SAP BusinessObjects - Data Definitions

Our goal is to capture the usage patterns [frequency of report executions, report popularity, and most recent report executions] for SAP BO reports that are retrieved from CMS DB. According to the definitions provided for BO, we understand that Run and Refresh are actions that generate new reports. However, when we look at audit log, we find a lot of View and Retrieve events that are difficult to interpret.

1) Could you provide a more in-depth/user-friendly definition of these actions (Run, Refresh, View, Retrieve) so that we can truly understand report usage within our organization?

2) In order to calculate the usage pattern, do you believe that these are events that we need to look at?

Thank you very much!