Can Matlab distinguish between meaningful and meaningless strings?

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BBB 2019-10-17

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评论： BBB 2019-10-24

Hi, is there any way to ask matlab to filter out a meaningful string statement (i.e., like a proper sentence e.g., 'It is Sunday today') from a bunch of meaningless string statements (i.e., not a proper sentence e.g., 'ksjhgd2ss)? I am trying to write some if-statements that can essentially help filter out the meaningful sentences from a bunch of meaningless string sentences. Please Help!

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KALYAN ACHARJYA 2019-10-17

编辑：KALYAN ACHARJYA 2019-10-17

Are you considering all texts or some specifics only?

Nice question, but not so easy to answer. I am following ..

BBB 2019-10-17

A single specific sentence out of a bunch of meaningless sentences.

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Answer 1

Walter Roberson 2019-10-17

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The field of study of rigorously distinguishing between "meaningful" sentences and those that are not, is called Logical Positivism. My understanding is that it is considered a dead end except amongst people who are followers of philosopher Ayn Rand.

If you were willing to restrict the vocabulary to a limited set and were willing to establish a strict grammar, then for some kinds of grammar it is possible to write machine parsers to recognize all sentences that are "well formed" under those rules. But it is not simple to write rules properly that can distinguish that "The orange is green" is completely sensible, and that "The orange is cyan" is maybe okay (spray paint the citrus fruit cyan) but that "The cyan is orange" is meaningless.