Relationship Identification for Social Network Discovery Chris Diehl JHU/APL

Galileo Namata and Lise Getoor University of Maryland – College Park

Main Contribution  Task  Identify communication relationships exhibiting a given social relationship in a communications archive  Main Result  Defined and evaluated a supervised ranking approach for relationship identification  Primary Lesson Learned  Simple relationship representations go a long way!

To: [email protected] From: [email protected] Subject: Re: trade My friend John says ….

Tools and Techniques Labeled Ego Networks

Large-Margin Egocentric Relationship Ranking

Relationship Ranking

Message Ranking

Training

To: [email protected] From: [email protected] Subject: Re: trade

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Analysis

I need your input on…

Evaluation Enron Manager-Subordinate Relations Organizational Ground Truth January 2000 – November 2001

Relationship Ranking Approach

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ContentBased with Attribute Selection ContentBased Traffic-Based

Mean Reciprocal Rank

Random Selection Worst Case

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Evaluation Enron Manager-Subordinate Relations From: [email protected] To: [email protected], [email protected] Subject: Off-Site Travel Question The e-mail that was sent out many weeks ago about the off-site indicated that it would run from Wednesday night to Saturday AM. It is now running Thursday until Sunday… I had already made arraingements to attend a wedding in Oregon on Saturday night. It is a good friend of mine and my wife's… While I have authority to place millions of dollars of the company's money at risk, I don't feel comfortable signing up for a $7,000 extra flight without talking to you guys… Any thoughts would be greatly appreciated.

Evaluation Enron Manager-Subordinate Relations From: [email protected] To: [email protected], [email protected] Subject: Happiness Happiness is looking at the new legal org chart (which Jan just now dropped on my desk). I always approach these dry documents as though they were trigrams resulting from throwing the coins and consulting the I-Ching. At the top of the trigram which I find myself listed in I see a single name: Elizabeth Sager, and at the bottom I see the name Genia FitzGerald. ... cgy

Implications of Work  Event-Based Retrospective Analysis  “What happened?”  Goals  Understand Org. Structure  Associate Org. Actions with Events  Interactive relationship identification key  A number of learning challenges remain

Points for Discussion  Personal Email Management vs. Retrospective Analysis in Email Archives  What challenges do they share in common?  Tracking Context  Associating Emails with Contextual Dimensions  What aspects are distinct?  Scale  Observability  Available Context

 Process Design and Evaluation  Integration of HCI, Algorithms, Visualization  Strategies for evaluating process utility?

Chris Diehl

in a communications archive. ▫ Main Result ... The e-mail that was sent out many weeks ago about the off-site ... which I find myself listed in I see a single name:.
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