A Parsimonious Neural Network for the Classification of Modis Time-Series

Author(s):  
T.L. Grobler ◽  
W. Kleynhans ◽  
B.P. Salmon
Keyword(s):  
2021 ◽  
Author(s):  
Wenjie Cao ◽  
Cheng Zhang ◽  
Zhenzhen Xiong ◽  
Ting Wang ◽  
Junchao Chen ◽  
...  

2021 ◽  
pp. 190-200
Author(s):  
Lesia Mochurad ◽  
Yaroslav Hladun

The paper considers the method for analysis of a psychophysical state of a person on psychomotor indicators – finger tapping test. The app for mobile phone that generalizes the classic tapping test is developed for experiments. Developed tool allows collecting samples and analyzing them like individual experiments and like dataset as a whole. The data based on statistical methods and optimization of hyperparameters is investigated for anomalies, and an algorithm for reducing their number is developed. The machine learning model is used to predict different features of the dataset. These experiments demonstrate the data structure obtained using finger tapping test. As a result, we gained knowledge of how to conduct experiments for better generalization of the model in future. A method for removing anomalies is developed and it can be used in further research to increase an accuracy of the model. Developed model is a multilayer recurrent neural network that works well with the classification of time series. Error of model learning on a synthetic dataset is 1.5% and on a real data from similar distribution is 5%.


Risks ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 6 ◽  
Author(s):  
Guangyuan Gao ◽  
Mario Wüthrich

The aim of this project is to analyze high-frequency GPS location data (second per second) of individual car drivers (and trips). We extract feature information about speeds, acceleration, deceleration, and changes of direction from this high-frequency GPS location data. Time series of this feature information allow us to appropriately allocate individual car driving trips to selected drivers using convolutional neural networks.


Author(s):  
Dongshik Kang ◽  
◽  
Sigeru Omatu ◽  
Michifumi Yoshioka

An advanced neuro-classification of new and used bills using the spectral patterns is proposed. An acoustic spectral pattern is obtained from the output of the two-stage adaptive digital filters (ADFs) for time-series acoustic data. The acoustic spectral patterns are fed to a competitive neural network, and classified into some categories which show worn-out degrees of the bill. The proposed method is based on extension of an ADF, an individual adaptation (IA) algorithm, and a learning vector quantization (LVQ) algorithm. The experimental results show that the proposed method is useful to classify new and used bills.


2020 ◽  
Vol 17 (1) ◽  
pp. 260-266
Author(s):  
Apurvanand Sahay ◽  
J. Amudha

Forecasting a time series is an ever growing area in which various machine learning techniques have been used to predict and analyze the future based on the data gathered from past. “Prophet” forecasting model is the most recent development in forecasting the time series, developed by Facebook. Prophet is much faster and simpler to implement than the previous forecasting model such as ARIMA model. Classification of forecasting output can be done by applying convolution neural network (CNN) on the outcomes of the Prophet model. To get higher accuracy with lesser loss, the method runs CNN with the best possible deep layers. The yearly, weekly, daily seasonality and trends could be realized by Prophet Model. The paper shows classification of these output based on the varying types of seasonality and trends. The labeled output can then, train and test all the trends’ result and find out the accuracy and loss incurred in a CNN model. Applying different depth and parameters of CNN that is a combined unit at each layer, it can achieve more than 96% accuracy with less than 4% loss. The integration of prophet and CNN shows that the training and testing model of a neural network can validate the prediction done by using prophet forecasting model along with the seasonality and trends parameters are in coherence to one another.


2011 ◽  
Vol 474-476 ◽  
pp. 1987-1992
Author(s):  
Ye Yuan ◽  
Zhi Qiang Huang ◽  
Ze Min Cai

We have studied the detection of epileptic seizure by EEG signals based on embedding dimension as the input characteristic parameter of artificial neural networks has been studied in the research before. The results of the experiments showed that the overall accuracy as high as 100% can be achieved for distinguishing normal and epileptic EEG time series. In this paper, classification of multi-types of EEG time series based on embedding dimension as input characteristic parameter of artificial neural network will be studied, and the probabilistic neural network (PNN) will be also employed as the classifier for comparing the results with those obtained before. Cao’s method is also applied for computing the embedding dimension of normal and epileptic EEG time series. The results show that different types of EEG time series can be classified using the embedding dimension of EEG time series as characteristic parameter when the number of feature points exceed some value, however, the accuracy were not satisfied up to now, some work need to be done to improve the classification accuracy.


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