Semantic Wikis - Social Semantic Web in Action
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Semantic WikisSemantic WikisSocial Semantic Web In Action
2011-03-25Specially Prepared for Tsinghua University Alumniin greater Seattle area for centennial celebration
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About Me: Jesse Wang 王嘉欣About Me: Jesse Wang 王嘉欣
1996
1997
2005
1988 1998
1993
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Who is VulcanWho is Vulcan
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What does Vulcan doWhat does Vulcan do
Vulcan Inc. was established in 1986 by investor and philanthropist Paul G. Allen, co-founder of Microsoft, to manage his
business and philanthropic efforts. Allen is chairman of Vulcan and his sister, Jody
Allen, is president and CEO.
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It all began with a vision…It all began with a vision…
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Now the Vision Continues as Project HaloNow the Vision Continues as Project Halo
Project Halo is a staged, long-range research effort by Vulcan Inc. towards the development of a "Digital Aristotle"—a reasoning system capable of answering novel questions and solving advanced problems in a broad range of scientific
disciplines and related human affairs. The project focuses on creating two primary functions: a tutor capable of instructing and assessing students in those
subjects, and a research assistant with broad, interdisciplinary skills to help scientists and others in their work.
Automatic Question Answering System
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Project Halo’s Focus AreasProject Halo’s Focus Areas
• Automated User-Centered Reasoning and Acquisition System
• Text book you can talk to
AURA
• Semantic Inference with Large Knowledge-base
• Non-monotonic rule system / RIF
SILK
• Semantic MediaWiki +• Knowledge authoring with SMEs
SMW+
Plus other related semantic technologies and commercial efforts
Knowledge Acquisition
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Crowdsourcing for Better Knowledge AcquisitionCrowdsourcing for Better Knowledge Acquisition
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Success of WikisSuccess of Wikis
One of human’s greatest inventions
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A Key Feature of WikiA Key Feature of Wiki
Consensus
This distinguishes wikis from other publication tools
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Consensus in Wikis Comes fromConsensus in Wikis Comes from
Collaboration– ~17 edits/page on average in
Wikipedia (with high variance)– Wikipedia’s Neutral Point of View
Convention– Users follow customs and
conventions to engage with articles effectively
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Software Support Makes Wikis SuccessfulSoftware Support Makes Wikis Successful
Trivial to edit by anyone Tracking of all changes, one-
step rollback Every article has a “Talk” page
for discussion Notification facility allows
anyone to “watch” an article Sufficient security on pages,
logins can be required A hierarchy of administrators,
gardeners, and editors Software Bots recognize certain
kinds of vandalism and auto-revert, or recognize articles that need work, and flag them for editors
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Finding Deeper InfoFinding Deeper Info
Wikipedia has articles about…• … all cities with info on their
populations, locations and skyscrapers, etc.… all German cars with engine size, accelerating data…
Can you find: Skyscrapers with 50+ floors and built after 2000 in Shanghai (or Chinese cities with 1,000,000+ people)?
Or German(Porsche) cars that accelerate from 0-100km/h in 5 seconds? 15
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How Wikipedia Answers – List!How Wikipedia Answers – List!
http://en.wikipedia.org/wiki/List_of_fastest_cars_by_acceleration
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Going DeeperGoing Deeper
http://en.wikipedia.org/wiki/List_of_German_cars
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Deeper…Deeper…
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And Deeper…And Deeper…
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And Now…And Now…
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Static List, Tables, …, Not Useable EnoughStatic List, Tables, …, Not Useable Enough
http://en.wikipedia.org/wiki/List_of_lists_about_Oregon
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We need structured data
with clear and consistent
semantics
Semantics Come To RescueSemantics Come To Rescue
To find answers like:• All Porsche vehicles made in Germany
that accelerate from 1-100 km/h less than 4 seconds
• Sci-Fi movies made after year 2000 that cost less than $10M and gross more than $30M
• A map showing where all Mercedes-Benz vehicles are manufactured
• All skyscrapers in China (Japan, Thailand,…) of 50 (40/60/70) floors or more, and built in year 2000 (2001/2002) and after, sorted by built year, floors…, grouped by cities, regions…
• And many more
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What is a Semantic WikiWhat is a Semantic Wiki
A wiki that has an underlying model of the knowledge described in its pages.
