Papers › Smart Data Representations: Impact on the Accuracy of Deep Neural Networks

Smart Data Representations: Impact on the Accuracy of Deep Neural Networks

17 Nov 2021arXiv:2111.09128archive 2025-07-28

Oliver Neumann, Nicole Ludwig, Marian Turowski, Benedikt Heidrich, Veit Hagenmeyer, Ralf Mikut

Deep Neural Networks are able to solve many complex tasks with less engineering effort and better performance. However, these networks often use data for training and evaluation without investigating its representation, i.e.~the form of the used data. In the present paper, we analyze the impact of data representations on the performance of Deep Neural Networks using energy time series forecasting. Based on an overview of exemplary data representations, we select four exemplary data representations and evaluate them using two different Deep Neural Network architectures and three forecasting horizons on real-world energy time series. The results show that, depending on the forecast horizon, the same data representations can have a positive or negative impact on the accuracy of Deep Neural Networks.

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Time SeriesTime Series AnalysisTime Series Forecasting

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