All Jacobian elements in the row are very small

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Archiver
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All Jacobian elements in the row are very small

Post by Archiver » 11 years ago


Hi,

I solve my GAMS model by MPEC solver and 5 infeasible
solution with the following warning.

Does anybody have any idea how to address this warning, or
what this warning means?

Thanks a lot!

Lili


============================================================
===============================
** Warning ** All Jacobian elements in the rows marked
below are
less than the absolute pivot tolerance
1.0E-10 (Rtpiva)
in the final point. Only slacks or
artificials can
be basic in these rows.
A better scaling or better bounds on the
variables
may help the optimization.

Freq_Profitb(5,2): All Jacobian elements in the row are
very small.
Freq_Profitb(6,3): All Jacobian elements in the row are
very small.
Freq_Profitb(7,2): All Jacobian elements in the row are
very small.
Freq_Profitb(8,2): All Jacobian elements in the row are
very small.
Freq_Profitb(9,2): All Jacobian elements in the row are
very small.
Equ out of rage:=E " " 530 ": All Jacobian elements
in the row are very s

mall."
Equ out of rage:=E " " 533 ": All Jacobian elements
in the row are very s

mall."
Equ out of rage:=E " " 535 ": All Jacobian elements
in the row are very s

mall."
Equ out of rage:=E " " 542 ": All Jacobian elements
in the row are very s

mall."
Equ out of rage:=E " " 544 ": All Jacobian elements
in the row are very s

mall."
Equ out of rage:=E " " 548 ": All Jacobian elements
in the row are very s

mall."
Equ out of rage:=E " " 550 ": All Jacobian elements
in






Archiver
User
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Posts: 7876
Joined: 5 years ago

Re: All Jacobian elements in the row are very small

Post by Archiver » 11 years ago


Hi,

It happen the same error. I dont know how to solve the jacobian
elements.

On 10 jun, 15:54, "Lili Du" wrote:
> > Hi,
> >
> > I solve my GAMS model by MPEC solver and 5 infeasible
> > solution with the following warning.
> >
> > Does anybody have any idea how to address this warning, or
> > what this warning means?
> >
> > Thanks a lot!
> >
> > Lili
> >
> > ============================================================
> > ===============================
> > ** Warning ** All Jacobian elements in the rows marked
> > below are
> > less than the absolute pivot tolerance
> > 1.0E-10 (Rtpiva)
> > in the final point. Only slacks or
> > artificials can
> > be basic in these rows.
> > A better scaling or better bounds on the
> > variables
> > may help the optimization.
> >
> > Freq_Profitb(5,2): All Jacobian elements in the row are
> > very small.
> > Freq_Profitb(6,3): All Jacobian elements in the row are
> > very small.
> > Freq_Profitb(7,2): All Jacobian elements in the row are
> > very small.
> > Freq_Profitb(8,2): All Jacobian elements in the row are
> > very small.
> > Freq_Profitb(9,2): All Jacobian elements in the row are
> > very small.
> > Equ out of rage:=E " " 530 ": All Jacobian elements
> > in the row are very s
> >
> > mall."
> > Equ out of rage:=E " " 533 ": All Jacobian elements
> > in the row are very s
> >
> > mall."
> > Equ out of rage:=E " " 535 ": All Jacobian elements
> > in the row are very s
> >
> > mall."
> > Equ out of rage:=E " " 542 ": All Jacobian elements
> > in the row are very s
> >
> > mall."
> > Equ out of rage:=E " " 544 ": All Jacobian elements
> > in the row are very s
> >
> > mall."
> > Equ out of rage:=E " " 548 ": All Jacobian elements
> > in the row are very s
> >
> > mall."
> > Equ out of rage:=E " " 550 ": All Jacobian elements
> > in



Archiver
User
User
Posts: 7876
Joined: 5 years ago

Re: All Jacobian elements in the row are very small

Post by Archiver » 11 years ago


I finally solve this problem by assigning suitable starting point of
our problem. Namely I gave propoer .lo values to some nonlinear
variables. Hope this can help other people in the future.

Lili

On Jun 10, 10:54 am, "Lili Du" wrote:
> > Hi,
> >
> > I solve my GAMS model by MPEC solver and 5 infeasible
> > solution with the following warning.
> >
> > Does anybody have any idea how to address this warning, or
> > what this warning means?
> >
> > Thanks a lot!
> >
> > Lili
> >
> > ============================================================
> > ===============================
> > ** Warning ** All Jacobian elements in the rows marked
> > below are
> > less than the absolute pivot tolerance
> > 1.0E-10 (Rtpiva)
> > in the final point. Only slacks or
> > artificials can
> > be basic in these rows.
> > A better scaling or better bounds on the
> > variables
> > may help the optimization.
> >
> > Freq_Profitb(5,2): All Jacobian elements in the row are
> > very small.
> > Freq_Profitb(6,3): All Jacobian elements in the row are
> > very small.
> > Freq_Profitb(7,2): All Jacobian elements in the row are
> > very small.
> > Freq_Profitb(8,2): All Jacobian elements in the row are
> > very small.
> > Freq_Profitb(9,2): All Jacobian elements in the row are
> > very small.
> > Equ out of rage:=E " " 530 ": All Jacobian elements
> > in the row are very s
> >
> > mall."
> > Equ out of rage:=E " " 533 ": All Jacobian elements
> > in the row are very s
> >
> > mall."
> > Equ out of rage:=E " " 535 ": All Jacobian elements
> > in the row are very s
> >
> > mall."
> > Equ out of rage:=E " " 542 ": All Jacobian elements
> > in the row are very s
> >
> > mall."
> > Equ out of rage:=E " " 544 ": All Jacobian elements
> > in the row are very s
> >
> > mall."
> > Equ out of rage:=E " " 548 ": All Jacobian elements
> > in the row are very s
> >
> > mall."
> > Equ out of rage:=E " " 550 ": All Jacobian elements
> > in



Archiver
User
User
Posts: 7876
Joined: 5 years ago

Re: All Jacobian elements in the row are very small

Post by Archiver » 8 years ago


hallo lili

i also have the same problem like you had 2 years ago.

