Temporal-Conditioned Normalizing Flows for Multivariate Time Series Anomaly Detection

• URL: http://arxiv.org/abs/2603.09490v1
• Date: Tue, 10 Mar 2026 10:49:48 GMT
• Title: Temporal-Conditioned Normalizing Flows for Multivariate Time Series Anomaly Detection
• Abstract summary: temporal-conditioned flows (tcNF) is a novel framework that addresses anomaly detection in time series data.<n>tcNF effectively captures complex temporal dynamics and generates accurate probability of expected behavior.<n>We evaluate tcNF on diverse datasets, demonstrating good accuracy and robustness compared to existing methods.
• Score: 0.6399763005153404
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: This paper introduces temporal-conditioned normalizing flows (tcNF), a novel framework that addresses anomaly detection in time series data with accurate modeling of temporal dependencies and uncertainty. By conditioning normalizing flows on previous observations, tcNF effectively captures complex temporal dynamics and generates accurate probability distributions of expected behavior. This autoregressive approach enables robust anomaly detection by identifying low-probability events within the learned distribution. We evaluate tcNF on diverse datasets, demonstrating good accuracy and robustness compared to existing methods. A comprehensive analysis of strengths and limitations and open-source code is provided to facilitate reproducibility and future research.

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