Grace Li

Cardiac Electrophysiology

Inside the Map: How Cardiac EP Systems Calculate LAT and Activation

22 Mar, 2026

A deep dive into the engineering behind cardiac mapping: from raw catheter signals and sample indices to 3D activation maps and color interpolation.
Mapping the Speed Limits of the Heart: A Look at Propagation Velocity

8 Mar, 2026

If you want to understand how we track down and fix complex arrhythmias, you have to look beyond just *where* the signal is, and focus on *how it travels*. Here's a breakdown of Propagation Velocity.
Catheter Ablation vs. Pharmacotherapy in Young Adults with Atrial Fibrillation - New Evidence

13 Feb, 2026

Young adults are often excluded from major AF trials. This groundbreaking study compares catheter ablation to pharmacotherapy in patients ≤35, revealing critical insights about treatment efficacy and predictive factors.

Understanding the Bias-Variance Tradeoff

28 Mar, 2026

A deep dive into high bias and high variance, and how to balance them for better machine learning models.
Beyond the Line: Building Your First Shallow Neural Network

15 Mar, 2026

Why settle for a straight line? Learn how to stack hidden layers to build a shallow neural network that can learn complex patterns.
Vectorization: The Secret Sauce of Efficient AI

14 Mar, 2026

Why are for-loops the enemy of deep learning? Learn how vectorization and NumPy enable the massive scale of modern AI.

Introduction to SMBus and I2C Communication for Robotics

5 May, 2026

A practical guide to using the SMBus protocol in Python to establish I2C communication between a Raspberry Pi and other electronic devices.
Pythonic Encapsulation: The Power of @property

20 Jan, 2026

Why Python doesn't use Java-style getters and setters, and how to use the @property decorator for validation.
Introduction to WFDB: Working with PhysioNet Data

20 Jan, 2026

A beginner's guide to using the WFDB library to download, read, and plot ECG data from PhysioNet.