Table 5 Contingency table comparing two partitions

u ₁

N ₁₁

N ₁₂

⋯

n _1C

n _1.

u ₂

N ₂₁

N ₂₂

⋯

n _2C

n _2.

⋯

⋯

⋯

⋯

⋯

u _R

n _{R 1}

n _{R 2}

⋯

n _RC

n _R.

n _.1

n _.2

⋯

n _.C

n_.. = n