Package com.apple.foundationdb.async.guardiann

Record Class Config

java.lang.Object

java.lang.Record

com.apple.foundationdb.async.guardiann.Config

Record Components:

metric - the metric in use for this Guardiann structure

numDimensions - the number of dimensions of the vectors stored

primaryClusterMin - minimum number of primary vectors in a cluster, underflow will result in a merge task to be enqueued

primaryClusterMax - maximum number of primary vectors in a cluster, overflow will result in a split task to be enqueued

underreplicatedPrimaryClusterMax - maximum number of under-replicated primary vectors in a cluster, overflow will result in a reassign task to be enqueued

replicatedClusterMaxWrites - maximum number of writes of replicated vectors to a cluster

replicatedClusterTarget - the number of replicated clusters we target whenever a split/merge or a reassign task is executed

replicationPriorityMin - minimum threshold for the replication priority score

replicationDistanceRatioWeight - weight of the border-proximity distance ratio term in the replication priority score

replicationZScoreWeight - weight of the distance z-score term in the replication priority score

replicationStatsMinSampleSize - minimum number of primary vectors in a cluster before its distance statistics (mean/standard deviation) are trusted for the replication priority z-score term

sampleVectorStatsProbability - probability of sampling a vector write for statistics computation

maintainStatsProbability - probability of maintaining statistics when inserting a vector

statsThreshold - number of sampled vectors that triggers centroid computation

useRaBitQ - indicator if we should use RaBitQ quantization

raBitQNumExBits - number of extra bits per dimension for RaBitQ encoding

deterministicRandomness - whether randomness should always be deterministic (for debugging/replay)

sampleBatchSize - number of sampled vectors consumed per statistics-computation pass

insertMaxCandidateClusters - maximum clusters evaluated as insertion targets

deleteMaxCandidateClusters - maximum clusters probed when locating a vector's references during delete

deleteConcurrency - concurrency for parallel operations during delete

splitNumNearestClusters - number of nearest clusters fetched from HNSW for split candidate evaluation

mergeNumNearestClusters - number of nearest clusters fetched from HNSW for merge candidate evaluation

kMeansMaxIterations - maximum Lloyd's iterations per k-means restart

kMeansMaxRestarts - maximum number of random restarts for bounded k-means during split/merge

reassignNumNeighboringClusters - outer clusters considered as replication/migration targets during reassign

collapseMinDuplicates - minimum identical vectors sharing a signature before collapse

splitMergeConcurrency - concurrency for parallel operations during split/merge tasks

reassignConcurrency - concurrency for parallel operations during reassign tasks

collapseConcurrency - concurrency for parallel operations during collapse tasks

bounceConcurrency - concurrency for parallel operations during bounce tasks

constructionSearchConfig - centroid-walk tuning (SearchConfig) for the non-search insert/delete/maintenance paths, which probe the centroid HNSW without a per-query SearchConfig; only its centroidEf* knobs are consulted there

All Implemented Interfaces:

VectorEncodingConfig

public record Config(@Nonnull Metric metric, int numDimensions, int primaryClusterMin, int primaryClusterMax, int underreplicatedPrimaryClusterMax, int replicatedClusterMaxWrites, int replicatedClusterTarget, double replicationPriorityMin, double replicationDistanceRatioWeight, double replicationZScoreWeight, int replicationStatsMinSampleSize, double sampleVectorStatsProbability, double maintainStatsProbability, int statsThreshold, boolean useRaBitQ, int raBitQNumExBits, boolean deterministicRandomness, int sampleBatchSize, int insertMaxCandidateClusters, int deleteMaxCandidateClusters, int deleteConcurrency, int splitNumNearestClusters, int mergeNumNearestClusters, int kMeansMaxIterations, int kMeansMaxRestarts, int reassignNumNeighboringClusters, int collapseMinDuplicates, int splitMergeConcurrency, int reassignConcurrency, int collapseConcurrency, int bounceConcurrency, @Nonnull SearchConfig constructionSearchConfig)
extends Record
implements VectorEncodingConfig

