iletken @ strands $100k call for recommender start-ups - recsys08

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Personally Relevant Content Based On Social Connections

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Page 1: Iletken @ Strands $100K Call for Recommender Start-Ups - RecSys08

Personally Relevant Content

Based On Social Connections

Page 2: Iletken @ Strands $100K Call for Recommender Start-Ups - RecSys08

Team

• M. Deniz OKTAR, BSc @ Koc University, Istanbul• Firat GELBAL, MSc @ TU/e, Eindhoven• Baris Can DAYLIK, BSc @ Koc University, Istanbul• Selcuk ATLI, MSc @ RPI, New York

Board of Advisors:• Prof. James Hendler, Professor in Computer Science @ RPI, TWC• Dr. Tarcan Kumkale, Assist. Prof. in Psychology @ Koc• Dr. Oznur Ozkasap, Assist. Prof. in Computer Science @ Koc

Page 3: Iletken @ Strands $100K Call for Recommender Start-Ups - RecSys08

Problems

• No psychological or social aspect• Rapidly emerging online media content like

news feeds need special engine• Computation time• New user issue• Critical mass problem• Overspecialization• Explicit feedback

Page 4: Iletken @ Strands $100K Call for Recommender Start-Ups - RecSys08

Value Proposition

• Wisdom of the Crowd vs. Circle of Trust• Social added value• 3-layered Hybrid Engine• Weighted social proximity graphs• Multiple social graphs for different interests• Implicit/explicit feedback

14 C

It rains heavilyin Eindhoven.

Firat says:

It rains heavilyin Eindhoven.vs

Page 5: Iletken @ Strands $100K Call for Recommender Start-Ups - RecSys08

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Individual Interests

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+Politics

Technology

Music

Sports

Relevance = α Content +∙ β CF + ∙ θ ∙ SocialRelevance = α Content ∙ + β CF + ∙ θ ∙ Social

Page 6: Iletken @ Strands $100K Call for Recommender Start-Ups - RecSys08

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Network Interests

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+

Relevance = α Content ∙ + β CF + ∙ θ ∙ SocialRelevance = α Content +∙ β CF ∙ + θ ∙ Social

Page 7: Iletken @ Strands $100K Call for Recommender Start-Ups - RecSys08

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Circle of Trust Interests

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Relevance = α Content +∙ β CF ∙ + θ ∙ SocialRelevance = α Content +∙ β CF +∙ θ ∙ Social

Page 8: Iletken @ Strands $100K Call for Recommender Start-Ups - RecSys08

+

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Interests’ Reconfiguration

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+++

Relevance = α Content +∙ β CF + ∙ θ ∙ Social

Page 9: Iletken @ Strands $100K Call for Recommender Start-Ups - RecSys08

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Interests’ Reconfiguration

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Sports Proximity

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Page 10: Iletken @ Strands $100K Call for Recommender Start-Ups - RecSys08

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Interests’ Reconfiguration

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Politics Proximity

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Page 11: Iletken @ Strands $100K Call for Recommender Start-Ups - RecSys08

Smarter Social Ads

Social Advertising: “If your friends have it, then you will have it”

•People are influenced by their friends

•iletken captures people that most influence their friends

•Opinion leaders are easy to find

Page 12: Iletken @ Strands $100K Call for Recommender Start-Ups - RecSys08

Thanks

•Focus on developing the recommendation system.•Add value to your social network.

For more information: www.iletken-project.com

Page 13: Iletken @ Strands $100K Call for Recommender Start-Ups - RecSys08

Questions?

• New User/Critical Mass Poblem• Social Capital• Importance of Trust• Why Different• Chinese Song Problem• Social Noise

Thanks

Page 14: Iletken @ Strands $100K Call for Recommender Start-Ups - RecSys08

Critical Mass ProblemBACK

Solution: Hybrid Engine

Page 15: Iletken @ Strands $100K Call for Recommender Start-Ups - RecSys08

Trust is ValueBACK

Page 16: Iletken @ Strands $100K Call for Recommender Start-Ups - RecSys08

Social CapitalBACK

Page 17: Iletken @ Strands $100K Call for Recommender Start-Ups - RecSys08

Why Different

• Social Added Value

• Live Social Graphs

BACK

14 C

It rains heavilyin Eindhoven.

Firat says:

It rains heavilyin Eindhoven.vs

live updates on social graphs

Page 18: Iletken @ Strands $100K Call for Recommender Start-Ups - RecSys08

Chinese Song ProblemBACK

Time

Songs of American User Relevance Songs of Chinese User

Radiohead – Paranoid Android +++ Coldplay – X&Y

Oasis – Wonderwall ++ Blur – Coffee and TV

Greenday – Good Riddance +++ Foo Fighters – Big Me

... ...

Franz Ferdiand – Take me Out

Page 19: Iletken @ Strands $100K Call for Recommender Start-Ups - RecSys08

Social Noise

• Iletken uses Social Noise instead of Random

BACK

Noise = Random(t);vs

Noise = Social Capital