To allow users to make their knowledge explicit and formal Semantic Web Compatible
Semantic Wiki
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Two PerspectivesTwo Perspectives
Wikis for Metadata
Metadata for Wikis
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List of Semantic WikisList of Semantic Wikis
AceWikiArtificialMemoryWagn - Ruby on Rails-basedKiWi – Knowledge in a WikiKnoodl – Semantic Collaboration tool and application platformMetaweb - the software that powers FreebaseOntoWikiOpenRecordPhpWiki
Semantic MediaWiki - an extension to MediaWiki that turns it into a semantic wikiSwirrl - a spreadsheet-based semantic wiki applicationTaOPis - has a semantic wiki subsystem based on Frame logicTikiWiki CMS/Groupware integrates Semantic links as a core featurezAgile Wikidsmart - semantically enables Confluence
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Basics of Semantic WikisBasics of Semantic Wikis
Still a wiki, with regular wiki features– Category/Tags, Namespaces, Title, Versioning, ...
Typed Content (built-ins + user created, e.g. categories)– Page/Card, Date, Number, URL/Email, String, …
Typed Links (e.g. properties)– “capital_of”, “contains”, “born_in”…
Querying Interface Support– E.g. “[[Category:Member]] [[Age::<30]]” (in SMW)
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Semantic MediaWiki (SMW) Markup SyntaxSemantic MediaWiki (SMW) Markup Syntax
[[Property::Value | Display]]
Tsinghua is a university located in [[Has location::Beijing]], with
[[Has population::27000|about 27 thousands]] students.
In page "Property:Has location":
[[Has type::Page]]
In page "Property:Has population":
[[Has type::number]]
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Define ClassesDefine Classes
Beijing is a city in [[Has country::China]], with population [[Has population::2,200,000]].
[[Category::Cities]]
Categories are used to define classes because they are better for class inheritance.
The Jin Mao Tower (金茂大厦 ) is an 88-story landmark supertall skyscraper in …
[[Categories: 1998 architecture | Skyscrapers in Shanghai | Hotels in Shanghai | Skyscrapers over 350 meters | Visitor attractions in Shanghai | Landmarks in Shanghai | Skidmore, Owings and Merrill buildings]]
Category:Skyscrapers in China Category: Skyscrapers by country
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Database-style Query over Wiki DataDatabase-style Query over Wiki Data
{{#ask:[[Category:Skyscrapers]][[Located in::China]][[Floor count::>50]][[Year built::<2000]] …
}}
Example: Skyscrapers in China higher than 50 stories, built before
2000
ASK/SPARQL query target
Data via DBpedia
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What is the Promise of Semantic Wikis?What is the Promise of Semantic Wikis?
