Robin Cohen Coralee Allaby Christian Cumbaa Mark Fitzgerald Kinson Ho Bowen Hui Celine Latulipe Fletcher Lu Nancy Moussa David Pooley Alex Qian Saheem Siddiqi What is Initiative? 171-214 1998 8 User Model. User-Adapt. Interact. 3-4 http://dx.doi.org/10.1023/A:1008345804895 db/journals/umuai/umuai8.html#CohenACFHHLLMPQS98