Loss-Guided Pretraining Data Selection for Time-Series Foundation Models

arXiv:2609.37255 · cs.LG, cs.AI · Submitted 2026-09-29 · Read on arXiv

cs.LG, cs.AI

Submitted: 2026-09-29

Updated: 2026-09-29

Comments: 15 pages, 5 figures

Project page: https://sxsong.github.io/1

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Foundation Model — 1× in this paper · explained in 3 episodes
• Foundation Models — 1× in this paper · explained in 7 episodes

Sources

• SemDeDup: Data-efficient learning at web-scale through semantic deduplication
• GIFT-Eval: A Benchmark For General Time Series Forecasting Model Evaluation
• A decoder-only foundation model for time-series forecasting

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