predictionio-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Pat Ferrel <...@occamsmachete.com>
Subject Re: LLR and other similarity metrics graph in The Universal Recommender with CCO slide
Date Thu, 04 May 2017 16:03:27 GMT
That was generated using the old Mahout Mapreduce recommenders, which had pluggable similarity
metrics. I ran it on a vey large E-Commerce dataset from a real ecom site. The data was for
6 months of sales. We did cross-validation of an 80 training set and 20% held out probe/test
set. The test set was 20% of the most recent sales. We then measure MAP@k for several k. A
decline in MAP@k as K increases means the ranking of items is correct. This higher MAP@k the
better the precision of recommendations.

Using cross-validation between different algorithms is highly suspect so this was using an
identical algo, but not one I’d use today.


On May 4, 2017, at 8:54 AM, Marius Rabenarivo <mariusrabenarivo@gmail.com> wrote:

Hello,

Can you point me to some resource explaining how the graphic comparing
LLR with other similarity metrics was generated?

https://docs.google.com/presentation/d/1MzIGFsATNeAYnLfoR6797ofcLeFRKSX7KB8GAYNtNPY/edit#slide=id.g15e36a57f5_0_119
<https://docs.google.com/presentation/d/1MzIGFsATNeAYnLfoR6797ofcLeFRKSX7KB8GAYNtNPY/edit#slide=id.g15e36a57f5_0_119>

Regards,

Marius

-- 
You received this message because you are subscribed to the Google Groups "actionml-user"
group.
To unsubscribe from this group and stop receiving emails from it, send an email to actionml-user+unsubscribe@googlegroups.com
<mailto:actionml-user+unsubscribe@googlegroups.com>.
To post to this group, send email to actionml-user@googlegroups.com <mailto:actionml-user@googlegroups.com>.
To view this discussion on the web visit https://groups.google.com/d/msgid/actionml-user/CAC-ATVHLVZQGAgYhXdRKBTWs7ABqSsaOdYvE4o0dN5tPH1kF%2BA%40mail.gmail.com
<https://groups.google.com/d/msgid/actionml-user/CAC-ATVHLVZQGAgYhXdRKBTWs7ABqSsaOdYvE4o0dN5tPH1kF%2BA%40mail.gmail.com?utm_medium=email&utm_source=footer>.
For more options, visit https://groups.google.com/d/optout <https://groups.google.com/d/optout>.


Mime
View raw message