Development of Quantitative Structure-Property Relationship Models for Self-Emulsifying Drug Delivery System of 2-Aryl Propionic Acid NSAIDs

Table 3

Equations of statistical parameters.

Parameter	Equation
MSE	MSE=(1/𝑛)∑^𝑛𝑖=1(𝑦pred−𝑦exp)^2
RMSEP	RMSEP=[(1/𝑛)∑^𝑛𝑖=1(𝑦pred−𝑦exp)^2]^0.5
RSEP	RSEP(%)=100×[∑^𝑛𝑖=1(𝑦pred−𝑦exp)^2/∑^𝑛𝑖=1(𝑦exp)^2]^0.5
MAE	MAE(%)=(100/𝑛)×∑^𝑛𝑖=1|𝑦pred−𝑦exp|

𝑦_pred and 𝑦_exp are predicted and experimental solubility values, respectively; 𝑛 is the number of samples in the data set.