Vasco Furtado

Vasco Furtado
Universidade de Fortaleza · Department of Computer Science

phd

About

208
Publications
33,200
Reads
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1,454
Citations
Citations since 2016
75 Research Items
939 Citations
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
Additional affiliations
September 1984 - present
Universidade de Fortaleza
Position
  • Professor (Full)

Publications

Publications (208)
Article
The use of intelligent voice assistants is enabling people who previously could not easily interact with a graphical interface to have access to digital services. However recent works have shown that voice assistants fail to attend certain types of user’s profile. Our research focus on the interaction to an IVA with people with illiterate people. A...
Conference Paper
Diversos esforços vem ocorrendo com o intuito de mitigar os efeitos da crescente complexidade inerente da Justiça brasileira. Nesse contexto, apresentamos uma abordagem baseada em Redes Complexas que relaciona assuntos jurídicos da Tabela Processual Unificada do primeiro grau da Justiça Federal do Conselho Nacional de Justiça. A partir de conceitos...
Chapter
Legal text processing is a challenging task for modeling approaches due to the peculiarities inherent to its features, such as long texts and their technical vocabulary. Topic modeling consists of discovering a semantic structure in the text. This paper investigates the application of topic modeling and the use of information about the legislation...
Chapter
Full-text available
The relationship between governments and their citizens has changed with the rise of ICTs. Even if these changes can strengthen the active role of society in the control and participation of public administration, there is a risk that this process can increase exclusion especially in developing countries, mainly because a large part of the populati...
Article
Full-text available
We investigate, through a data-driven contact tracing model, the transmission of COVID-19 inside buses during distinct phases of the pandemic in a large Brazilian city. From this microscopic approach, we recover the networks of close contacts within consecutive time windows. A longitudinal comparison is then performed by upscaling the traced contac...
Preprint
Full-text available
As cities struggle to adapt to more ``people-centered'' urbanism, transportation planning and engineering must innovate to expand the street network strategically in order to ensure efficiency but also to deter sprawl. Here, we conducted a study of over 200 cities around the world to understand the impact that the patterns of deceleration points in...
Article
Full-text available
Listing people alphabetically on an electronic output device is a traditional technique, since alphabetical order is easily perceived by users and facilitates access to information. However, this apparently harmless technique, especially when the list is ordered by first name, needs to be used with caution by designers and programmers. We show, via...
Conference Paper
Um processo judicial é formado, em essência, por uma sequência de atos que são traduzidos em movimentações processuais que carregam o histórico do desenvolvimento das atividades realizadas pelas mais diversas partes no curso da demanda processual. Neste trabalho, explicitamos os caminhos mais prováveis que caracterizam as classes de processos judic...
Preprint
Full-text available
We investigate, through a data-driven contact tracing model, the transmission of COVID-19 inside buses during distinct phases of the pandemic in a large Brazilian city. From this microscopic approach, we recover the networks of close contacts within consecutive time windows. A longitudinal comparison is then performed by upscaling the traced contac...
Article
New technologies such as voice-based personal digital assistants (PDA) provide many benefits and new efficiencies, but they also may have negative effects on socially vulnerable groups. There are a number of ways in which PDAs could be used that can create new ethical and legal issues. In this article, we discuss the conceptual and practical challe...
Conference Paper
Floresta Aleatória é um algoritmo popular e efetivo na resolução de problemas de classificação e regressão. As predições de uma Floresta Aleatória são feitas considerando que cada árvore possui igual contribuição no resultado final. Este trabalho propõe um novo método de ponderação de árvores de regressão com o objetivo de melhorar o poder de predi...
Article
Dengue is a vector-borne disease transmitted by the Aedes genus mosquito. It causes financial burdens on public health systems and considerable morbidity and mortality. Tropical regions in the Americas and Asia are the areas most affected by the virus. Fortaleza is a city with approximately 2.6 million inhabitants in northeastern Brazil that, durin...
Preprint
Full-text available
Listing people alphabetically on an electronic output device is a traditional technique, since alphabetical order is easily perceived by users and facilitates access to information. However, this apparently harmless technique, especially when the list is ordered by first name, needs to be used with caution by designers and programmers. We show, via...
