Diogo Pacheco

Postdoctoral Fellow at the Center for Complex Networks and Systems Research at Indiana University, Bloomington.

Welcome / Bem-Vindo.

My name is Diogo F. Pacheco and I am passionate by data. I am a Postdoctoral Fellow at the Center for Complex Networks and Systems Research at Indiana University, Bloomington--under the supervision of Fil Menczer and Alessandro Flammini. I am particularly interested in computational social science and modeling complex social behavior, i.e. combining the expertise of social, cognitive, and STEM scientists to develop tools to enhance our understanding about society. Previously, I studied computational intelligence and multi-objective optimization during my masters studies (2006-2008). At that time, deep learning did not exist as a buzzword yet, but artificial neural networks were one of the cores of my research, towards a decision support system designed for sugarcane harvest. After I graduated, I left academia to work for 5 years in the industry. I started my Ph.D. in 2013 at Florida Institute of Technology, advised by Prof. Ronaldo Menezes and co-supervision of Prof. Fernando Buarque, focusing on the exploration of social media data via the examination of the digital footprints as a proxy for understanding human behavior. My main research contribution was to propose a data-driven methodology to characterize users based on the attention given by them to a set of entities. The aggregation of these individual characterizations enable us: to characterize entities and places, to extract useful information regarding their relationship, and to correlate them with socio-economic indicators. I applied this methodology, using Twitter data, to study the characteristics of language spreading worldwide, the organ donation awareness in the US, and the role of supporters in the football characterization. In addition, we proposed the use of social media data as an estimator for social disorganization, showing the correlation between diversity of football supporters and crime in the UK. In the end of my PhD, I worked with human mobility models and information theory to investigate the impacts of predictability under partial information--a project in collaboration with Dr. Gourab Ghoshal at University of Rochester. I am also member of BioComplex Lab and I colaborate as an invited researcher of Computational Intelligence Research Group at University of Pernambuco. Here, you can find my publications and curriculum vitae.

Brazilian football clubs clustered based on supporters. Organs characterization. Manuscript under revision Football clubs characterization. Twitter movements for FIFA 2014 World Cup. Football and poverty correlations. Manuscript under revision Football and crime correlations. Manuscript under revision Media bias in US newspapers and the collaboration in Senate. US States characterized in organ donation context. Manuscript under revision Cartograms based on Twitter behavior during FIFA World Cup.
Football and poverty correlations. Manuscript under preparation.
See more at Language from Twitter.

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Publications


The Influence of the Circadian and Ultradian Rhythms to Human Mobility: Empirical Evidences from Location-Based Check-Ins
BARBOSA, Hugo; OLIVEIRA, Marcos; PACHECO, Diogo F.; MENEZES, Ronaldo; GHOSHAL, Gourab . The Influence of the Circadian and Ultradian Rhythms to Human Mobility: Empirical Evidences from Location-Based Check-Ins. In: NERCCS 2018: First Northeast Regional Conference on Complex Systems, Binghamton, NY, USA, April 12-13, 2018 (to appear).
Download: PDF, Presentation, bib, Research Gate

Sensing Language Relationships from Social Media
PACHECO, Diogo F.; SAHA, Priya; LIMA NETO, F. B.; MENEZES, R. . Sensing Language Relationships from Social Media. In: 2017 IEEE SmartWorld, Ubiquitous Intelligence and Computing, Advanced and Trusted Computed, Scalable Computing and Communications, Cloud and Big Data Computing, Internet of People and Smart City, August 4-8, 2017.
Download: PDF, Presentation, bib, Research Gate

Characterizing Organ Donation Awareness from Social Media
PACHECO, Diogo F.; PINHEIRO, Diego; CADEIRAS, Martin; MENEZES, Ronaldo. Characterizing Organ Donation Awareness from Social Media. In: Data Engineering Workshops (ICDEW), 2017 IEEE 33rd International Conference on, San Diego, California, USA, April 2017.
Download: PDF, Presentation, bib, Research Gate

Using Social Media to Assess Neighborhood Social Disorganization: A Case Study in the United Kingdom
PACHECO, Diogo F.; OLIVEIRA, Marcos; MENEZES, Ronaldo. Using Social Media to Assess Neighborhood Social Disorganization: A Case Study in the United Kingdom. In: 30th Florida Artificial Intelligence Research Society Conference, Marco Island, Florida, USA, May 2017.
Download: PDF, Presentation, bib, Research Gate

Language as a Measure of Welfare
SAHA, Priya; PACHECO, Diogo F.; MENEZES, Ronaldo. Language as a Measure of Welfare. In: 30th Florida Artificial Intelligence Research Society Conference, Marco Island, Florida, USA, May 2017.
Download: PDF, Presentation, bib, Research Gate

