UPLOTS: A Unified Pretrained Language Model for Constrained Time-series Generation

Abstract:In time-series generation, existing approaches typically handcraft ortrain a separate model for each dataset, which hinders their scalability and fails to leverage shared temporal structures across domains. To address this fragmentation, we propose UPLOTS, a Unified, Prompt-guided Language model framework fOr constrained Time-Series Generation across diverse domains. Instead of building task-specific models, UPLOTS leverages a single pre-trained transformer backbone guided by learned constraint prompts, enabling on-demand generation with precise pattern control. One key innovation is our dynamic multi-dataset loss re-weighting and prompt-to-pattern mapping, which allows UPLOTS to internalize diverse temporal structures during training and conditionally generate them at inference. We evaluate UPLOTS on four real-world benchmarks and multiple constraint settings, including peak-period, calendar, load-level, and volatility patterns. Additional held-out constraint-combination and downstream forecasting experiments further demonstrate that UPLOTS generalizes beyond the original peak-pattern setting and improves data augmentation under scarce real-data regimes. Our code and baselines are available at github repo: this https URL.

Machine Learning (cs.LG); Artificial Intelligence (cs.AI)

arXiv:2606.10466 [cs.LG]

(or arXiv:2606.10466v4 [cs.LG] for this version)

https://doi.org/10.48550/arXiv.2606.10466 Focus to learn more arXiv-issued DOI via DataCite

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