Time series reasoning is emerging as the next frontier in temporal analysis, aiming to move beyond pattern recognition towards explicit, interpretable, and trustworthy inference. This paper presents a BlueSky vision built on two complementary directions. One builds robust foundations for time series reasoning, centered on comprehensive temporal understanding, structured multi-step reasoning, and faithful evaluation frameworks. The other advances system-level reasoning, moving beyond language-only explanations by incorporating multi-agent collaboration, multi-modal context, and retrieval-augmented approaches. Together, these directions outline a flexible and extensible framework for advancing time series reasoning, aiming to deliver interpretable and trustworthy temporal intelligence across diverse domains.
@article{arxiv.2510.16980,
title = {Towards Interpretable and Trustworthy Time Series Reasoning: A BlueSky Vision},
author = {Kanghui Ning and Zijie Pan and Yushan Jiang and Anderson Schneider and Yuriy Nevmyvaka and Dongjin Song},
journal= {arXiv preprint arXiv:2510.16980},
year = {2025}
}