Milk producing area tracing method based on fuzzy linear discriminant analysis

The invention discloses a milk producing area tracing method based on fuzzy linear discriminant analysis. The method comprises the following steps: (1) collecting near infrared spectrum data of milk; (2) preprocessing the spectral data by using a least square smoothing filtering algorithm; (3) carrying out dimensionality reduction on milk near infrared spectrum data by utilizing principal component analysis; (4) extracting identification information in the milk near infrared spectrum data by adopting a fuzzy linear discriminant analysis method; and (5) classifying the spectral data by using a K-nearest neighbor classifier. According to the method, the problem that a traditional feature extraction method is not ideal in classification effect when many overlapped data exist in a data set is solved, and the identification information contained in the spectral data can be effectively extracted. The method has the advantages of convenience, high detection speed, high classification precision and the like. 本发明公开了一种