“…The reported results make evident that the authors agree that sentiments can be extracted, processed and classified, using a wide variety of algorithms and they recognize that the lexicon-based approach, standard machine-based approach, and deep learning-based approach are the three main approaches in SA. In most of the publications summarized in Table 2, a comparison is made between algorithms, methods and models to be applied for SA; highlighting, in this sense, the application of Artificial Neural Networks (ANN) (Batrinca & Treleaven, 2015); Recurrent Neural Network (RNN) (Goel et al, 2018), (Khan & Malviya, 2020); Single-layered Long-Short Term Memory (LSTM) (Moshkin et al, 2019), (Chintalapudi et al, 2021), (Mujahid et al, 2021), (Velampalli et al, 2022); and Neural Network (NN) (Mostafa et al, 2021), (Khasanova & Pasechnik, 2021), (Velampalli et al, 2022). Term presence versus term frequency, N-gram features, parts of speech tagging (Mejova & Srinivasan, 2011).…”