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From Lance Norskog <>
Subject Re: Can Mahout make recommendations while the recommender is being refreshed?
Date Sun, 21 Nov 2010 04:44:57 GMT
Another option is to change the Double arrays to Floats.

I tried this on one of the Recommenders (can't remember which one) and
the speed and result value were exactly the same.

On Fri, Nov 19, 2010 at 1:46 PM, Ted Dunning <> wrote:
> If you are running that close to full, then running more than one
> recommender might be a preferable solution.  You can take one off-line,
> update it, bring it back, update the other.  This decreases redundancy for a
> small period, but that is usually an acceptable risk.
> On Fri, Nov 19, 2010 at 1:44 PM, Sebastian Schelter <> wrote:
>> Good thing to talk about that issue, it's really not an ideal situation
>> to have FileDataModel need double memory at refresh time as it
>> effectively cuts in a half the amount of preferences that can be loaded
>> into per memory per machine.

Lance Norskog

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