Archives for 

Defenses

Dissertation defense (April 28, 2021): Leonardo Ferreira dos Santos

Student: Leonardo Ferreira dos Santos

Title: Automatic identification of sexual predatory activities in virtual conversations in Brazil

Advisor: Gustavo Paiva Guedes e Silva

Committee: Gustavo Paiva Guedes e Silva (president), Eduardo Bezerra da Silva (CEFET/RJ), Eduardo Soares Ogasawara (CEFET/RJ), Ronaldo Ribeiro Goldschmidt (IME)

Day/Time:  April 28, 2021 / 14h.

Room: http://meet.google.com/vtf-bmvn-frp

Abstract: The use of the internet by children and adolescents provides access to a set of opportunities for their self-development. Access to information, educational material, entertainment, and socialization are some of the options available. The use of social networks is one of the main channels for socializing on the internet. By creating a public profile when joining the social network, children and adolescents can develop connections with other people and establish communication through virtual conversations. Sexual predators, in turn, make use of social networks to deceive these children and adolescents, establish a deceptive relationship for subsequent execution of various criminal activities, such as obtaining pornographic content, extortion, and the practice of sexual abuse. In this scenario, several studies have focused on the identification of sexual predators on the internet. Although it is a widely explored research domain, no studies considered the task of virtual conversations conducted in Brazil’s Portuguese language. Given the problem introduced, the present research has its primary objective to propose a method that offers significant results for identifying predatory activity in textual conversations carried out on the internet. A set of 82 anonymous predatory chats and criminal evidence present in judicial proceedings was considered the basis for the domain studies to understand sexual predatory activity in Brazil better. After the analysis of predatory conversations, a total of nineteen textual and behavioral characteristics identified served as the basis for creating the MDAP method. A data set with similar properties when compared to the data set of PAN-2012 competition validated the proposed method, using 82 predatory conversations as a basis. When compared to the state of the art candidate methods for the research domain, the results obtained prove the efficiency of the MDAP method for identifying predatory activity in textual conversations, presenting itself as an alternative to promote a safer virtual environment for children and adolescents.

Dissertation defense (April 28, 2021): Rodolpho da Silva Nascimento

 Student: Rodolpho da Silva Nascimento Title: A Comparative Analysis Between Affective Lexicons in Portuguese Advisor: Gustavo Paiva Guedes e Silva Committee: Gustavo Paiva Guedes e Silva (president), Kele Teixeira Belloze (CEFET/RJ), Raimundo Santos Moura (UFPI) Day/Time:  April 28, 2021 / 10h. Room: http://meet.google.com/iir-fyjz-sum Abstract: Affective Computing is a research area that studies the use of techniques that […] Continue reading →

Dissertation defense (March 05, 2021): Antonio Jose de Castro Filho

 Student: Antonio Jose de Castro Filho Title: Mining of Space and Time Constrained Sequences Advisors: Rafaelli Coutinho (advisor) and Eduardo Ogasawara (co-advisor) Committee: Rafaelli Coutinho (president), Eduardo Ogasawara (CEFET/RJ), Jorge Soares (CEFET/RJ), Esther Pacitti (INRIA) Day/Time: March 05, 2021 / 10h. Room: meet.google.com/eck-qenz-vap Abstract: Spatio-temporal patterns bring knowledge about time and position where they are present. […] Continue reading →

Dissertation defense (January 29, 2021): Leandro Maia Gonçalves

 Student: Leandro Maia Gonçalves Title: Hot-deck imputation: A systematic review of literature  Advisor:  Jorge de Abreu Soares Committee: Jorge de Abreu Soares (president), Eduardo Soares Ogasawara (CEFET/RJ) e José Maria da Silva Monteiro Filho (UFC) Day/time: January 29, 2021 / 10h. Room: https://meet.google.com/mkz-opya-skv Abstract: Organizations have realized that investing in transforming data into information to assist […] Continue reading →

Dissertation defense (December 30, 2020): Jefferson Colares de Paula

 Student: Jefferson Colares de Paula Title: Long Term Person Re-identification Using Multimodal Features Advisors: Diego Barreto Haddad (advisor), Douglas Oliveira Cardoso (co-advisor) Committee: Diego Barreto Haddad (president), Douglas Oliveira Cardoso (CEFET/RJ), Fernanda Duarte Vilela Reis de Oliveira (UFRJ), Eduardo Bezerra da Silva (CEFET/RJ), Gabriel Matos Araujo (CEFET/RJ) Day/Time:  December 30, 2020 / 14h. Room: https://teams.microsoft.com/l/meetup-join/19%3ameeting_NGJhNTJlZWUtNWY5OS00OWM2LWE3ZWEtNmFmNWI1MDNmZWYy%40thread.v2/0?context=%7b%22Tid%22%3a%228eeca404-a47d-4555-a2d4-0f3619041c9c%22%2c%22Oid%22%3a%229287392f-fc6f-454c-a314-46c0529f6841%22%7d […] Continue reading →

