Woogle is an extension for MediaWiki that aims to guide and motivate contributions. It does this by showing what content is missing from a wiki based on search logs, and making it easier for readers to become contributors. Woogle improves the native MediaWiki search and allows searching across multiple wikis. It provides features like red link popups that suggest synonyms, tracking popular search queries, and social search capabilities that allow adding or ranking query results.

1. Woogle4MediaWiki An Extension to Improve Search and to Guide Contributions Hans-Jörg Happel, FZI Karlsruhe, Germany Denny Vrandečić , Karlsruhe Institute of Technology, Germany 2010-08-05 @ Wikimania 2011; Haifa, Israel

2. Basic facts Woogle is an extension for MediaWiki Goal: Guide and motivate contributions Show people what is „missing“ in the Wiki Especially in smaller/enterprise Wikis Sub-Goal: improve search in MediaWiki Woogle4MediaWiki - Wikimania 2011; Haifa, Israel

3. Contribution in Wikis Wikis are great in enabling contributions Everybody may contribute But: Wikis are poor in guiding & motivating contributions „ Why should I contribute?“ „ Where should I put it?“ „ What can I contribute anyway?“ Woogle4MediaWiki - Wikimania 2011; Haifa, Israel

4. What to contribute to a Wiki? „ Red links“ Great innovation : „Dead“ links that help to express a demand rather than a (404) error But: „Red links“ do not tell how much information is sought What to fill first, if there are plenty of red links?  Special:WantedPages is useless on most Wikimedia Wikis Woogle4MediaWiki - Wikimania 2011; Haifa, Israel

5. How to improve contributions to a Wiki? Assumptions Wiki authors are motivated by the audience (readers) Readers can hardly influence content creation (Some of) readers needs are expressed by searching Woogle core ideas Use search logs to guide contributions Make it easier for readers/searchers to contributors Woogle4MediaWiki - Wikimania 2011; Haifa, Israel

6. Woogle Feature: Red Link Popups (I) Plain MediaWiki Red Link Normal display Mouse-over display Woogle Red Link Normal display Mouse-over display Woogle4MediaWiki - Wikimania 2011; Haifa, Israel

7. Woogle Feature: Red Link Popups (II) Lesson learned Many red links denote synonyms (abbreviations, misspellings) of existing pages – at least in smaller Wikis New feature/extension „ Redirector“ – create a one-click #REDIRECT based on suggestions Woogle4MediaWiki - Wikimania 2011; Haifa, Israel Under development Help appreciated!

8. Woogle Feature: Search (I) Woogle replaces MediaWiki built-in search or can act as an additional/parallel search engine (user-configurable!) Small features Search suggestions based on fulltext Allows to index Wikitext or rendered text Allows to index certain files (e.g., PDF) Show previous search attempts based on query log Social search (Wiki-page per query, social ranking) Two setups WoogleNative : Native PHP; based on Zend Lucene Search For small Wikis – does not scale that good for Wikis >100.000 pages WoogleRemote : Connect to Java-based search backend Scales well Allows to search multiple Wikis and many other systems (e.g., SVN, JIRA, Bugzilla, …) at once Woogle4MediaWiki - Wikimania 2011; Haifa, Israel

9. Woogle4MediaWiki - Wikimania 2011; Haifa, Israel http://localhost/wiki/Woogle:Woogle4MediaWiki  Each query can be a Wiki page Allows for Wiki-Text on top of results („Social Did-You-Mean“) Discussion page for query Watches based on keywords Shows basic statistics about query „ How many people searched for that?“

10. Woogle Feature: Search (III) Social search Add, remove and re-rank query results Add comments Woogle4MediaWiki - Wikimania 2011; Haifa, Israel Under development Help appreciated!

11. Woogle Feature: Even more… Query log statistics Popular queries Popular results Preferences might be defined globally or by each individual user (e.g., Woogle can be enabled by individual users) Instrumentation framework Logs certain kinds of user interactions Experimental groups with randomized user assignment Customize system and override configuration for groups Informed consent (user acceptance dialog)  Useful for UI research and A/B testing Woogle4MediaWiki - Wikimania 2011; Haifa, Israel

12. Further related tools to guide contributions Woogle4MediaWiki - Wikimania 2011; Haifa, Israel MediaWiki Semantic MediaWiki MediaWiki extension External tool (via API) Intopedia (intopedia.org) Extension: Woogle4MediaWiki Extension: SemanticNeed

13. Summary Woogle is an extension to improve search & content contribution in Wikis Info & Download http://www.mediawiki.org/wiki/Extension:Woogle4MediaWiki Online-Demo http://amazonas.fzi.de/wooglenative/ What‘s in for Wikimedia projects? May help bootstrapping smaller Wikis (small language Wikipedias Wikimedia projects) Woogle allows to search across multiple MediaWikis at once Woogle4MediaWiki - Wikimania 2011; Haifa, Israel

14. BACKUP SLIDES Woogle4MediaWiki - Wikimania 2011; Haifa, Israel

15. Demand guidance Woogle uses queries and further metadata to qualify desired content Users are informed how strong the information need is, and in which context it arises Woogle4MediaWiki - Wikimania 2011; Haifa, Israel

16. Two flavours of Woogle Native PHP (using Zend Lucene Search) Can handle Wikis up to 50.000 pages (Wikipedia size) and serves normal queries in >1 sec Accesses Java (Lucene) backend via Webservices Supports searching additional sources (e.g. Ticket systems, SVN, other Wiki engines) Woogle4MediaWiki - Wikimania 2011; Haifa, Israel

17. Collaborative description of the information need Notifications concerning search activities Discussion page Directly create new knowledge from the search dialog Search has a URI and can be linked from within the Wiki (one page per search term) Search across different data sources/types (WoogleRemote) Additional clues with meta-information about a need http://localhost/wiki/Woogle:Woogle4MediaWiki Woogle4MediaWiki - Wikimania 2011; Haifa, Israel

18. Statistics Woogle4MediaWiki - Wikimania 2011; Haifa, Israel

19. Woogle Configuration Woogle4MediaWiki - Wikimania 2011; Haifa, Israel

20. Implementation Trivia Search UI Completely intercepts MW search process – indenpendent of MW search interfaces Red Links Realized via JavaScript/jQuery (parses red links, retrieves needs from backend batch-wise) to avoid patching MW Very basic implementation of access rights (via MediaWiki groups) Instrumentation addon Allows to re-configure most system features based on user groups Provides evaluation participation dialog Logs various user behaviour data Woogle4MediaWiki - Wikimania 2011; Haifa, Israel