An AI-based question and answer system and method can present descriptive answers to various questions of the user through the steps of user inquiry, query type classification, question-related document selection, correct answer location search, descriptive answer generation, and answer presentation steps. More specifically, in the question answering system for presenting an AI answer to a user query, a memory for storing instructions, and executing the instructions: classify a user query type of a user query based on a query type classification model, and converts a user query type to a fact query based on the type conversion model, selects a query-related document from the search target documents based on the similarity between the document vector of each of the search target documents and the fact query query vector, and understands the machine document Based on the machine reading comprehension (MRC) model, the correct answer position is searched inside the document related to the question, and the correct answer derived from the correct answer position is post-processed according to the question type to generate a short answer type answer to the user's query, and a processor configured to present an AI answer by converting a short-answer type answer into an open-ended answer based on the improved Seq2Seq model.
AI AI BASED QUESTION AND ANSWER SYSTEM AND METHOD