From Nanu, a springalgo that might be incremental.

---------- Forwarded message ----------
Date: Mon, 8 Apr 2002 15:38:43 -0500 (EST)
From: NANU IYER
To: cjdent
Cc: Katy Borner
Subject: Another interesting algo

and this one claims to be incremental. Enjoy.

full text at:

portal.acm.org/citation.cfm?id=264657&coll=portal&dl=ACM&CFID=2236612&CFTOKEN=87920264">http://portal.acm.org/citation.cfm?id=264657&coll=portal&dl=ACM&CFID=2236612&CFTOKEN=87920264