Hello, On Fri, 2006-12-08 at 18:33 +0100, Dmitry wrote:

For a some time I've been using my own implementation for calculating of the minimum cycle ratio of the directed multigraph, it based on the approach described in the paper "Numerical Computation of Spectral Elements in MAX-PLUS algebra" and seems has complexity close to linear in the respect of the edges number (both in memory and time).

Does current BGL has some solutions for cycle ratio problem?

We do not have any algorithm implementations for this problem in the BGL.

I would like to try to contribute my "perfect" implementation to BGL if it's possible. What is need to be done for it?

Great! The major components of an algorithm submission to the BGL are: - The algorithm implementation itself: please be sure to follow the general coding style of the BGL - Documentation: Should be written in HTML, with the same format and style as existing BGL algorithms. - Tests: Please provide a standalone testcase that builds a few sample graphs, runs the algorithm, and checks the results. I strongly suggest using adjacency_list for the graph type, because that tends to find many common mistakes in BGL algorithms. - Examples: Please provide at least one example file that illustrates how to use your algorithm. This example is typically part of the documentation. When you're ready to submit your algorithm implementation, please upload it to the Boost file vault at http://www.boost-consulting.com/vault/ and send a message to the Boost list to tell us that it's there. We'll give the code an informal review and, once everything's in good shape, integrate it into Boost CVS for an upcoming Boost release. We're looking forward to including your algorithm implementation in the BGL! Cheers, Doug