[Haskell-cafe] Why monoids will abide...
wagner.andrew at gmail.com
Thu Jan 22 10:09:24 EST 2009
See, that's the kind of name we need!
StructureWithAssociativeOperationAndIdentity -- make both the mathematicians
AND the non-mathematicians mad!
On Thu, Jan 22, 2009 at 9:53 AM, Dan Piponi <dpiponi at gmail.com> wrote:
> On Wed, Jan 21, 2009 at 11:12 PM, Eugene Kirpichov <ekirpichov at gmail.com>
> > To my mind, in the map-reduce case you generally need a commutative
> > monoid. Or, you need an extra infrastructure that mappend's only
> > results from adjacent machines, or something like that.
> This is a good paper on the stuff I'm talking about:
> http://citeseer.ist.psu.edu/blelloch90prefix.html It doesn't
> explicitly mention monoids but it's all about associative operations
> with identity.
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