Search Results for author: Raed Kontar

Found 6 papers, 0 papers with code

On Negative Transfer and Structure of Latent Functions in Multi-output Gaussian Processes

no code implementations6 Apr 2020 Moyan Li, Raed Kontar

The multi-output Gaussian process ($\mathcal{MGP}$) is based on the assumption that outputs share commonalities, however, if this assumption does not hold negative transfer will lead to decreased performance relative to learning outputs independently or in subsets.

Gaussian Processes

The Renyi Gaussian Process: Towards Improved Generalization

no code implementations15 Oct 2019 Xubo Yue, Raed Kontar

We introduce an alternative closed form lower bound on the Gaussian process ($\mathcal{GP}$) likelihood based on the R\'enyi $\alpha$-divergence.

regression

Functional Principal Component Analysis for Extrapolating Multi-stream Longitudinal Data

no code implementations9 Mar 2019 Seokhyun Chung, Raed Kontar

A Gaussian process prior for the FPC scores is then established based on a functional semi-metric that measures similarities between streams of historical units and the in-service unit.

Variational Inference of Joint Models using Multivariate Gaussian Convolution Processes

no code implementations9 Mar 2019 Xubo Yue, Raed Kontar

We present a non-parametric prognostic framework for individualized event prediction based on joint modeling of both longitudinal and time-to-event data.

Variational Inference

Minimizing Negative Transfer of Knowledge in Multivariate Gaussian Processes: A Scalable and Regularized Approach

no code implementations31 Jan 2019 Raed Kontar, Garvesh Raskutti, Shiyu Zhou

The proposed method has excellent scalability when the number of outputs is large and minimizes the negative transfer of knowledge between uncorrelated outputs.

Gaussian Processes

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