Article
Full-text available
Objective: To assess trends and predictors of the glomerular filtration rate (GFR) after renal mass cryoablation in patients with and without history of renal impairment. Materials and Methods: This was a retrospective study of 39 patients who underwent computed tomography-guided percutaneous cryoablation of a renal mass, divided into two groups:...
Conference Paper
Full-text available
Assistentes de Voz Inteligentes (AVI) estão se tornando cada vez mais populares em todo o mundo, provendo fácil interação para realização de serviços e acessos a dispositivos. No entanto, o treinamento desses assistentes de voz pode estar limitado a falas padronizadas gerando o risco de desestimular a adoção desta tecnologia inclusiva por grupos co...
Article
Full-text available
Low‐power wide area networks (LP‐WANs) protocols are considered options to meet the requirements of Internet of Things (IoT) solutions that need long‐range communication with low power consumption. Few studies intended to evaluate the performance of the same class of protocols coexisting in the same environment and with mobility support. This paper...
Article
Extraction keyphrase systems traditionally use classification algorithms and do not consider the fact that part of the keyphrases may not be found in the text, reducing the accuracy of such algorithms a priori. In this work, we propose to improve the accuracy of these systems with inferential mechanisms that use a knowledge representation model, in...
Article
Full-text available
Introduction To assess the performance of pre-ablation computed tomography texture features of adrenal metastases to predict post-treatment local progression and survival in patients who underwent ablation using machine learning as a prediction tool. Materials and Methods This is a pilot retrospective study of patients with adrenal metastases unde...
Conference Paper
Full-text available
In this paper, we investigate a university classroom assignment problem, using an Integer Linear Programming model to solve it. The problem consists of assigning all courses in such a way to avoid that two courses are assigned to the same classroom at the same time. Considering the current allocation in use by the institution, the focus of this pro...
Article
Full-text available
Mobile ad hoc network (MANET) is a gathering of self‐ruling mobile nodes in which ad hoc network framed without settled foundation. Dynamic topology property of MANET may debase the execution of the network, mobility attentiveness, and energy effectiveness because of an ideal cluster head (CH). The low energy adaptive clustering hierarchy protocol...
Preprint
We present here the Temporal Clustering Algorithm (TCA), an incremental learning algorithm applicable to problems of anticipatory computing in the context of the Internet of Things. This algorithm was tested in a specific prediction scenario of consumption of an electric water dispenser typically used in tropical countries, in which the ambient tem...
Article
Full-text available
Drainage basins are essential to Geohydrology and Biodiversity. Defining those regions in a simple, robust and efficient way is a constant challenge in Earth Science. Here, we introduce a model to delineate multiple drainage basins through an extension of the Invasion Percolation-Based Algorithm (IPBA). In order to prove the potential of our approa...
Article
Full-text available
The article investigates policies for helping emergency-centre authorities for dispatching resources aimed at reducing goals such as response time, the number of unattended calls, the attending of priority calls, and the cost of displacement of vehicles. Pareto Set is shown to be the appropriated way to support the representation of policies of dis...
Article
Full-text available
The relationship between governments and their citizens has changed with the rise of ICTs. Even if these changes can strengthen the active role of society in the control and participation of public administration, there is a risk that this process can increase exclusion especially in developing countries, mainly because a large part of the populati...
Conference Paper
Full-text available
Voice-based assistants are becoming increasingly widespread all over the world. However, the performance of these assistants in the interaction with users of languages and accents of developing countries is not clear yet. Eventual bias against specific language or accent of different groups of people in developing countries is maybe a factor to inc...
Article
This research presents a tool that allows for the quantitative definition of what parts of a given urban surrounding would potentially affect the way urban landscapes are visually perceived. The motivating problem refers to the negative effects anthropomorphic changes in urban settings have on the heritagescape (heritage sites composed of three gui...
Article
The knowledge of flying insects wing-beat acoustical properties supported the progress of sensing disease vectors mosquitoes in free flight. The classification of individual flying insects species’ through wing-beat frequencies and respective harmonics is the principle of frequency spectrum analysis method both in acoustical and optical sensors app...
Article
Full-text available
Internet of Things (IoT) management systems require scalability, standardized communication, and context-awareness to achieve the management of connected devices with security and accuracy in real environments. Interoperability and heterogeneity between hardware and application layers are also critical issues. To attend to the network requirements...
