Hello! I am a Senior Scientist at the Institute for Human Development and Potential, A*STAR, working on neighborhoods, families, and health. My research studies how the environments people move through, both physical and digital, shape their behavior and outcomes.

Published and Accepted Peer-Reviewed Articles

Does working from home work? A natural experiment from lockdowns

European Economic Review, 2023
PDF Published version (DOI) Online Appendix Slides

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Change in output (tracked changes)
Change in output (tracked changes)
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Sensitivity to geocoding
Sensitivity to geocoding
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Standard vs local time
Standard vs local time
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Local time by hour-of-day
Local time by hour-of-day
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Global rollout of lockdowns
Global rollout of lockdowns

Holier Than Thou? No Large Partisan Gaps in the Consumption of Pornography Online

(with Gaurav Sood)
Journal of Quantitative Description: Digital Media, 2024
PDF Published version (DOI) Replication package

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Online consumption
Online consumption
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Quantile regression of duration without covariates
W/o covariates
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Quantile regression of duration with covariates
With covariates

Illegal Immigration and Infections: Evidence from Two Modern Pandemics

Economic Modelling, 2025
PDF Published version (DOI)

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Reduced form: Coastlines and Covid-19
Reduced form: Coastlines and Covid-19
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Contact rate in SIRD, interactions by months
Contact rate in SIRD, interactions by months

A Measurement Gap? The Effect of Survey Instrument and Scoring on the Partisan Knowledge Gap

(with Gaurav Sood and Daniel Weitzel)
Public Opinion Quarterly, 2025
PDF Published version (DOI) Replication package

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Knowledge gaps by different treatment groups and items
Knowledge gaps by different treatment groups and items
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Weighted estimate of inflated partisan gaps
Weighted estimate of inflated partisan gaps


Shades Of Neutrality: Detecting Media Slant In A Political Monopoly Using Quotation Accuracy

[Accepted, ACM Transactions on Intelligent Systems and Technology]
PDF Published version (DOI) Replication package Code Speech topics viz.

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NLP pipeline for measuring quotation accuracy
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Scoring semantic support
Scoring semantic support
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Effect sizes specification chart
Effect Sizes

Residential proximity to transport facilities as urban determinants of individual-level per- and poly-fluoroalkyl substance (PFAS) exposures: Analysis of two longitudinal cohorts in Singapore

(with [-] Subhashni Raj, Youssef Oulhote, Damaskini Valvi, Sharon Ng, See Ling Loy, Shiao-yng Chan, Tarik Benmarhnia, and [...] Jonathan Y. Huang)
[Accepted, Environmental Health]
PDF Published version (DOI) Replication package

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TFPFAS figure 1
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TFPFAS figure 2
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TFPFAS figure 3

Social Proof is in the Pudding: The (Non)-Impact of Social Proof on Software Downloads

(with Gaurav Sood and Daniel Weitzel)
[Accepted, Journal of Online Trust and Safety]
PDF Replication package

Bad Domains: Exposure to Malicious Content Online

(with Gaurav Sood)
[Accepted, Information, Communication & Society]
PDF Replication package

Deconstructing the MeToo Movement and the Blue Wave in the 2018 House Elections

[Accepted, Computational Communication Research]
PDF Slides Topic map

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Timeline of MeToo tweets (2018)
Timeline of MeToo tweets (2018)
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Strategic candidacy of Democratic women challengers
Strategic candidacy of Democratic women challengers

Working Papers

Neighborhood Mismatch and Visits

December 2024 (with LIM Jing Zhi)
PDF Slides

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Scale and borders in the Singapore context
Scale & borders in the Singapore context
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Two neighbourhoods (Mount Pleasant and Toa Payoh Central)
Two neighbourhoods (Mount Pleasant & Toa Payoh Central)
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Asymmetries in mismatch and visits
Asymmetries in mismatch and visits
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EIP and increases in neighborhood visits
EIP and increases in neighborhood visits

