On Wed, Dec 5, 2012 at 5:29 PM, Koobas <koo...@gmail.com> wrote: > ... > Now yet another naive question. > Ted is probably going to go ballistic ;) >
I hope not. > Assuming that simple overlap methods suck, > is there still a metric that works better than others > (i.e. Tanimoto vs. Jaccard vs something else)? > LLR works well on usage data. The idea here is you use a robust test for anomalous cooccurrence between pairs of items. If you find an anomaly, you record a 1 for that pair in the item-item matrix. Otherwise, record a 0.
