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Sim-OPT-0.79.7
River stage zero No dependents
/ Sim::OPT::Interlinear.

NAME

Sim::OPT::Interlinear. CHECKING =head1 SYNOPSIS From Perl (via "re.pl" or in a Perl program): interlinear( "/path/to/a/pre-prepared-configfile.pl", "/path/to/a/pre-prepared-sourcefile.csv" );

  or from the command line:
  interlinear .
  (note the dot at the end), to use the file as a script and include the location of the source file directly in the configuration file;

  or from the command line:
  interlinear interstart
  to begin with a dialogue question.

DESCRIPTION

Interlinear is a program for computing the missing values in multivariate datasieries pre-prepared in csv format. The program can adopt the following algorithmic strategies and intermix their result: a) propagating distance-weighted gradient-based strategy (by far the best one so far, keeping into account that the behaviour of factors is often not linear and there are curvatures all aroung the design space); b) pure linear interpolation (one may want to use this in some occasions: for example, if there are factorials); c) nearest neighbour. This is a strategy of last resort. One may want to use it to unlock a computation which is based on data which are too sparse to proceed, or when nothing else works. A configuration file should be prepared following the example in the "examples" folder in this distribution. If the configuration file is incomplete or missing, the program adopts its own defaults; which adopt the distance-weighted gradient-based strategy. The only variables that must mandatorily be specified in a configuration file are $sourcefile and (curently)%factlevels. The operations entailed are linear but the results of their interplay are not. The operations can be weighted and the strategies can be intermixed. The source cvs file has to be prepared listing in cvs format in each column the parameter (factor, variable) values (levels) and the last column the objective function value, when present. The parameter (variable, factor) number is given by the position of the column (i.e. column 4 host parameter 4). Here below is shown an example of multivatiate dataseries of 3 parameters assuming 3 levels with missing objecive function entries.

1,1,1,1.234 1,2,3,2,1.500 1,3,3,3 2,1,3,1,1.534 2,2,3,2,0.000 2,3,3,0.550 3,1,3,1 3,2,3,2,0.670 3,3,3,3

The program converts this format into the one liked by Sim::OPTS, which is the following:

1-1_2-1_3-1,9.234 1-1_2-2_3-2,4.500 1-1_2-3_3-3 1-2_2-1_3-1,7.534 1-2_2-2_3-2,0.000 1-2_2-3_3-3,0.550 1-3_2-1_3-1 1-3_2-2_3-2,0.670 1-3_2-3_3-3

After some computations, the program will output a new dataseries, with the missing values filled in.

EXPORTUser menu

interlinear, interstart.

SEE ALSO

An example of configuration file can be found in the "examples" folder in this distribution.

AUTHOR

Gian Luca Brunetti, <gianluca.brunetti@polimi.it>

COPYRIGHT AND LICENSE

Copyright (C) 2018 by Gian Luca Brunetti and Politecnico di Milano. This is free software. You can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 3 or newer.