LUCoS: Latent Unsupervised Context Selection for Tabular Foundation Models

📰 ArXiv cs.AI

Learn how to improve tabular foundation models using LUCoS, a latent unsupervised context selection method, to select the most informative instances for labeling

advanced Published 27 May 2026
Action Steps
  1. Apply LUCoS to select the most informative instances for labeling in your tabular dataset
  2. Use the selected instances to fine-tune your tabular foundation model
  3. Evaluate the performance of your model using a held-out test set
  4. Compare the results with random selection and supervised oracle experiments
  5. Refine your context selection strategy based on the results
Who Needs to Know This

Data scientists and machine learning engineers working on tabular foundation models can benefit from LUCoS to improve predictive performance and reduce labeling costs

Key Insight

💡 Carefully chosen labeled context sets can strongly outperform random selection in low-label tabular learning

Share This
🚀 Improve your tabular foundation models with LUCoS, a latent unsupervised context selection method! 📊💡

Key Takeaways

Learn how to improve tabular foundation models using LUCoS, a latent unsupervised context selection method, to select the most informative instances for labeling

Full Article

Title: LUCoS: Latent Unsupervised Context Selection for Tabular Foundation Models

Abstract:
arXiv:2605.27254v1 Announce Type: cross Abstract: Selecting which instances to label is a key challenge in low-label tabular learning. For recent Tabular Foundation Models such as TabPFN, context selection directly determines predictive performance. Supervised oracle experiments show that carefully chosen labeled context sets can strongly outperform random selection under the same labeling budget. However, the cold-start setting, where instances must be selected before any labels are available,
Read full paper → ← Back to Reads

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