Conference Paper
The low weight of fetus at birth is considered one of the most critical problems in pregnancy care, affecting the newborn's health and leading it to death in more severe cases. This condition is responsible for the high infant mortality rates worldwide. In health, artificial intelligence techniques, especially those based on machine learning (ML),...
Article
Cloud Computing has been a predominant approach for the development of Internet of Things (IoT) solutions. However, to meet the requirements of real-time and latency-sensitive applications in healthcare, a new computing paradigm that follows a Cloud computing approach, called Fog Computing, demonstrates to be an effective tool by extending the Clou...
Article
Full-text available
The Internet of Things (IoT) is an emerging paradigm that proposes the connection of objects to exchange information in order to reach a common objective. In IoT networks, it is expected that the nodes will exchange data between each other and with external Internet services. However, due to deployment costs, not all the network devices are able to...
Article
Full-text available
With the increase of population density and the rural exodus to cities, urbanization is assuming extreme proportions and presents a tremendous urban problem related to waste generation. The increase of waste generation has been considered a significant challenge to large urban centers worldwide and represents a critical issue for countries with acc...
Preprint
Drainage basins are essential to Geohydrology and Biodiversity. Properly defining those regions in a simple and robust way still represents a challenge in Earth Science. Here, we introduce a model to delineate multiple drainage basins through an extension of the Invasion Percolation-Based Algorithm (IPBA). In order to prove the potential of our app...
Article
Full-text available
Abstract It is well reported that long commutes have a large detrimental effect on people’s health and on the economy of cities. Interestingly, despite the strong impact on our daily lives, a simple way to measure the quality of urban transportation is still unknown. We performed data analysis on the transportation network of two large cities (Fort...
Article
Full-text available
Abstract The imbalance between the quantity of supply and demand in public transport systems causes a series of disruptions in large metropolises. While extremely crowded vehicles are uncomfortable for passengers, virtually empty vehicles generate economic losses for system managers, and this usually comes back to passengers in the form of fare inc...
Conference Paper
Full-text available
In this paper, we describe Mission Kid, a mobile exergame to tackle the obesity problem in children. Mission Kid involves a digital game played on the smartphone that requires the execution of physical exercises by the child. Smartphones are used for sensoring and processing the movements performed during the exercises. The application has an intel...
Conference Paper
Solid waste management is a significant worldwide problem, including, for municipalities located within large urban areas. Efficient waste management is an essential requisite for a clean and safe environment, and keep cities away from the harm caused by the mismanagement of solid waste produced in urban centers. There are many technologies for man...
Preprint
The development of edge computing has allowed the Internet of Things (IoT) to reach higher levels of operational efficiency, knowledge generation, and decision-making through a better relationship between applications and their users. The principal idea is the processing of large amounts of data close to the network edge, where these data are gener...
Conference Paper
The competitive software development market is making its users increasingly demanding quality of use of such software. Alongside this, there are few software development companies investing in usability tests, because they don’t have experts in usability. As a contribution of this work, there is a methodology that has two directions in which the h...
Conference Paper
Full-text available
Prematurity represents the determinant cause of infant mortality. This serious public health problem is directly related to the assistance provided during pregnancy and childbirth. Hence, this paper proposes the use of leading machine learning techniques capable of supporting health experts in pattern recognition in the prediction of high-risk situ...
Article
Full-text available
The shape of urban settlements plays a fundamental role in their sustainable planning. To properly define the boundaries of cities is challenging and remains an open problem in the Science of Cities. Here, we propose a worldwide model to define urban settlements beyond their administrative boundaries through a bottom-up approach that takes into acc...
Preprint
UNSTRUCTURED The article investigates policies for helping emergency-centre authorities for dispatching resources aimed at reducing goals such as response time, the number of unattended calls, the attending of priority calls, and the cost of displacement of vehicles. Pareto Set is shown to be the appropriated way to support the representation of po...
Conference Paper
Full-text available
Resumo. Este artigo descreve a base de conhecimento de Frames Semânticos Forenses-FrameFOR. Demonstramos através de avaliações experimentais que a aplicação das técnicas de Anotação de Papéis Semânticos (APS) e Processamento de Linguagem Natural (PLN), em perícias de informática, aumenta o desempenho em relação as ferramentas utilizadas para anális...
