Pruning policy with a search quality parameterized guarantee - configuration of this policy allows to specify two parameters: k and ε such that:
Package org.apache.lucene.index.pruning Description
Static Index Pruning Tools
This package provides a framework for pruning an existing index into a smaller index while retaining visible search quality as much as possible.
An index can be pruned in several levels:PruningReader or with the static tool PruningTool.