雙平面支持向量機(jī)的模型與算法研究
[Abstract]:Dual plane support vector machine (Twin Support Vector Machines, TSVM) is the nearest support vector machine algorithm in non-parallel plane. Its aim is to find two nonparallel hyperplanes, one is very close to one kind of sample point, and there is a certain distance from the other kind of sample point. It can solve a pair of small scale quadratic optimization problems, which is about four times faster than support vector machine (Support Vector Machines, SVM), and its performance is often better than SVM. TSVM has developed rapidly in recent years, and has been successfully applied in pattern recognition. In the field of data classification and function fitting, SVM's multi-task learning, multi-perspective learning and semi-supervised learning have attracted a large number of researchers to do research. In this paper, TSVM is extended to the framework of multi-task learning, multi-view supervised learning, multi-view semi-supervised learning and semi-supervised learning, and the generalization error bound of biplane support vector machine is analyzed by using PAC Bayesian theory. In the framework of multitask learning, we first propose a direct multitask biplane support vector machine (Direct Multitask Twin Support Vector Machines, DMTSVM), which is similar to the idea of multitask support vector machine (SVM). Each task will have a bias. In order to eliminate the sensitivity of biplane support vector machines to outliers, we propose a biplane support vector machine (Centroid Twin Support Vector Machines, CTSVM),) based on the distance between the center of the class and the hyperplane. Then we extend CTSVM to the framework of multitask learning in the same way, and get our multi-task centroid two-plane support vector machine (Multitask Centroid Twin Support Vector Machines, MCTSVM). In the framework of multi-view learning, we propose a multi-view biplane support vector machine (Multi-view Twin Support Vector Machines, MvTSVM) corresponding to multi-view supervised learning, and a multi-view Laplacian double-plane support vector machine (Multi-view Laplacian Twin Support Vector Machines,). MvLapTSVM) corresponds to multi-perspective semi-supervised learning. These two methods combine two perspectives through the idea of multi-view constraint, which is similar to that of SVM-2K.MvLapTSVM on the basis of MvTSVM, and draw lessons from Laplacian double plane support vector machine (Laplacian Twin Support Vector Machines,). LapTSVM) adds additional square loss and Laplacian normalization items. In a semi-supervised learning framework, we use a new normalized term, called tangent space intrinsic manifold normalized (Tangent Space Intrinsic Manifold Regularization, TSIMR). The canonical term can not only capture the local information of manifold by using tag data and unlabeled data, but also include the classical Laplacian canonical item. We combine it with TSVM for semi-supervised learning. An important reason that (Tangent Space Intrinsic Manifold Regularization Twin Support Vector Machines, TiTSVM). SVM is widely used in tangent space is that it is supported by strong statistical learning theory. PAC Bayesian bound and prior PAC Bayesian bound based on classifier distribution are the newest and most compact bounds in practical applications. In the end, the PAC Bayesian theory of statistical learning theory is used to analyze the theory bound of biplane support vector machine. In order to evaluate the proposed method, we have carried out comparative experiments on several real data sets. The experimental results show the effectiveness of the proposed algorithm.
【學(xué)位授予單位】:華東師范大學(xué)
【學(xué)位級別】:博士
【學(xué)位授予年份】:2016
【分類號】:TP18
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