STRUCTURED SENTIMENT ANALYSIS MODELING WITH BART BASED ENCODER-DECODER AND BI-LSTM.

Sentiment Analysis or SA is one of the most widely used fields in Natural Language Processing or NLP today. SA itself also has a lot of branches such as aspect-based, end2end, targeted, and more. Because of this many branches, it becomes difficult to track the development of SA as whole. To overc...

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Bibliographic Details
Main Author: Putra Tjandra, Andrianata
Format: Final Project
Language:Indonesia
Online Access:https://digilib.itb.ac.id/gdl/view/77876
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Institution: Institut Teknologi Bandung
Language: Indonesia
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Summary:Sentiment Analysis or SA is one of the most widely used fields in Natural Language Processing or NLP today. SA itself also has a lot of branches such as aspect-based, end2end, targeted, and more. Because of this many branches, it becomes difficult to track the development of SA as whole. To overcome this, a solution is given in the form of Structured Sentiment Analysis which aims to predict the holder, target, expression, and polarity of sentences collectively in a tuple. One of the methods used is the BART-based Encoder-Decoder, but this method has a weakness in handling long sentences and sentences without opinions. Therefore, a solution is proposed to overcome these weaknesses by combining BART with an RNN or Recurrent Neural Network. From a number of alternative RNNs that have been studied, a bi-LSTM was finally selected for use. From the results obtained, the use of bi-LSTM can improve the performance of BART-based Encoder-Decoder.