Data Science & Analytics
Transforming complex data into actionable insights and open-source tools
Data science powers evidence-based decision making across government, research, and industry. Gavin Rozzi combines advanced statistical methods with domain expertise in public policy to create tools and analyses that drive real-world impact.
zipcodeR
An R package for working with U.S. ZIP code data, used by researchers nationwide for geospatial analysis and demographic research.
Technical Skills
R Programming
Package development, statistical analysis, data visualization with ggplot2, and Shiny applications.
Geospatial Analysis
GIS mapping, spatial statistics, boundary analysis, and geocoding with sf and leaflet.
Statistical Modeling
Regression analysis, time series, spatial autocorrelation, and predictive modeling.
Data Visualization
Interactive dashboards, publication-quality graphics, and data storytelling.
Data Science Projects
NJ HOMES Choice Tool
Interactive planning tool implementing A4/S50 affordable housing calculations for all 564 municipalities, supporting NJ HOMES grantmaking and municipal compliance.
Operation Right Answer: Housing Services Modernization
Led development of a data-driven service framework to modernize how New Jersey housing programs serve residents, partnering with the New Jersey Innovation Authority to implement AI-assisted contact center technology.
NJ Eviction Guide
Interactive self-help tool connecting New Jersey's most vulnerable residents directly to housing assistance and legal resources.
Municipal Lead Reporting Portal
Statewide compliance platform capturing residential lead-paint inspection data for all 564 New Jersey municipalities.
New Jersey Population Density Map
Award-winning 3D visualization of New Jersey population density using rayshader, winning First Place in the 3D category at the NJ DEP GIS Mapmaking Contest.
njgeo
An R package for geocoding addresses using New Jersey's official geocoding service, freely available as an alternative to commercial solutions.
njtr1
An R package that makes it easy to download and analyze New Jersey motor vehicle crash data for transportation research and safety analysis.
TrentonTracker
A modern Progressive Web App making New Jersey legislative data accessible and searchable, with ZIP code-based legislator lookup.
COVID-19 Spread Visualization
Interactive web-based visualization tracking the spread of COVID-19 across U.S. counties using advanced GIS technologies and real-time data processing.
NJ Narcan Dashboard
An interactive dashboard tracking opioid overdose interventions across New Jersey through law enforcement Narcan deployment data.
zipcodeR
An R package for working with U.S. ZIP codes, available on CRAN and used by researchers nationwide for geospatial analysis and demographic research.
OPRAmachine
New Jersey's first statewide freedom of information platform, processing over 75,000 public records requests and releasing 250GB of government data.
Publications
The Dark Side of Sentiment Analysis: An Exploratory Review Using Lexicons, Dictionaries, and a Statistical Monkey and Chimp
SSRN
Jan 2022
journalnjtr1: An R package for researching road safety in New Jersey using open crash data
Software Impacts
Nov 2021
journalzipcodeR: Advancing the analysis of spatial data at the ZIP code level in R
Software Impacts
Jun 2021
conferenceUsing Civic Technology to Monitor Freedom of Information in New Jersey
17th Research Data Alliance Plenary Meeting
Apr 2021
Articles & Tutorials
Making Data Tell Stories: Visualization for Public Policy
How effective data visualization can transform complex policy issues into actionable insights for decision-makers and the public
Jun 22, 2024React and TypeScript Best Practices for Government Applications
Lessons learned building production React applications with TypeScript for government clients who demand reliability, accessibility, and security
Feb 15, 2024The Complete Guide to Filing Public Records Requests in New Jersey
Everything you need to know about accessing government records through New Jersey's Open Public Records Act (OPRA)
Nov 8, 2023Digital Transformation in Government: Lessons from the Trenches
Practical insights on modernizing government technology infrastructure and processes from years of hands-on experience
May 12, 2023Section 230 under attack: Why we must defend online freedom of speech
Section 230 of the Communications Decency Act is under attack from all sides. This analysis examines why the law's protections are essential for online civic engagement and a free internet.
Jan 26, 2023Why Open Data Matters for Government Transparency
Exploring how open data initiatives transform government accountability and enable citizen engagement in the digital age
Aug 20, 2022