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NicolasHug / Surprise

A Python scikit for building and analyzing recommender systems
http://surpriselib.com
BSD 3-Clause "New" or "Revised" License
6.32k stars 1.01k forks source link

Accuracy behavior is strange #54

Closed paulocoutinhox closed 7 years ago

paulocoutinhox commented 7 years ago

Hi,

With my simple test, the accuracy behavior is very strange:

DATASET [user, item, rating]:

100 1   1
100 2   1
100 3   1
100 4   1
100 5   1
200 1   1
200 2   1
200 3   1
200 6   1

PRECISION IN 10x EXECUTIONS:

0.00771723811595
0.0278066509315
0.0170203594873
0.111386411745
0.103972524222
0.0
0.0134623913693
0.0974465112307
0.0574640800362
0.0122466495424

Why the precision change between 0 to 97% on every execution?

NicolasHug commented 7 years ago

I don't know.

Closing the issue. (For reference, if anyone thinks I'm overreacting: #40 #51 #53)