Calculates the Nevison index for a specified simple TU game.
Note that in general the Nevison index is not an efficient vector,
i.e. the sum of its entries is not always 1.
Hence no drawing routine for the Nevison index is provided.
Usage
nevisonIndex(v)
Arguments
v
Numeric vector of length 2^n - 1 representing the values of
the coalitions of a TU game with n players
Value
Nevison index for a specified simple game
References
Nevison, H. (1979) "Structural power and satisfaction in simple games", In: Applied Game Theory, Springer, pp. 39--57