
get_weighted_degree_decay(-Decay)

   Return the current decay rate for weighted degree.

Arguments
   Decay               (Domain) variable

Type
   library(gfd)

Description

   Return the current decay rate for weighted degree. The decay rate
   governs how fast the weighted degree decays -- each time a failure
   occurs during Gecode's constraint propagation, the constraint that
   failed will have 1 added to its failure count, while
   all other constraints' failure count is updated by multiplying its
   old value by the decay rate. The decay rate is a floating point value
   between 1 (no decay) and 0 (decay to 0 immediately). The weighted
   degree for a domain variable is the sum of all the failure
   counts of the constraints that the variable occurs in. 



