Cover -- Contents -- Acknowledgments -- Chapter 1: Digital Writing-What is the Big Deal? -- Chapter 2: Professional Communication Online -- Chapter 3: How (Not) to Use Keystrokes -- Chapter 4: Arenas of Digital Writing -- Chapter 5: Writing E-mail Messages -- Chapter 6: Chat and Instant...

Online ratings play an important role in many markets. However, how fast they can reveal seller types remains unclear. To study this question, we propose a new model in which a buyer learns about the seller’s type from previous ratings and her own experience and rates the seller if she learns...

Problem Definition: Content promotion policies are playing an increasingly important role in improving content consumption and user engagement for online content platforms. However, a frequently used promotion policy generally neglects employing the diffusion effect within a crowd of users. In...