LIA at SemEval-2017 Task 4: An Ensemble of Neural Networks for Sentiment Classification
Mickaël Rouvier · 2017
This paper describes the system developed at LIA for the SemEval-2017 evaluation campaign.The goal of Task 4.A was to identify sentiment polarity in tweets.The system is an ensemble of Deep Neural Network (DNN) models: Convolutional Neural Network (CNN) and Recurrent Neural Network Long Short-Term Memory (RNN-LSTM).We initialize the input representation of DNN with different sets of embeddings trained on large datasets.The ensemble of DNNs are combined using a score-level fusion approach.The system ranked 2 nd at SemEval-2017 and obtained an average recall of 67.6%.