First, to be pedantic, e.g. and i.e. should always be followed by a comma, so you are dealing with grammatical errors. http://www.dailywritingtips.com/comma-after-i-e-and-e-g/.

There isn't a general solution to this problem because of names (e.g, H.G. Wells) and quoting, but perhaps 

/[.!?]\s{1,2}(?=[A-Z0-9])/

[download]
will be sufficiently robust for your need? In general, for a corpus like this, I'd split it into known good, known bad, and grey, and then use test-driven development in order to build out my filter.

Update: Augmented regex for ! and ?

#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.

In reply to Re: End of sentence regex excluding " i.e." and " e.g." by kennethk
in thread End of sentence regex excluding " i.e." and " e.g." by jabowery

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