San Antonio · Higher education analytics

Data scientist · Researcher · Storyteller

I turn complex data into clear decisions.

I connect analytical rigor with human context—building predictive models, graph systems, and interactive tools that make evidence easier to understand and use.

Ph.D.Scientific research
Higher edDecision support
ML + graphConnected insight
Decision intelligenceEvidence in motion
Explore moreLinkedIn ↗GitHub ↗Medium ↗

Work at the intersection of

Higher education×Graph analytics×Machine learning×Data storytelling

01 / Selected work

Questions worth
following.

Each project begins with a real question and ends with something people can examine, challenge, and use.

01Geospatial decision support

Site Scout: where could a great coffee shop thrive?

A local observation became a county-scale location intelligence project. Site Scout brings together population, jobs, traffic, access, and nearby businesses to compare promising places with evidence—not instinct alone.

What it addsA reproducible way to compare opportunity across an eight-county region.
Geospatial analysisInteractive dashboardPublic data
Selected project
02Graph analytics

The student journey is not only a spreadsheet.

A graph model connects students, courses, sections, majors, and outcomes so analysts can study paths—not isolated rows. It reveals shared routes, critical transitions, and patterns that traditional tables tend to hide.

What it addsA connected view of student paths, shared courses, and program movement.
BigQuery GraphCypher / GQLNetworkX
Selected project
03Responsible machine learning

Evaluating models beyond a single score.

A practical framework for moving from impressive metrics to bounded, decision-ready claims—using threshold trade-offs, error analysis, reproducible evaluation, and operational context.

What it addsEvaluation that connects thresholds and errors to the decisions they affect.
Model evaluationExplainabilityPython
Selected project

02 / How I work

Good analysis earns trust before it asks for action.

The code matters. So do the assumptions, the context, and the way the result is communicated.

01

Frame the decision

Start with the choice the analysis must support, the people affected, and the limits that matter.

02

Build trustworthy evidence

Connect, clean, test, and model the data while making assumptions and uncertainty visible.

03

Make the finding usable

Turn complexity into a clear story, an interactive tool, or a repeatable workflow people can act on.

03 / Experience

Built across research, education, and applied data.

My background spans institutional analytics, data engineering, scientific research, technical writing, and community leadership.

Download full résumé
2024 — Present

Senior Statistical Specialist

Alamo Colleges

Use Python, SQL, statistical methods, predictive modeling, and dashboards to turn complex institutional data into reliable decision support.

2025 — Present

San Antonio Chapter Lead

Women in Data

Lead a professional community through technical events, speaker sessions, career development, and accessible education in data and AI.

2024 — 2025

Data Engineer

Refonte Learning

Built experience across ETL, workflow orchestration, relational and NoSQL systems, distributed processing, and cloud-oriented analytics.

2022 — Present

Contributing Technical Writer

Freelance

Translate machine learning, AI, and cloud analytics into clear, useful technical stories for broad audiences.

04 / Ideas in progress

I write to make technical ideas feel possible.

My writing explores machine learning, graph thinking, education, and the human decisions behind analytical work. The goal is not to make complexity disappear—it is to make it understandable.

Visit my Medium
01Machine learning, explained honestly
02Student journeys as connected systems
03Education that creates independent thinkers
04Research ideas worth exploring

05 / A little about me

Curiosity is the thread that connects my work.

I’m Rayan Yassminh, a San Antonio–based data scientist and higher education analyst with a Ph.D. in geophysics and a foundation in computer engineering.

My path across science, technology, education, and community work has taught me to look at problems from more than one angle. I care about rigorous analysis, clear communication, and building tools that help people make better decisions.

Ph.D. · GeophysicsData science & analyticsHigher education researchCommunity leadershipCloud analytics