COVID-19 is spreading all across the globe. Up until March 23, 2020, the confirmed cases in 173 12 countries and regions of the globe had surpassed 346,000, and more than 14,700 deaths had resulted. The 13 confirmed cases outside of China had also reached over 81,000, with over 3,200 deaths. In this study, a 14 Convolutional Neural Network (CNN) was proposed to analyze and predict the number of confirmed cases. 15 Several cities with the most confirmed cases in China were the focus of this study, and a COVID-19 16 forecasting model, based on the CNN deep neural network method, was proposed. To compare the overall 17 efficacies of different algorithms, the indicators of mean absolute error and root mean square error were 18 applied in the experiment of this study. The experiment results indicated that compared with other deep 19 learning methods, the CNN model proposed in this study has the greatest prediction efficacy. The feasibility 20 and practicality of the model in predicting the cumulative number of COVID-19 confirmed cases were also 21 verified in this study.22

Electricity load forecasting is one of the hot concerns of the current electricity market, and many forecasting models are proposed to satisfy the market participants’ needs. Most of the models have the shortcomings of large computation or low precision. To address this problem, a novel deep learning and data processing ensemble model called SELNet is proposed. We performed an experiment with this model; the experiment consisted of two parts: data processing and load forecasting. In the data processing part, the autocorrelation function (ACF) was used to analyze the raw data on the electricity load and determine the data to be input into the model. The variational mode decomposition (VMD) algorithm was used to decompose the electricity load raw-data into a set of relatively stable modes named intrinsic mode functions (IMFs). According to the time distribution and time lag determined using the ACF, the input of the model was reshaped into a 24 × 7 × 8 matrix M, where 24, 7, and 8 represent 24 h, 7 days, and 8 IMFs, respectively. In the load forecasting part, a two-dimensional convolutional neural network (2D-CNN) was used to extract features from the matrix M. The improved reshaped layer was used to reshape the extracted features according to the time order. A temporal convolutional network was then employed to learn the reshaped time-series features and combined with the fully connected layer to complete the prediction. Finally, the performance of the model was verified in the Eastern Electricity Market of Texas. To demonstrate the effectiveness of the proposed model data processing and load forecasting, we compared it with the gated recurrent unit (GRU), TCN, VMD-TCN, and VMD-CNN models. The TCN exhibited better performance than the GRU in load forecasting. The mean absolute percentage error (MAPE) of the TCN, which was over 5%, was less than that of the GRU. Following the addition of VMD to the TCN, the basic performance of the model was 2–3%. A comparison between the SELNet model and the VMD-TCN model indicated that the application of a 2D-CNN improves the forecast performance, with only a few samples having an MAPE of over 4%. The model’s prediction effect in each season is discussed, and it was found that the proposed model can achieve high-precision prediction in each season.

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