Markets Within Markets: Building Regime Analytics
How I built Regime Analytics for market regime detection: sector states, predictive research and a custom hedge fund dashboard connected through an API.
Read the analysisErika Barker · AI, models & research
Data Science &
Quantitative Research.
I build models, study market regimes, and explain the evidence. Through Regime Analytics, I develop research tools for exploring financial data and testing ideas. My writing and teaching connect AI, computing systems and quantitative research with the assumptions behind them.
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What My Z-Score Indicator Taught Me About Chasing Better Numbers
Lessons from building a KAMA Z-score indicator: backtest overfitting, market regimes, and open-source Pine Script and Python code you can inspect.
Michael Burry, the AI boom, and the bill that comes due
Why I take Michael Burry seriously, where I question his arguments, and how AI spending, GPU lifetimes and circular financing shape the investment case.
From market mood to Regime Analytics
The retired economic-dashboard prototype that helped shape Erika Barker’s interest in predictive analytics and statistical market regimes.
Palantir and the price of moving faster
My military procurement experience helps me understand Palantir’s appeal. It also leaves me asking what faster decisions cost democratic accountability.
What the data says about the American middle class
What middle-class security means beyond an income label: housing, savings, ownership and the freedom to make choices, with sourced charts and a household-budget example.
Gradient boosting: how the trees learn together
An explanation of boosting, loss functions and regularization, with practical limits on interpretability and financial-model evaluation.
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Listen · The Gray Files
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Science, technology, economics and human behavior all meet in The Gray Files. I use the podcast to follow the questions that need more room than a short video. Explore the episodes here or listen in your favorite podcast app.
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From visual journalism to statistical market research: the ideas, experiments and revisions behind the work.
Palantir writing cited by Forbes contributor Peter Cohan, August 2025.
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