Iterative Proportional Fitting Algorithms for Nested Structures
Description
The Iterative Proportional Fitting (IPF) algorithm operates on count data.
This package offers implementations for several algorithms that extend this to
nested structures: 'parent' and 'child' items for both of which constraints can be provided.
The fitting algorithms include Iterative Proportional Updating ,
Hierarchical IPF , Entropy Optimization ,
and Generalized Raking . Additionally, a number of replication methods
is also provided such as 'Truncate, replicate, sample' .