[Ipopt] IPOPT

[Ray Zimmerman]

If the objective function value at the solution is larger than the initial value it is probably safe to assume that the starting point is not feasible. The objective needs to increase in order to reduce the constraint violations. The iterates in an interior point algorithm like the one used by IPOPT need not be strictly feasible (and usually are not).

    Ray


> On Jun 4, 2015, at 1:07 AM, tonghan <hantong_eee at 126.com> wrote:
> 
> I am using IPOPT in MATLAB. In my test , the objective value is becoming larger, and finially the EXIT information is “EXIT: Solved To Acceptable Level.” I really feel puzzled. Could anyone help me? Thanks in advance.
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