Chatbots are computer programs that identify sentence keywords and make query decisions. The use of chatbots in the medical industry has grown significantly in recent years, revolutionizing patient support, healthcare interactions, and the dissemination of medical information. A medical chatbot that can recognize illnesses and provide basic information about them is to be created using artificial intelligence. This will lower healthcare costs and increase the availability of medical information. Ranking and sentence similarity calculation is performed using n-grams. TFIDF and cosine similarity using the LangChain model. For the given query, more similar sentences are obtained, and a score is obtained for each sentence in the input sentence.

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