Extreme Learning Machine (Elm) for Detection of Hazardous near Earth Objects

The protection of planet Earth, its inhabitants, and all living beings requires the identification of potentially dangerous objects, the simulation of impacts with Earth, and the mitigation of such threats. This research proposes the use of ELMs to distinguish between potentially dangerous objects and those that are not. The ELMs applied in this study include the standard ELM, the Regularized ELM, and the Weighted ELM (in versions W1 and W2). For the training and validation of the hazard object classification models, the Nearest Earth Objects database from NASA, available on Kaggle, was used. From this database, five features of the objects and a binary output indicating the danger or not towards Earth were used. The models were evaluated based on accuracy, geometric mean, and training time. According to the results, the Weighted ELM in its W1 version offers the best performance, as it is capable of more effectively classifying dangerous and non-dangerous objects for Earth, with an accuracy of 0.8, a geometric mean of 0.7, and a training time of 1.8 seconds. Based on the results obtained, the viability of classifying whether objects are potentially dangerous for Earth is confirmed. However, to increase the performance of the models, it is recommended to continue exploring other types of ELMs. © 2023 IEEE.