I think that in a week or two I may have a problem like this. I will have a list of "concepts" and for every pair of concepts a measure of how often they are associated.
I would like to draw a diagram/map showing this association graphically in a web page. This problem sounds very much like one from cladistics
, but not being of that profession myself I would not know.
My proposed solution (ignoring edge cases and ambiguities)
- Find the pair with the highest association metric, draw them in the middle of the graph joined by a line.
- Those two nodes form the edge of the graph.
- For each node n in the edge of the graph, find the most highly associated two nodes not already taken and join them to n. They are now added to the edge and n removed from the edge.
- Go back to step 3.
- Is this algorithm (or variant) implemented as a perl module anywhere?
- If not any general thoughts?
- Are any you of you cladists?
I had another look on CPAN after looking at the word "cladogram" and came up with Bio::Phylo
. Still it's rather a lot for me to take in.
Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
Want more info? How to link
or How to display code and escape characters
are good places to start.