Search Results for author: Reza Sameni

Found 21 papers, 7 papers with code

Learning from Two Decades of Blood Pressure Data: Demography-Specific Patterns Across 75 Million Patient Encounters

no code implementations2 Feb 2024 Seyedeh Somayyeh Mousavi, Yuting Guo, Abeed Sarker, Reza Sameni

Hypertension remains a global health concern with a rising prevalence, necessitating effective monitoring and understanding of blood pressure (BP) dynamics.

Leveraging Large Language Models for Analyzing Blood Pressure Variations Across Biological Sex from Scientific Literature

no code implementations2 Feb 2024 Yuting Guo, Seyedeh Somayyeh Mousavi, Reza Sameni, Abeed Sarker

Based on the automatically-extracted information from these articles, we conducted an analysis of the variations of BP values across biological sex.

Language Modelling Large Language Model

Point-of-Care Real-Time Signal Quality for Fetal Doppler Ultrasound Using a Deep Learning Approach

no code implementations15 Nov 2023 Mohsen Motie-Shirazi, Reza Sameni, Peter Rohloff, Nasim Katebi, Gari D. Clifford

In order to provide instant feedback to allow correction of the data at source, a signal quality metric is required that can run in real-time on the mobile phone.

Beyond Convergence: Identifiability of Machine Learning and Deep Learning Models

no code implementations21 Jul 2023 Reza Sameni

However, not all inverse problems in ML are ``identifiable,'' indicating that model parameters may not be uniquely determined from the available data and the data model's input-output relationship.

A Survey on Blood Pressure Measurement Technologies: Addressing Potential Sources of Bias

no code implementations14 Jun 2023 Seyedeh Somayyeh Mousavi, Matthew A. Reyna, Gari D. Clifford, Reza Sameni

Regular blood pressure (BP) monitoring in clinical and ambulatory settings plays a crucial role in the prevention, diagnosis, treatment, and management of cardiovascular diseases.

Bayesian Inference Management

A Data-Driven Gaussian Process Filter for Electrocardiogram Denoising

no code implementations6 Jan 2023 Mircea Dumitru, Qiao Li, Erick Andres Perez Alday, Ali Bahrami Rad, Gari D. Clifford, Reza Sameni

Objective: Gaussian Processes (GP)-based filters, which have been effectively used for various applications including electrocardiogram (ECG) filtering can be computationally demanding and the choice of their hyperparameters is typically ad hoc.

Denoising Gaussian Processes

Mythological Medical Machine Learning: Boosting the Performance of a Deep Learning Medical Data Classifier Using Realistic Physiological Models

no code implementations28 Dec 2021 Ismail Sadiq, Erick A. Perez-Alday, Amit J. Shah, Ali Bahrami Rad, Reza Sameni, Gari D. Clifford

Objective: To determine if a realistic, but computationally efficient model of the electrocardiogram can be used to pre-train a deep neural network (DNN) with a wide range of morphologies and abnormalities specific to a given condition - T-wave Alternans (TWA) as a result of Post-Traumatic Stress Disorder, or PTSD - and significantly boost performance on a small database of rare individuals.

Transfer Learning

Noninvasive Fetal Electrocardiography: Models, Technologies and Algorithms

no code implementations24 Dec 2021 Reza Sameni

The fetal electrocardiogram (fECG) was first recorded from the maternal abdominal surface in the early 1900s.

blind source separation

Real-Time Multi-Level Neonatal Heart and Lung Sound Quality Assessment for Telehealth Applications

1 code implementation29 Sep 2021 Ethan Grooby, Chiranjibi Sitaula, Davood Fattahi, Reza Sameni, Kenneth Tan, Lindsay Zhou, Arrabella King, Ashwin Ramanathan, Atul Malhotra, Guy A. Dumont, Faezeh Marzbanrad

In this study, a new method is proposed to objectively and automatically assess heart and lung signal quality on a 5-level scale in real-time and to assess the effect of signal quality on vital sign estimation.

feature selection Ordinal Classification

Hardware Synthesis of State-Space Equations; Application to FPGA Implementation of Shallow and Deep Neural Networks

1 code implementation15 May 2021 Amir-Hossein Kiamarzi, Pezhman Torabi, Reza Sameni

As a case study, it is shown that state-space systems can be used for the systematic implementation and optimization of NNs (as nonlinear and time-varying dynamic systems).

speech-recognition Speech Recognition

A Hypothesis Testing Approach to Nonstationary Source Separation

no code implementations14 May 2021 Reza Sameni, Christian Jutten

The extraction of nonstationary signals from blind and semi-blind multivariate observations is a recurrent problem.

blind source separation Clustering

Model-based Prediction and Optimal Control of Pandemics by Non-pharmaceutical Interventions

2 code implementations12 Feb 2021 Reza Sameni

The control objective is to prescribe quantifiable NPI strategies at different levels of stringency, which balance between human factors (such as new cases and death rates) and cost of intervention per region/country.

Optimization and Control Populations and Evolution

Deep Sequence Learning for Accurate Gestational Age Estimation from a $\$$25 Doppler Device

no code implementations24 Nov 2020 Nasim Katebi, Reza Sameni, Gari D. Clifford

Assessing fetal development is usually carried out by techniques such as ultrasound imaging, which is generally unavailable in rural areas due to the high cost, maintenance, skills and training needed to operate the devices effectively.

Age Estimation Time Series +1

Mathematical Modeling of Epidemic Diseases; A Case Study of the COVID-19 Coronavirus

2 code implementations25 Mar 2020 Reza Sameni

The outbreak of the Coronavirus COVID-19 has taken the lives of several thousands worldwide and locked-out many countries and regions, with yet unpredictable global consequences.

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