2results about How to "Reduce feature dimension" patented technology

Embodiments of the present application provide a kind of sentiment recognition method and device of voice information.The method is to a few minority class voice feature set Random oversampling processing, and the minority class voice feature set after processing is merged with majority class voice feature set, obtains target voice feature set;According to inverse order selection algorithm, the voice feature in target voice feature set is selected, and the voice feature selected is constituted candidate feature set;The voice feature in candidate feature set is input into classifier, obtains the voice emotion category of voice information, and the embodiments of the present application avoid the decision rule that model learns from unbalanced data is too much inclined to majority class sample, still can select optimal candidate feature set by the correlation analysis between features, reduce the feature dimension of initial target voice feature set, improve the computing efficiency of model, and improve the detection performance of model.