Hello,
I am very familiar with NLP and finite automata, I would need to look at the papers to give you the estimation for the timeline of the work as well as the cost, it may be lower or higher that my bid.
However, I can guarantee you that I can provide you one of the lowest price with the same quality, my implementation is always at least 85% correct, and usually its 100%.
Feel free to contact me for further discussion.