The conceptual ambiguity among terms like ’hate speech’, ’toxic speech’, and ’dangerous speech’ creates a significant bottleneck for both research and automated moderation. Traditional NLP models, often focused on lexical cues, struggle to differentiate these nuanced forms of linguistic violence, especially when the harm is implicit. This paper addresses this gap with a twofold objective. First, we conduct a conceptual review and propose a unified ontology that differentiates these concepts—including verbal aggression and cyberbullying—based on their core attributes, such as their target, intent, and associated rhetorical hallmarks. Second, we propose a computational methodology designed to operationalize this ontology. Our framework uses a multi-stage NLP pipeline that leverages semantic analysis, specifically Semantic Role Labeling and Named Entity Recognition, to deconstruct speech acts into their core components (e.g., target and action). This component-based approach allows for a granular classification that can robustly distinguish between seemingly similar phenomena, such as a general insult and a targeted identity-based attack. This methodology is particularly promising for low-resource languages, such as Portuguese, as it relies on core semantic tasks for which multilingual models are available, rather than requiring massive, task-specific labeled datasets.

This paper presents the adaptation of an Entity Centric Model for Portuguese coreference resolution, considering 10 named entity categories. The model was evaluated on named e using the HAREM Portuguese corpus and the results are 81.0% of precision and 58.3% of recall overall, the resulting system is freely available

This paper proposes a method to build bilingual dictionaries for specific domains defined by a parallel corpora. The proposed method is based on an original method that is not domain specific. Both the original and the proposed methods are constructed with previously available natural language processing tools. Therefore, this paper contribution resides in the choice and parametrization of the chosen tools. To illustrate the proposed method benefits we conduct an experiment over technical manuals in English and Portuguese. The results of our proposed method were analyzed by human specialists and our results indicates significant increases in precision for unigrams and muli-grams. Numerically, the precision increase is as big as 15% according to our evaluation.