Support vector data description early warning technique based on active learning

In order to solve the problem of inapplicability of current early warning methods,a support vector data description early warning technique based on active learning is proposed.And implementation of the technique is detailedly presented.In the technique,support vector data description is used to choose “ill-represented” samples and active learning was used to cope with the the large size of observations.An early warning experiment is conducted on a macro-economic dataset to verify the proposed technique.