Search Results for author: Kayvan Najarian

Found 28 papers, 2 papers with code

Prediction of Oral Food Challenge Outcomes via Ensemble Learning

no code implementations17 Aug 2022 Justin Zhang, Deborah Lee, Kylie Jungles, Diane Shaltis, Kayvan Najarian, Rajan Ravikumar, Georgiana Sanders, Jonathan Gryak

The results of this analysis suggest that ensemble learning has the potential to predict OFC outcomes and reveal relevant clinical factors for further study.

Ensemble Learning Predicting Patient Outcomes +1

A Novel Tropical Geometry-based Interpretable Machine Learning Method: Application in Prognosis of Advanced Heart Failure

no code implementations9 Dec 2021 Heming Yao, Harm Derksen, Jessica R. Golbus, Justin Zhang, Keith D. Aaronson, Jonathan Gryak, Kayvan Najarian

In addition to learning humanly understandable rules from the dataset, existing fuzzy domain knowledge can be easily transferred into the network and used to facilitate model training.

Interpretable Machine Learning

Motion-based Camera Localization System in Colonoscopy Videos

no code implementations3 Dec 2020 Heming Yao, Ryan W. Stidham, Zijun Gao, Jonathan Gryak, Kayvan Najarian

In this study, we propose a camera localization system to estimate the relative location of the camera and classify the colon into anatomical segments.

Camera Localization General Classification +1

Radial basis function kernel optimization for Support Vector Machine classifiers

no code implementations16 Jul 2020 Karl Thurnhofer-Hemsi, Ezequiel López-Rubio, Miguel A. Molina-Cabello, Kayvan Najarian

Experimental results show that OKSVM performs better irrespective of the initial values of the RBF hyperparameter.

Fetal Ultrasound Image Segmentation for Measuring Biometric Parameters Using Multi-Task Deep Learning

no code implementations31 Aug 2019 Zahra Sobhaninia, Shima Rafiei, Ali Emami, Nader Karimi, Kayvan Najarian, Shadrokh Samavi, S. M. Reza Soroushmehr

Ultrasound imaging is a standard examination during pregnancy that can be used for measuring specific biometric parameters towards prenatal diagnosis and estimating gestational age.

Image Segmentation Segmentation +1

An Unsupervised Feature Learning Approach to Reduce False Alarm Rate in ICUs

no code implementations17 Apr 2019 Behzad Ghazanfari, Fatemeh Afghah, Kayvan Najarian, Sajad Mousavi, Jonathan Gryak, James Todd

In this paper, we propose a novel set of high-level features based on unsupervised feature learning technique in order to effectively capture the characteristics of different arrhythmia in electrocardiogram (ECG) signal and differentiate them from irregularity in signals due to different sources of signal disturbances.

Clustering Specificity

ReDMark: Framework for Residual Diffusion Watermarking on Deep Networks

1 code implementation16 Oct 2018 Mahdi Ahmadi, Alireza Norouzi, S. M. Reza Soroushmehr, Nader Karimi, Kayvan Najarian, Shadrokh Samavi, Ali Emami

Due to the rapid growth of machine learning tools and specifically deep networks in various computer vision and image processing areas, application of Convolutional Neural Networks for watermarking have recently emerged.

Multiple Abnormality Detection for Automatic Medical Image Diagnosis Using Bifurcated Convolutional Neural Network

no code implementations16 Sep 2018 Mohsen Hajabdollahi, Reza Esfandiarpoor, Elyas Sabeti, Nader Karimi, Kayvan Najarian, S. M. Reza Soroushmehr, Shadrokh Samavi

In recent years portable medical imaging devices such as capsule endoscopy and digital dermatoscope have been introduced and made the diagnosis procedure easier and more efficient.

Anomaly Detection General Classification +1

Adaptive specular reflection detection and inpainting in colonoscopy video frames

no code implementations23 Feb 2018 Mojtaba Akbari, Majid Mohrekesh, S. M. Reza Soroushmehr, Nader Karimi, Shadrokh Samavi, Kayvan Najarian

In the detection phase, we employ both HSV and RGB color space information for segmentation of specular reflections.

Reversible Image Watermarking for Health Informatics Systems Using Distortion Compensation in Wavelet Domain

no code implementations21 Feb 2018 Hamidreza Zarrabi, Mohsen Hajabdollahi, S. M. Reza Soroushmehr, Nader Karimi, Shadrokh Samavi, Kayvan Najarian

In this study a reversible watermarking is investigated with focusing on increasing the embedding capacity and reducing the distortion in medical images.

Deep Learning in Pharmacogenomics: From Gene Regulation to Patient Stratification

no code implementations25 Jan 2018 Alexandr A. Kalinin, Gerald A. Higgins, Narathip Reamaroon, S. M. Reza Soroushmehr, Ari Allyn-Feuer, Ivo D. Dinov, Kayvan Najarian, Brian D. Athey

This Perspective provides examples of current and future applications of deep learning in pharmacogenomics, including: (1) identification of novel regulatory variants located in noncoding domains and their function as applied to pharmacoepigenomics; (2) patient stratification from medical records; and (3) prediction of drugs, targets, and their interactions.

Vessel Segmentation and Catheter Detection in X-Ray Angiograms Using Superpixels

no code implementations8 Sep 2017 Hamid R. Fazlali, Nader Karimi, S. M. Reza Soroushmehr, Shahram Shirani, Brahmajee. K. Nallamothu, Kevin R. Ward, Shadrokh Samavi, Kayvan Najarian

In this framework we use our catheter detection and tracking method which detects the catheter by finding its ridge in the first frame and traces in other frames by fitting a second order polynomial on it.

Segmentation Superpixels

Adaptive Real-Time Removal of Impulse Noise in Medical Images

no code implementations6 Sep 2017 Zohreh HosseinKhani, Mohsen Hajabdollahi, Nader Karimi, Reza Soroushmehr, Shahram Shirani, Kayvan Najarian, Shadrokh Samavi

In this paper a low complexity de-noising method is proposed that removes the noise by local analysis of the image blocks.

Blind Stereo Image Quality Assessment Inspired by Brain Sensory-Motor Fusion

no code implementations3 Sep 2017 Maryam Karimi, Najmeh Soltanian, Shadrokh Samavi, Nader Karimi, S. M. Reza Soroushmehr, Kayvan Najarian

Then, a stacked neural network model is proposed, which learns the extracted features and accurately evaluates the quality of stereo images.

Image Quality Assessment

A Shapley Value Solution to Game Theoretic-based Feature Reduction in False Alarm Detection

no code implementations5 Dec 2015 Fatemeh Afghah, Abolfazl Razi, Kayvan Najarian

False alarm is one of the main concerns in intensive care units and can result in care disruption, sleep deprivation, and insensitivity of care-givers to alarms.

General Classification

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