The sentiment analysis is no magical calculation.
The auto tag option brings the tags and the sentiment score associated with those tags from IBM Watson and those tags are displayed along with each comment in the widget.
You can understand all the components of the tags here:
Sentiment analysis provides you the option to drill down on a tag to reach to the root cause of the issue. Find out how!
Click on the tag you want to drill down from the chart. From the big percentage figure, you can check out the proportion of that tag in the entire data set.
As you drill down, the comments on the right section will be filtered based on the tag you have selected.
You can drill down further to reach to the minimum number of comments related to the chosen tags.
This way the chart and the comments help you reach to the base level/ root cause of the problem.
Yes, the tags can be muted/unmuted based on relevance.
Hover over the tag and click on the 'Cross(X)' to stop viewing any tag in the chart. Similarly, you can anytime click on the 'tick mark' present on the muted tag to start viewing it all over again.
This feature helps you keep the relevance of the chart intact.
Yes, two or more tags can be merged into one. Find out how!