Research on the voltage prediction of unmanned aerial vehicle photovoltaic modules based on new combination optimization algorithm

Wang, Haixin; Shen, Jianxin

doi:10.1002/2050-7038.2844

Cited by 2 publications

(1 citation statement)

References 33 publications

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“…In the combined prediction model, the calculation of the weighted coefficient of each single prediction model is the key. Generally, the optimal weighted coefficient algorithm (OWCA) is used, in which the weighted coefficient of each single prediction method is calculated with the goal of minimizing the sum of squared errors of the combined prediction [65][66][67][68]. e calculation principle is as follows.…”

Section: Dynamic Optimal Weighted Coefficient Algorithmmentioning

confidence: 99%

Short-Term Traffic Flow Prediction: A Method of Combined Deep Learnings

Ren

Chai

Yin

et al. 2021

Journal of Advanced Transportation

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Short-term traffic flow prediction can provide a basis for traffic management and support for travelers to make decisions. Accurate short-term traffic flow prediction also provides necessary conditions for the sustainable development of the traffic environment. Although the application of deep learning methods for traffic flow prediction has achieved good accuracy, the problem of combining multiple deep learning methods to improve the prediction accuracy of a single method still has a margin for in-depth research. In this article, a combined deep learning prediction (CDLP) model including two paralleled single deep learning models, CNN-LSTM-attention model and CNN-GRU-attention model, is established. In the model, a one-dimensional convolutional neural network (1DCNN) is used to extract traffic flow local trend features and RNN variants (LSTM and GRU) with attention mechanism are used to extract long temporal dependencies trend features. Moreover, a dynamic optimal weighted coefficient algorithm (DOWCA) is proposed to calculate the dynamic weights of CNN-LSTM-attention and CNN-GRU-attention with the goal of minimizing the sum of squared errors of the CDLP model. Then, the neuron number, loss function, optimization algorithm, and other parameters of the CDLP model are discussed and set through experiments. Finally, the training set and test set for the CDLP model are established through the processing of traffic flow data collected from the field. The CDLP model is trained and tested, and the prediction results of traffic flow are obtained and analyzed. It indicates that the CDLP model can fit the change trend of traffic flow very well and has better performance. Furthermore, under the same dataset, the results from the CDLP model are compared with baseline models. It is found that the CDLP model has higher prediction accuracy than baseline models.

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Section: Dynamic Optimal Weighted Coefficient Algorithmmentioning

confidence: 99%