Characterization of Football Supporters from Twitter Conversations
PACHECO, Diogo F.; PINHEIRO, Diego; LIMA NETO, F. B.; RIBEIRO, Eraldo; MENEZES, R. . Characterization of Football Supporters from Twitter Conversations. In: 2016 IEEE/WIC/ACM International Conference on Web Intelligence (WI' 16), October 13-16, 2016.
Download: PDF, bib, Research Gate

Football Conversations: What Twitter Reveals about the 2014 World Cup
PACHECO, Diogo F.; LIMA NETO, F. B.; MOYANO, Luis G.; MENEZES, R. . Football Conversations: What Twitter Reveals about the 2014 World Cup. In: Brazilian Workshop on Social Network Analysis and Mining (CSBC 2015 - BraSNAM), July 21-22, 2015.
Download: PDF, Presentation, Research Gate

Using Interactions in the Quantification of Media Bias
PACHECO, Diogo; ROSE, D; LIMA NETO, F. B.; MENEZES, R. . Using Interactions in the Quantification of Media Bias. In: 2014 ASE BIGDATA/SOCIALCOM/CYBERSECURITY Conference, Stanford University, May 27-31, 2014.
Download: PDF, Presentation, Research Gate

Including Multi-Objective Abilities in the Hybrid Intelligent Suite for Decision Support
PACHECO, Diogo F. ; OLIVEIRA, F. R. S. ; LIMA NETO, F. B. . Including Multi-Objective Abilities in the Hybrid Intelligent Suite for Decision Support. In: 2008 WORLD CONGRESS IN COMPUTATIONAL INTELLIGENCE (IJCNN - INTERNATIONAL JOINT CONFERENCE ON NEURAL NETWORKS), 2008, Hong Kong. Proceedings of 2008 WORLD CONGRESS IN COMPUTATIONAL INTELLIGENCE (IJCNN - INTERNATIONAL JOINT CONFERENCE ON NEURAL NETWORKS), 2008.
Download: Research Gate

A Fair Comparison of Representations, Operators and Algorithms for the Sugarcane Harvest Problem
PACHECO, Diogo F. ; LIMA NETO, F. B. . A Fair Comparison of Representations, Operators and Algorithms for the Sugarcane Harvest Problem. In: IEEE International Conference on Systems, Man, and Cybernetics (SMC2008), 2008, Cingapura. IEEE International Conference on Systems, Man, and Cybernetics, 2008, 2008.
Download: Research Gate

How Preferences Affect Productivity in the Sugarcane Harvest Problem a Comparative Study of a Two-Steps MOEA
PACHECO, Diogo F. ; LUCAS, T. D. P. ; LIMA NETO, F. B. . How Preferences Affect Productivity in the Sugarcane Harvest Problem a Comparative Study of a Two-Steps MOEA. In: 8th International Conference on Hybrid Intelligent Systems (HIS 2008), 2008, Barcelona. International Conference on Hybrid Intelligent Systems, 2008.
Download: Research Gate

How to Obtain Fair Managerial Decisions in Sugar Cane Harvest Using NSGA-II
PACHECO, Diogo F. ; LUCAS, T. D. P. ; LIMA NETO, F. B. . How to Obtain Fair Managerial Decisions in Sugar Cane Harvest Using NSGA-II. In: International Conference on Hybrid Intelligent Systems (HIS`07), 2007, Kaiserslautern, Germany. Proceedings of 7th International Conference on Hybrid Intelligent Systems (HIS`07). Los Alamitos, California: IEEE - Computer Society, 2007. v. P2946. p. 186-191.
Download: Research Gate

Hybrid Intelligent Suite for Decision Support
LIMA NETO, F. B. ; OLIVEIRA, F. R. S. ; PACHECO, Diogo F. . Hybrid Intelligent Suite for Decision Support. In: Seventh International Conference on Intelligent Systems Design and Applications (ISDA), 2007, Rio de Janeiro, Brazil. Proceedings of Seventh International Conference on Intelligent Systems Design and Applications, 2007. p. 94-99.
Download: Research Gate

Hybrid Intelligent Suite For Decision Support in Sugarcane
OLIVEIRA, F. R. S. ; PACHECO, Diogo F. ; LIMA NETO, F. B. . Hybrid Intelligent Suite For Decision Support in Sugarcane. In: 6.Congresso Brasileiro de Agro-Informatica (SBIAgro), 2007, Sao Pedro. Anais do 6.Congresso Brasileiro de Agro-Informatica (SBIAgro), 2007.
Download: Research Gate

A Novel Approach For Wavelenght Assignment In Optical Links Based On Modified Genetic Algorithms
LINS, A. J. C. C. ; CALDAS, B. J. B. ; BASTOS FILHO, C. J. A. ; CARVALHO, D. F. ; PACHECO, Diogo F. ; LIMA NETO, F. B. . A Novel Approach For Wavelenght Assignment In Optical Links Based On Modified Genetic Algorithms. In: I Simposio Brasileiro de Inteligencia Computacional (SBIC), 2007, Florianopolis. Anais do I Simposio Brasileiro de Inteligencia Computacional (SBIC), 2007.

