activity
20052025
most citedChurn Prediction in Mobile Social Games: Towards a Complete Assessment Using Survival Ensembles

98 citations · 477 across the 25 of their papers we have counts for

collaborators

25 papers

cs.CY2025

Data-Driven Approach to Capitation Reform in Rwanda

Babaniyi Olaniyi, Ina Kalisa, Ana Fernández del Río +9

As part of Rwanda's transition toward universal health coverage, the national Community-Based Health Insurance (CBHI) scheme is moving from retrospective fee-for-service reimbursem…

cs.LG2024★ 29 cited

The Digital Transformation in Health: How AI Can Improve the Performance of Health Systems

África Periáñez, Ana Fernández del Río, Ivan Nazarov +4

Mobile health has the potential to revolutionize health care delivery and patient engagement. In this work, we discuss how integrating Artificial Intelligence into digital health a…

cs.LG2024

Adaptive User Journeys in Pharma E-Commerce with Reinforcement Learning: Insights from SwipeRx

Ana Fernández del Río, Michael Brennan Leong, Paulo Saraiva +5

This paper introduces a reinforcement learning (RL) platform that enhances end-to-end user journeys in healthcare digital tools through personalization. We explore a case study wit…

cs.LG2024

Adaptive Behavioral AI: Reinforcement Learning to Enhance Pharmacy Services

Ana Fernández del Río, Michael Brennan Leong, Paulo Saraiva +5

Pharmacies are critical in healthcare systems, particularly in low- and middle-income countries. Procuring pharmacists with the right behavioral interventions or nudges can enhance…

cs.LG2024

Optimizing HIV Patient Engagement with Reinforcement Learning in Resource-Limited Settings

África Periáñez, Kathrin Schmitz, Lazola Makhupula +6

By providing evidence-based clinical decision support, digital tools and electronic health records can revolutionize patient management, especially in resource-poor settings where…

stat.ML2023★ 1 cited

Synthetic Data Generator for Adaptive Interventions in Global Health

Aditya Rastogi, Juan Francisco Garamendi, Ana Fernández del Río +4

Artificial Intelligence and digital health have the potential to transform global health. However, having access to representative data to test and validate algorithms in realistic…

stat.ML2023

Adaptive Interventions for Global Health: A Case Study of Malaria

África Periáñez, Andrew Trister, Madhav Nekkar +2

Malaria can be prevented, diagnosed, and treated; however, every year, there are more than 200 million cases and 200.000 preventable deaths. Malaria remains a pressing public healt…

cs.LG2022

Actionable Recourse via GANs for Mobile Health

Jennifer Chien, Anna Guitart, Ana Fernandez del Rio +2

Mobile health apps provide a unique means of collecting data that can be used to deliver adaptive interventions.The predicted outcomes considerably influence the selection of such…

stat.ML2022★ 11 cited

User Engagement in Mobile Health Applications

Babaniyi Yusuf Olaniyi, Ana Fernández del Río, África Periáñez +1

Mobile health apps are revolutionizing the healthcare ecosystem by improving communication, efficiency, and quality of service. In low- and middle-income countries, they also play…

cs.LG2021

A Data-Centric Behavioral Machine Learning Platform to Reduce Health Inequalities

Dexian Tang, Guillem Francès, África Periáñez

Providing front-line health workers in low- and middle- income countries with recommendations and predictions to improve health outcomes can have a tremendous impact on reducing he…

stat.ML2021

A Recommendation System to Enhance Midwives' Capacities in Low-Income Countries

Anna Guitart, Afsaneh Heydari, Eniola Olaleye +4

Maternal and child mortality is a public health problem that disproportionately affects low- and middle-income countries. Every day, 800 women and 6,700 newborns die from complicat…

stat.ML2021★ 7 cited

Midwifery Learning and Forecasting: Predicting Content Demand with User-Generated Logs

