| General solubility prediction models were developed using both classic least square and a novel method, in order to predict the solubility of the solutes in methanol+water binary solvent system. The novel approach to the regression analysis was investigated using an error minimization method. This aim was achieved by using a user defined loss function regression, instead of the classic least square regression approach. To examine the results of the novel methodology, previous solubility data of 41 solutes were used for comparison. Both least square and novel methods were applied to the Jouyban-Acree model, Jouyban-Acree model in combination with Abraham parameters, and the modified Wilson model. The generally trained versions of the mentioned models produced more accurate predictions using the novel method than the least square method that has been confirmed by ttest analyses. The Jouyban-Acreemodel was the most accurate model among other generally trained models. Finally, the results were validated using a cross-validation analysis which produced the acceptable prediction accuracy of 24.6% mean percentage deviation (MPD) for the new methodology against 32.1% of the least square method. Also a new arithmetically transformed version of aforementioned models was introduced in this study to make the alculations easier to execute. |