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Publications

Publications by CRACS

2019

A Brief Overview on the Strategies to Fight Back the Spread of False Information

Authors
Figueira, ?; Guimaraes, N; Torgo, L; CRACS-INESCTEC and University of Porto, Porto, Portugal,; CRACS-INESCTEC and University of Porto, Porto, Portugal,; Faculty of Computer Science, Dalhousie University, Halifax, Nova Scotia, Canada,;

Publication
JOURNAL OF WEB ENGINEERING

Abstract
The proliferation of false information on social networks is one of the hardest challenges in today's society, with implications capable of changing users perception on what is a fact or rumor. Due to its complexity, there has been an overwhelming number of contributions from the research community like the analysis of specific events where rumors are spread, analysis of the propagation of false content on the network, or machine learning algorithms to distinguish what is a fact and what is "fake news". In this paper, we identify and summarize some of the most prevalent works on the different categories studied. Finally, we also discuss the methods applied to deceive users and what are the next main challenges of this area.

2019

Preventing Failures by Predicting Students’ Grades through an Analysis of Logged Data of Online Interactions

Authors
Cabral, B; Figueira, Á;

Publication
Proceedings of the 11th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management

Abstract

2019

Temporal network alignment via GoT-WAVE

Authors
Aparicio, D; Ribeiro, P; Milenkovic, T; Silva, F;

Publication
Bioinformatics

Abstract

2019

Iris: Secure reliable live-streaming with opportunistic mobile edge cloud offloading

Authors
Martins, R; Correia, ME; Antunes, L; Silva, F;

Publication
Future Generation Computer Systems

Abstract
The ever-increasing demand for higher quality live streams is driving the need for better networking infrastructures, specially when disseminating content over highly congested areas, such as stadiums, concerts and museums. Traditional approaches to handle this type of scenario relies on a combination of cellular data, through 4G distributed antenna arrays (DAS), with a high count of WiFi (802.11) access points. This obvious requires a substantial upfront cost for equipment, planning and deployment. Recently, new efforts have been introduced to securely leverage the capabilities of wireless multipath, including WiFi multicast, 4G, and device-to-device communications. In order to solve these issues, we propose an approach that lessens the requirements imposed on the wireless infrastructures while potentially expanding wireless coverage through the crowd-sourcing of mobile devices. In order to achieve this, we propose a novel pervasive approach that combines secure distributed systems, WiFi multicast, erasure coding, source coding and opportunistic offloading that makes use of hyperlocal mobile edge clouds. We empirically show that our solution is able to offer a 11 fold reduction on the infrastructural WiFi bandwidth usage without having to modify any existing software or firmware stacks while ensuring stream integrity, authorization and authentication. © 2019 Elsevier B.V.

2019

Estimating time and score uncertainty in generating successful learning paths under time constraints

Authors
Nabizadeh, AH; Jorge, AM; Leal, JP;

Publication
Expert Systems

Abstract

2019

Quarmic: A data-driven web development framework

Authors
Pereira Cunha, PM; Leal, JP;

Publication
OpenAccess Series in Informatics

Abstract
Quarmic is a web framework for rapid prototyping of web applications. Its main goal is to facilitate the development of web applications by providing a high level of abstraction that hides Web communication complexities. This framework allows developers to build scalable applications capable of handling data communication in different models, data persistence and authentication, requiring them just to use simple annotations. Quarmic’s approach consists of the replication of the shared object among clients and server in order to communicate through its methods execution. Where the annotations, namely decorators, are used to indicate the concern (model or view) that each method addresses and to implement the framework’s inversion of control. By indicating the method concern, it enables the separation of its execution across the clients (responsible for the view) and the server (responsible for the model) which facilitates the state management and code maintenance. © Pedro M. P. Cunha and José P. Leal.

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