Influence zone is a method to answer reverse k nearest neighbour (RkNN) query
using region approach without verifying each object; thus makes answering RkNN
query more efficient than conventional point to point approach. However, influence
zone is unable to answer dynamic value of k efficiently as it need to knows the value
of k in advance. We introduce a concept to expand the influence zone therefore it is
able to answer the dynamic value of k as well.
Keywords: dynamic k, expansion, influence zone, region approach, RkNN