Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: ASTM E2617-09
• Năm ban hành / Publication date: 2009
• Tình trạng / Status: W - Hết hiệu lực
• Tên tiếng Anh / Title in English: Standard Practice for Validation of Empirically Derived Multivariate Calibrations
• Chỉ số phân loại Quốc tế (ICS) / By field: 17.020 - Ðo lường và phép đo nói chung
• Số trang / Page: 11
• Phạm vi áp dụng / Scope of standard: 1.1 This practice covers requirements for the validation of empirically derived calibrations (Note 1) such as calibrations derived by Multiple Linear Regression (MLR), Principal Component Regression (PCR), Partial Least Squares (PLS), Artificial Neural Networks (ANN), or any other empirical calibration technique whereby a relationship is postulated between a set of variables measured for a given sample under test and one or more physical, chemical, quality, or membership properties applicable to that sample. Note 1 - Empirically derived calibrations are sometimes referred to as "models" or "calibrations." In the following text, for conciseness, the term "calibration" may be used instead of the full name of the procedure. 1.2 This practice does not cover procedures for establishing said postulated relationship. 1.3 This practice serves as an overview of techniques used to verify the applicability of an empirically derived multivariate calibration to the measurement of a sample under test and to verify equivalence between the properties calculated from the empirically derived multivariate calibration and the results of an accepted reference method of measurement to within control limits established for the prespecified statistical confidence level. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.