Intelligent Support Decision in Sugar Cane Harvest
OLIVEIRA, F. R. S. ; PACHECO, Diogo F. ; LEONEL, A. ; LIMA NETO, F. B. . Intelligent Support Decision in Sugar Cane Harvest. In: IV WORLD CONGRESS ON COMPUTERS IN AGRICULTURE (WCCA2006), 2006, Orlando. Proceedings of IV World Congress on Computers in Agriculture, 2006.

Utilizacao de Redes Neurais Artificiais em Colheitas de Cana-de-acucar para Predicao de TCC, TCH e Fibra
PACHECO, Diogo F. ; REGUERIA, F. S. ; LIMA NETO, F. B. . Utilizacao de Redes Neurais Artificiais em Colheitas de Cana-de-acucar para Predicao de TCC, TCH e Fibra. ALCOOLbras, Sao Paulo, p. 60 - 63, 01 mar. 2005. (In portuguese)
Download: Research Gate
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Presentations


June 2017, Indianapolis, USA
Using Social Media to Assess Neighborhood Social Disorganization: A Case Study in the United Kingdom. In: 2nd NetCrime - Symposium on the Structure and Mobility of Crime, a NetSci2017 Satellite, June 20, 2017.
Presentation


May 2017, Marco Island, USA
Language as a Measure of Welfare. In: 30th Florida Artificial Intelligence Research Society Conference (FLAIRS), May 22-24, 2017.
Presentation


May 2017, Marco Island, USA
Using Social Media to Assess Neighborhood Social Disorganization: A Case Study in the United Kingdom. In: 30th Florida Artificial Intelligence Research Society Conference (FLAIRS), May 22-24, 2017.
Presentation


July 2015, Recife, Brazil
Football Conversations: What Twitter Reveals about the 2014 World Cup. In: Brazilian Workshop on Social Network Analysis and Mining (CSBC 2015 - BraSNAM), July 21-22, 2015.
Presentation

January 2015, Rio de Janeiro, Brazil
Dynamics of Fans Borders During 2014 FIFA World Cup. In: NetScix 2015: International School and Conference on Network Science.
Presentation

May 2014, Stanford, USA
Using Interactions in the Quantification of Media Bias. In: 2014 ASE BIGDATA/SOCIALCOM/CYBERSECURITY Conference, Stanford University, May 27-31, 2014.
Presentation

September 2008, Barcelona, Spain
How Preferences Affect Productivity in the Sugarcane Harvest Problem a Comparative Study of a Two-Steps MOEA. In: 8th International Conference on Hybrid Intelligent Systems (HIS 2008).

May 2008, Hong Kong
Including Multi-Objective Abilities in the Hybrid Intelligent Suite for Decision Support. In: 2008 WORLD CONGRESS IN COMPUTATIONAL INTELLIGENCE (IJCNN - INTERNATIONAL JOINT CONFERENCE ON NEURAL NETWORKS).
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Education

Doctorate

Dissertation, December 2017, FIT - Melbourne, USA
Information Densification of Social Constructs via Behavior Analysis of Social Media Users - A Study on Twitter
Download

Validation presentation, May 2017, FIT - Melbourne, USA
I have results!
Presentation

Proposal exam, August 2016, FIT - Melbourne, USA
On the Relation Between Social Activities and Socio-Economic Structures
Presentation

Depth exam, February 2016, FIT - Melbourne, USA
On the Relation Between Social Activities and Socio-Economic Structures
Presentation

Masters

Thesis, June 2008, UPE - Recife, Brazil
An Evolutionary Multi-Objective Approach to Decision Support in Sugarcane Harvest (in portuguese)
PDF, Research Gate

Bachelors

Thesis, May 2006, UPE - Recife, Brazil
Decision Support in Intelligent Systems for Agricultural Crops (in portuguese)
PDF
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Get in touch.

If you have comments, doubts or if you want to collaborate, send me a message.

Contact Information

Email: diogofpacheco [@] gmail

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