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Fig. 1 | Systematic Reviews

Fig. 1

From: Toward systematic review automation: a practical guide to using machine learning tools in research synthesis

Fig. 1

Classifying text using machine learning, in this example logistic regression with a ‘bag of words’ representation of the texts. The system is ‘trained’, learning a coefficient (or weight) for each unique word in a manually labelled set of documents (typically in the 1000s). In use, the learned coefficients are used to predict a probability for an unknown document

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