Sentiment Analysis in the Light of LSTM Recurrent Neural Networks

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Author(s): Subarno Pal (Academy of Technology, Hooghly, India), Soumadip Ghosh (Academy of Technology, Hooghly, India)and Amitava Nag (Academy of Technology, Hooghly, India)
Copyright: 2018
Volume: 9
Issue: 1
Pages: 7
Source title: International Journal of Synthetic Emotions (IJSE)
DOI: 10.4018/IJSE.2018010103

Keywords: Cognitive Informatics / Computer Science & IT / Information Science Reference / Robotics

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Abstract

Long short-term memory (LSTM) is a special type of recurrent neural network (RNN) architecture that was designed over simple RNNs for modeling temporal sequences and their long-range dependencies more accurately. In this article, the authors work with different types of LSTM architectures for sentiment analysis of movie reviews. It has been showed that LSTM RNNs are more effective than deep neural networks and conventional RNNs for sentiment analysis. Here, the authors explore different architectures associated with LSTM models to study their relative performance on sentiment analysis. A simple LSTM is first constructed and its performance is studied. On subsequent stages, the LSTM layer is stacked one upon another which shows an increase in accuracy. Later the LSTM layers were made bidirectional to convey data both forward and backward in the network. The authors hereby show that a layered deep LSTM with bidirectional connections has better performance in terms of accuracy compared to the simpler versions of LSTM used here.

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Sentiment Analysis in the Light of LSTM Recurrent Neural Networks

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