A diary study of mobile information needs

By Timothy Sohn, Kevin A. Li, W. Griswold, James Hollan. International Conference on Human Factors in Computing Systems, 2008

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Freedom to roam: a study of mobile device adoption and accessibility for people with visual and motor disabilities (2009, background): “[25] conducted a study in which participants used text messages to record information needed while on the go, finding that participants’ information needs were strongly influenced by their location and activity.”
A Contextual-Bandit Algorithm for Mobile Context-Aware Recommender System (2012, background): “This problem has been addressed in recent research in the Mobile Context-Aware Recommender Systems (MCRS) area [2, 4, 5, 14].”
Visual challenges in the everyday lives of blind people (2013, background): “Another diary study conducted in 2008 indicated that when a user is outside of their home, the number of information needs that are contextual information needs - based on the user’s current activity, their location, the time, or a conversation they were involved in - was 72% [28].”
Diversity in smartphone usage (2010, background): “Unlike previous attempts to understand mobile application usage [5, 19, 26] that use diaries and interviews, we rely on the mobile phone’s OS to report application usage.”