Yes. One gotcha is that you generally have to limit document size a bit to get good performance. This is not a big deal because document normalization makes it hard for these documents to be retrieved in any case. Also, these are typically not good second order recommendations. First order recommendations are the top-40 kinds of things and make poor recommendations for a bunch of reasons. Second order recommendations are those that are based on your history. They make much better recommendations.
On Fri, Jul 10, 2009 at 3:50 PM, Jason Rutherglen < [email protected]> wrote: > Interesting. So we're creating the item-item matrix using one of the Mahout > algorithms (like Taste?), then dumping it into Lucene. >
