Statistical Property Testing and Estimation Beyond the i.i.d. Setting
summary
Provides a tight, instance-optimal sample complexity for identity testing to a known distribution p: samples = Theta(max(1/epsilon, ||p after trimming epsilon mass and removing largest prob||_{2/3} / epsilon^2)) up to constants. Achieves this with a modified chi-squared test that replaces expected counts by observed xi and uses p^{2/3}-normalization. Analysis uses variance bounds (Chebyshev) and matching lower bounds; also gives an algorithmic decomposition for multiplicative inequalities with working Matlab code.
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chapters (7)
- 0:00Introduction
- 0:58The basic setting
- 2:37What do we really want
- 4:55Whats Known
- 16:45Analysis
- 22:26Geometric Interpretation
- 26:23Further Directions
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