Semantic Wikis promise Consensus over Data
Combine low-expressivity data authorship with the best features of traditional wikis
User-governed, user-maintained, user-defined
Easy to use as an extension of text authoring
The ultimate data aggregator
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One Key Helpful Feature of Semantic WikisOne Key Helpful Feature of Semantic Wikis
Semantic Wikis are “Schema-Last”Databases require DBAs and schema design;
Semantic Wikis develop and maintain the schema in the wiki
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Semantic MediaWiki CommunitySemantic MediaWiki Community
Open source (GPL) Well documented Active mailing list Commercial support available World-wide community Regular Conferences
– Next SMWCon 4/28-30, 2011 Arlington, VA
http://semantic-mediawiki.org/Very stable SMW core
Mature while still growing, slowly but steadily
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SMW Extensions – Help Build Great ThingsSMW Extensions – Help Build Great Things
• Halo Extensions, Semantic Forms, Semantic Notification, …
Data I/O
• Semantic Toolbar, Semantic Drilldown, Enhanced Retrieval, Search…
Query and Browsing
• Semantic Result Printers, Tree View, Exhibit, Flash charts…
Visualization
• HaloACL, Deployment, Triplestore Connector, Simple Rules…• Semantic WikiTags and Subversion Integration extensions • Upcoming Linked Data Extension, with R2R and SILK from F.U.Berlin
Other useful extensions
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Example: Ultrapedia – Semantic WikipediaExample: Ultrapedia – Semantic Wikipedia
Ultrapedia: An SMW demo built to explore general knowledge acquisition in a wiki
Wikipedia merged with the power of a database Help Readers and Writers Be More Productive
An Analytical Encyclopedia
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Better Views of the Wiki DataBetter Views of the Wiki Data
http://wiking.vulcan.com/up/index.php/Porsche_996
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Dynamic Views of the Acceleration DataDynamic Views of the Acceleration Data
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Graph Views of the Acceleration DataGraph Views of the Acceleration Data
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Dynamic Mapping and ChartingDynamic Mapping and Charting
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Information Discovery via VisualizationInformation Discovery via Visualization
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The InspirationThe Inspiration
We started with a
We could have an
wiki site
web application
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Video: Semantic Wikis for A New ProblemVideo: Semantic Wikis for A New Problem
Social tag-based characterization
Keyword search over tag data
Inconsistent semantics
Easy to engineer
Increasing technical complexity → ← Increasing User Participation
Algorithm-based object characterization
Database-style search
Consistent semantics Extremely difficult to
engineer
Social database-style characterization
Database search + wiki text search
Semantic consistency via wiki mechanisms
Easy to engineer
Semantic Entertainment
Wiki
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Semantic Seahawks Football WikiSemantic Seahawks Football Wiki
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Semantic Entertainment: Query Result Highlight ReelSemantic Entertainment: Query Result Highlight Reel
Commercial Look/Feel
Play-by-play video search
Highlight reel generation
Search on crowd-defined patterns (“touchdowns with big hits”)
Tree-based navigation widget
Very favorable economics
Demo
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Case Study and Demo: Project Management with SMW+Case Study and Demo: Project Management with SMW+
Automatically populate tables
Just the data you want, At the level you want Calendars and
timelines Workflows Personal menus Form-oriented inputs Notifications via
email/RSS MS Office integration SVN integration
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Vulcan Project Management Wiki (Story)Vulcan Project Management Wiki (Story)
Template and style sheet
customizations
Related content
automatically included
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Vulcan Project Management Wiki (Task)Vulcan Project Management Wiki (Task)
Color codes to indicate types
and status
SVN Integration automatically “Completed”
task and relate to repository
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Vulcan Project Management Wiki (Visualizations)Vulcan Project Management Wiki (Visualizations)
Demo
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Screenshot of a Sprint pageScreenshot of a Sprint page
http://wiking.vulcan.com/dev/index.php/Sprint_101020
Data automatically generated via template queries on page
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Requirements for Wiki “Developers”Requirements for Wiki “Developers”
One need not– Write code like a hardcore programmer– Design, setup RDBMS or make frequent
schema changes– Possess knowledge of a senior system
admin Instead one need
– Configure the wiki with desired extensions– Design and evolve the data model
(schema)– Design Content
• Customize templates, forms, styles, skin, etc.
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Conclusions: Semantic MediaWiki is a Powerful ToolConclusions: Semantic MediaWiki is a Powerful Tool
Semantic MediaWiki+ (http://smwforum.ontoprise.com) – Open-source, growing semantic wiki software system– Wiki-style text + semantic markups– Collaborative, user-governed subject models and data curation– Simple and extensible data models with easy import/export
SMW+ has many government and industry users– People built applications with it
Knowledge Management viacrowds can work– A way to leverage and exploit
web-collected data– A lightweight collaborative
knowledge management tool
A new platform for lightweight web application development
KB E
ffort (co
st, p
eople
,…)
KB size (number of assertions, complexity…)
Vulcan
Now
Future
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AcknowledgementAcknowledgement
Paul Allen
Mark Greaves
Karlsruhe Institute of Technology
Tommy Lu
Ontoprise GmbH
William Smith
TeamMersion LLC
Jesse Wang
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Thank you!
