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About Me

Hi, my name is ZJ. I love contributing to the open-source data science community. I mainly code in R and Julia with a dash of Python and a minimal amount of Scala thrown in.


Project Language Notes
{disk.frame} R {disk.frame} is a larger-than-RAM data manipulation framework. It is also a Top 100 R package by number of Github Stars
SortingLab.jl Julia Faster sorting algorithms in Julia including faster String sorting and sortperm (i.e. order) algorithms
JDF.jl Julia A fast DataFrames serialization format and package.

Focus areas, better NSE for disk.frame

Social Media

Platform Handle
Twitter @evalparse
LinkedIn daizj
Twitch evalprase
Youtube Data Science ZJ

Awesome list

Category Notes
awesome-eda Exploratory Data Analysis
awesome-ml-fraemworks Machine Learning Framework
awesome-data-science-notebook-engines Data Science notebooks like Jupyter


  1. JLBoost.jl Archived

    A 100%-Julia implementation of Gradient-Boosting Regression Tree algorithms

    Julia 61 2

  2. Fast Disk-Based Parallelized Data Manipulation Framework for Larger-than-RAM Data

    R 529 36

  3. Julia DataFrames serialization format

    Julia 47 4

  4. Convenience functions missing in Julia

    Julia 11

  5. Faster sorting algorithms (sort and sortperm) for Julia

    Julia 10 2

  6. Various UI widgets/components not part of Shiny e.g. alerts, styled buttons

    R 172 67

929 contributions in the last year

May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Mon Wed Fri

Contribution activity

May 2021

Answered 1 discussion in 1 repository

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