My commute to work involves stumbling down one flight of stairs to the kitchen for coffee, then another flight to my office in the basement, and I'm rarely insightful during the trip, so I won't say anything too provocative ;)

However, I will point out that E-Bitch's comments reminded me of something I found through PM. Check out ZZamboni's home node, and his Ph.D. dissertation at Purdue. It seems to me that it's very closely related, perhaps one could claim even an implementation of your idea. And it's written in Perl.

When I first looked at his work, I thought about asking to be one of his test nodes. I decided that anything less than a few days of study (and possibly much more) would be inadequate for understanding, and I haven't had enough time to put into it, so I've never inquired. But someone a little closer to the problem might be able to show how he addresses some of these problems.

Sorry for the half-baked response. I forgot to grab the coffee on my way through the kitchen this morning ;)

Update: Replaced thesis with dissertation later the same day, as I later realized that thesis was not the right word. Also added commentary that I may not understand Zzamboni's work with only a few days study ;)