Configuration for the Guardiann vector structure.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Config.ConfigBuilder	Builder for Config.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	DEFAULT_BOUNCE_CONCURRENCY
static final int	DEFAULT_COLLAPSE_CONCURRENCY
static final int	DEFAULT_COLLAPSE_MIN_DUPLICATES
static final SearchConfig	DEFAULT_CONSTRUCTION_SEARCH_CONFIG
static final int	DEFAULT_DELETE_CONCURRENCY
static final int	DEFAULT_DELETE_MAX_CANDIDATE_CLUSTERS
static final boolean	DEFAULT_DETERMINISTIC_RANDOMNESS
static final int	DEFAULT_INSERT_MAX_CANDIDATE_CLUSTERS
static final int	DEFAULT_KMEANS_MAX_ITERATIONS
static final int	DEFAULT_KMEANS_MAX_RESTARTS
static final double	DEFAULT_MAINTAIN_STATS_PROBABILITY
static final int	DEFAULT_MERGE_NUM_NEAREST_CLUSTERS
static final Metric	DEFAULT_METRIC
static final int	DEFAULT_PRIMARY_CLUSTER_MAX
static final int	DEFAULT_PRIMARY_CLUSTER_MIN
static final int	DEFAULT_RABITQ_NUM_EX_BITS
static final int	DEFAULT_REASSIGN_CONCURRENCY
static final int	DEFAULT_REASSIGN_NUM_NEIGHBORING_CLUSTERS
static final int	DEFAULT_REPLICATED_CLUSTER_MAX_WRITES
static final int	DEFAULT_REPLICATED_CLUSTER_TARGET
static final double	DEFAULT_REPLICATION_DISTANCE_RATIO_WEIGHT
static final double	DEFAULT_REPLICATION_PRIORITY_MIN
static final int	DEFAULT_REPLICATION_STATS_MIN_SAMPLE_SIZE
static final double	DEFAULT_REPLICATION_Z_SCORE_WEIGHT
static final int	DEFAULT_SAMPLE_BATCH_SIZE
static final double	DEFAULT_SAMPLE_VECTOR_STATS_PROBABILITY
static final int	DEFAULT_SPLIT_MERGE_CONCURRENCY
static final int	DEFAULT_SPLIT_NUM_NEAREST_CLUSTERS
static final int	DEFAULT_STATS_THRESHOLD
static final int	DEFAULT_UNDERREPLICATED_PRIMARY_CLUSTER_MAX
static final boolean	DEFAULT_USE_RABITQ

Constructor Summary

Constructors

Constructor

Description

Config(Metric metric, int numDimensions, int primaryClusterMin, int primaryClusterMax, int underreplicatedPrimaryClusterMax, int replicatedClusterMaxWrites, int replicatedClusterTarget, double replicationPriorityMin, double replicationDistanceRatioWeight, double replicationZScoreWeight, int replicationStatsMinSampleSize, double sampleVectorStatsProbability, double maintainStatsProbability, int statsThreshold, boolean useRaBitQ, int raBitQNumExBits, boolean deterministicRandomness, int sampleBatchSize, int insertMaxCandidateClusters, int deleteMaxCandidateClusters, int deleteConcurrency, int splitNumNearestClusters, int mergeNumNearestClusters, int kMeansMaxIterations, int kMeansMaxRestarts, int reassignNumNeighboringClusters, int collapseMinDuplicates, int splitMergeConcurrency, int reassignConcurrency, int collapseConcurrency, int bounceConcurrency, SearchConfig constructionSearchConfig)

Creates an instance of a Config record class.

