Algorithm A1 Merging mixture components

Require: data xN, finite mixture model f, criterion function Crit.

1: while (The number of components) > 1 do

2:  $i,j:=\underset{i<j}{\arg \min }\mathrm{Crit}(i,j)$

3:  if a certain stopping condition is satisfied then

4:    return The current components.

5:  end if

6:  Merge components i and j.

7: end while

8: return The current components.