Sparad:
| Huvudupphovsman: | |
|---|---|
| Materialtyp: | Recurso digital |
| Språk: | engelska |
| Publicerad: |
Zenodo
2026
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| Ämnen: | |
| Länkar: | https://doi.org/10.5281/zenodo.20425539 |
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Innehållsförteckning:
- <p>This repository contains the dataset, Python notebooks, and supporting materials used in the study:</p> <p><strong>“A Novel Evaluation Metric for Unsupervised Learning in AIS-Based Maritime Anomaly Detection: MADQI”</strong></p> <p>The study proposes a novel evaluation framework named the <strong>Maritime Anomaly Detection Quality Index (MADQI)</strong> for assessing unsupervised anomaly detection performance in Automatic Identification System (AIS)-based maritime surveillance applications without requiring labelled data.</p> <p>The repository includes:</p> <ul> <li>AIS-based maritime trajectory dataset used in the experiments</li> <li>Python notebooks for data preprocessing, feature engineering, anomaly detection, and evaluation</li> <li>Haversine distance-based spatial analysis implementation</li> <li>Isolation Forest-based unsupervised anomaly detection workflow</li> <li>MADQI metric calculation modules</li> <li>Visualisation and analysis scripts</li> <li>Example outputs and evaluation results</li> </ul> <p>The proposed MADQI framework integrates four complementary evaluation components:</p> <ul> <li><strong>ARC</strong>: Anomaly Rate Consistency</li> <li><strong>PPS</strong>: Physical Plausibility Score</li> <li><strong>SDS</strong>: Score Distribution Separation</li> <li><strong>ECE</strong>: Extreme Case Evidence</li> </ul> <p>The notebooks demonstrate the complete experimental pipeline, including:</p> <ol> <li>AIS data preprocessing</li> <li>Temporal and spatial feature extraction</li> <li>Vessel movement analysis</li> <li>Anomaly detection using unsupervised learning</li> <li>Multi-component MADQI evaluation</li> <li>Quantitative and visual interpretation of anomaly behaviour</li> </ol> <p>The implementation is designed to support reproducibility, transparency, and further research in maritime anomaly detection, unsupervised learning evaluation, and AI-driven maritime surveillance systems.</p> <h3>Keywords</h3> <p>AIS, Maritime Anomaly Detection, Unsupervised Learning, Isolation Forest, MADQI, Maritime AI, Machine Learning, Haversine Distance, Vessel Behaviour Analysis, Maritime Surveillance, Explainable AI, Anomaly Detection Evaluation</p> <h3>Author</h3> <p><span class="hover:entity-accent entity-underline inline cursor-pointer align-baseline"><span class="whitespace-normal">Ismet Gocer</span></span></p>