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Language Models are Realistic Tabular Data Generators

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arxiv 2210.06280 v2 pith:DN4PKUTH submitted 2022-10-12 cs.LG

Language Models are Realistic Tabular Data Generators

classification cs.LG
keywords datatabulargenerativegenerationgreatmodelsrealisticsynthetic
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Tabular data is among the oldest and most ubiquitous forms of data. However, the generation of synthetic samples with the original data's characteristics remains a significant challenge for tabular data. While many generative models from the computer vision domain, such as variational autoencoders or generative adversarial networks, have been adapted for tabular data generation, less research has been directed towards recent transformer-based large language models (LLMs), which are also generative in nature. To this end, we propose GReaT (Generation of Realistic Tabular data), which exploits an auto-regressive generative LLM to sample synthetic and yet highly realistic tabular data. Furthermore, GReaT can model tabular data distributions by conditioning on any subset of features; the remaining features are sampled without additional overhead. We demonstrate the effectiveness of the proposed approach in a series of experiments that quantify the validity and quality of the produced data samples from multiple angles. We find that GReaT maintains state-of-the-art performance across numerous real-world and synthetic data sets with heterogeneous feature types coming in various sizes.

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Forward citations

Cited by 14 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Categorical Prior Lock-in: Why In-Context Learning Fails for Structured Data

    cs.LG 2026-06 unverdicted novelty 7.0

    ICL in LLMs shows a sharp ceiling on categorical distributions for high-cardinality tabular data, failing to reproduce rare classes despite examples, while numerical fidelity improves.

  2. Concordia: Self-Improving Synthetic Tables for Federated LLMs

    cs.LG 2026-05 unverdicted novelty 7.0

    Concordia aligns synthetic table generation with federated validation utility via client-side utility scorers and group-relative policy optimization to improve LLM adaptation on non-IID tabular tasks.

  3. LLM-Driven Performance-Space Augmentation for Meta-Learning-Based Algorithm Selection

    cs.LG 2026-05 unverdicted novelty 7.0

    LLM-generated synthetic datasets steered uniformly across a 2D performance space defined by two landmark algorithms improve meta-learner performance on algorithm selection for regression tasks.

  4. The Power of Order: Fooling LLMs with Adversarial Table Permutations

    cs.LG 2026-05 unverdicted novelty 7.0

    Semantically invariant row and column permutations can fool LLMs on tabular tasks, and a new gradient-based attack called ATP finds such permutations to significantly degrade performance across models.

  5. Self-Improving Tabular Language Models via Iterative Reward-Guided Post-Training

    cs.LG 2026-04 unverdicted novelty 7.0

    TabGRAA enables self-improving tabular language models through iterative group-relative advantage alignment using modular automated quality signals like distinguishability classifiers.

  6. AnomalyVFM -- Transforming Vision Foundation Models into Zero-Shot Anomaly Detectors

    cs.CV 2026-01 conditional novelty 7.0

    AnomalyVFM converts vision foundation models into zero-shot anomaly detectors via three-stage synthetic dataset generation plus low-rank adapters and weighted pixel loss, reaching 94.1% average image AUROC across nine...

  7. When Tables Leak: Attacking String Memorization in LLM-Based Tabular Data Generation

    cs.LG 2025-12 conditional novelty 7.0

    LLM tabular generators leak memorized numeric strings, allowing a no-box attack to achieve near-perfect membership inference on some state-of-the-art models.

  8. Breaking the Quality-Privacy Tradeoff in Tabular Data Generation via In-Context Learning

    cs.LG 2026-05 unverdicted novelty 6.0

    DiffICL breaks the quality-privacy tradeoff in small-data tabular synthesis by using in-context learning on pretrained structural priors to generate data that is both higher quality and less memorizing of training samples.

  9. The Power of Order: Fooling LLMs with Adversarial Table Permutations

    cs.LG 2026-05 unverdicted novelty 6.0

    Semantically invariant row and column permutations in tables can cause LLMs to output incorrect answers, and a gradient-based attack called ATP efficiently finds such permutations that degrade performance across many models.

  10. Evaluating Inter-Column Logical Relationships in Synthetic Tabular Data Generation

    cs.LG 2025-02 unverdicted novelty 6.0

    Proposes three metrics for inter-column logical relationships in synthetic tabular data and reports that current generators often fail to preserve them on an industrial dataset.

  11. PSyGenTAB: A Privacy-Preserving Framework for Synthetic Clinical Tabular Data Generation via Constrained Optimization

    cs.LG 2026-06 unverdicted novelty 5.0

    PSyGenTAB is a constrained-optimization framework that generates privacy-preserving synthetic clinical tabular data while preserving clinical relationships and downstream model performance.

  12. Concordia: Self-Improving Synthetic Tables for Federated LLMs

    cs.LG 2026-05 unverdicted novelty 5.0

    Concordia aligns synthetic table generation with federated validation utility via client-level LoRA training, utility scorers, and outer GRPO refinement to boost performance over static synthetic baselines.

  13. Self-Improving Tabular Language Models via Iterative Reward-Guided Post-Training

    cs.LG 2026-04 unverdicted novelty 5.0

    TabGRAA applies group-relative advantage alignment in an iterative reward-guided post-training loop to improve tabular language model generators on fidelity, utility, and privacy trade-offs across five benchmarks.

  14. Creating Artificial Students that Never Existed: Leveraging Large Language Models and CTGANs for Synthetic Data Generation

    cs.LG 2025-01 unverdicted novelty 3.0

    CTGAN and LLMs generate synthetic student data that passes statistical and predictive utility checks for learning analytics.