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  Topic: Evolutionary Computation, Stuff that drives AEs nuts< Next Oldest | Next Newest >  

Posts: 301
Joined: May 2008

(Permalink) Posted: May 24 2012,03:13   

Quote (DiEb @ Mar. 13 2012,22:19)
I just took another go on Dembski's and Marks's Horizontal No Free Lunch Theorem, as KairosFocus referred to it at UncommonDescent:

On a Wrong Remark in a Paper of Robert J. Marks II and William A Dembski

Abstract: In their 2010 paper The Search for a Search - Measuring the Information Cost of Higher Level Search, the authors William A. Dembski and Robert J. Marks II present as one of two results their so-called Horizontal No Free Lunch Theorem. One of the consequences of this theorem is their remark: If no information about a search exists, so that the underlying measure is uniform, then, on average, any other assumed measure will result in negative active information, thereby rendering the search performance worse than random search. This is quite surprising, as one would expect in the tradition of the No Free Lunch theorem that the performances are equally good (or bad). Using only very basic elements of probability theory, this essay shows that their remark is wrong - as is their theorem.

The whole essay can be found here.

I was just informed by Winston Ewert that there is a new erratum at the paper A Search for a Search which should address (some of) my points. Here is my first reaction. And does the Journal of Advanced Computational Intelligence and Intelligent Informatics know?

  405 replies since Mar. 17 2009,11:00 < Next Oldest | Next Newest >  

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