I wish to create a system where I give a sentence and the system spits out sentences similar in meaning to the input sentence I gave

Question

This is an NLP problem and I was wondering how I should proceed.

How difficult is the problem? Could I replace the word with synonyms and check that the grammar is

Answer 1

Replacing words with synonyms is probably the first thing to try, but be careful not to miss multiple words expressions and idioms. Also, make sure you choose a synonym with the same part of speech.

they look for a good solution < ! > they view/stare/... for a good solution

they work hard < ! > they job/task/… hard

More complicated rephrasing is only possible if you use some level of grammatical analysis. You should at least recognize constituents within a sentence.

Here are some examples for rephrasing which take into consideration the grammatical structure of the sentence:

the dog ate my homework < > my homework was eaten by the dog (passivisation)

the bone of the dog was stolen < > the dog’s bone was stolen (possessive rephrasing)

she sent him a letter < > she sent a letter to him (verb complements replacing)

my name is Bond < > Bond is my name (copular)

the cat ate the cake < > it was the cat who ate the cake (cleft)

Have a look at Contextors API and its Voice Conjugator