“Grid shading by simulated annealing” [Martyn Plummer]


Source: Grid shading by simulated annealing (or what I did on my holidays), aka “fun with GCHQ job adverts”, by Martyn Plummer, developer of JAGS.


I wanted to solve the puzzle but did not want to sit down with a pencil and paper. So I decided to write an R program to solve it instead. Is this cheating? Crafty Alison seems to think so, but I was inspired by Christian Robert’s regular series of R-based solutions to the weekly Le Monde puzzle. He often uses probabilistic solutions to logical problems and I realised that this grid shading puzzle could be treated as a Bayesian inference problem.

About hypergeometric

See http://www.linkedin.com/in/deepdevelopment/ and http://667-per-cm.net
This entry was posted in approximate Bayesian computation, Bayesian, Bayesian inversion, Boltzmann, BUGS, Christian Robert, Gibbs Sampling, JAGS, likelihood-free, Markov Chain Monte Carlo, Martyn Plummer, mathematics, maths, MCMC, Monte Carlo Statistical Methods, optimization, probabilistic programming, SPSA, stochastic algorithms, stochastic search. Bookmark the permalink.

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