Dear Dr. Marcos-Ortega: Are you aware of the algorithm to remove cycles from a weighted digraph?
<http://people.clas.ufl.edu/ulan/files/Cyclng83.pdf> It is available as a DOS routine <http://www.cbl.umces.edu/~ulan/ntwk/network.html> (see NETWRK4.2) or in R for Windows <https://cran.r-project.org/web/packages/enaR/enaR.pdf> (see enaCycle). Sincerely, R. Ulanowicz P.S. Actually, in ecology, we discovered that cycles actually indicate the domains of control. > Hi Jerry, > > Thank you for your comments and questions. Also apologies for late > response but I was on a trip. > > As for your question about cycles, actions can certainly be modeled as > graphs that include cycles. We restricted our characterization to trees > because: > a) cycles can imply infinite loops that in our opinion are not appropriate > to model human actions > b) even considering cycles a set of actions can still be modeled a as a > tree, so we consider that loops add unnecessary complexity to the model > > Furthermore, we understand the products of cyclic social processes like > methods and procedures as technologies that embed information. All in all, > we agree that a characterization of graphs can be useful to quantify > information embedded in artifacts. > > Regards, > > Luis de Marcos Ortega > Dpto Ciencias de la Computación Computer Science Department > Universidad de Alcalá University of > Alcalá > http://www.uah.es/pdi/luis_demarcos > > "Education, n. That which discloses to the wise and disguises from the > foolish their lack of understanding." Ambrose G. Bierce. > > From: Fis [mailto:[email protected]] On Behalf Of Jerry LR > Chandler > Sent: jueves, 23 de julio de 2015 17:02 > To: FIS Science <[email protected]> > Subject: Re: [Fis] Information Foundation of the Act--F.Flores & > L.deMarcos > > > List: > > This comment is restricted to the proposed use of mathematical structures > in context of the social. > > The mathematical structure of a tree is restricted by the notion of a > cycle. > A tree is readily converted into a cycle by simply adding a new edge > between leaves or joints. > The simple logic of a tree is lost by including cyclic relations. > > It appears to me that the rhetorical arguments may include inferences > requiring cycle relations. > > What would be the nature of the inferences if the hypotheses allowed for > cyclic social processes, such as learning on the basis of annual > agricultural or hunting cycles? > > Cheers > > Jerry > > > > _______________________________________________ > Fis mailing list > [email protected] > http://listas.unizar.es/cgi-bin/mailman/listinfo/fis > _______________________________________________ Fis mailing list [email protected] http://listas.unizar.es/cgi-bin/mailman/listinfo/fis
