Hi Sean,
you are right. I used the Pearson Similarity which can not work without
ratings.
Thank you for your advice.
Bye,
Oliver
Am 30.05.2012 00:42, schrieb Sean Owen:
Oops, you said that. What are your input rows like?
What similarity metric -- one that doesn't need ratings?
On Tue, May 29, 2012 at 11:30 PM, Oliver B. Fischer
<[email protected]>wrote:
Yes, I tried --booleanData and --booleanData true. The result was the same.
Prior that I tried the Wikipedia link database (I converted the original
dataset in the required format in a separate step before) with the same
result. Even with a fixed preference value of 1.0 the result file was
empty. Then I tried a random preference value between 1.0 and 5.0 and got
results.
