I'm not an expert on haikus, but I'm guessing that in English, there's an accepted convention that each line in a haiku generally serves as an independent clause?
So:
What she has given
them is institutional
hagiography
is less "aesthetic" than:
The story's not clear;
Durer may have cooked it up
just to do a nude
One extra layer of machine work could be to use NLP to filter out phrases in which the fifth/seventh syllable doesn't belong to a word that is not a noun. It would be interesting to see how much more it would filter/improve the auto-generated haikus.
Eh, I think the only somewhat-hard requirement is seventeen syllables, and even that is often waved in favor of aesthetics. Plus they really tend to work better in Japanese anyway.
Somewhat on-topic: Jack Kerouac made attempts to "Americanize" the haiku form a bit, which I always thought were pretty neat. I think they're collected in a book called (something like) Book of Haiku.
According to the American Haiku Society (yes, it exists), the syllable count is actually less important than including a seasonal word and a "cut" between two different sets of imagery. But that's a little harder to teach a bit of hack code to do... so...
So:
is less "aesthetic" than: One extra layer of machine work could be to use NLP to filter out phrases in which the fifth/seventh syllable doesn't belong to a word that is not a noun. It would be interesting to see how much more it would filter/improve the auto-generated haikus.