On Wed, 2006-10-18 at 12:19 -0700, David Doshay wrote:
> Are the elo ratings integer or floats?
> 
> I am just wondering if partial (less than one) ratings build up or  
> are truncated.

CGOS tracks the ratings as floating point numbers but rounds the results
for display.

If you see two identical ratings on CGOS, the one listed on top is the
higher rating, even if only by a tiny fraction.

But even if they were integers, it would make little difference since
ELO is self balancing.   If a few wins failed to give you the credit you
deserve due to roundoff,  then you become slightly under-rated, which
causes further wins to count more, and further losses to have less
impact.  It would be very difficult to get off by more than a very few
ELO points due to round-off error.

In clubs, they often rate with a rating chart, that is integer based and
this is perfectly adequate.   

- Don


> Cheers,
> David
> 
> 
> 
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