This work presents an evaluation of the Brazilian Portuguese LIWC dictionary for Sentiment
Analysis. This evaluation is conducted by comparison against two other sentiment resources …

The large amount of data available in social media, forums and websites motivates
researches in several areas of Natural Language Processing, such as sentiment analysis …

This work addresses the gap in aspect extraction techniques for Portuguese by adapting
methods originally designed for English. It focuses on TV devices and literary reviews in the …

Social distancing in response to the Covid-19 pandemic brought several modifications in our
daily lives. With these changes, some people have reported alterations in their feelings of …

O objetivo principal deste artigo é descrever o processo de elaboração de um léxico de
elementos afetivos da língua portuguesa e polaridades associadas, construído …

This work presents and evaluates a new Portuguese context sensitive lexicon for sentiment
analysis. Distinctive composition approaches to produce lexicons from established ones …

This paper presents the study and comparison of methods of different paradigms to perform
subjectivity classification of sentences in Portuguese. This task is part of the sentiment …

Texts published on social media have been a valuable source of information for companies
and users, as the analysis of this data helps improving/selecting products and services of …

Studies in sentiment analysis have examined how different features are effective in
identifying subjective sentences. Several studies on sentiment analysis exist in the literature …

Abstract Aspect Sentiment Triplet Extraction (ASTE) is an Aspect-Based Sentiment Analysis
subtask (ABSA). It aims to extract aspect-opinion pairs from a sentence and identify the …