Finding more people like you

Slide 1: Findinge people like mor you! Comparing similarities between people in a vertical social network Arun Vijayan C. Stral LLC.

Slide 2: Social Networks • People network for – Trade • Articles • Respect • Ideology – Find Partners (Instinct) People use social networks to find sex – Marc Canter, CEO, People Aggregator; Co-founder, Macromedia.

Slide 3: User stickiness in a Social Network

Slide 4: How to find more people like you?

Slide 5: Consider Movie based Social Network • People can rate movies • 1 – 5 scale

Slide 6:  We have Loads of People     

Slide 7: Rearrange People based on Interests and features    A B C D

Slide 8: Euclidean Distance Score distance • It is a simple method to calculate between two points in space. • Single dimension (x) • 2D (x,y) (x2, y2, z2) • 3D (x,y,z) (x1, y1, z1)

Slide 9: Mark the points first (x2, y2, z2) d (x1, y1, z1)

Slide 10: Euclidean Distance Formula Dis ta n c e , d = √(x2-x1 )2 + (y2-y1 )2 +(z2-z1)2 (x2, y2, z2) d (x1, y1, z1)

Slide 11: Wait a minute! how geometry and actual People in a web app are related?

Slide 12: Ratings Shivaji TZP User 1.5 4 John 4.5 1.5 Ravi 1 3.5 Kiran 3 5 Deepti

Slide 13: How to calculate? Dis ta n c e , d = √(x2-x1 )2 + (y2-y1 )2 D(John, Ravi) = √(1.5-4.5 )2 + (4-1.5 )2 = √(3 )2 + (2.5 )2 = 3.91

Slide 14: Distance comparison user user distance Shivaji TZP User john Ravi 3.91 ====================== 1.5 4 John John Kiran 0.70 === 4.5 1.5 Ravi John Deepti 1.80 ======= 1 3.5 Kiran Ravi Kiran 4.03 ============================== 3 5 Deepti Ravi Deepti 3.81 =================== Kiran Deepti 2.5 ==============

Slide 15: That’s it!

Slide 16: Inspirationz • Joshua Porter – Bokardo.com • Toby Segaran – Programming Collective Intelligence • MarcRocksCanter • Duncan Watts – Six Degrees of Separation • Flickr CC Attribution Photos • and You.