Dissertation defense (December 04, 2020): Fernando Pereira Gonçalves de Sá

 Student: Fernando Pereira Gonçalves de Sá Title:Detecção de Anomalias em Turbinas Eólicas utilizando Modelos baseados em Dados Advisors: Diego Nunes Brandão (advisor), Rodrigo Franco Toso (co-advisor) Committee: Diego Nunes Brandão (president), Rodrigo Franco Toso (Microsoft AI & Research), Anderson de Rezende Rocha (UNICAMP), Diego Barreto Haddad (CEFET/RJ) Day/Time:  December 04, 2020 / 14h. Room: https://us02web.zoom.us/j/82318000409?pwd=ajR2R0pMcytyR1VCa1BYdzVuLzFUUT09 […] Continue reading →

Dissertation defense (December 10, 2020): Raphael Correia de Souza Fialho

 Student: Raphael Correia de Souza Fialho Title: Estimating Photometric Redshifts with Error-Sensitive Regularization Advisors: Eduardo Bezerra (advisor), Ricardo Ogando (co-advisor) Committee: Eduardo Bezerra (president), Ricardo Ogando (ON/MCTIC), Rafaelli Coutinho (CEFET/RJ), Ribamar R. de R. dos Reis (UFRJ), Ronaldo Ribeiro Goldschmidt (IME/RJ) Day/Time: December 10, 2020 / 14h Room: https://meet.google.com/pjw-ffxq-xkk Abstract: In Astronomy it has become common […] Continue reading →

Dissertation defense (December 11, 2020): Daniel Ferreira de Oliveira

 Student: Daniel Ferreira de Oliveira Title: RioGraphX: a Portal to support research in Spectral Graph Theory Advisors: Leonardo Silva de Lima (advisor), Eduardo Bezerra da Silva (co-advisor) Committee: Leonardo Silva de Lima (president), Eduardo Bezerra da Silva (CEFET/RJ), Rafaelli de Carvalho Coutinho (CEFET/RJ), Virgínia Maria Rodrigues (UFGRS), Claudia Marcela Justel (IME) Day/Time: December 11, 2020 […] Continue reading →

Dissertation defense (December 17, 2020): Luciana Escobar Gonçalves Vignoli

 Student: Luciana Escobar Gonçalves Vignoli Title: Comparative Analysis of Methods for Events Detecting in Time Series Advisors: Laura silva de Assis (advisor) e Eduardo Soares Ogasawara (co-advisor) Committee:  Laura Silva de Assis (president), Eduardo Soares Ogasawara (CEFET/RJ), Rafaelli de Carvalho Coutinho (CEFET/RJ), Fábio André Machado Porto (LNCC) Day/time: December 17, 2020 / 14h Room: https://meet.google.com/vtr-zogo-cny Abstract: […] Continue reading →

Dissertation defense (December 02, 2020): Jomar Ferreira Monsores

 Student: Jomar Ferreira Monsores Title: Environment Based on Robotic Tool for Educational Assistance of Students with Dyslexia Advisor: João Roberto de Toledo Quadros Committee: João Roberto de Toledo Quadros (president), Eduardo Soares Ogasawara (CEFET/RJ), Patrícia Grasel da Silva (IFRJ) Day/Time: December 02, 2020 / 10h30min. Room: meet.google.com/qdt-pcdb-dng Abstract: A robotics environment, aimed at helping people […] Continue reading →

Dissertation defense (November 25, 2020): Augusto Magalhães Pinto de Mendonça

 Student: Augusto Magalhães Pinto de Mendonça Title: Districting Problem Applied to  Meter Reading Problem in Service Networks Advisors: Laura Silva de Assis (advisor), Luis Domingues Tomé Jardim Tarrataca (co-advisor) Committee: Laura Silva de Assis (president), Luis Domingues Tomé Jardim Tarrataca (CEFET/RJ), Diego Nunes Brandão (CEFET/RJ), Fábio Luiz Usberti (IC – UNICAMP) Day/hora: November 25, 2020 / […] Continue reading →

Dissertation defense (November 23, 2020): Marcello Alberto Soares Serqueira

 Student: Marcello Alberto Soares Serqueira Title: HBRKGA: A Population-based Hybrid Approach to Hyperparameter Optimization for Neural Networks Advisor: Eduardo Bezerra da Silva (advisor), Pedro Henrique González Silva (co-advisor). Committee: Eduardo Bezerra da Silva (president),  Pedro Henrique González Silva (CEFET/RJ), Diego Brandão (CEFET/RJ), Igor Machado Coelho (UFF). Day/Time: November 23, 2020 / 14h Room: https://meet.google.com/xjd-mbbe-jsr Abstract: […] Continue reading →

