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<DIV><FONT size=2>Hello.everyone</FONT></DIV>
<DIV><FONT size=2>As far as I see, the Ipopt requires the Hesse matrix as the
input</FONT></DIV>
<DIV><FONT size=2>But when the constraint is too complex to be expressed
analytically, and I have to use some numeric method to calculate the
</FONT></DIV>
<DIV><FONT size=2>constraint and conresponding gradient vector, how can I
calculate the Hesse matrix numerically?</FONT></DIV>
<DIV><FONT size=2>I just know there are some methods to a approximate the
inverse of Hesse, but not for Hesse</FONT></DIV>
<DIV><FONT size=2>I read some posts and guess that for a C++ version IPOPT, the
current IPOPT does not support the approximation that I have to try a subroutine
myself?</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Thanks a lot!</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
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