Memos
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1. Introducing Data Counterfactuals
A shared launch post and site memo arguing that many questions about value, data dividends, selection, privacy, poisoning, evaluation, and data leverage are really questions about what changes when data worlds change.
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2. When the Column Changes
Evaluation data as a data counterfactual: how a holdout point can change measurement, confidence, or decisions even when it never trains the model.
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3. Loose Syllabus
A lightweight open-course path through the site: readings, explorer prompts, and a few extension weeks.
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4. Formalisms
A draft memo lining up several tasks that fit the data counterfactuals frame: influence, valuation, evaluation value, selection, distillation, unlearning, privacy, poisoning, and other neighboring cases.
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5. Glossary
Working definitions for the key terms used across the memo, explorer, and related areas and papers page.