Define a Sentiment Expression
A Sentiment Expression is an Expression that is used to determine the sentiment of text and returns a numerical value.
Sentiment Expressions utilize Microsoft's Machine Learning libraries and a base "binary sentiment model" which was provided by Microsoft and trained via Wikipedia. For more information, see https://dotnet.microsoft.com/apps/machinelearning-ai/ml-dotnet.
Text that has an overall positive sentiment will return a positive number. Text that has an overall negative sentiment will return a negative number.
To define a Sentiment Expression: