list of two-dimensional vectors: in the first there is a vector and in the second its instances
Value
float
multiplicity of the researched item
Details
This function is useful in the construction of kStatistics.
Compute how many times an element is in a multiset, that is its multiplicity.
References
E. Di Nardo, G. Guarino, D. Senato (2008) An unifying framework for k-statistics, polykays and their generalizations.
Bernoulli. 14(2), 440-468. (download from http://arxiv.org/pdf/math/0607623.pdf)