no code implementations • 1 Nov 2024 • Yousef El-Laham, Zhongchang Sun, Haibei Zhu, Tucker Balch, Svitlana Vyetrenko
We develop two methodologies for modeling and estimating change points in time-series data with distribution shifts.
no code implementations • 31 Oct 2024 • Xiaokun Zhao, Marija Iloska, Yousef El-Laham, Mónica F. Bugallo
A simple approach for addressing this problem is to augment the unknown static parameters as auxiliary states that are jointly estimated with the time-varying parameters of interest.
no code implementations • 7 Jun 2024 • Haibei Zhu, Yousef El-Laham, Elizabeth Fons, Svitlana Vyetrenko
Effective utilization of time series data is often constrained by the scarcity of data quantity that reflects complex dynamics, especially under the condition of distributional shifts.
no code implementations • 29 Dec 2023 • Vamsi K. Potluru, Daniel Borrajo, Andrea Coletta, Niccolò Dalmasso, Yousef El-Laham, Elizabeth Fons, Mohsen Ghassemi, Sriram Gopalakrishnan, Vikesh Gosai, Eleonora Kreačić, Ganapathy Mani, Saheed Obitayo, Deepak Paramanand, Natraj Raman, Mikhail Solonin, Srijan Sood, Svitlana Vyetrenko, Haibei Zhu, Manuela Veloso, Tucker Balch
Synthetic data has made tremendous strides in various commercial settings including finance, healthcare, and virtual reality.
no code implementations • 20 Dec 2023 • Zhongchang Sun, Yousef El-Laham, Svitlana Vyetrenko
Given a time series dataset, the proposed method jointly learns the unknown change points and the parameters of distinct neural SDE models corresponding to each change point.
no code implementations • 20 Dec 2023 • Yousef El-Laham, Elizabeth Fons, Dillon Daudert, Svitlana Vyetrenko
Evaluations across diverse regression tasks show that UMAP Mixup is competitive with or outperforms other Mixup variants, show promise for its potential as an effective tool for enhancing the generalization performance of deep learning models.
no code implementations • 3 Jul 2023 • Tom Bamford, Elizabeth Fons, Yousef El-Laham, Svitlana Vyetrenko
Time series imputation remains a significant challenge across many fields due to the potentially significant variability in the type of data being modelled.
no code implementations • 12 Jun 2023 • Yousef El-Laham, Niccolò Dalmasso, Elizabeth Fons, Svitlana Vyetrenko
This work introduces a novel probabilistic deep learning technique called deep Gaussian mixture ensembles (DGMEs), which enables accurate quantification of both epistemic and aleatoric uncertainty.
no code implementations • 17 Nov 2022 • Defu Cao, Yousef El-Laham, Loc Trinh, Svitlana Vyetrenko, Yan Liu
Using the proposed synthetic dataset, we provide a holistic analysis on the forecasting performance of three different state-of-the-art forecasting methods.
no code implementations • 22 Sep 2022 • Yousef El-Laham, Svitlana Vyetrenko
In this work, a novel formulation of time series style transfer is proposed for the purpose of synthetic data generation and enhancement.
no code implementations • 11 Aug 2022 • Elizabeth Fons, Alejandro Sztrajman, Yousef El-Laham, Alexandros Iosifidis, Svitlana Vyetrenko
We show how these networks can be leveraged for the imputation of time series, with applications on both univariate and multivariate data.
no code implementations • 23 Feb 2022 • Günther Koliander, Yousef El-Laham, Petar M. Djurić, Franz Hlawatsch
We discuss three different approaches to fusing pdfs.