I've managed to get myself into a rollback war with a user on this post. The original title was
Way of obtaining chomsky normalform, does it influence performance of CYK parser?
which I changed to
Does the particular CNF representation of a grammar influence the performance of a CYK parser?
which the OP then changed back to the original version, which I then changed back, which was then changed by the OP back to
Way of obtaining Chomsky normal form, does it influence performance of CYK parser?
My understanding from the comments is that the OP is concerned with confusing Chomsky Normal form and Conjunctive normal form, which I agree needs to be disambiguated. However, to my eye at least, the OP's phrasing is not proper English.
Of late, I've been doing 'broken-window' work where I clean up capitalizations and add punctuation etc, on the grounds that a cleaned up question is more likely to be answered, and also reflects better on the page and site as a whole.
My question is: at what point should I stop attempting to fix grammar on questions when the OP seems unwilling to accept my changes ?