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Table 2 Pearson Correlation Coefficient (PCC) between the utility water Outflow and the predictors used in forecasting

From: Short-term water demand forecasting using hybrid supervised and unsupervised machine learning model

Predictor Rank PCC
Ka same day previous hour 1 0.843
Outflow previous day same hour 2 0.837
Outflow previous week same hour 3 0.821
K previous week same hour 4 0.793
Outflow average previous 24 h 5 0.562
Month of the year 6 −0.529b
Hour of the day 7 0.194
Day of the month 8 −0.058
  1. aK is the cluster number obtained from the SOM model output
  2. bNegative PCC means inverse correlation