https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Trust-Region-Size-Parameter-Choise/m-p/1120867#M24941 <P>Along this period, we have developed a calculation method that uses the Trust Region MKL API (with constraints).<BR /> We have build a procedure that works with this TR algorithm.<BR /> The procedure is called 4 times. Each time it is called it uses the previous results as input and the trust region size parameter change consequently: 100, 10, 1, 0.1&nbsp;</P> <P>We know that there is not a criteria of choise "region size parameter" so we decided to adopt this rule.</P> <P>is this choise correct, or it is enough to use alway only one value?</P> <P>maybe the order of these values can change something!</P> <P>&nbsp;</P> <P>Thank you very much</P> <P>Gianluca</P> Tue, 06 Jun 2017 13:36:16 GMT Gianluca_G_1 2017-06-06T13:36:16Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Trust-Region-Size-Parameter-Choise/m-p/1120867#M24941 <P>Along this period, we have developed a calculation method that uses the Trust Region MKL API (with constraints).<BR /> We have build a procedure that works with this TR algorithm.<BR /> The procedure is called 4 times. Each time it is called it uses the previous results as input and the trust region size parameter change consequently: 100, 10, 1, 0.1&nbsp;</P> <P>We know that there is not a criteria of choise "region size parameter" so we decided to adopt this rule.</P> <P>is this choise correct, or it is enough to use alway only one value?</P> <P>maybe the order of these values can change something!</P> <P>&nbsp;</P> <P>Thank you very much</P> <P>Gianluca</P> Tue, 06 Jun 2017 13:36:16 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Trust-Region-Size-Parameter-Choise/m-p/1120867#M24941 Gianluca_G_1 2017-06-06T13:36:16Z