Tuesday, June 26, 2018
Recurrent Neural Network RNN Basics
Recurrent Neural Network (RNN) is useful for processing sequence data like sound, words, and time series data . RNN remembers a bit of the state from before. It can predict what will come next. Time series is good for heart disease over time, hormone level, blood sugar.
RNN weakness: sometimes gradients too close to 0 or too computationally large. It can also be bad at tracking long term memories - need to use LSTM instead, which has a forget gate, input gate, update layer, output layer
Transform sequences like text, music, time series data,
Build a RNN generate new text character by character
Natural language processing, Word embedding, Word2Vec model, Semantic relationship between words,
Combine embedding and RNN to predict sentiment of movie reviews
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