Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Berngardt, Oleg I."'
Autor:
Berngardt, Oleg I.
This paper presents an algorithm for searching for the minimum number of neurons in fully connected layers of an arbitrary network solving given problem, which does not require multiple training of the network with different number of neurons. The al
Externí odkaz:
http://arxiv.org/abs/2405.14147
Autor:
Berngardt, Oleg I.
The paper presents the algorithm for clustering a dataset by grouping the optimal, from the point of view of the BIC criterion, number of Gaussian clusters into the optimal, from the point of view of their statistical separability, superclusters. The
Externí odkaz:
http://arxiv.org/abs/2309.02623
Autor:
Berngardt, Oleg I.
The paper discusses the use of the Absolute activation function in classification neural networks. An examples are shown of using this activation function in simple and more complex problems. Using as a baseline LeNet-5 network for solving the MNIST
Externí odkaz:
http://arxiv.org/abs/2304.11758
In the paper a method for automatic classification of signals received by EKB and MAGW ISTP SB RAS coherent scatter radars (8-20MHz operating frequency) during 2021 is described. The method is suitable for automatic physical interpretation of the res
Externí odkaz:
http://arxiv.org/abs/2201.05735
Publikováno v:
Polar Science, 28 (2021), 100628
The method for calibrating elevation measurements at EKB ISTP SB RAS radar obtained for the period 20/09/2019 - 18/11/2019 is presented. The calibration method is a modernization of the method for calibrating radar by meteor trails. The main differen
Externí odkaz:
http://arxiv.org/abs/1912.05788
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics, 2020
A comparative statistical analysis of AATR and WTEC indices was conducted based on data from the ISTP SB RAS GNSS receivers network. It is shown that at high levels of ionospheric disturbance (for WTEC > 0.1 TECU), the AATR index is proportional to t
Externí odkaz:
http://arxiv.org/abs/1911.02784
Autor:
Berngardt, Oleg I.
Publikováno v:
Advances in Space Research, 2020
In this paper, a method is described for using 8-20MHz noise absorption effect for realtime detecting radiowave absorption periods. The method is based on two empirical autoregression models of noise dynamics. The first (rough) prediction model is ba
Externí odkaz:
http://arxiv.org/abs/1910.08766
Publikováno v:
In Advances in Space Research 15 November 2022 70(10):2905-2919
The analysis was carried out of the scattered signal in the cases of ground backscatter and ionospheric scatter. The analysis is based on the data of the decameter coherent EKB ISTP SB RAS radar. In the paper the signals scattered in each sounding ru
Externí odkaz:
http://arxiv.org/abs/1711.08134
Autor:
Berngardt, Oleg I., Fedorov, Roman R.
The paper presents the implementation of algorithms for automatic search for signals scattered at meteor tracks based on the ISTP SB RAS EKB radar data. The algorithm is divided into two phases - the detection of a meteoric echo and the determination
Externí odkaz:
http://arxiv.org/abs/1710.07414