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From: Ted Dunning <ted.dunning@gmail.com>
Date: Fri, 10 Jul 2009 11:35:22 -0700
Message-ID: <c7d45fc70907101135s305ae59fo72cc6fe51a6382c9@mail.gmail.com>
Subject: Re: Memory and Speed Questions for Item-Based-Recommender
To: mahout-user@lucene.apache.org
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Storing the item-item links in Lucene and forming a query with recent
history is a pretty easy way to get real-time recommendations.  This can
also get rid of the cache because standard measures applied to make Lucene
fast will work on this.

On Fri, Jul 10, 2009 at 5:34 AM, Sean Owen <srowen@gmail.com> wrote:

> Also, it sounds like you are trying to do real-time recommendations,
> like synchronously with a user request. This can be hard since it
> imposes such a tight time limit. Consider doing recommendations
> asynchronously if you can. For example, start computing
> recommendations when the user logs in, and maybe on the 2nd page view
> 5 seconds later, you are ready to recommend something.
>

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