I've spent a good couple hours this evening trying to figure out the intent of this code, and actually using my own data. I'm not there yet.

I understand Bit::Vector, and making vectors that are the width of the keyword table, and marking the keyword bits for a given item.

You don't seem to need the first gang of bit vectors at all; you are marking item bits in item-wide vectors, then never using those vectors.

I understand what I read in Graph::UnionFind, but not its algorithm internally, but I might not need to. I think I understand the output it should give.

What I don't understand is the way you're trying to combine these methods, and second-guessing the Graph::UnionFind's results on each loop.

It seems to me that I can use G::UF without bit vectors at all, adding edges between correlated keywords, and then scan each partition for what keywords are in each partition.

Can you speak more to your reasoning?

--
[ e d @ h a l l e y . c c ]

In reply to Re^3: algorithm for 'best subsets' by halley
in thread algorithm for 'best subsets' by halley

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.