Mgr. Petr Šimánek

Publikace

Learning to Optimize with Dynamic Mode Decomposition

Rok
2022
Publikováno
2022 International Joint Conference on Neural Networks (IJCNN). Vienna: IEEE Industrial Electronic Society, 2022. p. 1-8. ISSN 2161-4407. ISBN 978-1-7281-8671-9.
Typ
Stať ve sborníku
Anotace
Designing faster optimization algorithms is of ever-growing interest. In recent years, learning to learn methods that learn how to optimize demonstrated very encouraging results. Current approaches usually do not effectively include the dynamics of the optimization process during training. They either omit it entirely or only implicitly assume the dynamics of an isolated parameter. In this paper, we show how to utilize the dynamic mode decomposition method for extracting informative features about optimization dynamics. By employing those features, we show that our learned optimizer generalizes much better to unseen optimization problems in short. The improved generalization is illustrated on multiple tasks where training the optimizer on one neural network generalizes to different architectures and distinct datasets.

Spatiotemporal Prediction of Vehicle Movement Using Artificial Neural Networks

Rok
2022
Publikováno
Proceedings of 2022 IEEE Intelligent Vehicles Symposium (IV). Piscataway: IEEE, 2022. p. 734-739. ISBN 978-1-6654-8821-1.
Typ
Stať ve sborníku
Anotace
Prediction of the movement of all traffic participants is a very important task in autonomous driving. Well-predicted behavior of other cars and actors is crucial for safety. A sequence of bird’s-eye view artificially rasterized frames are used as input to neural networks which are trained to predict the future behavior of the participants. The Lyft Motion Prediction for Autonomous Vehicles dataset is explored and adapted for this task. We developed and applied a novel approach where the prediction problem is viewed as a problem of spatiotemporal prediction and we use methods based on convolutional recurrent neural networks.