Extending general sentiment lexicon to specific domains in (semi-)automatic manner

• Type: Article in International Conference Proceedings Book
• Date: 2022

Authors

Brazdil, Pavel (Author) FEP; Silvano, Maria da Purificação (Author) FLUP; Silva, Maria de Fátima Henriques da (Author) FLUP; Muhammad, Shamsuddeen (Author) Other; Oliveira, Fátima (Author) FLUP; Cordeiro, João (Author) Other; Leal, António (Author) FLUP

Conference proceedings International

Title: 1st Workshop on Sentiment Analysis & Linguistic Linked Data: Proceedings of the Workshops and Tutorials held at LDK 2021 co-located with the 3rd Language, Data and Knowledge Conference (LDK 2021)

Pages: 110-125

1st Workshop on Sentiment Analysis & Linguistic Linked Data

Zaragoza, 2021

Indexing

Scopus

Scientific classification

CORDIS: Humanities > language sciences

Other information

Abstract (EN): This paper describes an approach to the construction of a sentiment analysis system that uses both automatic and manual processes. The system includes a domain-specific sentiment lexicon, modifier patterns and rules that are used to derive the sentiment values of sentences in new texts. The lexicon that includes single words (unigrams) is obtained in an automatic manner from the distribution of ratings for all words in the labelled training data. The sentiment values of phrases is derived from a list of modifier patterns, built/developed manually. These include a modifier and a focal element. The modifiers can be of different types, depending on whether the operation is intensification, downtoning or reversal. This approach was applied to texts on economics and finance in European Portuguese. In our view, this line of work deserves more attention in the community, as the system not only has reasonable performance, but also can provide understandable explanations to the user.

Language: English

Type (Professor's evaluation): Scientific

Notes: Disponível em: http://ceur-ws.org/Vol-3064/01_Brazdil_Pavel.pdf