[astro] Re: BUGG??

[Malik Magdon-Ismail]

Hi,

I ran with 100 parameters and it converged in about 80 iterations to 
10^(-15).

-Malik

--------------------------------------------------------------------------
Have Faith in Probability
-Malik Magdon-Ismail
  Associate Professor of Computer Science
  Rensselaer Polytechnic Institute (RPI)

  Office: Rm 312 Lally           mail:   Rm 207, Lally Building,
  email:  magdon at cs.rpi.edu              CS Department, RPI,
  tel:    518-276-4857                   110 8th Street,
  fax:    518-276-4033                   Troy, NY 12180-3590.
  http://www.cs.rpi.edu/~magdon
--------------------------------------------------------------------------

On Mon, 18 Jun 2007, Malik Magdon-Ismail wrote:

> Hi,
> I am attaching my results for conjugate gradient. Notice (in accord with
> the theorem I told you about) after 20 iterations, the optimization is
> basically done. The function value attained is 10^(-17)!
>
> I have attached the values I used for a and x0 (the start value).
> stats.dat gives the optimization path. The first column is iteration
> number and the second is function value, the third is gradient norm and
> the 4th is #function evals for that iteration. Ignore the last 2 columns
> for now.
>
> The zipped directory contains my matlab implementation. I have the C
> version but I wrote it so long ago that it uses outdated compilers and
> hard wired paths so it would take longer to get that up. Please compare my
> code with yours to find the discrepancy.
>
> -Malik
>
>
> --------------------------------------------------------------------------
> Have Faith in Probability
> -Malik Magdon-Ismail
>  Associate Professor of Computer Science
>  Rensselaer Polytechnic Institute (RPI)
>
>  Office: Rm 312 Lally           mail:   Rm 207, Lally Building,
>  email:  magdon at cs.rpi.edu              CS Department, RPI,
>  tel:    518-276-4857                   110 8th Street,
>  fax:    518-276-4033                   Troy, NY 12180-3590.
>  http://www.cs.rpi.edu/~magdon
> --------------------------------------------------------------------------
>
> -- Binary/unsupported file stripped by Ecartis --
> -- Type: APPLICATION/postscript
> -- File: funcplot.eps
>
>
> -- Binary/unsupported file stripped by Ecartis --
> -- Type: APPLICATION/postscript
> -- File: iterplot.eps
>
>
> -- Attached file included as plaintext by Ecartis --
> -- File: a.dat
>
>   7.9482108e+00
>   9.5684345e+00
>   5.2259035e+00
>   8.8014221e+00
>   1.7295614e+00
>   9.7974690e+00
>   2.7144726e+00
>   2.5232935e+00
>   8.7574190e+00
>   7.3730599e+00
>   1.3651874e+00
>   1.1756687e-01
>   8.9389797e+00
>   1.9913807e+00
>   2.9872301e+00
>   6.6144258e+00
>   2.8440859e+00
>   4.6922429e+00
>   6.4781123e-01
>   9.8833494e+00
>
> -- Attached file included as plaintext by Ecartis --
> -- File: x0.dat
>
>   6.2323385e-01
>   7.9904862e-01
>   9.4088994e-01
>  -9.9209174e-01
>   2.1203515e-01
>   2.3788207e-01
>  -1.0077634e+00
>  -7.4204475e-01
>   1.0822950e+00
>  -1.3149970e-01
>   3.8988049e-01
>   8.7987107e-02
>  -6.3546523e-01
>  -5.5957330e-01
>   4.4365349e-01
>  -9.4990380e-01
>   7.8118162e-01
>   5.6896065e-01
>  -8.2171429e-01
>  -2.6560685e-01
>
> -- Attached file included as plaintext by Ecartis --
> -- File: stats.dat
>
>   1.0000000e+00   5.2425449e+00   3.9243295e+01   1.5000000e+01   1.0000000e-01   1.1773000e-02
>   2.0000000e+00   1.1422878e+00   8.6765273e+00   1.2000000e+01   1.0000000e-01   8.4690000e-03
>   3.0000000e+00   3.2193414e-01   3.9091104e+00   1.2000000e+01   1.0000000e-01   3.0930000e-03
>   4.0000000e+00   1.5989415e-01   1.8297402e+00   1.2000000e+01   1.0000000e-01   3.0980000e-03
>   5.0000000e+00   8.0912216e-02   9.1901998e-01   1.5000000e+01   1.0000000e-01   3.1190000e-03
>   6.0000000e+00   2.2746551e-02   8.3362898e-01   1.8000000e+01   1.0000000e-01   3.3830000e-03
>   7.0000000e+00   1.0389178e-02   4.7310459e-01   1.0000000e+01   1.0000000e-01   4.4770000e-03
>   8.0000000e+00   2.4818736e-03   3.1626082e-01   1.1000000e+01   1.0000000e-01   2.9920000e-03
>   9.0000000e+00   9.6525194e-04   1.8502713e-01   1.3000000e+01   1.0000000e-01   3.2770000e-03
>   1.0000000e+01   4.9940846e-04   7.9555582e-02   1.5000000e+01   1.0000000e-01   1.9650000e-03
>   1.1000000e+01   3.5056829e-04   4.2293092e-02   1.7000000e+01   1.0000000e-01   3.4550000e-03
>   1.2000000e+01   3.1706569e-04   2.4632972e-02   1.9000000e+01   1.0000000e-01   4.4420000e-03
>   1.3000000e+01   2.4816038e-04   1.9296104e-02   1.8000000e+01   1.0000000e-01   3.2560000e-03
>   1.4000000e+01   1.8129217e-04   2.3905342e-02   1.7000000e+01   1.0000000e-01   3.1940000e-03
>   1.5000000e+01   2.8580293e-05   3.4871917e-02   1.5000000e+01   1.0000000e-01   3.1370000e-03
>   1.6000000e+01   5.9731456e-06   2.4108632e-02   1.8000000e+01   1.0000000e-01   3.6450000e-03
>   1.7000000e+01   3.1553418e-07   7.5515993e-03   2.1000000e+01   1.0000000e-01   3.9350000e-03
>   1.8000000e+01   9.6678422e-08   1.8111476e-03   2.6000000e+01   1.0000000e-01   3.5400000e-03
>   1.9000000e+01   7.2590362e-10   1.3768240e-03   2.7000000e+01   1.0000000e-01   3.6460000e-03
>   2.0000000e+01   2.3907847e-17   8.9659080e-05   3.5000000e+01   1.0000000e-01   3.6290000e-03
>
> -- Binary/unsupported file stripped by Ecartis --
> -- Type: APPLICATION/x-zip-compressed
> -- File: hessian_conj_grad.zip
>
>
>
>