Hello! I'm John.

I am interested in survey sampling and machine learning methods. With a background in computer science, I have experience developing computer programs for model estimation and forecasting. I love talking about research and possible collaborations. And I am excited about the opportunity to grow with everyone.

An Example to Accelerate `R` with `Rcpp` and `OpenMP`: a Simulation Study of Survey with Systematic Non-responses

5 minute read

Result: Using Rcpp with OpenMP can accelerate the simulation about 70 times in R.

Accelerate `R` with `Rcpp`: Sampling with Replacement and the Hansen-Hurwitz Estimator

3 minute read

Result: On average, using Rcpp can be about 4.5 times faster than just using R.

The R6 Class in `R`

3 minute read

What is a class system? R is an object-oriented programming language with four object-oriented class systems.1 In other words, there are four ways to write ...

Simulation Study – Coverage Probability of 95% Confidence Intervals of the Horvitz-Thompson Estimator

2 minute read

This short simulation study examines the coverage probability of 95% confidence intervals of the Horvitz-Thompson estimator of the population mean under s...

Comparing Exchange Rate Prediction Models

less than 1 minute read

I wrote this article for a course. The link to the article is here.

John Tsang

Hello! I'm John.

Recent posts

An Example to Accelerate R with Rcpp and OpenMP: a Simulation Study of Survey with Systematic Non-responses

Accelerate R with Rcpp: Sampling with Replacement and the Hansen-Hurwitz Estimator

The R6 Class in R

Simulation Study – Coverage Probability of 95% Confidence Intervals of the Horvitz-Thompson Estimator

Comparing Exchange Rate Prediction Models

An Example to Accelerate `R` with `Rcpp` and `OpenMP`: a Simulation Study of Survey with Systematic Non-responses

Accelerate `R` with `Rcpp`: Sampling with Replacement and the Hansen-Hurwitz Estimator

The R6 Class in `R`