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Backups starts here
(End of Slides)
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Case Study: Battle-space Luminary System Case Study: Battle-space Luminary System
Discover when New Information represents a change in understanding of entities– Discovery of explicit entity links, implicit relationships
Large Volumes of Data in various formats– Unstructured news articles– Tactical Reports, Field Intelligence– Structured Database Information
Use Wiki Pages to represent current knowledge about an entity – “what we know” Domain Ontology to represent domain of information – “what we want to know” Issue Alerts when Significant Events occur
– New information according to category– Changing information on topics of interest– Need to send information to various devices – cell phones, email, etc.
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System DesignSystem Design
Wiki Configuration– Semantic MediaWiki: Large developer community, active development, open
source. Wikipedia uses MediaWiki, so scalability and performance are important.
– Semantic Results Format: Provides various rich media displays of semantic information, including graphs, timelines, maps
– Semantic Forms: Provides convenient user interface for entering semantic data into wiki, avoiding cumbersome wikitext
– Semantic Notifications: Enables sending of notifications when results of semantic query change.
Domain Ontology– Created OWL Ontology for Terrorism
Semantic Parsing, Extraction, Reasoning– Java Process using various Open-Source Toolkits– Rapid plugin of new technologies– Multiple Data Sources supported
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Sample Content PageSample Content Page
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Wiki Content DesignWiki Content Design
Use Templates to Ensure Consistent Look-and-Feel– Templates Correspond to Ontology Classes– Fields within Templates correspond to Properties within Ontology– Rich Content Visualizations derived in consistent way
Hierarchical Categories match Class Hierarchy within Ontology– Ensures Validity for Properties– Category included on each Template page to ensure consistency
Forms Provide ability for users to enter data directly into wiki without knowing Wiki Text– Each form corresponds to a Template– Fields within forms correspond to the fields/properties within the Template– GUI can include auto-completion– Created Page immediately linked semantically to rest of Wiki
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Sample VisualizationsSample Visualizations
Visualizations automatically created
w/o user edit(tables, timelines,
maps, social networks…)
UI enables notifications based
on results of query – message sent when
visualization changes
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Wikipedia for Porsches (Acceleration Data Example)Wikipedia for Porsches (Acceleration Data Example)
Information Need: All Porsche models that accelerate 0-100kph in under 5, 6, and 7 seconds
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More Porsche Acceleration Data in WikipediaMore Porsche Acceleration Data in Wikipedia
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Main PageUltrapedia Main PageUltrapedia Main Page
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Tree View Control Abstract/Summary quick preview
Semantics for Improved Wiki NavigationSemantics for Improved Wiki Navigation
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The Porsche 996 Acceleration Table In UltrapediaThe Porsche 996 Acceleration Table In Ultrapedia
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Same Table as a QuerySame Table as a Query
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Which Porsches accelerate fast?Dynamically-Generated Tables for QueriesDynamically-Generated Tables for Queries
Information Need: All Porsche models that accelerate 0-100kph in under 5, 6, and 7 seconds
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Graph Views of the Acceleration DataGraph Views of the Acceleration Data
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External Data via a Live Ebay QueryExternal Data via a Live Ebay Query
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Linking to External Ebay DataLinking to External Ebay Data
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Mercedes-Benz E-class W212 Gallery SectionPhotos in Wiki Articles as DataPhotos in Wiki Articles as Data
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Volkswagen Production Timeline ViewTimelines from DataTimelines from Data
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Dynamic Mapping and ChartingDynamic Mapping and Charting
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Editing Wiki Data In PlaceEditing Wiki Data In Place
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