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- research-articleDecember 2023
A multi-dimensional framework to analyze group behavior based on political polarization
Expert Systems with Applications: An International Journal (EXWA), Volume 233, Issue Chttps://doi.org/10.1016/j.eswa.2023.120768AbstractThe recent wave of elections won by right-wing worldwide brings up increased discussions biased by political polarization, including in social media. Social media data enables the investigation of the contexts where political polarization occurs, ...
Highlights- Designs a multi-dimension framework to analyze politically biased behavior in Twitter
- Analyses polarization, concerns, social structure, psychological aspects, information
- Contributed to topic modeling by synergetically combining ...
- research-articleAugust 2023
Understanding stance classification of BERT models: an attention-based framework
Knowledge and Information Systems (KAIS), Volume 66, Issue 1Pages 419–451https://doi.org/10.1007/s10115-023-01962-yAbstractBERT produces state-of-the-art solutions for many natural language processing tasks at the cost of interpretability. As works discuss the value of BERT’s attention weights to this purpose, we contribute to the field by examining this issue in the ...
- review-articleApril 2023
Data management in digital twins: a systematic literature review
Knowledge and Information Systems (KAIS), Volume 65, Issue 8Pages 3165–3196https://doi.org/10.1007/s10115-023-01870-1AbstractThe Internet of Things (IoT) and continuous advances in data-gathering devices and techniques have significantly increased the amount of relevant data that can be leveraged for innovative real-time, data-driven applications. Digital Twins (DTs) ...
- research-articleApril 2022
Assessing the use of attention weights to interpret BERT-based stance classification
WI-IAT '21: IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent TechnologyPages 194–201https://doi.org/10.1145/3486622.3493966BERT models are currently state-of-the-art solutions for various tasks, including stance classification. However, these models are a black box for their users. Some proposals have leveraged the weights assigned by the internal attention mechanisms of ...
- research-articleFebruary 2021
Ranking Hotel Reviews Based on User's Aspects Importance and Opinions
NLPIR '20: Proceedings of the 4th International Conference on Natural Language Processing and Information RetrievalPages 157–162https://doi.org/10.1145/3443279.3443280Online product reviews have become fundamental to users' purchasing decisions. Many websites provide rating-based ranking of entities, but analyzing the set of textual reviews is still time-consuming. Indeed, each user (reader) must build his/her own ...
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- research-articleMarch 2019
A framework for event classification in tweets based on hybrid semantic enrichment
Expert Systems with Applications: An International Journal (EXWA), Volume 118, Issue CPages 522–538https://doi.org/10.1016/j.eswa.2018.10.028Highlights- A hybrid semantic enrichment framework to classify event-related tweets
- ...
Twitter has become instrumental as a means of spreading information, opinions or awareness about real-world events. The classification of event-related tweets is a challenging problem since tweets are noisy and sparse pieces of text ...
- research-articleAugust 2017
Studying toxic behavior influence and player chat in an online video game
WI '17: Proceedings of the International Conference on Web IntelligencePages 26–33https://doi.org/10.1145/3106426.3106452Many online collaborative games, e-sports in particular, heavily rely on teamwork. However, players can act in an antisocial way during the match, creating dissent into the match. This kind of behavior is referred to as toxic. We aim to discover the ...
- research-articleAugust 2017
MRR: an unsupervised algorithm to rank reviews by relevance
WI '17: Proceedings of the International Conference on Web IntelligencePages 877–883https://doi.org/10.1145/3106426.3106444The automatic detection of relevant reviews plays a major role in tasks such as opinion summarization, opinion-based recommendation, and opinion retrieval. Supervised approaches for ranking reviews by relevance rely on the existence of a significant, ...
- research-articleAugust 2017
Improving the classification of events in tweets using semantic enrichment
WI '17: Proceedings of the International Conference on Web IntelligencePages 581–588https://doi.org/10.1145/3106426.3106435Contextual enrichment using external sources has been proposed as a means to deal with the poor textual contents of tweets for event classification. Related work performs contextual enrichment according to specific assumptions about the events. ...
- research-articleMay 2017
Multilingual emotion classification using supervised learning
Information Processing and Management: an International Journal (IPRM), Volume 53, Issue 3Pages 684–704https://doi.org/10.1016/j.ipm.2016.12.008Investigated emotion classification in texts in a multilingual (ML) context.Assessed two ML strategies to compensate losses due to automatic translation.Assessed data pre-processing options and classification algorithms for emotion ...