1 error(s): Infeasible row with only small Jacobian elements.

what did you have done to solve this problem?

thx

chen from germany

Am Donnerstag, 16. Juni 2011 23:16:31 UTC+2 schrieb LL:

I finally solve this problem by assigning suitable starting point of
our problem. Namely I gave propoer .lo values to some nonlinear
variables. Hope this can help other people in the future.

Lili

On Jun 10, 10:54 am, "Lili Du" wrote:
> Hi,
>
> I solve my GAMS model by MPEC solver and 5 infeasible
> solution with the following warning.
>
> Does anybody have any idea how to address this warning, or
> what this warning means?
>
> Thanks a lot!
>
> Lili
>
> ============================================================
> ===============================
> ** Warning ** All Jacobian elements in the rows marked
> below are
> less than the absolute pivot tolerance
> 1.0E-10 (Rtpiva)
> in the final point. Only slacks or
> artificials can
> be basic in these rows.
> A better scaling or better bounds on the
> variables
> may help the optimization.
>
> Freq_Profitb(5,2): All Jacobian elements in the row are
> very small.
> Freq_Profitb(6,3): All Jacobian elements in the row are
> very small.
> Freq_Profitb(7,2): All Jacobian elements in the row are
> very small.
> Freq_Profitb(8,2): All Jacobian elements in the row are
> very small.
> Freq_Profitb(9,2): All Jacobian elements in the row are
> very small.
> Equ out of rage:=E " " 530 ": All Jacobian elements
> in the row are very s
>
> mall."
> Equ out of rage:=E " " 533 ": All Jacobian elements
> in the row are very s
>
> mall."
> Equ out of rage:=E " " 535 ": All Jacobian elements
> in the row are very s
>
> mall."
> Equ out of rage:=E " " 542 ": All Jacobian elements
> in the row are very s
>
> mall."
> Equ out of rage:=E " " 544 ": All Jacobian elements
> in the row are very s
>
> mall."
> Equ out of rage:=E " " 548 ": All Jacobian elements
> in the row are very s
>
> mall."
> Equ out of rage:=E " " 550 ": All Jacobian elements
> in

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Archiver
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Posts: 7876
Joined: 5 years ago

Re: All Jacobian elements in the row are very small

Post by Archiver » 6 years ago


Hi Lili,

This was really Helpful. Thanks.

Regards,
Narayen

On Thursday, 16 June 2011 23:16:31 UTC+2, LL wrote:

I finally solve this problem by assigning suitable starting point of
our problem. Namely I gave propoer .lo values to some nonlinear
variables. Hope this can help other people in the future.

Lili

On Jun 10, 10:54 am, "Lili Du" wrote:
> Hi,
>
> I solve my GAMS model by MPEC solver and 5 infeasible
> solution with the following warning.
>
> Does anybody have any idea how to address this warning, or
> what this warning means?
>
> Thanks a lot!
>
> Lili
>
> ============================================================
> ===============================
> ** Warning ** All Jacobian elements in the rows marked
> below are
> less than the absolute pivot tolerance
> 1.0E-10 (Rtpiva)
> in the final point. Only slacks or
> artificials can
> be basic in these rows.
> A better scaling or better bounds on the
> variables
> may help the optimization.
>
> Freq_Profitb(5,2): All Jacobian elements in the row are
> very small.
> Freq_Profitb(6,3): All Jacobian elements in the row are
> very small.
> Freq_Profitb(7,2): All Jacobian elements in the row are
> very small.
> Freq_Profitb(8,2): All Jacobian elements in the row are
> very small.
> Freq_Profitb(9,2): All Jacobian elements in the row are
> very small.
> Equ out of rage:=E " " 530 ": All Jacobian elements
> in the row are very s
>
> mall."
> Equ out of rage:=E " " 533 ": All Jacobian elements
> in the row are very s
>
> mall."
> Equ out of rage:=E " " 535 ": All Jacobian elements
> in the row are very s
>
> mall."
> Equ out of rage:=E " " 542 ": All Jacobian elements
> in the row are very s
>
> mall."
> Equ out of rage:=E " " 544 ": All Jacobian elements
> in the row are very s
>
> mall."
> Equ out of rage:=E " " 548 ": All Jacobian elements
> in the row are very s
>
> mall."
> Equ out of rage:=E " " 550 ": All Jacobian elements
> in

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ecuster2018
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Posts: 1
Joined: 1 month ago

Re: All Jacobian elements in the row are very small

Post by ecuster2018 » 1 month ago

Hope this can help you!
Recently, I use nlpec solver to solve a bi-level program with complementary constranits. I have ecountered the same problem. I find that there is no non-linear variables in my model and the bound of variables can not be set arbitrarily for some reason. Follows by the option setting below, I got the correat solution

option MPEC = nlpec;
$onecho > nlpec.opt
refType mult
slack positive
initmu 1.0
numsolves 4
updatefac 0.1
finalmu 1e-6
$offecho

Note that the initmu must not set too big.

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