On 13 juin 2011, at 10:12, Rémi Coulom wrote:

> On 12 juin 2011, at 19:46, Petr Baudis wrote
>> 
>> I coined the term but did not invent the concept. I think the earliest
>> mention of the formula is in Sterm et al, Bayesian Pattern Ranking for
>> Move Prediction in the Game of Go; it was also for sure mentioned in
>> Remi's Elo pattern paper.
> 
> The MS guys used a different distance. But the idea is so simple I am sure it 
> was independently invented by many. After a quick Google search, I found that 
> paper that calls it the "Manhattan-Chebychev Distance":
> http://www.phybit.com/docs/mcd.pdf

"octagonal distance" seems a more common name:
http://www.sciencedirect.com/science/article/pii/002002559090008X

Rémi
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