Acts::SeedDeduplicator Class Reference

Flags seeds whose measurements one accepted track already holds. More...

#include <Acts/TrackFinding/SeedDeduplicator.hpp>

Classes
struct	Config
	Configuration of the duplicate threshold. More...

Public Types
using	MeasurementKey = std::uint32_t
	Type of the dense measurement key.
using	Score = std::uint32_t
	Type of a summed weight.
using	Weight = std::uint8_t
	Type of the weight of a key.

Public Member Functions
	SeedDeduplicator (const Config &config)
	Constructor.
void	addTrack (std::span< const MeasurementKey > measKeys)
	Accept a track.
bool	isDuplicate (std::span< const MeasurementKey > measKeys) const
	Check if one accepted track holds enough of the seed keys.
std::size_t	nTracks () const
void	reset (std::size_t nMeasKeys)
	Remove all tracks and set the key range.
void	setWeight (MeasurementKey measKey, Weight weight)
	Set the weight of a key.
Weight	weight (MeasurementKey measKey) const

Detailed Description

Flags seeds whose measurements one accepted track already holds.

Measurements are dense keys in [0, nMeasKeys). The caller chooses which keys a seed contributes. The keys are plain indices and not SourceLinks, because a SourceLink has no hash and no equality comparison.

Each key has a weight, 1 by default. The weight can for example be the number of measured local coordinates, so that a pixel measurement counts 2 and a strip measurement counts 1. A seed with the summed weight seedScore is a duplicate if one track holds keys of the summed weight

min(seedScore, max(1, minScore, seedScore - maxMissingScore)).

The scores of different tracks do not add up. Seeds can be queried in any order.

Constructor & Destructor Documentation

SeedDeduplicator()

Acts::SeedDeduplicator::SeedDeduplicator ( const Config & config )

explicit

Constructor.

Parameters

config

The threshold configuration

Member Function Documentation

addTrack()

void Acts::SeedDeduplicator::addTrack

(

std::span< const MeasurementKey >

measKeys

)

Accept a track.

Parameters

measKeys

The keys of the measurements on the track

isDuplicate()

bool Acts::SeedDeduplicator::isDuplicate

(

std::span< const MeasurementKey >

measKeys

)

const

Check if one accepted track holds enough of the seed keys.

Parameters

measKeys

The keys of the seed, each key at most once

Returns

True if the seed is a duplicate

nTracks()

std::size_t Acts::SeedDeduplicator::nTracks

(

)

const

Returns

The number of accepted tracks

reset()

void Acts::SeedDeduplicator::reset

(

std::size_t

nMeasKeys

)

Remove all tracks and set the key range.

Every weight becomes 1.

Parameters

nMeasKeys

The number of measurement keys, every key must be below this number

setWeight()

void Acts::SeedDeduplicator::setWeight	(	MeasurementKey	measKey,
		Weight	weight )

Set the weight of a key.

Parameters

measKey	The measurement key
weight	The weight of the key

weight()

Weight Acts::SeedDeduplicator::weight

(

MeasurementKey

measKey

)

const

Parameters

measKey

The measurement key

Returns

The weight of the key