After developing the computational algorithms that predicted the historical order in which the senses of a word have emerged, the team tested these predictions against records of
English over the past millennium using the Historical Thesaurus of English, a large database in which each of a word's many senses is marked for its date of emergence into the language.
In comparing their computational predictions against the actual historical record provided by the Metaphor Map of
English, researchers found that their models correctly forecast about 75 percent of recorded metaphorical language mappings
over the
past millennium.