations, covering 8 preprocessing strategies, 16 embedding models, and 2 downstream models. Our results show that it strongly depends on the specific pipeline design whether incorporating the prior knowledge of LLMs improves the predictive performance. In general, concatenating embeddings tends to outperform replacing the original columns with embeddings. Larger embedding models tend to yield better results, while public leaderboard rankings and model popularity are poor performance indicators. Finally, gradient boosting decision trees tend to be strong downstream models. Our findings provide researchers and practitioners with guidance for building more effective embedding pipelines for tabular prediction tasks.
title Embedding World Knowledge into Tabular Models: Towards Best Practices for Embedding Pipeline Design
topic Machine Learning
url https://arxiv.org/abs/2603.17737