Search Results for author: Hojjat Salehinejad

Found 22 papers, 4 papers with code

Hypertension Detection From High-Dimensional Representation of Photoplethysmogram Signals

1 code implementation31 Jul 2023 Navid Hasanzadeh, Shahrokh Valaee, Hojjat Salehinejad

Although some studies suggest a relationship between blood pressure and certain vital signals, such as Photoplethysmogram (PPG), reliable generalization of the proposed blood pressure estimation methods is not yet guaranteed.

Hypertension detection Time Series

S-Rocket: Selective Random Convolution Kernels for Time Series Classification

1 code implementation7 Mar 2022 Hojjat Salehinejad, Yang Wang, Yuanhao Yu, Tang Jin, Shahrokh Valaee

A population-based optimization algorithm evolves the population in order to find a best state vector which minimizes the number of active kernels while maximizing the accuracy of the classifier.

Combinatorial Optimization regression +3

A Framework For Pruning Deep Neural Networks Using Energy-Based Models

no code implementations25 Feb 2021 Hojjat Salehinejad, Shahrokh Valaee

A typical deep neural network (DNN) has a large number of trainable parameters.

Pruning of Convolutional Neural Networks Using Ising Energy Model

1 code implementation10 Feb 2021 Hojjat Salehinejad, Shahrokh Valaee

Pruning is one of the major methods to compress deep neural networks.

A Real-World Demonstration of Machine Learning Generalizability: Intracranial Hemorrhage Detection on Head CT

no code implementations9 Feb 2021 Hojjat Salehinejad, Jumpei Kitamura, Noah Ditkofsky, Amy Lin, Aditya Bharatha, Suradech Suthiphosuwan, Hui-Ming Lin, Jefferson R. Wilson, Muhammad Mamdani, Errol Colak

An ML model was trained using 21, 784 scans from the RSNA Intracranial Hemorrhage CT dataset while generalizability was evaluated using an external validation dataset obtained from our busy trauma and neurosurgical center.

BIG-bench Machine Learning Computed Tomography (CT) +1

EDropout: Energy-Based Dropout and Pruning of Deep Neural Networks

2 code implementations7 Jun 2020 Hojjat Salehinejad, Shahrokh Valaee

The energy-based model stochastically evolves the population to find states with lower energy loss.

Survey of Dropout Methods for Deep Neural Networks

no code implementations25 Apr 2019 Alex Labach, Hojjat Salehinejad, Shahrokh Valaee

Dropout methods are a family of stochastic techniques used in neural network training or inference that have generated significant research interest and are widely used in practice.

Model Compression

Ising-Dropout: A Regularization Method for Training and Compression of Deep Neural Networks

no code implementations7 Feb 2019 Hojjat Salehinejad, Shahrokh Valaee

In this paper, we propose an adaptive technique to wisely drop the visible and hidden units in a deep neural network using Ising energy of the network.

General Classification

Recent Advances in Recurrent Neural Networks

no code implementations29 Dec 2017 Hojjat Salehinejad, Sharan Sankar, Joseph Barfett, Errol Colak, Shahrokh Valaee

Recurrent neural networks (RNNs) are capable of learning features and long term dependencies from sequential and time-series data.

Time Series Time Series Analysis

Opposition based Ensemble Micro Differential Evolution

no code implementations8 Sep 2017 Hojjat Salehinejad, Shahryar Rahnamayan, Hamid. R. Tizhoosh

Differential evolution (DE) algorithm with a small population size is called Micro-DE (MDE).

Benchmarking

Image Augmentation using Radial Transform for Training Deep Neural Networks

no code implementations14 Aug 2017 Hojjat Salehinejad, Shahrokh Valaee, Timothy Dowdell, Joseph Barfett

We propose a sampling method based on the radial transform in a polar coordinate system for image augmentation to facilitate the training of deep learning models from limited source data.

Image Augmentation

Learning Over Long Time Lags

no code implementations13 Feb 2016 Hojjat Salehinejad

This paper provides a fundamental review on RNNs and long short term memory (LSTM) model.

Time Series Time Series Analysis

Diversity Enhancement for Micro-Differential Evolution

no code implementations25 Dec 2015 Hojjat Salehinejad, Shahryar Rahnamayan, Hamid. R. Tizhoosh

Furthermore, comprehensive comparative simulations and analysis on performance of the MDE algorithms over various mutation schemes, population sizes, problem types (i. e. uni-modal, multi-modal, and composite), problem dimensionalities, and mutation factor ranges are conducted by considering population diversity analysis for stagnation and trapping in local optimum situations.

Deep Recurrent Neural Networks for Sequential Phenotype Prediction in Genomics

no code implementations9 Nov 2015 Farhad Pouladi, Hojjat Salehinejad, Amir Mohammad Gilani

In analyzing of modern biological data, we are often dealing with ill-posed problems and missing data, mostly due to high dimensionality and multicollinearity of the dataset.

Imputation

Toward Smart Power Grids: Communication Network Design for Power Grids Synchronization

no code implementations28 Apr 2015 Hojjat Salehinejad, Farhad Pouladi, Siamak Talebi

In smart power grids, keeping the synchronicity of generators and the corresponding controls is of great importance.

Combined A*-Ants Algorithm: A New Multi-Parameter Vehicle Navigation Scheme

no code implementations28 Apr 2015 Hojjat Salehinejad, Hossein Nezamabadi-pour, Saeid Saryazdi, Fereydoun Farrahi-Moghaddam

In this paper a multi-parameter A*(A- star)-ants based algorithm is proposed in order to find the best optimized multi-parameter path between two desired points in regions.

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