# Package org.optaplanner.core.impl.heuristic.selector.common.nearby

- Interface Summary
  Interface | Description
  --- | ---
  NearbyDistanceMeter<O,​D> |
  NearbyRandom | Strategy pattern to select a index of a nearby ordered value range according to a probability distribution.

- Class Summary
  Class | Description
  --- | ---
  BetaDistributionNearbyRandom |
  BlockDistributionNearbyRandom |
  LinearDistributionNearbyRandom | `P(x) = 2/m - 2x/m²`.
  NearbyDistanceMatrix |
  ParabolicDistributionNearbyRandom | `P(x) = 3(m - x)²/m³`.