Patrick Cloutier, Cristian Tibirna, Bernard Grandjean* et Jules Thibault
Department of Chemical Engineering, Laval University
Sainte-Foy (Québec) CANADA G1K 7P4
(* contact)
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nnfit Software description:

NNFit (Neural Network Fitting) is
a non-linear regression program
based on multilayered neural network models.
NNFit allows the userfriendly development and application of neural emprirical relations between input and output variables. For the sake of usability, the program displays:
  • various tables that give statistical informations on prediction model errors (minimum, maximum, mean, standard deviation, correlation coefficients)
  • various figures that easier to judge the performance of the developped models.


    nnfit  Documentation:

    Copies of the documentation are available in many forms: HTML on line, HTML pages archive, PostScript file archive. If problems arise for downloading these ressources, we can also send the documentation by e-mail. Send a message having the subjet "Query for documentation" and indicating the e-mail address to which the send to be done, and also the format (HTML or PostScript). 

    nnfit  Distributions available: 

    The program is available for the platforms indicated here after, as precompiled binaries. Each distribution file contains the executable and a data file demo.dat (the examples illustrated in the manual are done with these data). The binaries should function at least on systems compatible with the ones indicated in the table. 
    Files Size  Compiled 
    AIX nnfit2.0_aix.tar.gz 369 k  IBM AIX R 3.2.5 
    DEC/Alpha nnfit2.0_dec.tar.gz 377 k  Digital Unix 3.0
    HPUX  nnfit2.0_hp.tar.gz


    321 k 

    326 k

    HP-UX A.09.05 

    HP-UX 10.

    Linux dynamique nnfit2.0_linux.dyn.tar.gz 233 k  lié contre libc-5.3.12 sur Linux 2.0.27 ELF 
    Linux statique nnfit2.0_linux.stat.tar.gz 546 k  Linux 2.0.27 ELF
    SGI nnfit2.0_sgi.tar.gz 394 k  Irix 5.3 
    SUN nnfit2.0_sun.tar.gz 357 k  SunOS 4.1.4 

    The XForms library is not required. 
    The dynamically linked Linux binary will function on Linux systems having libc at least version 5.3.12. However, the statically linked one should function on any ELF capable Linux system.

    The version 1.0 of NNFit is still available through this link (french only). 
    The development of NNFit was conducted primarily on systems base on Linux.
    The graphics library used for building the NNFit's graphic interface is XForms.
    The graphics in these pages are made by GIMP
    Professors Grandjean and Thibault acknowledge the support of the Natural Sciences and Engineering Research Council of Canada.
    The authors acknowledge the assistance or support of:
    -Florent Parent and professor René Lacroix for compilation on Sun and SGI
    -Jean-Jacques Maine and professor Dudukovic (Washington University) for compilation on DEC.
    Administrator of pages: Cristian Tibirna 
    last modified: 25.06.2002