[PragmaticWeb] Call for Papers: Rule-based Recommender Systems Challenge (RecSysRules 2015)

[Adrian Paschke]

** apologies for cross-posting **

==== Call for Papers: Rule-based Recommender Systems Challenge ====

A challenge of RuleML 2015, 2-5 August 2015 Berlin 
URL:  http://2015.ruleml.org/recsysrules-2015.html

co-located with:

- The 11th Reasoning Web Summer School (RW 2015), July 31 - August 4, 2015
  http://reasoningweb.org/2015
- 9th International Conference on Web Reasoning and Rule Systems (RR 2015),
August 4-6, 2015
  http://www.rr-conference.org/RR2015
- 25th International Conference on Automated Deduction (CADE-25), August
1-7, 2015
  http://www.cade-25.info/
- 7th Workshop on Formal Ontologies meet Industry (FOMI 2015), August 5th
  http://www.csw.inf.fu-berlin.de/fomi2015/

This challenge has two focus areas:

    * rule learning algorithms applied on recommender problems
    * using the linked open data cloud for feature set extension

The challenge uses a semantically enriched version of the MovieLens dataset.

In addition to the standard metrics of recommender performance, the
challenge aims to assess the understandability of the rule set  generated by
the participating rule-based systems.


== Task ==
The participating systems are requested to find and recommend a limited set
of 5 items that best match a user profile. 

* The participants will be provided with a semantically enriched version of
the MovieLens dataset.
* It is mandatory that a participating solution either uses the linked open
data cloud to further extend the feature set or is a rule-based classifier.
Both options simultaneously are preferred.
* A scorer is provided by the organizers so that the participants can check
their progress.
* Challenge submission will consist of the set of additional recommendations
(top-5 movies) for each user from the train dataset and a file containing
the rules that lead to the prediction (rule based classifiers only, PMML
RuleSet model preferred but not required).

== Judging and Prizes ==
Four prizes, totalling to 500 USD, will be given:
* best recommender performance will be given to the paper with the highest
score in the evaluation (main prize)
* most understandable ruleset (only rule-based submissions eligible)
* best aggregate diversity
* most original approach, selected by the Challenge Program Committee with
the reviewing process 

== Proceedings ==
Rule Challenge 2015 proceedings will be published as CEUR Proceedings and
indexed by SCOPUS.

== Important dates ==

* Paper and result submission: May 23, 2015
* Author Notification: June 6, 2015
* Challenge: 2-5 Aug, 2015

== Organisers ==
* Jaroslav Kucha? (Czech Technical University, Prague)
* Tommaso di Noia (Politecnico di Bari, Italy)
* Heiko Paulheim (University Mannheim, Germany)
* Tomáš Kliegr (University of Economics, Prague)

-------------------------------
The annual International Web Rule Symposium (RuleML) is an international
conference on research, applications, languages and standards for rule
technologies. RuleML is the leading conference to build bridges between
academia and industry in the field of rules and its applications, especially
as part of the semantic technology stack.
Conference URL: http://2015.ruleml.org
Conference hashtag: #RuleML2015
Organization Website: http://www.ruleml.org
RuleML Blog & Social Mediazine: http://blog.ruleml.org