Cookies
O website necessita de alguns cookies e outros recursos semelhantes para funcionar. Caso o permita, o INESC TEC irá utilizar cookies para recolher dados sobre as suas visitas, contribuindo, assim, para estatísticas agregadas que permitem melhorar o nosso serviço. Ver mais
Aceitar Rejeitar
  • Menu
Publicações

2023

Public News Archive: A Searchable Sub-archive to Portuguese Past News Articles

Autores
Campos, R; Correia, D; Jatowt, A;

Publicação
ADVANCES IN INFORMATION RETRIEVAL, ECIR 2023, PT III

Abstract
Over the past fewdecades, the amount of information generated turned the Web into the largest knowledge infrastructure existing to date. Web archives have been at the forefront of data preservation, preventing the losses of significant data to humankind. Different snapshots of the web are saved everyday enabling users to surf the past web and to travel through this overtime. Despite these efforts, many people are not aware that the web is being preserved, often finding these infrastructures to be unattractive or difficult to use, when compared to common search engines. In this paper, we give a step towards making use of this preserved information to develop Public Archive an intuitive interface that enables end-users to search and analyze a large-scale of 67,242 past preserved news articles belonging to a Portuguese reference newspaper (Jornal Publico). The referred collection was obtained by scraping 10,976 versions of the homepage of the Jornal Publico preserved by the Portuguese web archive infrastructure (Arquivo.pt) during the time-period of 2010 to 2021. By doing this, we aim, not only to mark a stand in what respects to make use of this preserved information, but also to come up with an easy-to-follow solution, the Public Archive python package, which creates the roots to be used (with minor adaptations) by other news source providers interested in offering their readers access to past news articles.

2023

Geographic Information Systems in Archaeology: A Systematic Review

Autores
Menéndez Marsh, F; Al Rawi, M; Fonte, J; Dias, R; Gonçalves, LJ; Seco, LG; Hipólito, J; Machado, JP; Medina, J; Moreira, J; Do Pereiro, T; Vázquez, M; Neves, A;

Publicação
Journal of Computer Applications in Archaeology

Abstract
GIS are an essential element in archaeology. Their use has become widespread for their potential to store, reference, analyse and visualise spatial information. Nonetheless, to the best of our knowledge, a systematic review of academic peer-reviewed publications related to the use of GIS, as a framework, in archaeology has never been presented before. Our goal in this work is to identify what has been published so far in relation to using GIS in archaeology within a small selected sample. We used the PRISMA guideline to perform a systematic review of 671 publications that we identified using the SCOPUS database and the keywords ‘GIS’ and ‘archaeology’. The collected publications were screened, analysed, and categorized into different relevant categories. Our analysis shows that GIS, in our selected sample, are mostly used for visualization and information management tasks. Moreover, spatial analysis studies were more common than other studies, and theoretical publications are scarce. The lack of a theoretical background in GIS may be the cause of some of the problems related to GIS applications in archaeology.

2023

From Real-Time Marketing to Corporate Social Responsibility

Autores
Carvalho, CL; Barbosa, B; Santos, CA;

Publicação
Advances in Business Strategy and Competitive Advantage

Abstract
Social media strategies are commonly adopted by large and SMEs due to the expected impacts on customer engagement, branding, sales, and overall company performance. One particularly interesting strategy conducted on social media is real-time marketing (RTM) that enables the company to get involved in the discussion of trending topics. The main aim of this chapter is to analyze RTM impacts on user engagement in the case of socially relevant topics, particularly Women's Day. It provides an analysis of publications by the 25 most valuable brands in Brazil (comprising both large companies and SME) and explores the interconnections between RTM publications and CSR policies. One main conclusion is that companies should approach socially relevant dates in accordance with their CSR policies, and that successful RTM initiatives can comprise alternative approaches: promotional actions, tributes, and CSR. The findings of this chapter are particularly relevant for SMEs, considering the democratic nature of RTM and overall social media strategies.

2023

New Insights in Machine Learning and Deep Neural Networks

Autores
Figueira, Á; Renna, F;

Publicação

Abstract

2023

Intelligent energy systems ontology to support markets and power systems co-simulation interoperability

Autores
Santos, G; Morais, H; Pinto, T; Corchado, JM; Vale, Z;

Publicação
ENERGY CONVERSION AND MANAGEMENT-X

Abstract
The significant changes the electricity sector has been suffering in the latest decades increased the complexity and unpredictability of power and energy systems (PES). To deal with such a volatile environment, different software tools are available to simulate, study, test, and support the decisions of the various entities involved in the sector. However, being developed for specific subdomains of PES, these tools lack interoperability with each other, hindering the possibility to achieve more complex and complete simulations, management, operation and decision support scenarios. This paper presents the Intelligent Energy Systems Ontology (IESO), which provides semantic interoperability within a society of multi-agent systems (MAS) in the frame of PES. It leverages the knowledge from existing and publicly available semantic models developed for specific domains to accomplish a shared vocabulary among the agents of the MAS society, overcoming the existing heterogeneity among the reused ontologies. Moreover, IESO provides agents with semantic reasoning, constraints validation, and data uniformization. The use of IESO is demonstrated through a case study that simulates the management of a distribution grid, considering the validation of the network's technical constraints. The results demonstrate the applicability of IESO for semantic interoperability, reasoning through constraints validation, and automatic units' conversion. IESO is publicly available and accomplishes the pre-established requirements for ontology sharing.

2023

Segmentation as a Pre-processing for Automatic Grape Moths Detection

Autores
Teixeira, AC; Carneiro, GA; Morais, R; Sousa, JJ; Cunha, A;

Publicação
PROGRESS IN ARTIFICIAL INTELLIGENCE, EPIA 2023, PT II

Abstract
Grape moths are a significant pest in vineyards, causing damage and losses in wine production. Pheromone traps are used to monitor grape moth populations and determine their developmental status to make informed decisions regarding pest control. Smart pest monitoring systems that employ sensors, cameras, and artificial intelligence algorithms are becoming increasingly popular due to their ability to streamline the monitoring process. In this study, we investigate the effectiveness of using segmentation as a pre-processing step to improve the detection of grape moths in trap images using deep learning models. We train two segmentation models, the U-Net architecture with ResNet18 and InceptionV3 backbonesl, and utilize the segmented and non-segmented images in the YOLOv5s and YOLOv8s detectors to evaluate the impact of segmentation on detection. Our results show that segmentation preprocessing can significantly improve detection by 3% for YOLOv5 and 1.2% for YOLOv8. These findings highlight the potential of segmentation pre-processing for enhancing insect detection in smart pest monitoring systems, paving the way for further exploration of different training methods.

  • 644
  • 4390