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by tehwalrus 4657 days ago
The Dasher input method (aimed at people with disabilities who are able to enter data only by manipulating a pointer) uses a visualized trie with vertex areas proportional to linguistic probability:

http://www.inference.phy.cam.ac.uk/dasher/DasherSummary2.htm...

(Prof. Mackay, its author, uses it to teach information theory and compression, among other things.)