Anna Guitart, Ana Fernández del Río, África Periáñez +1

Every day, 800 women and 6,700 newborns die from complications related to pregnancy or childbirth. A well-trained midwife can prevent most of these maternal and newborn deaths. Dat…

stat.AP2020★ 13 cited

A Time Series Approach To Player Churn and Conversion in Videogames

Ana Fernández del Río, Anna Guitart, África Periáñez

Players of a free-to-play game are divided into three main groups: non-paying active users, paying active users and inactive users. A State Space time series approach is then used…

stat.ML2019★ 6 cited

Understanding Player Engagement and In-Game Purchasing Behavior with Ensemble Learning

Anna Guitart, Ana Fernández del Río, África Periáñez

As video games attract more and more players, the major challenge for game studios is to retain them. We present a deep behavioral analysis of churn (game abandonment) and what we…

cs.LG2019★ 7 cited

Profiling Players with Engagement Predictions

Ana Fernández del Río, Pei Pei Chen, África Periáñez

The possibility of using player engagement predictions to profile high spending video game users is explored. In particular, individual-player survival curves in terms of days afte…

stat.ML2019★ 12 cited

From Non-Paying to Premium: Predicting User Conversion in Video Games with Ensemble Learning

Anna Guitart, Shi Hui Tan, Ana Fernández del Río +2

Retaining premium players is key to the success of free-to-play games, but most of them do not start purchasing right after joining the game. By exploiting the exceptionally rich d…

stat.ML2019★ 14 cited

The Winning Solution to the IEEE CIG 2017 Game Data Mining Competition

Anna Guitart, Pei Pei Chen, África Periáñez

Machine learning competitions such as those organized by Kaggle or KDD represent a useful benchmark for data science research. In this work, we present our winning solution to the…

cs.CY2018★ 56 cited

Customer Lifetime Value in Video Games Using Deep Learning and Parametric Models

Pei Pei Chen, Anna Guitart, Ana Fernández del Río +1

Nowadays, video game developers record every virtual action performed by their players. As each player can remain in the game for years, this results in an exceptionally rich datas…

stat.ML2018★ 48 cited

A Machine-Learning Item Recommendation System for Video Games

Paul Bertens, Anna Guitart, Pei Pei Chen +1

Video-game players generate huge amounts of data, as everything they do within a game is recorded. In particular, among all the stored actions and behaviors, there is information o…

cs.DB2018★ 35 cited

Game Data Mining Competition on Churn Prediction and Survival Analysis using Commercial Game Log Data

EunJo Lee, Yoonjae Jang, DuMim Yoon +14

Game companies avoid sharing their game data with external researchers. Only a few research groups have been granted limited access to game data so far. The reluctance of these com…

stat.ML2017★ 30 cited

Discovering Playing Patterns: Time Series Clustering of Free-To-Play Game Data

Alain Saas, Anna Guitart, África Periáñez

The classification of time series data is a challenge common to all data-driven fields. However, there is no agreement about which are the most efficient techniques to group unlabe…

stat.ML2017★ 98 cited

Churn Prediction in Mobile Social Games: Towards a Complete Assessment Using Survival Ensembles

África Periáñez, Alain Saas, Anna Guitart +1

Reducing user attrition, i.e. churn, is a broad challenge faced by several industries. In mobile social games, decreasing churn is decisive to increase player retention and rise re…

stat.ML2017★ 45 cited

Games and Big Data: A Scalable Multi-Dimensional Churn Prediction Model

Paul Bertens, Anna Guitart, África Periáñez

The emergence of mobile games has caused a paradigm shift in the video-game industry. Game developers now have at their disposal a plethora of information on their players, and thu…

stat.ML2017★ 5 cited

Forecasting Player Behavioral Data and Simulating in-Game Events

Anna Guitart, Pei Pei Chen, Paul Bertens +1

Understanding player behavior is fundamental in game data science. Video games evolve as players interact with the game, so being able to foresee player experience would help to en…