Correlation between notifications and browsing

Having studied both the notification logs and the browse logs, it is useful to understand whether there is any correlation between the browsing and notification activities of users. We are interested in answering questions such as: (i) do users utilize one of the services significantly more than other services, and (ii) does their interest in particular content categories differ across the two services. We use the notification and browser logs, both spanning from August 15, 2000 through August 26, 2000 for the following analysis.