On Wed, Dec 5, 2012 at 7:03 PM, Ted Dunning <ted.dunn...@gmail.com> wrote:
> 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. > Thanks!
