Search Results for author: Arlindo L. Oliveira

Found 16 papers, 6 papers with code

Finding Regions of Interest in Whole Slide Images Using Multiple Instance Learning

no code implementations1 Apr 2024 Martim Afonso, Praphulla M. S. Bhawsar, Monjoy Saha, Jonas S. Almeida, Arlindo L. Oliveira

Whole Slide Images (WSI), obtained by high-resolution digital scanning of microscope slides at multiple scales, are the cornerstone of modern Digital Pathology.

Multiple Instance Learning whole slide images

DE-COP: Detecting Copyrighted Content in Language Models Training Data

1 code implementation15 Feb 2024 André V. Duarte, Xuandong Zhao, Arlindo L. Oliveira, Lei LI

We are motivated by the premise that a language model is likely to identify verbatim excerpts from its training text.

Language Modelling Multiple-choice

DeepThought: An Architecture for Autonomous Self-motivated Systems

no code implementations14 Nov 2023 Arlindo L. Oliveira, Tiago Domingos, Mário Figueiredo, Pedro U. Lima

We argue that the internal architecture of LLMs and their finite and volatile state cannot support any of these properties.

Matching the Neuronal Representations of V1 is Necessary to Improve Robustness in CNNs with V1-like Front-ends

1 code implementation16 Oct 2023 Ruxandra Barbulescu, Tiago Marques, Arlindo L. Oliveira

Here, we further explore this result and show that the neuronal representations that emerge from precisely matching the distribution of RF properties found in primate V1 is key for this improvement in robustness.

Object Recognition

Improving Address Matching using Siamese Transformer Networks

1 code implementation5 Jul 2023 André V. Duarte, Arlindo L. Oliveira

This research introduces a deep learning-based model designed to increase the efficiency of address matching for Portuguese addresses.

Connecting metrics for shape-texture knowledge in computer vision

no code implementations25 Jan 2023 Tiago Oliveira, Tiago Marques, Arlindo L. Oliveira

Finally, we observed that while in general there is a correlation between performance and shape bias, there are significant variations between architecture families.

Image Classification Object Recognition

Pretraining the Vision Transformer using self-supervised methods for vision based Deep Reinforcement Learning

1 code implementation22 Sep 2022 Manuel Goulão, Arlindo L. Oliveira

With this work, we hope to provide some insights into the representations learned by ViT during a self-supervised pretraining with observations from RL environments and which properties arise in the representations that lead to the best-performing agents.

Atari Games Atari Games 100k +3

Assessing Policy, Loss and Planning Combinations in Reinforcement Learning using a New Modular Architecture

no code implementations8 Jan 2022 Tiago Gaspar Oliveira, Arlindo L. Oliveira

In this work, we propose a new modular software architecture suited for these types of agents, and a set of building blocks that can be easily reused and assembled to construct new model-based reinforcement learning agents.

Model-based Reinforcement Learning reinforcement-learning +1

Assessing the Impact of Attention and Self-Attention Mechanisms on the Classification of Skin Lesions

no code implementations23 Dec 2021 Rafael Pedro, Arlindo L. Oliveira

In this work, we study and perform an objective comparison of a number of different attention mechanisms in a specific computer vision task, the classification of samples in the widely used Skin Cancer MNIST dataset.

Using Soft Labels to Model Uncertainty in Medical Image Segmentation

no code implementations26 Sep 2021 João Lourenço Silva, Arlindo L. Oliveira

Inspired by this, we propose a simple method to obtain soft labels from the annotations of multiple physicians and train models that, for each image, produce a single well-calibrated output that can be thresholded at multiple confidence levels, according to each application's precision-recall requirements.

Image Segmentation Medical Image Segmentation +3

Modelling Neuronal Behaviour with Time Series Regression: Recurrent Neural Networks on C. Elegans Data

no code implementations1 Jul 2021 Gonçalo Mestre, Ruxandra Barbulescu, Arlindo L. Oliveira, L. Miguel Silveira

In this paper we show how the nervous system of C. Elegans can be modelled and simulated with data-driven models using different neural network architectures.

Benchmarking regression +2

Automated Detection of Coronary Artery Stenosis in X-ray Angiography using Deep Neural Networks

no code implementations4 Mar 2021 Dinis L. Rodrigues, Miguel Nobre Menezes, Fausto J. Pinto, Arlindo L. Oliveira

Coronary artery disease leading up to stenosis, the partial or total blocking of coronary arteries, is a severe condition that affects millions of patients each year.

Blocking Data Augmentation +1

Conditional Random Fields as Recurrent Neural Networks for 3D Medical Imaging Segmentation

2 code implementations19 Jul 2018 Miguel Monteiro, Mário A. T. Figueiredo, Arlindo L. Oliveira

In this paper, we test whether this algorithm, which was shown to improve semantic segmentation for 2D RGB images, is able to improve segmentation quality for 3D multi-modal medical images.

3D Medical Imaging Segmentation Segmentation +2

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