Figure 3: Relationship between experimental and predicted viscosities and R2 values for the ANN model developed (Circles are the data points, Dotted line is the perfect fit, Solid line is the fit for the current data and output) Relationship between experimental and predicted viscosities and R2 values for the ANN model developed (Circles are the data points, Dotted line is the perfect fit, Solid line is the fit for the current data and output).