Re: [UAI] Has anyone else noticed how odd many frequentist techniques are?

2014-09-27 Thread Konrad Scheffler
t; ___ >> uai mailing list >> uai@ENGR.ORST.EDU >> https://secure.engr.oregonstate.edu/mailman/listinfo/uai >> >> > >

Re: [UAI] Is it luck or is it skill - my resolution

2005-06-29 Thread Konrad Scheffler
Hi Rich, In your analysis you present a frequentist and a Bayesian approach, arguing that the paradox exists only for the frequentist case. Fair enough. I would just like to point out that the frequentist approach (orthodox hypothesis testing) is even more problematic than that, in that it eff

Re: [UAI] Is it a paradox?

2005-07-15 Thread Konrad Scheffler
On Tue, 12 Jul 2005 [EMAIL PROTECTED] wrote: > Consider the following line of reasoning. Let p be the proposition > "Ronald was born in New York." From p, we can infer q: Ronald was born > in the United States. > From q, we can infer r: It is possible that Ronald > was born in New Jersey. That's

Re: [UAI] A test problem involving imprecise probabilities

2005-09-30 Thread Konrad Scheffler
Hmm, no takers on this one yet? I'll rephrase the problem in a way that makes more sense to me (since the original contains words I don't know the meaning of): X and Y are unknown variables taking values in the set (1, 2, ..., n). The entries in the joint probability matrix, P, are unknown

Re: [UAI] Determinism verses chance

2006-08-20 Thread Konrad Scheffler
Hi Marcus, Indeed it is not a novel line of thought - you will find many related ideas in the work of Jaynes, which proposes a form of (objective) probability theory without the concept of randomness. I have also seen arguments for interpretations of quantum theory without the concept of rando

[UAI] Studentships available in evolutionary modelling at Stellenbosch University

2008-04-24 Thread Konrad Scheffler
CV (which should include information on your most advanced computer programming project to date) and a covering letter to Dr Konrad Scheffler ([EMAIL PROTECTED]). Alternatively, please get in touch by e-mail or phone (021 808 4306) to request more information about the project

Re: [UAI] Computation with Imprecise Probabilities--The problem of Vera's age

2008-08-04 Thread Konrad Scheffler
uot;, the former encapsulates it while the latter does not - perhaps you can convince me otherwise). Regards, Konrad ---- Dr Konrad Scheffler Computer Science Division Dept of Mathematical Sciences University of Stellenbosch +

Re: [UAI] A perplexing problem

2009-02-16 Thread Konrad Scheffler
Hi Paul, Your calculation is correct, but the numbers in the example are odd. If TWC really only manage to predict snow 10% of the time (90% false negative rate), you would be right not to assign much value to their predictions (you do assign _some_, hence the seven-fold increase from your prio

Re: [UAI] A perplexing problem - Version 2

2009-02-21 Thread Konrad Scheffler
I agree this is problematic - the notion of calibration (i.e. that you can say P(S|"70%") = .7) does not really make sense in the subjective Bayesian framework where different individuals are working with different priors, because different individuals will have different posteriors and they ca

Re: [UAI] A perplexing problem - Last Version

2009-02-25 Thread Konrad Scheffler
Dear Paul, Bayesian inference is still appropriate for both problems. There are two issues here: 1) the subjectivist Bayesian viewpoint is confusing because it does not make it explicit on which information you are conditioning when setting up your prior - it becomes much clearer if you

Re: [UAI] A perplexing problem - Version 2

2009-02-25 Thread Konrad Scheffler
On Mon, 23 Feb 2009, Francisco Javier Diez wrote: > Konrad Scheffler wrote: > > I agree this is problematic - the notion of calibration (i.e. that you can > > say P(S|"70%") = .7) does not really make sense in the subjective Bayesian > > framework where differe