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Nima Sammaknejad

Researcher at University of Alberta

Publications -  7
Citations -  222

Nima Sammaknejad is an academic researcher from University of Alberta. The author has contributed to research in topics: Hidden Markov model & Expectation–maximization algorithm. The author has an hindex of 6, co-authored 7 publications receiving 152 citations. Previous affiliations of Nima Sammaknejad include Corning Inc..

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A review of the Expectation Maximization algorithm in data-driven process identification

TL;DR: A review on applications of the EM algorithm to address missing variables and in ill conditioned problems is provided and future applications of EM algorithm as well as some open problems are provided.
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Approaches to robust process identification: A review and tutorial of probabilistic methods

TL;DR: A general introduction to the probabilistic methods for robust identification is provided, the main steps involved in the development of models are illustrated, and the related literature is reviewed.
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Operating condition diagnosis based on HMM with adaptive transition probabilities in presence of missing observations

TL;DR: In this paper, a new approach for modeling and monitoring of multivariate processes in presence of faulty and missing observations is introduced, which is assumed that operating modes of the process can transit to each other following a Markov chain model.
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A novel approach to process operating mode diagnosis using conditional random fields in the presence of missing data

TL;DR: To deal with the missing measurement problem that commonly occurs in industrial datasets, a marginalized CRF framework is proposed in this paper and the related inference algorithms are developed under this newly designed framework.
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Robust Diagnosis of Operating Mode Based on Time-Varying Hidden Markov Models

TL;DR: A robust approach to process monitoring and diagnosis based on hidden Markov models with time-varying transition probabilities with superior performance is proposed.