Kamalov, FiruzNazir, AmrilSafaraliev, MurodbekCherukuri, Aswani KumarZgheib, Rita2022-05-182022-05-18© 20212021Kamalov, F., Nazir, A., Safaraliev, M., Cherukuri, A. K., & Zgheib, R. (2021). Comparative analysis of activation functions in neural networks. 2021 28th IEEE International Conference on Electronics, Circuits, and Systems, ICECS. https://doi.org/10.1109/ICECS53924.2021.9665646978-172818281-0https://doi.org/10.1109/ICECS53924.2021.9665646http://hdl.handle.net/20.500.12519/641This conference paper is not available at CUD collection. The version of scholarly record of this paper is published in 2021 28th IEEE International Conference on Electronics, Circuits, and Systems (ICECS) (2021), available online at: https://doi.org/10.1109/ICECS53924.2021.9665646Although the impact of activations on the accuracy of neural networks has been covered in the literature, there is little discussion about the relationship between the activations and the geometry of neural network model. In this paper, we examine the effects of various activation functions on the geometry of the model within the feature space. In particular, we investigate the relationship between the activations in the hidden and output layers, the geometry of the trained neural network model, and the model performance. We present visualizations of the trained neural network models to help researchers better understand and intuit the effects of activation functions on the models. © 2021 IEEE.en-USPermission to reuse abstract has been secured from Institute of Electrical and Electronics Engineers Inc.activation functionloss functionneural networksReLUsigmoidConference PaperCopyright : © 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.