Jeff Chen's repositories
data-science
Lectures for Introduction to Data Science for Public Policy (PPOL 670-01)
tutorial_viirs_part1
Tutorial for using nighttime imagery from Suomi NPP's VIIRS instrument
tutorial_noaa_hail
Hail storms can cause harm to people and property. This R tutorial with leaflet.js + Google Charts integration focuses on getting started with severe weather data to assess and map hail risk around the US.
census-geocoder
R wrapper for census geocoding API
bookdown-demo
A minimal book example using bookdown
data-workshops
Data science workshop series with economic analysts
example-dashboard
Class tutorial for RMD Flexdashboard
geotransition
Vignette of some code for side project
getThisAmericanLife
Repository of This American Life transcripts for text analysis. Data from https://www.thisamericanlife.org/
image-processing
Basic scripts to prep images for specific computer vision use cases
jeffchen.org
New personal page
n-gram-similarity
Calculate n-gram similarity between two lists
optimus-prime
Viz Project
presoLayer
You've spent a lot of time working through data analysis and developing machine learning data products. It's technically sound and accurate. But for some reason the project is not getting much traction. Most people won't understand machine learning and predictive outputs in their full glory -- model outputs are not enough. This project seeks provide a lightweight, easy to deploy presentation layer for data projects.
propensity_score
Basic greedy matching in R
qcew_unpack
R functions to unpack QCEW flag files
rudy.js
A ML library for JavaScript (in development)
weather-series
R code to construct weather time series