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  <loc>https://nerdish.org/2026/06/13/lesson-11-mixed-models-analyzing-repeated-measures-and-hierarchical-data/</loc>
  <lastmod>2026-06-13T06:09:59Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 11: Mixed Models: Analyzing Repeated Measures and Hierarchical Data</news:title>
   <news:publication_date>2026-06-13T06:09:59Z</news:publication_date>
   <news:genres>Blog</news:genres>
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 <url>
  <loc>https://nerdish.org/2026/06/13/lesson-10-negative-binomial-regression-solving-overdispersion-in-real-world-count-data/</loc>
  <lastmod>2026-06-13T06:06:48Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 10: Negative Binomial Regression: Solving Overdispersion in Real-World Count Data</news:title>
   <news:publication_date>2026-06-13T06:06:38Z</news:publication_date>
   <news:genres>Blog</news:genres>
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 <url>
  <loc>https://nerdish.org/2026/06/12/lesson-10-customer-lifetime-value-using-machine-learning-random-forests-gradient-boosting-xgboost-survival-models-and-modern-clv-prediction/</loc>
  <lastmod>2026-06-13T03:29:11Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 10: Customer Lifetime Value Using Machine Learning — Random Forests, Gradient Boosting, XGBoost, Survival Models, and Modern CLV Prediction</news:title>
   <news:publication_date>2026-06-13T03:29:11Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
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 <url>
  <loc>https://nerdish.org/2026/06/12/lesson-9-uplift-modeling-and-incrementality-prediction-identifying-who-should-receive-treatment/</loc>
  <lastmod>2026-06-13T03:26:54Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 9: Uplift Modeling and Incrementality Prediction — Identifying Who Should Receive Treatment</news:title>
   <news:publication_date>2026-06-13T03:26:53Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://nerdish.org/2026/06/12/lesson-8-causal-inference-for-data-scientists-potential-outcomes-propensity-scores-difference-in-differences-and-synthetic-controls/</loc>
  <lastmod>2026-06-13T03:24:57Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 8: Causal Inference for Data Scientists — Potential Outcomes, Propensity Scores, Difference-in-Differences, and Synthetic Controls</news:title>
   <news:publication_date>2026-06-13T03:24:57Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://nerdish.org/2026/06/12/lesson-7-a-b-testing-and-incrementality-measurement-proving-that-marketing-actually-works/</loc>
  <lastmod>2026-06-13T03:22:43Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 7: A/B Testing and Incrementality Measurement — Proving That Marketing Actually Works</news:title>
   <news:publication_date>2026-06-13T03:22:43Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://nerdish.org/2026/06/12/lesson-6-attribution-modeling-first-touch-last-touch-multi-touch-attribution-markov-chains-and-shapley-values/</loc>
  <lastmod>2026-06-13T03:20:38Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 6: Attribution Modeling — First-Touch, Last-Touch, Multi-Touch Attribution, Markov Chains, and Shapley Values</news:title>
   <news:publication_date>2026-06-13T03:20:37Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://nerdish.org/2026/06/12/lesson-8-logistic-regression-predicting-probabilities-and-binary-outcomes/</loc>
  <lastmod>2026-06-13T17:18:39Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 8: Logistic Regression: Predicting Probabilities and Binary Outcomes</news:title>
   <news:publication_date>2026-06-13T03:17:38Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://nerdish.org/2026/06/12/lesson-7-linear-regression-the-foundation-of-predictive-analytics/</loc>
  <lastmod>2026-06-13T03:10:11Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 7: Linear Regression: The Foundation of Predictive Analytics</news:title>
   <news:publication_date>2026-06-13T03:08:47Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://nerdish.org/2026/06/12/lesson-6-statistical-testing-from-description-to-inference/</loc>
  <lastmod>2026-06-13T03:04:02Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 6: Statistical Testing: From Description to Inference</news:title>
   <news:publication_date>2026-06-13T03:04:00Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://nerdish.org/2026/06/12/lesson-9-poisson-regression-modeling-counts-and-event-frequencies/</loc>
  <lastmod>2026-06-13T02:59:22Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 9: Poisson Regression: Modeling Counts and Event Frequencies</news:title>
   <news:publication_date>2026-06-13T02:20:30Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://nerdish.org/2026/06/12/lesson-5-marketing-mix-modeling-mmm-measuring-advertising-effectiveness-with-statistics-and-bayesian-methods/</loc>
