SeMAnD: A New AI Technique for Geospatial Anomaly Detection
Geospatial data is a crucial part of many applications, such as maps and navigation systems. However, even small errors in this data can have big consequences. That’s why a new AI technique called SeMAnD has been developed to detect geometric anomalies in geospatial datasets.
What is SeMAnD?
SeMAnD stands for Self-supervised Anomaly Detection, and it uses a simple data augmentation strategy to create diverse variations of vector geometries. This allows it to detect anomalies such as shifted, incorrectly connected, or missing polygonal vector geometries like roads, buildings, and land cover.
How Does SeMAnD Work?
SeMAnD uses a self-supervised training objective with three components to learn representations of multimodal data. This helps it to detect local defects in geospatial data that other anomaly detection strategies might miss.
Why is SeMAnD Important?
By detecting and fixing these anomalies, SeMAnD can improve the accuracy and safety of geospatial applications. It outperforms other anomaly detection strategies and increases in performance as the number of input modalities and the strength of training data augmentations increase.
In conclusion, SeMAnD is a powerful new tool for improving the quality and accuracy of geospatial data. It has the potential to make a big impact on the way we use and interact with geospatial applications.