Search Results for author: João Rodrigues

Found 12 papers, 4 papers with code

Assessing Wordnets with WordNet Embeddings

1 code implementation GWC 2019 Ruben Branco, João Rodrigues, Chakaveh Saedi, António Branco

An effective conversion method was proposed in the literature to obtain a lexical semantic space from a lexical semantic graph, thus permitting to obtain WordNet embeddings from WordNets.

Semantic Similarity Semantic Textual Similarity +1

Ctcovid19: Automatic Covid-19 Model for Computed Tomography Scans Using Deep Learning

1 code implementation Based Intelligence Medicine 2024 Carlos Antunes, João Rodrigues, António Cunha

Summary COVID-19 is an extremely contagious respiratory sickness instigated by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).

Open Sentence Embeddings for Portuguese with the Serafim PT* encoders family

no code implementations28 Jul 2024 Luís Gomes, António Branco, João Silva, João Rodrigues, Rodrigo Santos

Sentence encoder encode the semantics of their input, enabling key downstream applications such as classification, clustering, or retrieval.

Clustering Retrieval +2

Meta-prompting Optimized Retrieval-augmented Generation

no code implementations4 Jul 2024 João Rodrigues, António Branco

Retrieval-augmented generation resorts to content retrieved from external sources in order to leverage the performance of large language models in downstream tasks.

Multi-hop Question Answering Question Answering +2

PORTULAN ExtraGLUE Datasets and Models: Kick-starting a Benchmark for the Neural Processing of Portuguese

no code implementations8 Apr 2024 Tomás Osório, Bernardo Leite, Henrique Lopes Cardoso, Luís Gomes, João Rodrigues, Rodrigo Santos, António Branco

Similarly, the respective fine-tuned neural language models, developed with a low-rank adaptation approach, are made available as baselines that can stimulate future work on the neural processing of Portuguese.

Fostering the Ecosystem of Open Neural Encoders for Portuguese with Albertina PT* Family

no code implementations4 Mar 2024 Rodrigo Santos, João Rodrigues, Luís Gomes, João Silva, António Branco, Henrique Lopes Cardoso, Tomás Freitas Osório, Bernardo Leite

To foster the neural encoding of Portuguese, this paper contributes foundation encoder models that represent an expansion of the still very scarce ecosystem of large language models specifically developed for this language that are fully open, in the sense that they are open source and openly distributed for free under an open license for any purpose, thus including research and commercial usages.

Advancing Generative AI for Portuguese with Open Decoder Gervásio PT*

no code implementations29 Feb 2024 Rodrigo Santos, João Silva, Luís Gomes, João Rodrigues, António Branco

To advance the neural decoding of Portuguese, in this paper we present a fully open Transformer-based, instruction-tuned decoder model that sets a new state of the art in this respect.

Decoder

Advancing Neural Encoding of Portuguese with Transformer Albertina PT-*

no code implementations11 May 2023 João Rodrigues, Luís Gomes, João Silva, António Branco, Rodrigo Santos, Henrique Lopes Cardoso, Tomás Osório

To advance the neural encoding of Portuguese (PT), and a fortiori the technological preparation of this language for the digital age, we developed a Transformer-based foundation model that sets a new state of the art in this respect for two of its variants, namely European Portuguese from Portugal (PT-PT) and American Portuguese from Brazil (PT-BR).

Transfer Learning of Lexical Semantic Families for Argumentative Discourse Units Identification

no code implementations6 Sep 2022 João Rodrigues, Ruben Branco, António Branco

Experimental results show that transfer learning techniques are beneficial to the task and that current methods may be insufficient to leverage commonsense knowledge from different lexical semantic families.

Argument Mining Transfer Learning

Comparative Probing of Lexical Semantics Theories for Cognitive Plausibility and Technological Usefulness

no code implementations COLING 2020 António Branco, João Rodrigues, Małgorzata Salawa, Ruben Branco, Chakaveh Saedi

Lexical semantics theories differ in advocating that the meaning of words is represented as an inference graph, a feature mapping or a vector space, thus raising the question: is it the case that one of these approaches is superior to the others in representing lexical semantics appropriately?

Biosignals learning and synthesis using deep neural networks

1 code implementation BioMedical Engineering OnLine 2017 David Belo, João Rodrigues, João R. Vaz, Pedro Pezarat-Correia, Hugo Gamboa

Background Modeling physiological signals is a complex task both for understanding and synthesize biomedical signals.

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