Hello Monks,

i'm trying to use AI::DecisionTree http://search.cpan.org/~kwilliams/AI-DecisionTree-0.09/DecisionTree.pm.My data throws an error saying that it is noisy - so I want to set the noisemode to select best

here is the section from the documentation

new(...parameters...)

Creates a new decision tree object and returns it. Accepts the following parameters:

noise_mode

Controls the behavior of the train() method when "noisy" data is encountered. Here "noisy" means that two or more training instances contradict each other, such that they have identical attributes but different results.

If noise_mode is set to fatal (the default), the train() method will throw an exception (die). If noise_mode is set to pick_best, the most frequent result at each noisy node will be selected.

Could someone show me the exact declaration to do this?

2) Also I'm trying to install the graphviz module inorder to get my drawing output - i am on activestate perl 5.10 on windows XP.i tried to download the module out of CPAN since it is not available in ppm.I have already installed graphviz - it fails make saying that it cannot find "dot.exe".Any help installing this module would be greatly appreciated.

Thanks

In reply to 2 questions with regard to ai::decisiontrees by smanicka

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.