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Celia Cintas

7 accepted papers

2024

Using Causal Inference to Investigate Contraceptive Discontinuation in Sub-Saharan Africa

IJCAI 2024poster

Discontinuation rates vary by family planning method and across socio-economic contexts. Understanding these variations and their causes is paramount for developing and implementing policies aimed at curbing discontinuation rates. Randomized controlled trials (RCTs) are ideal for obtaining this info…

2023

IberianVoxel: Automatic Completion of Iberian Ceramics for Cultural Heritage Studies

IJCAI 2023poster

Accurate completion of archaeological artifacts is a critical aspect in several archaeological studies, including documentation of variations in style, inference of chronological and ethnic groups, and trading routes trends, among many others. However, most available pottery is fragmented, leading t…

2023

Spatially Constrained Adversarial Attack Detection and Localization in the Representation Space of Optical Flow Networks

IJCAI 2023poster

Optical flow estimation have shown significant improvements with advances in deep neural networks. However, these flow networks have recently been shown to be vulnerable to patch-based adversarial attacks, which poses security risks in real-world applications, such as self-driving cars and robotics.…

Cited by 7SourcePDFScholar
2022

Towards Creativity Characterization of Generative Models via Group-Based Subset Scanning

IJCAI 2022poster

Deep generative models, such as Variational Autoencoders (VAEs) and Generative Adversarial Networks (GANs), have been employed widely in computational creativity research. However, such models discourage out-of-distribution generation to avoid spurious sample generation, thereby limiting their creat…

Cited by 4SourcePDFScholar
2020

Decision Platform for Pattern Discovery and Causal Effect Estimation in Contraceptive Discontinuation

IJCAI 2020poster

Contraceptive use improves the health of women and children in several ways, yet data shows high rates of discontinuation which is not well understood. We introduce an AI-based decision platform capable of analyzing event data to identify patterns of contraceptive uptake that are unique to a subpopu…

Cited by 0SourcePDFScholar
2020

Detecting Adversarial Attacks via Subset Scanning of Autoencoder Activations and Reconstruction Error

IJCAI 2020poster

Reliably detecting attacks in a given set of inputs is of high practical relevance because of the vulnerability of neural networks to adversarial examples. These altered inputs create a security risk in applications with real-world consequences, such as self-driving cars, robotics and financial ser…

Cited by 0SourcePDFScholar
2020

Preservation of Anomalous Subgroups On Variational Autoencoder Transformed Data

ICASSP 2020accepted

We investigate the effect of variational autoencoder (VAE) based data anonymization and its ability to preserve anomalous subgroup properties. We present a Utility Guaranteed Deep Privacy (UGDP) system which casts existing anomalous pattern detection methods as a new utility measure for data synthes…

Cited by 0SourceScholar