# Package org.apache.datasketches.req

This package is for the implementation of the Relative Error Quantiles sketch algorithm.

See: Description

Interface Summary
ReqDebug: The signaling interface that allows comprehensive analysis of the ReqSketch and ReqCompactor while eliminating code clutter in the main classes.

Class Summary
ReqSketch: This Relative Error Quantiles Sketch is the Java implementation based on the paper "Relative Error Streaming Quantiles" by Graham Cormode, Zohar Karnin, Edo Liberty, Justin Thaler, Pavel Veselý, and loosely derived from a Python prototype written by Pavel Veselý.
ReqSketchBuilder: For building a new ReqSketch
ReqSketchIterator: Iterator over all retained items of the ReqSketch.

## Package org.apache.datasketches.req Description

This package is for the implementation of the Relative Error Quantiles sketch algorithm.

See Also:
  `ReqSketch`