Search Results for author: Yousef El-Laham

Found 12 papers, 0 papers with code

Variational Neural Stochastic Differential Equations with Change Points

no code implementations1 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.

Change Point Detection Time Series

Fusion of Information in Multiple Particle Filtering in the Presence of Unknown Static Parameters

no code implementations31 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.

State Space Models

A Language Model-Guided Framework for Mining Time Series with Distributional Shifts

no code implementations7 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.

Language Modelling Time Series +1

Neural Stochastic Differential Equations with Change Points: A Generative Adversarial Approach

no code implementations20 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.

Change Point Detection Time Series

Augment on Manifold: Mixup Regularization with UMAP

no code implementations20 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.

Data Augmentation Deep Learning +1

MADS: Modulated Auto-Decoding SIREN for time series imputation

no code implementations3 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.

Imputation Time Series

Deep Gaussian Mixture Ensembles

no code implementations12 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.

Deep Learning Probabilistic Deep Learning

DSLOB: A Synthetic Limit Order Book Dataset for Benchmarking Forecasting Algorithms under Distributional Shift

no code implementations17 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.

Benchmarking Time Series +1

StyleTime: Style Transfer for Synthetic Time Series Generation

no code implementations22 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.

Data Augmentation Style Transfer +4

HyperTime: Implicit Neural Representation for Time Series

no code implementations11 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.

Data Augmentation Imputation +2

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