(0) full reference 32,561 rows, stattest=chisquare for every column, no shift, 2000 windows
n=50   dataset 0.2% Educat=8% Marita=8% Native=23% Occupa=6% Race=6% Relati=5% Sex=6% Workcl=5%
n=100  dataset 0.4% Educat=7% Marita=11% Native=19% Occupa=7% Race=5% Relati=5% Sex=4% Workcl=8%
n=200  dataset 0.4% Educat=6% Marita=6% Native=14% Occupa=8% Race=6% Relati=5% Sex=5% Workcl=8%

(0b) reference 1000 rows, no shift, window growing: Relationship (no rare category)
n=50    alarm 7.8%
n=200   alarm 10.7%
n=500   alarm 20.8%
n=1000  alarm 34.7%

(1) reference 1000 rows, no shift, alarm rate at p<0.05
column             n  Evidently style  expected from full data  no unseen value  trials  expected<1
Race              50             8.8%                     5.5%             8.8%    3000         40%
Race             100            10.6%                     5.3%            10.6%    3000         24%
Race             200            12.1%                     5.4%            12.1%    2999          2%
Workclass         50             8.6%                     5.0%             6.5%    2933          7%
Workclass        100            11.7%                     7.3%             8.1%    2881          7%
Workclass        200            18.0%                     9.0%            10.4%    2746          7%
Education         50            15.1%                     8.4%            13.4%    2941         43%
Education        100            17.1%                     7.1%            14.3%    2903         16%
Education        200            25.7%                     5.8%            20.8%    2812          8%
Native_country    50            51.5%                    22.1%            20.6%    1833         94%
Native_country   100            70.8%                    18.2%            21.8%    1122         90%
Native_country   200            87.8%                    13.1%            18.8%     451         80%

(2) five categories, reference 1000 rows, no shift, Evidently style test on a large current
current    1000: alarm 32.1%
current   10000: alarm 92.8%
current  100000: alarm 99.9%

(3) five categories, 0.5pt moved between two categories, two samples of size n, chi2_contingency, 1000 runs
population Jensen-Shannon distance 0.0085
n=10000    median p=2.1e-01 share p<0.05=21.8% mean distance=0.0123
n=100000   median p=1.9e-06 share p<0.05=99.5% mean distance=0.0090
n=1000000  median p=2.3e-62 share p<0.05=100.0% mean distance=0.0086
no shift, n=1000000: share p<0.05=4.1%