Posts

A collection of all the writings available on this site.

Physionet ECG Waveform Databases Summary

Initialize WFDB Databases Pull all of the PhysioNet WaveForm DataBase collections related to ECG, according to their ECG Archive #!/bin/bash ecg_database_keys=( "aami-ec13" "edb" "ltstdb" "mitdb" "nstdb" "staffiii" "chfdb" "ecgcipa" "ecgdmmld" "ecgrdvq" "ecgiddb" "szdb" "qtdb" "shareedb" "nifeadb" "adfecgdb" "aftdb" "cudb" "iafdb" "ltafdb" "macecgdb" "afdb" "cdb" "ltdb" "vfdb" "nsrdb" "stdb" "svdb" "nifecgdb" "afpdb" "ptbdb" "incartdb" "sddb" "vfdb" ) for db_key in "${ecg_database_keys[@]}" do echo $db_key; if [ -d "$db_key/physionet.org/1.0.0" ]; then echo "\t$db_key/physionet. Read more...

Earl Grey Shortbread Cookies

Summary Information This recipe was modified from the Sugar and Soul - Downton Abbey Earl Grey Shortbread Cookies. Roughly: the lemon glaze was removed; the number of tea bags used was increased; the cooking time was increased. Metric Value Preparation Time 30 minutes Infusing Time 2 hours Cooking Time 20 minutes Total Time 2 hours 50 minutes Servings 120 cookies Cookie Dimensions Width 1cm; Diameter 4cm For equipment, you will need an oven, baking sheets, mixing bowls, and parchment paper. Read more...

Electrocardiogram Machine Learning

This post will be continuously updated throughout the Master's degree research period. The task is to extract utility from a large corpus of electrocardiogram (ECG) data using deep learning (DL) and machine learning (ML). Data is in various formats (paper scans, physiobank WFDB, etc.) Dataset may be partially labelled. Introduction Electrocardiograms are graphs of voltage over time, indicating the electrical activity of the heart. These measurements are recorded by placing electrodes on the patient's skin. Read more...

Year 2020 Resolution Log

Preamble A New Year's resolution is a common western tradition where, at the start of the new calendar year, a commitment to lasting change is established. These resolutions typically include changing an undesired behaviour (quitting smoking), accomplishing a personal goal (going to the gym consistently), or otherwise improving their life (become less offended by others). By documenting my resolutions, I intend to have an accountable record to refer to when I review the events of the year 2020. Read more...

About

Personal My name is Alexander Wong. I was born into the millennial demographic cohort. My first computer was the Tandy 1000, where I spent many summers playing old Sierra text adventure games like Kings Quest and Manhunter. I am currently a graduate student at the University of Alberta, Department of Computing Science, living in Alberta, Canada. I began pursuing my Master's degree in September 2018 due to a stubborn curiosity regarding the mechanisms of deep neural networks and their impressive results in image classification and segmentation tasks. Read more...