RDF.jl
A full-featured RDF 1.2 library for Julia with a conformant SPARQL 1.1 and 1.2 engine
JuliaRDFSPARQL
Matt Helm
data scientist statistician builder
↓About
For over ten years at the U.S. Department of Labor, I’ve bridged the gap between data science and federal policy. My work spans the full pipeline: from data engineering to analysis, modeling, and forecasting — all the way through to deployment.
I specialize in architecting production-grade tools in Rust and Julia, building LLM-powered agents using the Model Context Protocol (MCP), and building models that answer real questions — like where the federal government should hire to best serve American workers.
I'm especially interested in problems where computation and statistics meet real-world consequence — where a model doesn't just describe the world but shapes budgets, enforcement strategy, or policy.
Languages & Tools
JuliaRustPythonTypeScriptSQLRHTML / CSSSvelte
Domains
Agentic AI (MCP)Causal InferenceOptimization & SimulationLabor EconomicsGeospatial AnalyticsWorkforce ForecastingStatistical ModelingRegulatory Compliance
Fun Stuff
Games, notebooks, blogs, and tools — things built for the love of the problem.
CheckMate.jl
A lightweight data validation framework for Julia, designed to help you define, run, and manage data quality checks on tabular data.
JuliaData ValidationETL
The Data Dispatch
A blog focusing on interesting and unique data sources.
Vue.jsNuxt.jsJuliaChart.js
Bayesian Regression With an Ordered Categorical Predictor Variable
Bayesian regression analysis of the incremental effects of educational attainment on income.
JuliaTuring.jl
Kernel Density Estimation
A brief primer on Kernel Density Estimation.
JavaScriptObservable
Homeward Bound
A physics-based puzzle game challenging players to navigate a spacecraft through complex gravitational fields using realistic n-body gravitational simulations.
Phaser.jsVue.jsJavaScript
Optimal Meatballs
Learn about circle packing by optimizing the size of meatballs! A featured notebook on plutojl.org.
JuliaPluto.jlOptimization
County Clustering
Clusters U.S. counties within a state according to industrial similarities using k-medoids and fuzzy c-means clustering algorithms.
JuliaPluto.jlClustering
Calculus
An interactive notebook that clearly demonstrates the fundamental concepts of calculus. Learn and understand limits, continuity, derivatives and integrals in 30 minutes or less.
JuliaPluto.jlEducation
Linear Algebra Part I
Learn about vectors and scalars.
JuliaPluto.jlEducation
Linear Algebra Part II
Learn about matrices.
JuliaPluto.jlEducation
The Travelling Salesman Game
The travelling salesman problem, as an arcade game. Each level is generated randomly and then solved with simulated annealing.
JavaScriptPhaser.jsSimulated Annealing
TerraStat.jl
Julia package for pulling BLS economic data based on custom geospatial shapes. Draw a region, get the data.
JuliaBLS APIGeospatial
Fuzzy Joiner
Perform fuzzy joins on two tables. The larger data set builds a Burkhard-Keller tree for efficient nearest neighbor searches using the Levenshtein edit distance. Core engine written in Rust, compiled to WebAssembly.
Vue.jsVuetifyRustWebAssembly
Experience
Data Scientist (Detail)
U.S. Department of Labor, Chief Data & Analytics Office
Leading the development of a department-wide data science and analytics platform, a unified, machine-readable data ecosystem for education and labor via RDF and semantic web technologies, and an MCP server to bridge AI systems with public federal labor data, enabling natural-language access to government datasets.
Staff Data Scientist
U.S. Department of Labor, Wage & Hour Division
Architect and deploy production-grade tools across the full data pipeline — from document retrieval systems in Rust (approved for DOL's Certified Software List) to constrained optimization models in JuMP.jl for national labor-allocation problems. Design and execute causal inference studies, Monte Carlo performance models, predictive models, time series modeling, and much more.
M.S. Finance / Economics
West Texas A&M University
Summa Cum Laude · GPA 4.0. Focused on econometric methods and quantitative finance.
B.S. Economics
University of West Florida
Cum Laude · GPA 3.6. Undergraduate degree in Economics with a focus on quantitative methods and econometrics.
Contact
If something here piques your interest, let's get in touch!