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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