... birth rates for word formation processes to the model, neces- sitated by the additional large numbers of rare 277 for word frequency distributions. Unfortunately, comparing the results of ... (1975), have been put forward, all of which have Zipf's law as some special or limiting form. Unrelated to Zipf's law is the lognormal hypothesis, advanced for word fre- quency ... matrix 7 ) defines a uniform distribu- tion (all pi# equal), we immediately have that the expected neighborhood density for length rnl is identical for all targets Yt, while for length m~ >...