Sentiment analysis which means looking at a block of text and telling if this is Negative or Positive (okay oversimplified but the Wikipedia page has a good basic introduction into this https://en.wikipedia.org/wiki/Sentiment_analysis ) has been one of the standout applications of Machine learning for the last couple of years. If your a observer of what MAPI properties are available on Messages in your Inbox in Office365 like me you may have noticed a new one appear recently on some messages which is the Sentiment analysis of the body Text of an email eg Before I go any further everything I'm talking about in this post is from observation only and none of this as far as I know is documented anywhere. The entity extraction part of this is documented and is a relative new feature that can be used in Addin's (or other applications) https://docs.microsoft.com/en-us/outlook/add-ins/match-strings-in-an-item-as-well-known-entities . Entity extraction is one of those cool power u
Pushing the Envelope in Messaging and Office 365 Development