S2DEVFMAP: Self-Supervised Learning Framework with Dual Ensemble Voting Fusion for Maximizing Anomaly Prediction in Timeseries

TL;DR

This paper introduces a robust self-supervised ensemble framework combining multiple models and voting techniques to enhance anomaly detection accuracy in industrial time series data, especially cooling systems.

Contribution

It presents a novel dual ensemble voting fusion method with heterogeneous models, improving anomaly detection effectiveness over traditional single-model approaches.

Findings

Outperforms traditional methods in anomaly detection accuracy

Maximizes anomaly coverage with dual ensemble fusion

Demonstrates effectiveness on real-world industrial cooling data

Abstract

Anomaly detection plays a crucial role in industrial settings, particularly in maintaining the reliability and optimal performance of cooling systems. Traditional anomaly detection methods often face challenges in handling diverse data characteristics and variations in noise levels, resulting in limited effectiveness. And yet traditional anomaly detection often relies on application of single models. This work proposes a novel, robust approach using five heterogeneous independent models combined with a dual ensemble fusion of voting techniques. Diverse models capture various system behaviors, while the fusion strategy maximizes detection effectiveness and minimizes false alarms. Each base autoencoder model learns a unique representation of the data, leveraging their complementary strengths to improve anomaly detection performance. To increase the effectiveness and reliability of final anomaly prediction, dual ensemble technique is applied. This approach outperforms in maximizing the coverage of identifying anomalies. Experimental results on a real-world dataset of industrial cooling system data demonstrate the effectiveness of the proposed approach. This approach can be extended to other industrial applications where anomaly detection is critical for ensuring system reliability and preventing potential malfunctions.