JJ Chen (jjchern)

jjchern

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Location:Atlanta

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JJ Chen's starred repositories

profile-summary-for-github

Tool for visualizing GitHub profiles

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EconML

ALICE (Automated Learning and Intelligence for Causation and Economics) is a Microsoft Research project aimed at applying Artificial Intelligence concepts to economic decision making. One of its goals is to build a toolkit that combines state-of-the-art machine learning techniques with econometrics in order to bring automation to complex causal inference problems. To date, the ALICE Python SDK (econml) implements orthogonal machine learning algorithms such as the double machine learning work of Chernozhukov et al. This toolkit is designed to measure the causal effect of some treatment variable(s) t on an outcome variable y, controlling for a set of features x.

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tidybayes

Bayesian analysis + tidy data + geoms (R package)

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greta

simple and scalable statistical modelling in R

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geogrid

Turning geospatial polygons into regular or hexagonal grids. For other similar functionality see the tilemaps package https://github.com/kaerosen/tilemaps

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codebraid

Live code in Pandoc Markdown

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PCI-China

Policy Change Index for China (PCI-China)

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sinew

Generate roxygen2 skeletons populated with information scraped from the function script.

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zEpid

Epidemiology analysis package

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codebook

Cook rmarkdown codebooks from metadata on R data frames

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roll

Fast and efficient computation of rolling and expanding statistics for time-series data.

did2s

Two-stage Difference-in-Differences package following Gardner (2021)

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ipumsr

Read IPUMS data into R.

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OpenTeams

OpenTeams is an opensource team visualization tool.

expss

expss: Tables and Labels in R

sentometrics

An integrated framework in R for textual sentiment time series aggregation and prediction

chirp

🔬Visualise Twitter Interactions

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fryingpane

Serve datasets from a package inside the RStudio Connection Pane.

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did2s_stata

Two-Stage Difference-in-Differences following Gardner (2021)

Rilostat

Tools for ILO Open Data via ILOSTAT bulk download facility or SDMX web service

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condformat

R package to apply conditional formatting rules to a data.frame

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reggie

Stata-like Regression Functionality for R

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wonderapi

Assists in making queries to CDC Wonder API

readability

Fast readability scores for text data

tiedr

Experimental package (not yet existent) for multi-gather() and multi-spread()

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public_salaries

Public sector employee salaries

printbl

Printable Tibbles

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staggered_adoption_synthdid

Code to incorporate staggered treatment adoption (based on appendix from Arkhangelsky et al. 2021) into synthdid package

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melig

An R data package contains trends in Medicaid income eligibility limits.

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obesity

Obesity rates in the United States

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