= About Skipforward = Skipforward is a distributed recommendation system using a lightweight ontology approach for formalizing opinions about item features. Items can be things such as songs or board games; example item features are the genre of a song or the degree of chance in a board game. Every user of the system is free to add new items and statements about existing items to the system. Naturally, opinions may differ between users---the system even encourages people to express dissent by supporting negation for item features. Skipforward allows discussions for any item feature as well as displaying these discussions in a way similar to web forums. Skipforward uses the [http://www.gnu.org/licenses/agpl-3.0.html GNU Affero General Public License] version 3. = Features = * supports '''ontology-based subjective personalized annotations''' using the ''Skipinions'' ontology * implements '''personalized views''' using weighted aggregation of multiple statements concerning one item and feature type * competence metric works per feature type and is based on modified Pearson correlation * '''recommender functionality''' for... * similar items (based on their annotations) * items matching a predefined annotation profile * item annotations (recommending feature types highly relevant for the item recommender but not yet present for the current item) * experts (users with high correlation concerning one feature type) * '''explanations''' available for recommendations * personalized '''RSS newsfeeds''' * all information available as '''Linked Open Data''', too * '''distributed design''' based on full replication using [http://xmpp.org/ XMPP] * integrated with '''[wiki:DBTropes DBTropes]''' = Starting Points = * '''[http://skipforward.net/skipforward/ Demo installation]''' - "Login as demo user" logs you in read-only. * GettingStarted - how to log in and set up the system using an own XMPP account. * '''DBTropes demo installation''' ''(offline)'' - featuring ''all'' of the DBTropes data. [http://lists.w3.org/Archives/Public/public-lod/2013Mar/0091.html Details]. * This is single-user, read-only, some features have been disabled due to the large amount of data, and XMPP connectivity has been disabled. * Screencasts * '''[wiki:UseCaseInterzone Interzone use case]''' - based on revision 573 (2011-09-26) * This illustrates short story annotation and search. * [https://skipforward.opendfki.de/repos/trunk/web/video/index.html (Old) screencast] - based on revision 224 (2008-10-26). * Features not demonstrated here: Trust network and opinion/user similarity metrics, alternative user interface, RSS feeds, improved search. = Development = * [source:trunk/skipforward Browse source] * SVN repository is available at https://skipforward.opendfki.de/repos/trunk/ * [wiki:Ideas Ideas] collection * [wiki:DocumentationForDevelopers Developer documentation] = Contact = * [http://www.dfki.de/~kiesel/ Malte Kiesel] = Publications = * Malte Kiesel, ''Facilitating Collaborative Ontology-Based Annotations in Communities of Interest''. [https://kluedo.ub.uni-kl.de/frontdoor/index/index/docId/3871 Doctoral Thesis], 2014. * Malte Kiesel, Injy Hamed, ''Goal-Oriented Annotation Recommenders''. [http://www.swcs2013.org/ SWCS workshop] at [http://2013.eswc-conferences.org/ ESWC 2013]. * Malte Kiesel, Florian Mittag. ''Personalization in Skipforward, an Ontology-Based Distributed Annotation System''. [http://www.dai-labor.de/spim2011/ SPIM] workshop, [http://iswc2011.semanticweb.org/ ISWC 2011]. [http://www.dfki.uni-kl.de/~kiesel/paper/2011_Skipforward_ISWC_SPIM.pdf Paper]. * Malte Kiesel, Sven Schwarz. ''Skipforward---a Lightweight Ontology-Based Peer-To-Peer Recommendation System''. [http://iswc2008.semanticweb.org/ ISWC 2008] Demonstration. [http://ftp.informatik.rwth-aachen.de/Publications/CEUR-WS/Vol-401 CEUR-WS Volume 401]. [http://www.dfki.de/~kiesel/paper/2008_Skipforward_ISWC_Poster.pdf Poster].