no code implementations • 2 Feb 2024 • Valentina Cepeda, Andrés Gómez, Shaoning Han
We consider the problem of learning support vector machines robust to uncertainty.
no code implementations • 31 Oct 2023 • José Daniel Viqueira, Daniel Faílde, Mariamo M. Juane, Andrés Gómez, David Mera
Quantum Recurrent Neural Networks (QRNNs) are robust candidates to model and predict future values in multivariate time series.
no code implementations • 26 Oct 2023 • Nathan Justin, Sina Aghaei, Andrés Gómez, Phebe Vayanos
We consider the problem of learning classification trees that are robust to distribution shifts between training and testing/deployment data.
1 code implementation • 28 Jul 2023 • Patrick Vossler, Sina Aghaei, Nathan Justin, Nathanael Jo, Andrés Gómez, Phebe Vayanos
ODTLearn is an open-source Python package that provides methods for learning optimal decision trees for high-stakes predictive and prescriptive tasks based on the mixed-integer optimization (MIO) framework proposed in Aghaei et al. (2019) and several of its extensions.
no code implementations • 12 Jul 2023 • Andrés Gómez, José Neto
In many applications, when building linear regression models, it is important to account for the presence of outliers, i. e., corrupted input data points.
no code implementations • 26 Jun 2023 • Ryan Cory-Wright, Andrés Gómez
Across a suite of 13 real datasets, a calibrated version of our procedure improves the test set error by an average of 4% compared to cross-validating without confidence adjustment.
1 code implementation • 24 Jan 2022 • Nathanael Jo, Sina Aghaei, Andrés Gómez, Phebe Vayanos
The increasing use of machine learning in high-stakes domains -- where people's livelihoods are impacted -- creates an urgent need for interpretable, fair, and highly accurate algorithms.
no code implementations • 2 Jan 2022 • Linchuan Wei, Alper Atamtürk, Andrés Gómez, Simge Küçükyavuz
We show that a convex hull description of the associated mixed-integer set in an extended space with a quadratic number of additional variables consists of a single positive semidefinite constraint (explicitly stated) and linear constraints.
1 code implementation • 31 Aug 2021 • Nathanael Jo, Sina Aghaei, Andrés Gómez, Phebe Vayanos
We consider the problem of learning an optimal prescriptive tree (i. e., an interpretable treatment assignment policy in the form of a binary tree) of moderate depth, from observational data.
no code implementations • 27 Jul 2021 • Andrés Gómez, Thomas Genevois, Jerome Lussereau, Christian Laugier
However, there is still the challenge to obtain more characteristics from the objects detected in real-time.
3 code implementations • 29 Mar 2021 • Sina Aghaei, Andrés Gómez, Phebe Vayanos
To fill this gap in the literature, we propose an intuitive flow-based MIO formulation for learning optimal binary classification trees.
no code implementations • 19 Apr 2020 • Alper Atamtürk, Andrés Gómez
We give safe screening rules to eliminate variables from regression with $\ell_0$ regularization or cardinality constraint.