tech.v3.datatype.reductions
High performance reductions based on tech.v3.datatype concepts as well as java stream concepts.
commutative-binary-double
(commutative-binary-double op options rdr)(commutative-binary-double op rdr)Perform a commutative reduction using a binary operator to perform the reduction. The operator needs to be both commutative and associative.
commutative-binary-long
(commutative-binary-long op rdr)Perform a commutative reduction in int64 space using a binary operator. The operator needs to be both commutative and associative.
double-summation
(double-summation options rdr)(double-summation rdr)Double sum of data using Kahan compensated summation.
reducer-value->consumer-fn
(reducer-value->consumer-fn reducer-value)Produce a consumer from a generic reducer value.
staged-double-consumer-reduction
(staged-double-consumer-reduction staged-consumer-fn options rdr)(staged-double-consumer-reduction staged-consumer-fn rdr)A staged consumer is a consumer can be used in a map-reduce pathway where during the map portion .consume is called and then during produces a 'result' on which .combine is called during the reduce pathway.
See options for ham-fisted/preduce.
unary-double-summation
(unary-double-summation op options rdr)(unary-double-summation op rdr)Perform a double summation using a unary operator to transform the input stream into a new double stream.