Geology Reference
In-Depth Information
Fig. 6.1 Monthly variations in rainfall and precipitation data in Brue catchment
Fig. 6.2 Daily variations of precipitation and rainfall used for modelling in the Brue catchment for
1994 - 2000 periods
6.3 Statistical Indices for Comparison
The performances of the developed data based models and the basic benchmark
models in this chapter were compared using various standard statistical perfor-
mance evaluation criteria. The statistical measures considered include the correla-
tion coef
ciency (E),
root mean squared error (RMSE), Mean bias error (MBE) and Variance of the
distribution of differences with MBE (S d ). These statistical terms can be de
cient (CORR), mean absolute percentage error (MAPE), Ef
ned as
follows:
P i ¼ 1 ð
Q o Q o Þ
P i ¼ 1 ð
Q m Q m Þ : ð
Correlation Coefficient
CORR
¼
q
ð 6 : 1 Þ
;
2
2
Q m Q m Þ
Q o Q o Þ
: ð
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