add brief model background

README.md

@@ -36,6 +36,10 @@ co2_eq_emissions:
 
 ## Usage
 
+
+This model has been trained to predict whether an article from a historic newspaper is a 'recipe' or 'not a recipe'. 
+This model was trained on data generated by carrying out a keyword search of food terms and annotating examples results to indicate whether they were a recipe. 
+
 You can use cURL to access this model:
 
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