Search Results for author: Gregory Darnell

Found 6 papers, 3 papers with code

Latent Temporal Flows for Multivariate Analysis of Wearables Data

no code implementations14 Oct 2022 Magda Amiridi, Gregory Darnell, Sean Jewell

Latent Temporal Flows simultaneously recovers a transformation of the observed sequences into lower-dimensional latent representations via deep autoencoder mappings, and estimates a temporally-conditioned probabilistic model via normalizing flows.

Computational Efficiency Time Series Analysis

PhysioMTL: Personalizing Physiological Patterns using Optimal Transport Multi-Task Regression

1 code implementation19 Mar 2022 Jiacheng Zhu, Gregory Darnell, Agni Kumar, Ding Zhao, Bo Li, XuanLong Nguyen, Shirley You Ren

The proposed method learns an individual-specific predictive model from heterogeneous observations, and enables estimation of an optimal transport map that yields a push forward operation onto the demographic features for each task.

counterfactual Heart Rate Variability +1

LatTe Flows: Latent Temporal Flows for Multivariate Sequence Analysis

no code implementations29 Sep 2021 Magda Amiridi, Gregory Darnell, Sean Jewell

We introduce Latent Temporal Flows (\emph{LatTe-Flows}), a method for probabilistic multivariate time-series analysis tailored for high dimensional systems whose temporal dynamics are driven by variations in a lower-dimensional discriminative subspace.

Time Series Time Series Analysis

Generalizing Variational Autoencoders with Hierarchical Empirical Bayes

1 code implementation20 Jul 2020 Wei Cheng, Gregory Darnell, Sohini Ramachandran, Lorin Crawford

Recent methods have mitigated this issue by deterministically moment-matching an aggregated posterior distribution to an aggregate prior.

Sparse Multi-Output Gaussian Processes for Medical Time Series Prediction

1 code implementation27 Mar 2017 Li-Fang Cheng, Gregory Darnell, Bianca Dumitrascu, Corey Chivers, Michael E Draugelis, Kai Li, Barbara E. Engelhardt

In the scenario of real-time monitoring of hospital patients, high-quality inference of patients' health status using all information available from clinical covariates and lab tests is essential to enable successful medical interventions and improve patient outcomes.

Gaussian Processes Time Series +1

Adaptive Randomized Dimension Reduction on Massive Data

no code implementations13 Apr 2015 Gregory Darnell, Stoyan Georgiev, Sayan Mukherjee, Barbara E. Engelhardt

In this paper we develop an approach for dimension reduction that exploits the assumption of low rank structure in high dimensional data to gain both computational and statistical advantages.

Dimensionality Reduction

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