Logging
There exists a log4net extension that provides logging using log4net. Please, download the nuget package Appccelerate.SourceTemplates to get the sample code. You can either take the source as is, or change it so it meets your logging requirements.
You can set the log extension on the evaluation engine:
This logs messages like the following:
You can see which strategy, aggregator and expressions were used. And what the individual expressions returned as results and what the answer was.