Article
Purpose: To assess biopsy technique, technical success rate, and diagnostic yield of image-guided percutaneous biopsy of omental and mesenteric lesions. Materials and methods: This retrospective study included 186 patients (89 men, 97 women; mean [SD] age, 63 [13.8] y) who underwent percutaneous image-guided biopsy of omentum and mesentery betwe...
Conference Paper
Recentemente foi constatado a maioria da população do globo terrestre está nas grandes metrópoles. Esse crescimento populacional traz consigo uma série de desafios e o transporte público aparece como uma solução recorrente para atacar problemas de mobilidade nessas grandes cidades. Neste trabalho, foi realizado um estudo de caso para ajudar a compr...
Article
In this paper we propose a Hidden Markov Model in order to predict the sentiment of soccer fans based on information regarding the result of matches. The model was constructed by data collected from a social network where fans of a soccer team periodically expressed feelings towards their team. We show that the choice of a HMM is justified due to t...
Conference Paper
Full-text available
In this paper we describe a simulation platform that supports studies on the impact of crime on urban mobility. We present an example of how this can be achieved by seeking to understand the effect, on the transport system, if users of this system decide to choose optimal routes of time between origins and destinations that normally follow. Based o...
Article
Full-text available
The maintenance of big cities public transport service quality requires constant monitoring, which may become an expensive and time-consuming practice. The perception of quality, from the users point of view is an important aspect of quality monitoring. In this sense, we proposed a methodology for data analysis and visualization, supported by softw...
Article
Full-text available
Motivated by recent findings that human mobility is proxy for crime behavior in big cities and that there is a superlinear relationship between the people's movement and crime, this article aims to evaluate the impact of how these findings influence police allocation. More precisely, we shed light on the differences between an allocation strategy,...
Article
Full-text available
As part of Smart Cities initiatives, national, regional and local governments all over the globe are under the mandate of being more open regarding how they share their data. Under this mandate, many of these governments are publishing data under the umbrella of open government data, which includes measurement data from city-wide sensor networks. F...
Conference Paper
Full-text available
In the context of Smart Cities, indicator definitions have been used to calculate values that enable the comparison among different cities. The calculation of an indicator values has challenges as the calculation may need to combine some aspects of quality while addressing different levels of abstraction. Knowledge graphs (KGs) have been used succe...
Article
Full-text available
In this paper we describe an automatic generator to support the data scientist to construct, in a user-friendly way, dashboards from data represented as networks. The generator called SBINet (Semantic for Business Intelligence from Networks) has a semantic layer that, through ontologies, describes the data that represents a network as well as the p...
Article
Full-text available
In this paper, a comparative study was conducted between complex networks representing origin and destination survey data. Similarities were found between the characteristics of the networks of Brazilian cities with networks of foreign cities. Power laws were found in the distributions of edge weights and this scale - free behavior can occur due to...
Data
The urban mobility data processing, lack of correlation between POP vs PC and FLO vs DP, additional information about the choosing of ℓ and D* and data summary. (PDF)
Article
Full-text available
We investigate at the subscale of the neighborhoods of a highly populated city the incidence of property crimes in terms of both the resident and the floating population. Our results show that a relevant allometric relation could only be observed between property crimes and floating population. More precisely, the evidence of a superlinear behavior...
Conference Paper
This paper describes a framework to guide designers on how to investigate UX empowerment by using PGIS to support the decision making process. Investigative questions are proposed and aligned with UX elements in order to facilitate the access to information and its discussion within a community, as well as empower users (decision makers) to act not...
Conference Paper
Keyphrase assignment has often been confounded with keyphrase extraction, since the basic hypothesis is that a keyphrase of a text must be extracted from this text. Typically, keyphrase extraction approaches use a training set restricted to textual terms, reducing the learning capabilities of any inductive algorithm. Our research investigates ways...
Article
Full-text available
In this paper, we describe a case study in a big metropolis, in which from data collected by digital sensors, we tried to understand mobility patterns of persons using buses and how this can generate knowledge to suggest interventions that are applied incrementally into the transportation network in use. We have first estimated an Origin-Destinatio...
Article
Full-text available
We propose here a methodology to help to understand the shortcomings of public transportation in a city via the mining of complex networks representing the supply and demand of public transport. We show how to build these networks based upon data on smart card use in buses via the application of algorithms that estimate an OD and reconstruct the co...