Kenneth Brown
2026
Frame Semantic Patterns for Identifying Underreporting of Notifiable Events in Healthcare: The Case of Gender-Based Violence
Lívia Dutra | Arthur Lorenzi | Lais Berno | Franciany Campos | Karoline Biscardi | Kenneth Brown | Marcelo Viridiano | Frederico Belcavello | Ely E. Matos | Olivia Guaranha | Erik Santos | Sofia Reinach | Tiago Timponi Torrent
Proceedings of the Fifteenth Language Resources and Evaluation Conference
Lívia Dutra | Arthur Lorenzi | Lais Berno | Franciany Campos | Karoline Biscardi | Kenneth Brown | Marcelo Viridiano | Frederico Belcavello | Ely E. Matos | Olivia Guaranha | Erik Santos | Sofia Reinach | Tiago Timponi Torrent
Proceedings of the Fifteenth Language Resources and Evaluation Conference
We introduce a methodology for the identification of notifiable events in the domain of healthcare. The methodology harnesses semantic frames to define fine-grained patterns and search them in unstructured data, namely, open-text fields in e-medical records. We apply the methodology to the problem of underreporting of gender-based violence (GBV) in e-medical records produced during patients’ visits to primary care units. A total of eight patterns are defined and searched on a corpus of 21 million sentences in Brazilian Portuguese extracted from e-SUS APS. The results are manually evaluated by linguists and the precision of each pattern measured. Our findings reveal that the methodology effectively identifies reports of violence with a precision of 0.726, confirming its robustness. Designed as a transparent, efficient, low-carbon, and language-agnostic pipeline, the approach can be easily adapted to other health surveillance contexts, contributing to the broader, ethical, and explainable use of NLP in public health systems.
2025
Audition: A Frame-Annotated Multimodal Dataset for Accessible Audiovisual Content
Maucha Andrade Gamonal | Tiago Timponi Torrent | Ely Edison Matos | Adriana S. Pagano | Frederico Belcavello | Flávia Affonso Mayer | Arthur Lorenzi | Natalia S. Sigiliano | Helen de Andrade Abreu | Lívia Vicente Dutra | Marcelo Viridiano | André Coneglian | Victor A. S. Herbst | Franciany O. Campos | Kenneth Brown | Lívia Padua Ruiz | Lisandra Carvalho Bonoto | Luiz Fernando Pereira | Yulla Liquer Navarro
Proceedings of the 21st Joint ACL - ISO Workshop on Interoperable Semantic Annotation (ISA-21)
Maucha Andrade Gamonal | Tiago Timponi Torrent | Ely Edison Matos | Adriana S. Pagano | Frederico Belcavello | Flávia Affonso Mayer | Arthur Lorenzi | Natalia S. Sigiliano | Helen de Andrade Abreu | Lívia Vicente Dutra | Marcelo Viridiano | André Coneglian | Victor A. S. Herbst | Franciany O. Campos | Kenneth Brown | Lívia Padua Ruiz | Lisandra Carvalho Bonoto | Luiz Fernando Pereira | Yulla Liquer Navarro
Proceedings of the 21st Joint ACL - ISO Workshop on Interoperable Semantic Annotation (ISA-21)
This paper presents a multimodal semantic analysis of accessible Brazilian short films using a frame-based annotation approach. We introduce a subset of the Audition dataset, comprising six short films from the animation and documentary genres. We analysed three communicative modes: original audio, audio description, and visual content. Trained annotators semantically annotated each mode following the FrameNet Brazil multimodal methodology. To compare meaning across modalities, we used cosine similarity over frame-semantic representations. Results show that audio description aligns more closely with video content than original audio, reflecting its role in translating visual meaning into language. Our findings demonstrate the effectiveness of frame semantics in modelling meaning across modalities and provide quantitative evidence of audio description as a bridge between visual and verbal communication. The dataset and annotation strategies are a valuable resource for research on multimodal representation, semantic similarity, and accessible media.
2024
Error Tracing in Programming: A Path to Personalised Feedback
Martha Shaka | Diego Carraro | Kenneth Brown
Proceedings of the 19th Workshop on Innovative Use of NLP for Building Educational Applications (BEA 2024)
Martha Shaka | Diego Carraro | Kenneth Brown
Proceedings of the 19th Workshop on Innovative Use of NLP for Building Educational Applications (BEA 2024)
Knowledge tracing, the process of estimating students’ mastery over concepts from their past performance and predicting future outcomes, often relies on binary pass/fail predictions. This hinders the provision of specific feedback by failing to diagnose precise errors. We present an error-tracing model for learning programming that advances traditional knowledge tracing by employing multi-label classification to forecast exact errors students may generate. Through experiments on a real student dataset, we validate our approach and compare it to two baseline knowledge-tracing methods. We demonstrate an improved ability to predict specific errors, for first attempts and for subsequent attempts at individual problems.
2023
Building a Frame-Semantic Model of the Healthcare Domain: Towards the identification of gender-based violence in public health data
Livia Dutra | Arthur Lorenzi | Lorena Larre | Frederico Belcavello | Ely Matos | Amanda Pestana | Kenneth Brown | Mariana Gonalves | Victor Herbst | Sofia Reinach | Renato Teixeira | Pedro de Paula | Alessandra Pellini | Cibele Sequeira | Ester Sabino | Fabio Leal | Mônica Conde | Regina Grespan | Tiago Torrent
Proceedings of the 14th Brazilian Symposium in Information and Human Language Technology
Livia Dutra | Arthur Lorenzi | Lorena Larre | Frederico Belcavello | Ely Matos | Amanda Pestana | Kenneth Brown | Mariana Gonalves | Victor Herbst | Sofia Reinach | Renato Teixeira | Pedro de Paula | Alessandra Pellini | Cibele Sequeira | Ester Sabino | Fabio Leal | Mônica Conde | Regina Grespan | Tiago Torrent
Proceedings of the 14th Brazilian Symposium in Information and Human Language Technology
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Co-authors
- Frederico Belcavello 3
- Arthur Lorenzi 3
- Tiago Timponi Torrent 3
- Lívia Dutra 2
- Sofia Reinach 2
- Marcelo Viridiano 2
- Helen de Andrade Abreu 1
- Lais Berno 1
- Karoline Biscardi 1
- Lisandra Carvalho Bonoto 1
- Franciany Campos 1
- Franciany O. Campos 1
- Diego Carraro 1
- Mônica Conde 1
- André Coneglian 1
- Lívia Vicente Dutra 1
- Maucha Andrade Gamonal 1
- Mariana Gonalves 1
- Regina Grespan 1
- Olívia Guaranha 1
- Victor Herbst 1
- Victor A. S. Herbst 1
- Lorena Larré 1
- Fabio Leal 1
- Ely Edison da Silva Matos 1
- Ely E. Matos 1
- Ely Edison Matos 1
- Flávia Affonso Mayer 1
- Yulla Liquer Navarro 1
- Adriana Silvina Pagano 1
- Pedro de Paula 1
- Alessandra Pellini 1
- Luiz Fernando Pereira 1
- Amanda Pestana 1
- Lívia Pádua Ruiz 1
- Ester Sabino 1
- Erik Santos 1
- Cibele Sequeira 1
- Martha Shaka 1
- Natalia S. Sigiliano 1
- Renato Teixeira 1