Typical lexicon size in natlangs
Gary Shannon | May 11, 2013
Alex Fink wrote:
> For instance, it's a number bandied around that knowing 500 hanzi will allow you
> to read 90% of the characters in a Chinese newspaper -- but usually by people
> who don't appreciate the fact that this includes all the grammatical and closed-class
> words, and a swathe of basic lexis, but probably not the ìnteresting word or two
> in the headline you care about.
For example, if you know the most common 28 words in English you can read 50% of everything written. But what does THAT mean if 50% means that you can read only 50% of each sentence?
[...]
https://groups.yahoo.com/neo/groups/conlang/conversations/messages/196779
Or, if you get really ambitious you can learn 732 words and read 90% of everything written in English. If you want to be able to read 99.9% of everything written in English you will need to learn 2090 words. (These figures are from my own million-word corpus taken from 20th century fiction and non-fiction on Gutenberg.com.)
So what does it really mean to say you can read 90% by knowing 732 words?
Maybe the only meaningful measure of lexicon size is how many words you must know to cover some specified x% of the whole of the written corpus. That's a very different number for Toki Pona than it is for English. That way you could talk meaningfully about a specific language's "90% coverage lexicon", and its "98% coverage lexicon", and so on.
--gary
https://groups.yahoo.com/neo/groups/conlang/conversations/messages/196779
