arXiv Machine Learning

Towards Universal Representation-Based Process Control

The paper proposes a new approach to window‑level monitoring of temporal processes by treating it as a reference‑based hypothesis test. Instead of relying on predefined parametric models, the method uses an empirical reference distribution derived from task‑ or domain‑specific data, combined with pretrained time‑series encoders, kernel density estimation, and conformal calibration to provide finite‑sample valid inference in a learned representation space. Classical concepts such as stationarity and cyclostationarity naturally emerge as special cases of this framework, and experiments show the method’s sensitivity to distributional changes while maintaining well‑calibrated inference under stable conditions.

arXiv Machine Learning
Sep 24

A Foundation Model for Instruction-Conditioned In-Context Time Series Tasks

The paper introduces iAmTime, a time‑series foundation model that uses instruction‑conditioned in‑context learning to adapt to tasks at inference time. iAmTime represents each episode as a structured prompt with semantic tokens that focus on specific time‑series regions, enabling the model to infer task structure from input‑output demonstrations. Trained on large real and synthetic corpora across forecasting, imputation, reconstruction, classification, anomaly detection, and source de‑mixing, iAmTime outperforms strong baselines on zero‑shot probabilistic and point forecasting while matching or exceeding performance on several non‑forecasting tasks.

By Anish Saha, Konstantin Shmakov
arXiv Machine Learning
Jun 9

In-Context Learning of Stochastic Differential Equations with Foundation Inference Models

arXiv:2502. 19049v3 Announce Type: replace Abstract: Stochastic differential equations (SDEs) describe dynamical systems where deterministic flows, governed by a drift function, are superimposed with random fluctuations, dictated by a diffusion function.

By Patrick Seifner, Kostadin Cvejoski, David Berghaus, Cesar Ojeda, Ramses J. Sanchez