A group of knowledge-incorporated multiple criteria linear programming classifiers

Classification is a main data mining task, which aims at predicting the class label of new input data on the basis of a set of pre-classified samples. Multiple criteria linear programming (MCLP) is used as a classification method in the data mining area, which can separate two or more classes by finding a discriminate hyperplane. Although MCLP shows good performance in dealing with linear separable data, it is no longer applicable when facing with nonlinear separable problems. A kernel-based multiple criteria linear programming (KMCLP) model is developed to solve nonlinear separable problems. In this method, a kernel function is introduced to project the data into a higher-dimensional space in which the data will have more chance to be linear separable. KMCLP performs well in some real applications. However, just as other prevalent data mining classifiers, MCLP and KMCLP learn only from training examples. In the traditional machine learning area, there are also classification tasks in which data sets are classified only by prior knowledge, i.e. expert systems. Some works combine the above two classification principles to overcome the faults of each approach. In this paper, we provide our recent works which combine the prior knowledge and the MCLP or KMCLP model to solve the problem when the input consists of not only training examples, but also prior knowledge. Specifically, how to deal with linear and nonlinear knowledge in MCLP and KMCLP models is the main concern of this paper. Numerical tests on the above models indicate that these models are effective in classifying data with prior knowledge.