Article discusses a study at MIT Data to AI Lab comparing large language models (LLMs) with other methods for detecting anomalies in time series data. Despite losing to other methods, LLMs show potential for zero-shot learning and direct integration in deployment, offering efficiency gains.
This article explores the use of Isolation Forest for anomaly detection and how SHAP (KernelSHAP and TreeSHAP) can be applied to explain the anomalies detected, providing insights into which features contribute to anomaly scores.
Learn how to use Autoencoders to detect anomalies in time series data in a few lines of code.
MIT researchers have developed a framework using large language models (LLMs) to efficiently detect anomalies in time-series data from complex systems like wind farms or satellites, potentially flagging problems before they occur.
MIT researchers have developed a method using large language models to detect anomalies in complex systems without the need for training. The approach, called SigLLM, converts time-series data into text-based inputs for the language model to process. Two anomaly detection approaches, Prompter and Detector, were developed and showed promising results in initial tests.
Stumpy is a Python library designed for efficient analysis of large time series data. It uses matrix profile computation to identify patterns, anomalies, and shapelets. Stumpy leverages optimized algorithms, parallel processing, and early termination to significantly reduce computational overhead.
This article explains the importance of data validation in a machine learning pipeline and demonstrates how to use TensorFlow Data Validation (TFDV) to validate data. It covers the 5 stages of machine learning validation: generating statistics from training data, inferring schema from training data, generating statistics for evaluation data and comparing it with training data, identifying and fixing anomalies, and checking for drifts and data skew.
The article discusses the challenges faced in evaluating anomaly detection in time series data and introduces Proximity-Aware Time series anomaly Evaluation (PATE) as a solution. PATE provides a weighted version of Precision and Recall curve and considers temporal correlations and buffer zones for a more accurate and nuanced evaluation.
