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Author

Yiding Liu

5 papers indexed here

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#machine learning Preprint Oct 2026

A Unified Scaling Law for Time Series Foundation Models

We develop a Unified Scaling Law and a Unified Theory of Time Series Learning to understand how model capacity and historical information support forecasting. Across different lookback lengths and forecast horizons, we analyze 18,768 experimental cells from 21 checkpoints on 23 dataset-frequency tasks spanning six doma...

Xilin Dai, Yi-Ding Liu, Ze-Wei Dong et al. · 0 citations
#artificial intelligence Preprint Oct 2026

Pythia: Toward Foundation World Models for Multimodal Time Series

Time-series foundation models offer a unified approach to forecasting across heterogeneous domains. Textual context and auxiliary observations provide complementary information about temporal dynamics, yet reusable multimodal predictive representations remain underexplored. We introduce Pythia, a foundation world model...

Xilin Dai, Hong-Zhou Chen, Yi-Fan Hu et al. · 0 citations
#artificial intelligence Preprint Sep 2026

When Tomorrow Becomes Today: Self-Evolving Policies for Agentic Time-Series Forecasting

TimEvolve is introduced, a frozen-backbone time series agent that converts each realized outcome into persistent joint updates of expert trust, agent path selection, and intervention strength, and demonstrates the value of learning forecasting policies from the futures encountered during deployment.

Yi-Fan Hu, Xilin Dai, Zhi-Yuan Qu et al. · 2 citations
#artificial intelligence Preprint Sep 2026

Beyond Numerical Time Series: A Unified Benchmark for Multimodal Forecasting with Heterogeneous Context

A unified benchmark for multimodal time series forecasting with heterogeneous context, MUSE-Bench enables systematic evaluation of how forecasting models utilize context and provides a foundation for future multimodal forecasting research.

Peng Chen, Zhi-Hao Zhuang, Hong-Zhou Chen et al. · 3 citations
Preprint Aug 2026

Into the ORBIT for Time Series: Training Regimes for Foundation Models

This work introduces ORBIT (Omni-Range Bootstrap Incremental Training), a training paradigm that makes this distribution explicit and controllable and introduces Rank-Guided Cross-Depth Alignment, a training objective that uses late-layer representations as stop-gradient teachers for shallow layers without additional i...

Hongjie Xia, Yi-Ding Liu, Yi-Fan Hu et al. · 5 citations

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