The article presents issues related to the use of condition numbers and orthogonal transformations .A priori assessment was considered using the Euclidean matrix norm. The accuracy of the calculations has been determined. Linear transformation having an orthogonal matrix has been done. Also, an algorithm for checking the quality of the model by finding the condition number of the matrix was considered. A program has been developed to solve this problem.
condition number, orthogonal transformations, matrices, a priori assessment, dataware
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