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Dissertation defense (May 17, 2022): Danielle Fontes de Albuquerque

Student: Danielle Fontes de Albuquerque

Title: Feature Selection in Brazilian higher education data

Advisors: Rafaelli Coutinho (advisor)  and Diego Brandão (CEFET/RJ) (co-advisor)

Committee: Rafaelli Coutinho (president), Diego Brandão (CEFET/RJ), Eduardo Ogasawara (CEFET/RJ), Alessandro Vivas Andrade (UFVJM), Cristiano Maciel (UFMT)

Day/Time: May 17, 2022 / 2:30 p.m.

Room: https://us06web.zoom.us/j/83229649478?pwd=cm90SXRXM1pDN2duWFlLdXlnRjBkUT09

Abstract: Increasingly, the education sector is using its extensive data repositories to aid decision-making within universities. One of the main problems these institutions face is the dropout of students. It is a worrying phenomenon because it causes social and economic losses for both students and society. One way to reduce the impact of dropouts is to identify the possible causes of dropouts using the databases available in the institutions. Educational Data Mining (EDM) is an interdisciplinary area that uses computational and statistical techniques to understand the educational scenario from the databases of educational institutions. Within this area, Feature Selection (FS) is a set of techniques capable of identifying which are the most relevant attributes in a large database and simplifying it so that it is possible to express the information with a smaller volume of data. With this, it is possible to perform analysis on smaller and cleaner databases, which facilitates the problem understanding and improves computational performance in terms of processing time and the quality of the model generated. Furthermore, identifying the most relevant factors is a way to understand the possible causes and consequences of the problem. This work performs a comparative analysis of FS techniques on educational data from CES, provided by the Brazilian government, which gathers information about all higher education students in the country. The goal is to identify what are the main factors involved in higher education dropout and find combinations of FS techniques and classifiers that enhance the quality of the classification. A new approach for FS was also proposed with a Genetic Algorithm (GA) to allow more flexibility and specificity in the educational setting, called FlexAG. The results show that the attributes year of entry, extracurricular activity, and student financing are the most important for the overall base scenario of CES. In addition, the FS techniques can improve the classification performance measures, and reduce the number of attributes and classification time.

Dissertation defense (January 26, 2022): Igor da Silva Morais

 Student: Igor da Silva Morais Title: Hybrid Approaches to the Two-Stage Facility Location Problem Advisors: Pedro Henrique González Silva (advisor)  and Eduardo Bezerra da Silva (CEFET/RJ) (co-advisor) Committee: Pedro Henrique González Silva (president),  Eduardo Bezerra da Silva (CEFET/RJ), Diego Nunes Brandão (CEFET/RJ), Vanessa de Almeida Guimarães (CEFET/RJ), Glaydston Mattos Ribeiro (COPPE/UFRJ) Day/Time: January 26, 2022 […] Continue reading →

Dissertation defense (December 27, 2021): Thiago Rangel Pesset Gonzaga

 Student: Thiago Rangel Pesset Gonzaga Title: STOCHASTIC MODELING OF ONLINE LEARNING OF AN ADAPTIVE LINEAR STRUCTURE IMPLEMENTED IN BLOCKS Advisors: Diego Barreto Haddad (advisor) and Felipe da Rocha Henriques (CEFET/RJ) (co-advisor) Committee: Diego Barreto Haddad (president), Felipe da Rocha Henriques (CEFET/RJ), Eduardo Bezerra da Silva (CEFET/RJ), Tadeu Nagashima Ferreira (UFF). Day/Time: December 27, 2021 / […] Continue reading →

Dissertation defense (December 15, 2021): Davi Bortolotti Batista

 Student: Davi Bortolotti Batista Title: Semantic Segmentation for Automatic Interpretation of Linear Geological Structures Advisors:  Diego Barreto Haddad (advisor) and Gabriel Matos Araujo (CEFET/RJ) (co-advisor). Committee: Diego Barreto Haddad (president), Gabriel Matos Araujo (CEFET/RJ), Douglas de Oliveira Cardoso (CEFET-RJ), Kenji Nose Filho (UFABC), Milena Faria Pinto (CEFET-RJ) and GIlson Antonio Giraldi (LNCC). Day/Time: December 15, […] Continue reading →

Dissertation defense (August 26, 2021): Lucas Giusti Tavares

 Student: Lucas Giusti Tavares Title: Analyzing Flight Delay Prediction Under Concept Drift Advisors: Jorge de Abreu Soares (advisor) and Eduardo Soares Ogasawara (CEFET/RJ) (co-advisor). Committee: Jorge de Abreu Soares (president), Eduardo Soares Ogasawara (CEFET/RJ), Rafaelli de Carvalho Coutinho (CEFET/RJ) e Antônio Tadeu Azevedo Gomes (LNCC). Day/Time: August 26, 2021 / 13h30. Room: https://meet.google.com/zow-fgxq-fte Abstract: Delay […] Continue reading →

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 […] Continue reading →

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 →