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FORECASTING MULTI-SEASONAL LOAD PROCESSES IN ELASTIC COMPUTING SYSTEMS

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The correctness of using the multi-seasonal season-trend decomposition method based on locally weighted scattergram smoothing for the problems of forecasting multi-seasonal load processes in elastic systems is assessed. A comparative analysis of the performance and accuracy of the above method and the seasonal integrated autoregressive moving average (SARIMA) model is performed. Results of experiments are presented that confirm the difficulty of constructing the SARIMA model based on data with a high degree of discretization and period values exceeding classical seasonality, such as 7, 12, 52. When creating the SARIMA model, time restrictions are imposed on the selection of parameters due to high memory consumption, which lead to a decrease in forecast accuracy and limited the ability to build a model based on higher seasonality indicators. The multi-seasonal season-trend decomposition method demonstrates an advantage over the SARIMA model in terms of forecast execution time and memory consumption, however, with a small set of initial data, the SARIMA model shows higher accuracy.

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