compressor.h File Reference

#include <TTree.h>
#include <fstream>
#include <map>
#include <set>
#include <vector>

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Functions
Float_t	approx (std::vector< UShort_t > *order, std::vector< Float_t > *dict, std::vector< size_t > *cnt, Int_t n_entries, TTree *t, Float_t *gen_, size_t maxNumClusters)
Int_t	newLoc (std::vector< Int_t > *loc_vec, std::vector< std::set< Int_t >> *loc_set_vec)
void	removeDiff (Float_t distance, Float_t min, std::map< Float_t, std::set< Float_t >> *distance_min_set_map)
void	addDiff (Float_t distance, Float_t min, std::map< Float_t, std::set< Float_t >> *distance_min_set_map)

Function Documentation

void addDiff	(	Float_t	distance,
		Float_t	min,
		std::map< Float_t, std::set< Float_t >> *	distance_min_set_map
	)

Definition at line 155 of file compressor.h.

View newest version in sPHENIX GitHub at line 155 of file compressor.h

Referenced by approx().

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Float_t approx	(	std::vector< UShort_t > *	order,
		std::vector< Float_t > *	dict,
		std::vector< size_t > *	cnt,
		Int_t	n_entries,
		TTree *	t,
		Float_t *	gen_,
		size_t	maxNumClusters
	)

Compression algorithm for use in the CMSSW and sPHENIX projects. Using 16-bit short integers to store 32-bit floating-point values. Author: fishy.nosp@m.u@ii.nosp@m.i.org.nosp@m..tw May 22, 2021 approx() compresses data held in t and returns the standard deviation of the differences between the actual and approximated data.

Definition at line 32 of file compressor.h.

View newest version in sPHENIX GitHub at line 32 of file compressor.h

References addDiff(), Acts::Test::delta, max, min, newLoc(), removeDiff(), second, and sum.

Referenced by DSTCompressor::compress_gaussian_dist(), G4DensityEffectCalculator::ComputeDensityCorrection(), and doCompression().

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Int_t newLoc	(	std::vector< Int_t > *	loc_vec,
		std::vector< std::set< Int_t >> *	loc_set_vec
	)

Definition at line 132 of file compressor.h.

View newest version in sPHENIX GitHub at line 132 of file compressor.h

Referenced by approx().

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void removeDiff	(	Float_t	distance,
		Float_t	min,
		std::map< Float_t, std::set< Float_t >> *	distance_min_set_map
	)

Definition at line 146 of file compressor.h.

View newest version in sPHENIX GitHub at line 146 of file compressor.h

Referenced by approx().

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