Hybrid Feature Selection Based Weighted Least Squares Twin Support Vector Machine Approach for Diagnosing Breast Cancer, Hepatitis, and Diabetes

Table 2

Dataset details.

Dataset	Number of features	Number of positive instances	Number of negative instances	Imbalance ratio
Breast Cancer	9	241	458	1.9
Pima Diabetes	8	500	268	1.8
Hepatitis	19	123	32	3.8