Score = Vlike × Plike + Vlove × Plove + Vangry × Pangry + Vcomment × Pcomment + Vshare × Pshare ...

The algorithm then returns the given word, its part of speech, and its lemma, or base-form. Sentiment analysis is done using VADER: Valence Aware Dictionary and sEntiment Reasoner.

Google has been at this for a long time. Experienced SEO hands will remember Google Panda, a major update to Google’s algorithm that removed “low-quality sites,” which first rolled out in 2011.