Expression of concern: Early warning of telecom customer churn based on multialgorithm model optimization

An expression of concern on "Early Warning of Telecom Customer Churn Based on Multialgorithm Model Optimization" by Citation: Xu J, Li X, He Z and Zhou J (2022) Early Warning of Telecom Customer Churn Based on Multialgorithm Model Optimization. Front. Energy Res. 10:946933. doi: 10.3389/fenrg.2022.946933 With this notice, Frontiers wishes to alert readers that this article has been identified as being outside the journal's stated scope. In accordance with our publishing policies, we have initiated an investigation. This notice is published for transparency and readers are advised to interpret this work in light of the scope concern. Further editorial action will be determined by the outcome of this investigation, and this notice will be updated when the process concludes.