Using Stanford NLP to run a sentiment analysis with F#

Stanford NLP is a great tool for text analysis and Sergey Tihon did a great job demonstrating how it can be called from .NET code with C# and F#.

Purpose of this post is to show how StanfordNLP sentiment analysis can be called from F# application. Code used in this example provides sentiment value - from very negative to very positive - for all sentences of the specified text.

Prerequisites:

    -Nuget Stanford.NLP.CoreNLP package needs to be installed (this code works with 3.4.0.0)  
    -Java binaries should be downloaded from http://nlp.stanford.edu/software/stanford-corenlp-full-2014-06-16.zip and unzipped. After that you need to extract content of stanford-corenlp-3.4-
models.jar(it is part of the zip file)to some directory.  

Source code:

    F# code is elegant as usual :)


    To call this method you can use following code, where models location should be set to modelsDir variable:


    Enjoy!