Here's a small set of resources that was used to drive the technology behind Membean This is largely incomplete and we will improve on it soon. We'll provide a complete list of papers that have been used as reference.



Membean has employed a diverse set corpora for selecting words and determining their difficulties.


  • The Word Constellation Exploratory Visualization makes use of Wordnet
  • Word Empire's Word Empire Clarity word trees were used to construct the dataset for the Root-Word Tree visualization.
  • Graph Drawing