The present invention is the method for improving prediction of Polymer Properties and the system with improved prediction of Polymer Properties ability. The method of improvement prediction of Polymer Properties of the invention includes the following steps: that (1) provides polymer; (2) prediction model is provided; (3) average polymer performance prediction value is limited using the prediction model; (4) scope of application is determined; (5) one or more performances of the polymer are measured; (6) determine whether one or more actual measurement polymer performances fall in the scope of application; (7) keep one or more actual measurement polymer performances effective if one or more actual measurement polymer performances are fallen in the scope of application, or keep one or more actual measurement polymer performances invalid if one or more actual measurement polymer performances fall in the scope of application in addition; (8) prediction model is optionally corrected; (9) abovementioned steps are repeated at least once or repeatedly; (10) so as to improve the prediction of the polymer performance. Paradigmatic system with improved prediction of Polymer Properties ability of the invention includes: at least one polymer reactor; Automatic Prediction model; For measuring the device of one or more polymer performances; For detecting the device of one or more mistake actual measurement polymer performances; With the device for correcting the automatic Prediction model.
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