On Least Squares Exponential Sum Approximation With Positive Coefficients*
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چکیده
An algorithm is given for finding optimal least squares exponential sum approximations to sampled data subject to the constraint that the coefficients appearing in the exponential sum are positive. The algorithm employs the divided differences of exponentials to overcome certain problems of ill-conditioning and is suitable for data sampled at noninteger times.
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تاریخ انتشار 2010