One class classification recognizes the target class from all other classes using only preparing data from the target class. One class order is suitable for those situations where exceptions are not spoken to well in the training set. One-class learning, or unsupervised SVM, aims at isolating data from the origin in the high-dimensional, indicator space (not the original predictor space), and is an algorithm used for outlier detection. Support vector machine is a machine learning method that is widely used for data examining and pattern recognizing. Support vector machines (SVMs, also support vector networks) are supervised learning models with related learning algorithms that analyze data and recognize patterns, used for classification and regression analysis. In this paper we will review the difference between both these classes.