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Dude, Where’s My Neural Net? An Informal and Slightly Personal History

Lexalytics

Fast-forward a couple of decades: I was (and still am) working at Lexalytics, a text-analytics company that has a comprehensive NLP stack developed over many years. This subjective impression is objectively backed up by the heat map below, constructed from a dump of the Microsoft Academic Graph (MAG) circa 2017 [ 21 ].

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Using Machine Learning for Sentiment Analysis: a Deep Dive

DataRobot Blog

It could be anything from a sentence to a paragraph to a longer-form collection of text. Analytically, we define the tf-idf of a term t as seen in document d , which is a member of a set of documents D as: tfidf( t, d, D ) = tf( t, d ) * idf( t, d, D ). We use the term “document” loosely.)