https://wikidocs.net/book/2155
인터넷에 좋은 자료가 있어 기억하려고 추가했다.
https://radimrehurek.com/gensim/models/word2vec.html
word2vec api
https://machinelearningmastery.com/sequence-classification-lstm-recurrent-neural-networks-python-keras/
https://m.blog.naver.com/PostView.nhn?blogId=hist0134&logNo=221022212650&proxyReferer=https%3A%2F%2Fwww.google.com%2F
keras tokenizer