How Often is Politicians' Data Breached? Evidence from HIBP

Mar 2025 (with Gaurav Sood)
PDF Replication package


Exposed: Shedding Blacklight on Online Privacy

Dec 2025 (with Gaurav Sood)
PDF Replication package

Parks, pedestrians, and pediatric adiposity: A spatiotemporal analysis in an urban longitudinal cohort

Dec 2025 (with [-] Mya Thway Tint, Yung Seng Lee, Fabian Yap, Evelyn Loo, Yap Seng Chong, Keith M. Godfrey, Johan G. Eriksson, [...], and Jonathan Y. Huang)
PDF

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Rolling window age interaction (multiple-hypothesis corrected)

Transient buffering effects of parks accessibility against movement control policies on child weight status: A quasi-experimental analysis in Singapore

Jan 2026 (with [-] Ka Kei Sum, Michelle Z.L. Kee, Mya Thway Tint, Evelyn C. Law, Fabian Yap, Yung Seng Lee, Yap-Seng Chong, Keith M. Godfrey, [...], and Jonathan Y. Huang)
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Spatial distribution of residential park access
Spatial distribution of residential park access
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Event-study DiD: BMI by park access (relative to 2019)
Event-study DiD: BMI by park access (relative to 2019)

Other Publications & Projects

Social Exposure Zones in a Small City

(with LIM Jing Zhi)
Slides Income/Experienced segregation indices viz.

Income and Productivity Trends of Guangdong: A Data-Driven Case Study of the Greater Bay Area

October 2022 (with LI Jingwei and ZHANG Xuyao)
PDF (latest version) PDF (ACI WP)

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Permutation tests
Permutation tests

Segregation Across Neighborhoods in a Small City

(with LEE Shu En, LIM Jing Zhi)
PDF (latest version)

[*Superceded by Neighborhood Mismatch and Visits]

Unexpected Shocks to Movement and Job Search: Evidence from COVID-19 Policies in Singapore Using Google Data

PDF

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Early changes (anomalies) in movement patterns
Early changes (anomalies) in movement patterns
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Lockdown announcement effect
Lockdown announcement effect
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Early changes in job searches
Early changes in job searches

Report on Surveying the Singapore Urban Labour Market Using Online Job Postings

(with Terence Ho, LIM Jing Zhi)
PDF

Software

LexicalRichness: A module to compute textual lexical richness
LexicalRichness computes measures of lexical richness (aka lexical diversity or language sophistication) from textual data. Lexical richness refers to the ratio of different unique words to the total number of words in a text. Measures include MTLD and HD-D, which are resilient to varying text lengths.
Src PyPI ReadTheDocs DOI

runPyNB: Run Jupyter notebooks in command-line and Makefiles
runPyNB offers a command-line utility that runs (and time) Jupyter notebook files (.ipynb) without launching the IDEs (Jupyter notebooks or JupyterLab).
Src PyPI ReadTheDocs DOI

Forestplot: Make publication-ready but customizable coefficient plots
Forestplot makes publication-ready coefficient plots easy to make out-of-the-box. Other names for forest plots are: coefplots, coefficient plots, meta-analysis plots, dot-and-whisker plots, blobbograms, margins plots, regression plots, and ropeladder plots. Users provide a dataframe (e.g. from a spreadsheet) where rows correspond to a variable/study with columns including estimates, variable labels, and confidence interval limits.
Src PyPI ReadTheDocs DOI


forestplot example coefficient plot

rbStata: CLI utility to roll back Stata data version
rbStata is a command-line interface to easily convert between (or, roll back) versions of Stata's .dta data files (which are not forward compatible).
Src PyPI ReadTheDocs DOI

texCheckmate: Shell and Make utilities for inspecting a LaTeX manuscript
texCheckmate bundles small shell and Make utilities for quickly inspecting a manuscript typeset in LaTeX.
Src Notes

Notes

Some notes on carpentry and teaching resources.


Since 2023, I've been writing notes broadly covering coding, meta-programming, and applied statistics in the context of empirical/data science. I'm mainly writing for myself. If you find some of these notes useful too, that's a bonus. Click the link above to see them.





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