The Recommender Challenge HackathonTorben Brodtplista GmbH2013/04/24

What is plista

● recommendation● advertising● network

● many big publishers in DE, AT, CH, ..● "other articles you might be interested.."● >8 billion impressions, clicks, engages, .. pM

Architecture

Architecture

Tracking Success

● each time a recommender is chosen, plista will track its success.. for context and context combinations

???

Tracking Success

● "online evaluation" technology● better than classical offline evaluation known

from papers?● cooperation with TU Berlin, aided by state

???

The hackathon

● we open the data, you provide the knowledge

● develop a recommender which implements the http + json api

● plista will track the success, if you are smart, be the winner for the the best recommender

● best is live, best is scalable and best will work in industry

The hackathon

● many interesting people● get to know developers using

○ PHP, Java, NodeJS, Python○ Redis, Storm, Elastic Search○ Apache Mahout, Lucene○ ...

The hackathon

● http://contest.plista.com/bigdataweek2013○ 4pm start○ 6pm "hello world!"○ 7pm pizza + mate○ ... open end fun

How to start (1/3)

register atcontest.plista.com

select challenge* bdw13* weekly

How to start (2/3)

● start implementation using examples● http://contest.plista.com/wiki/example

How to start (2/3)

● start implementation using examples● http://contest.plista.com/wiki/example

● have a github account?● "fork" one of the example projects● work on your local "clone"● upload to your server● enter url in your contest account

How to start (3/3)

● need a virtual server? ask us● need old data? start replay from

webinterface● try sending debug events from webinterface● wait for team activation● plista starts sending you real data● your responses are displayed on real

publishers

Recommender ideas

● concentrate on implicit feedback● think streaming / incremental

○ better to scale○ faster results, new articles are better than old

articles?● think about cross domain

○ contest is not allowed to mix items from different domains/publishers

○ want knowledge of the full data, but candidate items of a slice

Summary

join us?http://www.plista.com/career

stay in touch?Torben Brodt, plista.com, google plus, twitter, ..

Discounts

30% discount code: PLISTA30

● NoSQL Infrastructure● Killing pigs and saving Danish bacon with Riak● Introduction to Graph Databases● Yokozuna, combining Solr with Riak● Why you should care about Big Data● ...

And Lottery... ● 1 FREE TICKET

And more Torben● Talk about Realtime Recommendations

Hint

● now watch out for teammates

and have fun!