What PHP AI libraries exist for writing text (based on other texts)?

Question

PHP

In general, there are "letter" -> "answer" pairs.
It is planned that these couples will go to AI training.
Actually, this is some kind of ready-made AI solution that would be suitable for "writing" an answer to an incoming letter, i.e. to compose a text using the example of existing letters.
Is there something ready? Or in what direction to move in this case?
Neural networks?
English text.

Answer 1

I think first we should decide what kind of task we will solve:
- if we need to extract the entities mentioned by the user, process them and substitute them in a template response (perhaps one of many) - this seems to be a task for NER (named entity recognition)
- if the task is reduced to choosing one of a finite set of classes - this is the task, in fact, of classification (perhaps not solved quite "on the forehead" - but still classification)
- if the task is not reduced to the two above - then what kind of task is this?
ps I wouldn't count on php. In any case, the prototype will probably be easier to throw in python with its wagons and carts of libraries for NLP and ML.