Dissertation defense (October 22, 2020): Gustavo Pacheco Epifanio

 Student: Gustavo Pacheco Epifanio Title: Switch Allocation Problem in Power Distribution System with Distribution Generation Advisor: Laura Silva de Assis Committee: Laura Silva de Assis (President), Diego Barreto Haddad (CEFET/RJ), José Frederico Vizcaino González (FEG/UNESP) e Christiano Lyra Filho (FEEC/UNICAMP) Day/Time: October 22, 2020 / 14h Room: meet.google.com/bkx-zbcf-yzi Abstract: This research has the objective of […] Continue reading →

Dissertation defense (September 28, 2020): Ellen Paixão Silva

 Student: Ellen Paixão Silva Title: The influence of multissensory media in dyslexic children learning Advisors: Joel André Ferreira dos Santos (advisor) Silva e Glauco Amorim (co-advisor) Committee: Joel André Ferreira dos Santos (president), Glauco Amorim (CEFET/RJ), Gustavo Guedes (CEFET/RJ), Renata Mousinho (UFRJ) e Maria da Graça Campos Pimentel (USP) Day/Time: September 28, 2020 / 19h Room: […] Continue reading →

Dissertation defense (September 23, 2020): Adalberto Andrade

 Student:  Adalberto Andrade Title: Exploring data analysis to empower forecasting of global fertilizer consumption Advisors: Pedro Henrique González Silva (advisor) and Eduardo Soares Ogasawara (co-advisor) Committee: Pedro Henrique González Silva (president), Eduardo Soares Ogasawara (CEFET/RJ), Eduardo Bezerra da Silva (CEFET/RJ), Cristina Gomes de Souza (CEFET/RJ) e Igor Machado Coelho (UFF) Day/Time: September 23, 2020 / […] Continue reading →

Dissertation defense (August 14, 2020): Thiago da Silva Pereira

 Student:  Thiago da Silva Pereira Title: Hot-Deck Data Imputation: a comparison among ensemble methods Advisors:  Jorge de Abreu Soares (advisor), Eduardo Bezerra da Silva (CEFET/RJ) (co-advisor). Committee: Jorge de Abreu Soares (president), Eduardo Bezerra da Silva (CEFET/RJ), Diego Nunes Brandão (CEFET/RJ), Ronaldo Ribeiro Goldschmidt (IME) Day/Time: August 14, 2020 / 15h. Room: meet.google.com/mtr-vmkq-wrw Abstract: Preprocessing […] Continue reading →

Dissertation defense (August 12, 2020): Aíquis Rodrigues Gomes

 Student: Aíquis Rodrigues Gomes Title:Towards Publication of Open Government Data as Linked Open Data using an ontology-based approach Advisor: Kele Teixeira Belloze Committee: Kele Teixeira Belloze (president), Laura Silva de Assis (CEFET/RJ), Maria Claudia Reis Cavalcanti (IME) Day/Time: August 12, 2020 / 14h Room: meet.google.com/vmx-bzig-jbt Abstract: Governments are significant producers and publishers of data and […] Continue reading →

Dissertation defense (July 22, 2020): Alan Rodrigues Fontoura

 Student: Alan Rodrigues Fontoura Title: A Deep Reinforcement Learning Approach to Asset-Liability Management Advisors: Eduardo Bezerra da Silva (advisor) e Diego Barreto Haddad (CEFET/RJ) (co-advisor). Committee: Eduardo Bezerra da Silva (president), Diego Barreto Haddad (CEFET/RJ), Laura Silva de Assis (CEFET/RJ) e Aline Marins Paes Carvalho (UFF) Day/Time: July 22, 2020 / 14h Room: meet.google.com/jox-chim-syy Abstract: Asset-Liability Management (ALM) […] Continue reading →

Dissertation defense (July 20, 2020): Rafaela de Castro do Nascimento

 Student: Rafaela de Castro do Nascimento Title: STConvS2S: Spatiotemporal Convolutional Sequence to Sequence Network for Weather Forecasting Advisors: Eduardo Bezerra (advisor), Fábio Porto (co-advisor) Committee: Eduardo Bezerra (president), Fábio Porto (LNCC), Eduardo Ogasawara (CEFET/RJ),  José Antônio Fernandes de Macêdo (UFC), Yania Molina Souto (LNCC) Day/Time: July 20, 2020 / 14h Room: https://meet.google.com/znj-ppnh-yyg Abstract: Applying machine […] Continue reading →

Dissertation defense (May 5, 2020): Gustavo Alexandre Sousa Santos

 Student: Gustavo Alexandre Sousa Santos Title: EvolveDTree: A system of the Educational Data Mining based on Decision Tree and Genetic Algorithm to classify Dropout in Higher Education Advisors: Diego Nunes Brandão (advisor), Luis Domingues Tomé Jardim Tarrataca (CEFET/RJ) (co-advisor) Committee: Diego Nunes Brandão (president), Luis Domingues Tomé Jardim Tarrataca (CEFET/RJ), Diego Barreto Haddad (CEFET/RJ), Eduardo […] Continue reading →