Effective Number of Parties - Values

Values

The following table illustrates the difference between the values produced by the two formulas for eight hypothetical vote or seat constellations:

Constellation Largest component, fractional share Other components, fractional shares N, Laakso-Taagepera N, Golosov
A 0.75 0.25 1.60 1.33
B 0.75 0.1, 15 at 0.01 1.74 1.42
C 0.55 0.45 1.98 1.82
D 0.55 3 at 0.1, 15 at 0.01 2.99 2.24
E 0.35 0.35, 0.3 2.99 2.90
F 0.35 5 at 0.1, 15 at 0.01 5.75 4.49
G 0.15 5 at 0.15, 0.1 6.90 6.89
H 0.15 7 at 0.1, 15 at 0.01 10.64 11.85

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