Although the uniform distribution can be useful in specific applications such as dictionary disambiguation (Litkowski 2004;Flati and Navigli 2012), or knowledge resource mapping (Navigli and Ponzetto 2012a;Matuschek and Gurevych 2013), in natural text we know that most of the occurrences of an ambiguous word correspond to a usually small subset of predominant senses of that word (Zipf 1949;Sanderson and Van Rijsbergen 1999).
occurrences of an ambiguous word in a real text are usually distributed across its senses according to a highly skewed distribution.