- research-articleMay 2016
Sentiment analysis in tickets for IT support
MSR '16: Proceedings of the 13th International Conference on Mining Software RepositoriesPages 235–246https://doi.org/10.1145/2901739.2901781Sentiment analysis has been adopted in software engineering for problems such as software usability and sentiment of developers in open-source projects. This paper proposes a method to evaluate the sentiment contained in tickets for IT (Information ...
- ArticleAugust 2014
Sentiment-Based Features for Predicting Election Polls: A Case Study on the Brazilian Scenario
WI-IAT '14: Proceedings of the 2014 IEEE/WIC/ACM International Joint Conferences on Web Intelligence (WI) and Intelligent Agent Technologies (IAT) - Volume 02Pages 126–133https://doi.org/10.1109/WI-IAT.2014.89The success of opinion mining for automatically processing vast amounts of opinionated content available on the Internet has been demonstrated as a less expensive and lower latency solution for gathering public opinion. In this paper, we investigate ...
- ArticleJune 2013
Supporting Strategic Decision Making on Service Evolution Context Using Business Intelligence
SCC '13: Proceedings of the 2013 IEEE International Conference on Services ComputingPages 240–247https://doi.org/10.1109/SCC.2013.25With the growing demand for service-oriented applications, the complexity of service change management is increasing. Existing work essentially addresses change decisions from a technical perspective (e.g. versioning, compatibility), but providers need ...
- ArticleJune 2013
A Framework for Web Service Usage Profiles Discovery
ICWS '13: Proceedings of the 2013 IEEE 20th International Conference on Web ServicesPages 115–122https://doi.org/10.1109/ICWS.2013.25As part of web services life-cycle, providers frequently face decision about changes without a clear understanding of the impact on their clients. The identification of clients' consumption patterns constitute invaluable information to support more ...
- articleJanuary 2013
Usage Profiles: A Process for Discovering Usage Patterns over Web Services and its Application to Service Evolution
International Journal of Web Services Research (IJWSR-IGI), Volume 10, Issue 1Pages 1–28https://doi.org/10.4018/jwsr.2013010101As part of web services life-cycle, providers frequently face decision about changes without a clear understanding of the impact on their clients. The identification of clients' consumption patterns constitutes invaluable information to support more ...
- ArticleJune 2012
A Business Intelligence Approach to Support Decision Making in Service Evolution Management
SCC '12: Proceedings of the 2012 IEEE Ninth International Conference on Services ComputingPages 41–48https://doi.org/10.1109/SCC.2012.45Service evolution management imposes complex challenges to a service provider. Identifying which changes are necessary and choosing the ones to implement are some of the decisions that providers have to face. The decision making process involves the ...
- ArticleJune 2012
Measuring Change Impact Based on Usage Profiles
ICWS '12: Proceedings of the 2012 IEEE 19th International Conference on Web ServicesPages 226–233https://doi.org/10.1109/ICWS.2012.35Service evolution is a critical issue because even small changes, if not compatible, can potentially affect a huge number of client applications. However, particularly in the context of large scale service usage, changes have different impact on clients ...
- ArticleNovember 2011
An Automatic Approach for Duplicate Bibliographic Metadata Identification Using Classification
SCCC '11: Proceedings of the 2011 30th International Conference of the Chilean Computer Science SocietyPages 47–53https://doi.org/10.1109/SCCC.2011.8References are the main descriptive metadata used by digital libraries of scientific articles. These references can be represented by several formats and styles. Although considerable content variations can also occur in some metadata fields such as ...
- ArticleJuly 2011
Service Evolution Management Based on Usage Profile
ICWS '11: Proceedings of the 2011 IEEE International Conference on Web ServicesPages 746–747https://doi.org/10.1109/ICWS.2011.102Services have been increasingly used as the building blocks for decoupled and flexible applications. Service evolution is a critical issue because even small changes, if not compatible, can potentially affect a huge number of client applications. ...
- articleJanuary 2011
Automatic Determination of Compatibility in Evolving Services
International Journal of Web Services Research (IJWSR-IGI), Volume 8, Issue 1Pages 21–40https://doi.org/10.4018/jwsr.2011010102A major advantage of Service-Oriented Architectures SOA is composition and coordination of loosely coupled services. Because the development lifecycles of services and clients are de-coupled, multiple service versions must be maintained to support older ...