102 documents found, page 1 of 11
Are Passive Exchange-Traded Funds a Catalyst for Market Instability?
Alves, Carlos; Gomes, DiogoExchange-traded funds (ETFs) figure prominently as a notable outcome of financial innovation, offering a cost-efficient avenue for acquiring a diversified portfolio and enabling frequent trading. However, the significant expansion of the ETF market has raised concerns among investors and regulators. The heightened liquidity and passive characteristics of indexed ETFs have the potential to lead to synchronized m...
Moving Target Defense for the cloud/edge Telco environments
Escaleira, Pedro; Cunha, Vitor; Gomes, Diogo; Barraca, João P.; Aguiar, Rui L.The Internet of Things (IoT) paradigm has been one of the main contributors, in recent years, to the growth in the number of connected equipment. This fact has predominantly contributed to IoT being constrained by the 5th Generation Mobile Network (5G) progress and the promises this technology brings. However, this can be a double-edged sword. On the one hand, it will benefit from those progresses, but on the o...
Towards a universal and interoperable scientific data model
Oliveira, João; Gomes, Diogo; Santana, Francisca; Oliveira e Sá, Jorge; Portela, FilipeThe growing number of researchers in Portugal has intensified the appearance of several scientific platforms that allow the indexation of publications and the management of scientific profiles. The diversity and high number of platforms brings problems at the level of crossover and integrity of the information, i.e., the researchers’ profiles are rarely updated, and their data are not properly grouped and cross...
Data analysis for trajectory generation for a robot manipulator using data from...
Gomes, Diogo; Alvarez, Mariano José; Brancalião, Laiany; Carneiro, Jorge; Gonçalves, Gil; Costa, Paulo Gomes da; Gonçalves, José; Pinto, Vítor H.Nowadays, the automation of factory floors is necessary for extensive manufacturing processes to meet the ever-increasing competitiveness of current markets. The technological advances applied to the digital platforms have led many businesses to automate their manufacturing processes, introducing robotic manipulators collaborating with human operators to achieve new productivity, manufacturing quality, and safe...
Prototyping and control of an automatic ceramic tableware finishing device
Alvarez, Mariano Jose; Brancalião, Laiany Suganuma; Gomes, Diogo; Pinto, Vítor H.; Carneiro, Jorge; Santos, José M.R.C.A.; Coelho, João PauloThis paper presents a first prototype of an automated system that will be applied in stoneware tableware ceramics finishing, being developed in the scope of STC 4.0 HP project. The main objective of this prototype is to test different alternatives to obtain a precise finish on ceramic pieces produced by GRESTEL - PRODUTOS CERÂMICOS S.A, improving the production of irregular pieces that until now are finished us...
Entre líquenes e abelhas - Era uma vez... Eureka!
Gomes, Diogo; Rites, Inês; Nobre, AlexandraSTOL-Science Through Our Lives é um grupo de comunicação de Ciência do Departamento de Biologia (DBio) – UMinho que há mais de 10 anos combate a iliteracia científica desenhando acões de intervenção que vão ao encontro de diferentes públicos-alvo. Era uma vez... Eureka! é um exemplo. Consiste num conjunto de oficinas temáticas de Ciência dirigidas aos 1º e 2º ciclos do Ensino Básico, que conjugam as Ciências, a...
Towards a fully automated system for testing and validating NetApps
Direito, Rafael; Gomes, Diogo; Aguiar, Rui L.5G technologies provide several advancements regarding low latency and high bandwidth network scenarios, thus enabling new vertical use cases. Nonetheless, the lack of testing and validation mechanisms for NFV-based services poses a severe challenge in reducing their time to market. In this work we showcase a service to automate the validation of 5G NetApps, thus striving towards reducing the time to market of ...
Portuguese word embeddings for the oil and gas industry: Development and evalua...
Gomes, Diogo; Cordeiro, Fábio; Consoli, Bernardo; Santos, Nikolas; Moreira, Viviane; Vieira, Renata; Moraes, Silvia; Evsukoff, AlexandreOver the last decades, oil and gas companies have been facing a continuous increase of data collected in unstructured textual format. New disruptive technologies, such as natural language processing and machine learning, present an unprecedented opportunity to extract a wealth of valuable information within these documents. Word embedding models are one of the most fundamental units of natural language processi...
Embeddings for Named Entity Recognition in Geoscience Portuguese Literature
Consoli, Bernardo; Santos, Joaquim; Gomes, Diogo; Cordeiro, Fabio; Vieira, Renata; Moreira, VivianeThis work focuses on Portuguese Named Entity Recognition (NER) in the Geology domain. The only domain-specific dataset in the Portuguese language annotated for Named Entity Recognition is the GeoCorpus. Our approach relies on Bidirecional Long Short-Term Memory - Conditional Random Fields neural networks (BiLSTM-CRF) - a widely used type of network for this area of research - that use vector and tensor embeddin...
Misalignment problem in matrix decomposition with missing values
Fernandes, Sofia; Antunes, Mário; Gomes, Diogo; Aguiar, RuiData collection within a real-world environment may be compromised by several factors such as data-logger malfunctions and communication errors, during which no data is collected. As a consequence, appropriate tools are required to handle the missing values when analysing and processing such data. This problem is often tackled via matrix decomposition. While it has been successfully applied in a wide range of a...