The Compute content for refined target is a sub task that  occurres after the compute analysis unit full content. This sub task is triggered when the user has configured the refined target in the dependencies as you can see in the below screenshot.

It allows to select a scope of object type on which the dependencies and also the reference pattern will be applicable.

There is no dedicated log for Compute content for refined target, the information appears only in the CAST-MS log file.

Then Compute for Refined Target occurs after the Compute Analysis full content and when the Refined target is configured

Select the log lines that you are interested in from the list below

CAST-MS<ID>.log.txt

The CAST MS log file contains information about all the task and sub task occurring during the Take Snapshot.

Regarding the Compute content for refined target, the only information we have is when the sub task is started, when it is finished and if it has failed.

Compute content for refined Target

INF: 2016-07-26 09:44:31: starting Task Compute content for Refined Target on PLSQL Schema is SCOTT
INF: 2016-07-26 09:44:31: Task message: No Task message
INF: 2016-07-26 09:44:31: No associated log file
INF: 2016-07-26 09:44:31: ending Task Compute content for Refined Target on PLSQL Schema is SCOTT