Simple Result Interpretation Question

2012-09-06 Thread Thomas, Sebastien
Hi community, I am new to mahout and I am looking for some hint. I am running the itemsimilarity, I have about 8 million users and 32 items. My output file (with the format: item1, item2, similarity) is basically telling me that all my items are similar (if my interpretation is right). For

RE: Simple Result Interpretation Question

2012-09-06 Thread Thomas, Sebastien
always been a bit artificial. On Thu, Sep 6, 2012 at 4:13 PM, Thomas, Sebastien sebastien.tho...@disney.com wrote: Hi community, I am new to mahout and I am looking for some hint. I am running the itemsimilarity, I have about 8 million users and 32 items. My output file (with the format

RE: Simple Result Interpretation Question

2012-09-06 Thread Thomas, Sebastien
on your data. None of these values are wrong or surprising per se. On Thu, Sep 6, 2012 at 4:54 PM, Thomas, Sebastien sebastien.tho...@disney.com wrote: Thanks for your reply! But all the others give me pretty similar results. Pearson: -0.14similariry0.12 Uncentered_cosine: 0.79similarity0.85