views this week

James

Fueling a six-hour ride

Getting better sleep

Sarnia to Barrie

Tracking load with CTL, ATL, and form

Zones, and why mine were wrong

Projects and Writing

Implementing a Go Engine in Rust with MCTS, RAVE, and Heuristic Rollouts

Engineering and Research

ML Infra, Neuralink

Research, Firefox

Additional Work

Mozilla Engineering Talks + Networking

Instrumenting Firefox's Notification Permission Lifecycle with Glean

Removing 2,645 Lines of the Old Clear Data Dialog

SmartBlock Shims: Click-to-Load Placeholders for Blocked Tracker Content

Tracking-Parameter Stripping in Firefox's Copy Clean Link

Building Firefox's New-Tab Privacy Surface

Privacy Metrics Service

Privacy Metrics Component

Top Trackers Database

Nova Redesign & New Tab Integration

Flushing Live ContentBlockingLogs on Anti-Tracking DB Query

ETP Infrastructure: A Build-Time Pipeline for Firefox Privacy Configuration

Android ETP Pipeline

Sphinx ETP Extension

Private Browsing Cell Clarification

Pref Comment Cleanup

Strict Mode Fix

Gecko Security Patches

Defensive Range Checks in a Browser-Side Compression Decoder

Marking Browser Clipboard Writes as Sensitive in Private Contexts

Embed Link Preservation

Machine Learning Research: Cost-Aware Tracker Blocking in Firefox

Data Exploration and Visualization

Hand-Crafted Features and Tree Models

Learned URL Representations

Firefox ONNX Inference

Search, Shopify

Applied LLM Engineering

Calibrating an LLM Judge: Cohen's Kappa from 0.02 to 0.61

Just-in-Time Context: Moving Tool Instructions Out of the System Prompt

Search and Retrieval

Build Time and Query Time

Building the Index

Fusion and Reranking

Lexical Retrieval

Measuring a Relevance Change

Ranking on Evidence

Semantic Retrieval

Open Source Contributions

Killing an N+1 in the Grading Interface

Scheduled Assignment Visibility, End-to-End

Model-Layer Invariants and Tests as Contracts

AST Manipulation, Custom Checkers, and a Student-Facing Reporter

Course Notes

Machine Learning

Backpropagation

Neural Networks

Transformers and Attention

Bias-Variance Tradeoff and Bagging

Feature Engineering and Embeddings

Gaussian Discriminant Analysis

Gradient Boosting

Loss Functions and Optimization

Logistic Regression and Regularization

Experiment: Heart Disease Prediction

K-Nearest Neighbors

K-Nearest Neighbors

Experiment: MNIST Digit Classification

Linear Regression

Linear Regression

Gradient Descent

Experiment: Gradient Descent

Practice Problems

Large Language Models

Large Language Models

Retrieval Augmented Generation

Fine-Tuning and Parameter-Efficient Methods

Fine-Tuning and Parameter-Efficient Methods

Linguistics and Tokenization

Differential Privacy

Federated Learning

On-Device Inference

Privacy Attacks on ML Models

Training a Flux LoRA of My Face

Painting Classifier

Experiment: Painting Classifier

Feature Engineering Pipeline

Model Comparison: Logistic Regression vs Random Forest vs MLP

Search and Retrieval

Counting Words Smarter: TF, Length Normalization, and IDF

The Whole Pipeline: From Query to Ranked Results

Systems and Practice

ML Systems Design

Model Evaluation and Experiment Design

Socratic Learning System

Building with AI

1: Re-imagining Matrices

2: Solving Linear Systems

3: Vectors in Euclidian Space

4: Matrix Operations

5: Matrix Transformations as Functions

7: Kernel and Image

8: Orthogonality and Projections

9: The Determinant

10: Eigenvalues and Eigenvectors

11: Diagonalization and Similarity

12: Orthogonal Diagonalization and the Spectral Theorem

13: Singular Value Decomposition

14: Portfolio Optimization

15: PCA in Finance

16: Covariance Estimation and Regularization

STA238 Probability Statistics and Data Analysis II

Confidence intervals

Estimating a parameter

Hypothesis testing

Judging an estimator

Data Structures and Algorithms

Dictionary compositions

Dicts, defaultdict and Counter

Graphs and traversal

PlainSpec Practice

PHL217: Introduction to Continental Philosophy

1,662 contributions in the last year @lxyhan

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Imaging