Interlinking semantics, web2.0, and the real-world

Interlinking semantics, web2.0, and the real-world
HarithAlani
Knowledge Media institute, OU
APRESW Workshop, Extended Semantic Web Conference, Crete, 2010

Learning about YOU!
Sites learn about what you like from your browsing/purchasing history
Cold start problem
New user
New site
New product, product range
Sparse knowledge
Limited to interactions within the site
Can’t learn if you are using other sites
No to Spyware!
Tools that sit inside computers and monitor browsing behaviour and content
Much research went into that direction for building RSs
Pain to control what they should/shouldn’t access and when
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New info sources for recommendation systems
Micro publishing
blogging
tweeting
updating status
messaging
Posting
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publishing
Sharing
wish for others to see what we publish
know which groups we are in
what we like
where we’re going
networking
sharing
Online networking
Becoming part of an online community
Connecting with friends, colleagues, family
Participating in groups and discussions

Can you tell what my interests are?
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Facebook’s Open Graph
Collects “like” information from anywhere about anything!
“Based on the structured data you provide via the Open Graph protocol, your pages show up richly across Facebook: in user profiles, within search results and in News Feed.”
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Personal interests and the social web
WHAT YOU LIKE
WHOM YOU KNOW
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What about the semantics?
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Un-Semantic Recommender Systems
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Collaborative filtering is scalable, relatively cheap, and requires little background knowledge
But can semantics help improve recommendation accuracy? Could it be cost effective?

Semantics from Linked Open Data Cloud
2007
millions of objects
Billions of triples
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DBpedia – a Linked Data hub
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Status: No Relation found

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Social content
Recommender Systems
Social networks
Semantic web
YES … BUT!!

Challenges
Tag ambiguity, misspellings, redundancy
No semantic structure
Distributed and disintegrated personal tag clouds
Disconnected social network islands
Limited accessibility to data on SNSs
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publishing
networking
sharing
Live Social Semantics platform aims at solving these problems!

Social+Semantics+RFID: Live Social Semantics
Integration of physical presence and online information
Semantic user profile generation
Interest identification from distributed tagging activities
Large-scale, real-world social gatherings
Logging of face-to-face contact
Social network browsing
On-site and post-event support for social networking
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Making Sense of Folksonomies
Semantic User Profiles
FOAF
DBpedia + Wordnet
Identity Integration
Tag Integration
Delicious
Last.fm
Flickr
Facebook
…

Live Social Semantics: architecture
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From social to semantics
Cleaning up the tag
Associating tags with semantics
Integrating tagging information
Collecting and merging social networks
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Cleaning up the tag
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Tag Filtering Service
Semantic modeling
Semantic analysis
Collective intelligence
Statistical analysis
Syntactical analysis

Tag Filtering Service
http://tagora.ecs.soton.ac.uk/tsr/tag_filtering.html

Cleaning up the tag
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From Tags to Semantics
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Tag Disambiguation
Term vector similarity
Term vector from tag co-occurrence
Term vector for each suggested Dbpedia disambiguation page
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apple, film, 1980, ..
apple, inc, computer, ..
apple, iphone, computer, ..
apple, tree, fruit, ..

Tags to User Interests
Based on 72 POIs verified by users
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Cleaning up the tag
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Connecting it all
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Tag structuring
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Cleaning up the tag
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Merging social networks
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From raw tags and social relations to Linked Data
Collective intelligence
User raw data
Semantic data
Linked data
ontologies

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SocioPatterns platform: motivation
fundamental knowledge on human contact
epidemiological relevance for airborne pathogens
communication in mobile scenarios
organizational investigation
ubiquitous social networking
augmented (social) reality
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Convergence with online social networks
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leverage social context

SocioPatternsRFIDs and data collection
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35

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http://www.vimeo.com/6590604

web-based user-centered interface
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Deployed at:
Live Social Semantics

Statistics
ESWC 2009
attended by over 300 people
187 collected an RFID
139 created accounts on LSS site
HyperText 2009
attended by around 150 people
113 collected an RFID
97 registered on LSS site
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Survey of users who didn’t provide LSS with any SNS accounts
84 registered with no SNS accounts
36 responded to our survey
Some used LinkedIn or xing
This survey does not include conf attendees who did not participate in LSS
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Recommendation Services for LSS
Recommending talks and sessions
If speakers are in your online social network
If speakers are in your community of practice network
If you have met the speakers during the conference or in past events
Recommending people for your online social network
If you spent time talking to someone not in your online social network
If you met someone who is influential, active
If you have strong indirect connections to a person you met
Recommending people you should meet
If you have strong overlap of interests
If your community of practice is very similar
If you have an overlapping social network
Recommending popular topics/sessions to organisers
If a talk/session is heavily attended
If a talk/speaker generated much attention
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Acknowledgement
CiroCattuto - ISI Turin
Wouter van Den Broeck - ISI Turin
Martin Szomszor - CeRC, City University, UK
Alain Barrat - CPT Marseille & ISI
GianlucaCorrendo – Uni Southampton, UK
Organizers of ESWC 2009, HT 2009, and ESWC 2010
Users of LSS!
Live Social Semantics references:
Szomszor, M., et al. (2010) Semantics, Sensors, and the Social Web: The Live Social Semantics experiments. Extended Semantic Web Conference (ESWC), Crete.
Broeck, W., et al. (2010) The Live Social Semantics application: a platform for integrating face-to-face presence with on-line social networking, Workshop on Communication, Collaboration and Social Networking in Pervasive Computing Environments (PerCol), IEEE PerCom, Mannheim.
Alani, H., et al. (2009) Live Social Semantics. In: 8th International Semantic Web Conference (ISWC, US.
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THANKS!
please consider participating in LSS
http://tagora.ecs.soton.ac.uk
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Interlinking semantics, web2.0, and the real-world

by Knowledge Media Institute on Jun 14, 2010

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Interlinking semantics, web2.0, and the real-world Presentation Transcript