  <lastmod>2026-06-13T02:15:40Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 5: Marketing Mix Modeling (MMM) — Measuring Advertising Effectiveness with Statistics and Bayesian Methods</news:title>
   <news:publication_date>2026-06-13T02:15:39Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://nerdish.org/2026/06/12/lesson-4-customer-lifetime-value-modeling-from-simple-ltv-to-bg-nbd-and-gamma-gamma-models/</loc>
  <lastmod>2026-06-13T02:12:44Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 4: Customer Lifetime Value Modeling — From Simple LTV to BG/NBD and Gamma-Gamma Models</news:title>
   <news:publication_date>2026-06-13T02:12:43Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://nerdish.org/2026/06/12/lesson-1a-complex-numbers-qubits-and-the-hidden-geometry-of-quantum-reality/</loc>
  <lastmod>2026-06-12T22:54:08Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 1A: Complex Numbers, Qubits, and the Hidden Geometry of Quantum Reality</news:title>
   <news:publication_date>2026-06-12T22:54:08Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://nerdish.org/2026/06/12/lesson-3-customer-segmentation-rfm-analysis-behavioral-segmentation-and-clustering/</loc>
  <lastmod>2026-06-12T16:44:52Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 3: Customer Segmentation — RFM Analysis, Behavioral Segmentation, and Clustering</news:title>
   <news:publication_date>2026-06-12T16:44:05Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://nerdish.org/2026/06/12/lesson-1-complex-numbers-vectors-and-inner-products/</loc>
  <lastmod>2026-06-12T22:32:43Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 1 — What Is a Qubit? Understanding Quantum States from Scratch</news:title>
   <news:publication_date>2026-06-12T16:28:04Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://nerdish.org/2026/06/12/the-principle-of-least-action-the-single-rule-behind-physics/</loc>
  <lastmod>2026-06-12T15:11:26Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>The Principle of Least Action: The Single Rule Behind Physics</news:title>
   <news:publication_date>2026-06-12T15:10:23Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://nerdish.org/2026/06/11/lesson-1-marketing-analytics-foundations-for-data-scientists/</loc>
  <lastmod>2026-06-11T23:42:32Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 1: Marketing Analytics Foundations for Data Scientists</news:title>
   <news:publication_date>2026-06-11T22:51:13Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://nerdish.org/2026/06/11/lesson-3-motion-in-two-dimensions-and-vectors/</loc>
  <lastmod>2026-06-12T06:56:06Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 3: Motion in Two Dimensions and Vectors</news:title>
   <news:publication_date>2026-06-11T22:40:17Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://nerdish.org/2026/06/11/lesson-2-motion-in-one-dimension-understanding-how-things-move/</loc>
  <lastmod>2026-06-11T23:42:32Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 2: Motion in One Dimension: Understanding How Things Move</news:title>
   <news:publication_date>2026-06-11T22:32:04Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://nerdish.org/2026/06/11/lesson-2-customer-lifetime-value-ltv-retention-analytics-and-churn-modeling/</loc>
  <lastmod>2026-06-12T04:12:38Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 2: Customer Lifetime Value (LTV), Retention Analytics, and Churn Modeling</news:title>
   <news:publication_date>2026-06-12T04:12:37Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://nerdish.org/2026/06/11/lesson-4-data-integration-and-joins-combining-multiple-datasets/</loc>
  <lastmod>2026-06-11T23:42:32Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 4: Data Integration and Joins: Combining Multiple Datasets</news:title>
   <news:publication_date>2026-06-11T18:51:00Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://nerdish.org/2026/06/11/lesson-5-data-visualization-turning-data-into-insights/</loc>
  <lastmod>2026-06-11T23:42:32Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 5: Data Visualization: Turning Data into Insights</news:title>
   <news:publication_date>2026-06-11T06:43:24Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
 </url>
 <url>
  <loc>https://nerdish.org/2026/06/11/lesson-1-units-measurements-and-scientific-thinking/</loc>
  <lastmod>2026-06-11T23:42:32Z</lastmod>
  <news:news>
   <news:publication>
    <news:name>nerd-ish</news:name>
    <news:language>en</news:language>
   </news:publication>
   <news:title>Lesson 1: Units, Measurements, and Scientific Thinking</news:title>
   <news:publication_date>2026-06-11T06:13:56Z</news:publication_date>
   <news:genres>Blog</news:genres>
  </news:news>
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