218 citations · 886 across the 47 of their papers we have counts for
22 papers · 1 filter
The Value of Big Data for Credit Scoring: Enhancing Financial Inclusion using Mobile Phone Data and Social Network Analytics
María Óskarsdóttir, Cristián Bravo, Carlos Sarraute +2
Credit scoring is without a doubt one of the oldest applications of analytics. In recent years, a multitude of sophisticated classification techniques have been developed to improv…
Credit Scoring for Good: Enhancing Financial Inclusion with Smartphone-Based Microlending
María Óskarsdóttir, Cristián Bravo, Carlos Sarraute +2
Globally, two billion people and more than half of the poorest adults do not use formal financial services. Consequently, there is increased emphasis on developing financial techno…
Social Network Analytics for Churn Prediction in Telco: Model Building, Evaluation and Network Architecture
María Óskarsdóttir, Cristián Bravo, Wouter Verbeke +3
Social network analytics methods are being used in the telecommunication industry to predict customer churn with great success. In particular it has been shown that relational lear…
A Comparative Study of Social Network Classifiers for Predicting Churn in the Telecommunication Industry
Maria Óskarsdóttir, Cristián Bravo, Wouter Verbeke +3
Relational learning in networked data has been shown to be effective in a number of studies. Relational learners, composed of relational classifiers and collective inference method…
Detecting Areas of Potential High Prevalence of Chagas in Argentina
Antonio Vazquez Brust, Tomas Olego, German Rosati +6
A map of potential prevalence of Chagas disease (ChD) with high spatial disaggregation is presented. It aims to detect areas outside the Gran Chaco ecoregion (hyperendemic for the…
Computing Accessibility Metrics for Argentina
Carolina Lang, Tobias Carreira, German Cesar Dima +2
We present a tool to calculate distances and travel times between a set of origins and a set of destinations, using different modes of transport in Argentina. The input data for th…
Segregated interactions in urban and online space
Xiaowen Dong, Alfredo J. Morales, Eaman Jahani +6
Urban income segregation is a widespread phenomenon that challenges societies across the globe. Classical studies on segregation have largely focused on the geographic distribution…
Inference of Demographic Attributes based on Mobile Phone Usage Patterns and Social Network Topology
Carlos Sarraute, Jorge Brea, Javier Burroni +1
Mobile phone usage provides a wealth of information, which can be used to better understand the demographic structure of a population. In this paper, we focus on the population of…
Brief survey of Mobility Analyses based on Mobile Phone Datasets
Carlos Sarraute, Martin Minnoni
This is a brief survey of the research performed by Grandata Labs in collaboration with numerous academic groups around the world on the topic of human mobility. A driving theme in…
Inference of Users Demographic Attributes based on Homophily in Communication Networks
Jorge Brea, Javier Burroni, Carlos Sarraute
Over the past decade, mobile phones have become prevalent in all parts of the world, across all demographic backgrounds. Mobile phones are used by men and women across a wide age r…
Correlations and dynamics of consumption patterns in social-economic networks
Yannick Leo, Márton Karsai, Carlos Sarraute +1
We analyse a coupled dataset collecting the mobile phone communications and bank transactions history of a large number of individuals living in a Latin American country. After map…
The City Pulse of Buenos Aires
Carlos Sarraute, Carolina Lang, Nicolas B. Ponieman +1
Cell phone technology generates massive amounts of data. Although this data has been gathered for billing and logging purposes, today it has a much higher value, because its volume…
Analyzing the Spread of Chagas Disease with Mobile Phone Data
Juan de Monasterio, Alejo Salles, Carolina Lang +4
We use mobile phone records for the analysis of mobility patterns and the detection of possible risk zones of Chagas disease in two Latin American countries. We show that geolocali…
Prepaid or Postpaid? That is the question. Novel Methods of Subscription Type Prediction in Mobile Phone Services
Yongjun Liao, Wei Du, Márton Karsai +3
In this paper we investigate the behavioural differences between mobile phone customers with prepaid and postpaid subscriptions. Our study reveals that (a) postpaid customers are m…
Social Events in a Time-Varying Mobile Phone Graph
Carlos Sarraute, Jorge Brea, Javier Burroni +3
The large-scale study of human mobility has been significantly enhanced over the last decade by the massive use of mobile phones in urban populations. Studying the activity of mobi…
Socioeconomic correlations and stratification in social-communication networks
Yannick Leo, Eric Fleury, J. Ignacio Alvarez-Hamelin +2
The uneven distribution of wealth and individual economic capacities are among the main forces which shape modern societies and arguably bias the emerging social structures. Howeve…
Correlations of consumption patterns in social-economic networks
Yannick Leo, Márton Karsai, Carlos Sarraute +1
We analyze a coupled anonymized dataset collecting the mobile phone communication and bank transactions history of a large number of individuals. After mapping the social structure…
Harnessing Mobile Phone Social Network Topology to Infer Users Demographic Attributes
Jorge Brea, Javier Burroni, Martin Minnoni +1
We study the structure of the social graph of mobile phone users in the country of Mexico, with a focus on demographic attributes of the users (more specifically the users' age). W…
A Study of Age and Gender seen through Mobile Phone Usage Patterns in Mexico
Carlos Sarraute, Pablo Blanc, Javier Burroni
Mobile phone usage provides a wealth of information, which can be used to better understand the demographic structure of a population. In this paper we focus on the population of M…
Evolution of Communities with Focus on Stability
Carlos Sarraute, Gervasio Calderon
Community detection is an important tool for analyzing the social graph of mobile phone users. The problem of finding communities in static graphs has been widely studied. However,…
Evolution of Communities with Focus on Stability (extended abstract)
Carlos Sarraute, Gervasio Calderon
The detection of communities is an important tool used to analyze the social graph of mobile phone users. Within each community, customers are susceptible of attracting new ones, r…
Human Mobility and Predictability enriched by Social Phenomena Information (extended abstract)
Nicolas Ponieman, Alejo Salles, Carlos Sarraute
The information collected by mobile phone operators can be considered as the most detailed information on human mobility across a large part of the population. The study of the dyn…