Method Summary

Modifier and Type	Method	Description
int	bounceConcurrency()	Returns the value of the bounceConcurrency record component.
int	collapseConcurrency()	Returns the value of the collapseConcurrency record component.
int	collapseMinDuplicates()	Returns the value of the collapseMinDuplicates record component.
SearchConfig	constructionSearchConfig()	Returns the value of the constructionSearchConfig record component.
int	deleteConcurrency()	Returns the value of the deleteConcurrency record component.
int	deleteMaxCandidateClusters()	Returns the value of the deleteMaxCandidateClusters record component.
boolean	deterministicRandomness()	Returns the value of the deterministicRandomness record component.
final boolean	equals(Object o)	Indicates whether some other object is "equal to" this one.
final int	hashCode()	Returns a hash code value for this object.
int	insertMaxCandidateClusters()	Returns the value of the insertMaxCandidateClusters record component.
int	kMeansMaxIterations()	Returns the value of the kMeansMaxIterations record component.
int	kMeansMaxRestarts()	Returns the value of the kMeansMaxRestarts record component.
double	maintainStatsProbability()	Returns the value of the maintainStatsProbability record component.
int	mergeNumNearestClusters()	Returns the value of the mergeNumNearestClusters record component.
Metric	metric()	Returns the value of the metric record component.
int	numDimensions()	Returns the value of the numDimensions record component.
int	primaryClusterMax()	Returns the value of the primaryClusterMax record component.
int	primaryClusterMin()	Returns the value of the primaryClusterMin record component.
int	raBitQNumExBits()	Returns the value of the raBitQNumExBits record component.
int	reassignConcurrency()	Returns the value of the reassignConcurrency record component.
int	reassignNumNeighboringClusters()	Returns the value of the reassignNumNeighboringClusters record component.
int	replicatedClusterMaxWrites()	Returns the value of the replicatedClusterMaxWrites record component.
int	replicatedClusterTarget()	Returns the value of the replicatedClusterTarget record component.
double	replicationDistanceRatioWeight()	Returns the value of the replicationDistanceRatioWeight record component.
double	replicationPriorityMin()	Returns the value of the replicationPriorityMin record component.
int	replicationStatsMinSampleSize()	Returns the value of the replicationStatsMinSampleSize record component.
double	replicationZScoreWeight()	Returns the value of the replicationZScoreWeight record component.
int	sampleBatchSize()	Returns the value of the sampleBatchSize record component.
double	sampleVectorStatsProbability()	Returns the value of the sampleVectorStatsProbability record component.
int	splitMergeConcurrency()	Returns the value of the splitMergeConcurrency record component.
int	splitNumNearestClusters()	Returns the value of the splitNumNearestClusters record component.
int	statsThreshold()	Returns the value of the statsThreshold record component.
Config.ConfigBuilder	toBuilder()
String	toString()	Returns a string representation of this record class.
int	underreplicatedPrimaryClusterMax()	Returns the value of the underreplicatedPrimaryClusterMax record component.
boolean	useRaBitQ()	Returns the value of the useRaBitQ record component.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

DEFAULT_METRIC

@Nonnull
public static final Metric DEFAULT_METRIC

DEFAULT_PRIMARY_CLUSTER_MIN

public static final int DEFAULT_PRIMARY_CLUSTER_MIN

See Also:

• Constant Field Values

DEFAULT_PRIMARY_CLUSTER_MAX

public static final int DEFAULT_PRIMARY_CLUSTER_MAX

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DEFAULT_UNDERREPLICATED_PRIMARY_CLUSTER_MAX

public static final int DEFAULT_UNDERREPLICATED_PRIMARY_CLUSTER_MAX

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DEFAULT_REPLICATED_CLUSTER_MAX_WRITES

public static final int DEFAULT_REPLICATED_CLUSTER_MAX_WRITES

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DEFAULT_REPLICATED_CLUSTER_TARGET

public static final int DEFAULT_REPLICATED_CLUSTER_TARGET

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DEFAULT_REPLICATION_PRIORITY_MIN

public static final double DEFAULT_REPLICATION_PRIORITY_MIN

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DEFAULT_REPLICATION_DISTANCE_RATIO_WEIGHT

public static final double DEFAULT_REPLICATION_DISTANCE_RATIO_WEIGHT

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DEFAULT_REPLICATION_Z_SCORE_WEIGHT

public static final double DEFAULT_REPLICATION_Z_SCORE_WEIGHT

See Also:

• Constant Field Values

DEFAULT_REPLICATION_STATS_MIN_SAMPLE_SIZE

public static final int DEFAULT_REPLICATION_STATS_MIN_SAMPLE_SIZE

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DEFAULT_SAMPLE_VECTOR_STATS_PROBABILITY

public static final double DEFAULT_SAMPLE_VECTOR_STATS_PROBABILITY

See Also:

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DEFAULT_MAINTAIN_STATS_PROBABILITY

public static final double DEFAULT_MAINTAIN_STATS_PROBABILITY

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• Constant Field Values

DEFAULT_STATS_THRESHOLD

public static final int DEFAULT_STATS_THRESHOLD

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DEFAULT_USE_RABITQ

public static final boolean DEFAULT_USE_RABITQ

See Also:

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DEFAULT_RABITQ_NUM_EX_BITS

public static final int DEFAULT_RABITQ_NUM_EX_BITS

See Also:

• Constant Field Values

DEFAULT_DETERMINISTIC_RANDOMNESS

public static final boolean DEFAULT_DETERMINISTIC_RANDOMNESS

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DEFAULT_SAMPLE_BATCH_SIZE

public static final int DEFAULT_SAMPLE_BATCH_SIZE

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DEFAULT_INSERT_MAX_CANDIDATE_CLUSTERS

public static final int DEFAULT_INSERT_MAX_CANDIDATE_CLUSTERS

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DEFAULT_DELETE_MAX_CANDIDATE_CLUSTERS

public static final int DEFAULT_DELETE_MAX_CANDIDATE_CLUSTERS

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DEFAULT_DELETE_CONCURRENCY

public static final int DEFAULT_DELETE_CONCURRENCY

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DEFAULT_SPLIT_NUM_NEAREST_CLUSTERS

public static final int DEFAULT_SPLIT_NUM_NEAREST_CLUSTERS

See Also:

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DEFAULT_MERGE_NUM_NEAREST_CLUSTERS

public static final int DEFAULT_MERGE_NUM_NEAREST_CLUSTERS

See Also:

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DEFAULT_KMEANS_MAX_ITERATIONS

public static final int DEFAULT_KMEANS_MAX_ITERATIONS

See Also:

• Constant Field Values

DEFAULT_KMEANS_MAX_RESTARTS

public static final int DEFAULT_KMEANS_MAX_RESTARTS

See Also:

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DEFAULT_REASSIGN_NUM_NEIGHBORING_CLUSTERS

public static final int DEFAULT_REASSIGN_NUM_NEIGHBORING_CLUSTERS

See Also:

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DEFAULT_COLLAPSE_MIN_DUPLICATES

public static final int DEFAULT_COLLAPSE_MIN_DUPLICATES

See Also:

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DEFAULT_SPLIT_MERGE_CONCURRENCY

public static final int DEFAULT_SPLIT_MERGE_CONCURRENCY

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DEFAULT_REASSIGN_CONCURRENCY

public static final int DEFAULT_REASSIGN_CONCURRENCY

See Also:

• Constant Field Values

DEFAULT_COLLAPSE_CONCURRENCY

public static final int DEFAULT_COLLAPSE_CONCURRENCY

See Also:

• Constant Field Values

DEFAULT_BOUNCE_CONCURRENCY

public static final int DEFAULT_BOUNCE_CONCURRENCY

See Also:

• Constant Field Values

DEFAULT_CONSTRUCTION_SEARCH_CONFIG

@Nonnull
public static final SearchConfig DEFAULT_CONSTRUCTION_SEARCH_CONFIG

Constructor Details

Config

public Config(@Nonnull
 Metric metric,
 int numDimensions,
 int primaryClusterMin,
 int primaryClusterMax,
 int underreplicatedPrimaryClusterMax,
 int replicatedClusterMaxWrites,
 int replicatedClusterTarget,
 double replicationPriorityMin,
 double replicationDistanceRatioWeight,
 double replicationZScoreWeight,
 int replicationStatsMinSampleSize,
 double sampleVectorStatsProbability,
 double maintainStatsProbability,
 int statsThreshold,
 boolean useRaBitQ,
 int raBitQNumExBits,
 boolean deterministicRandomness,
 int sampleBatchSize,
 int insertMaxCandidateClusters,
 int deleteMaxCandidateClusters,
 int deleteConcurrency,
 int splitNumNearestClusters,
 int mergeNumNearestClusters,
 int kMeansMaxIterations,
 int kMeansMaxRestarts,
 int reassignNumNeighboringClusters,
 int collapseMinDuplicates,
 int splitMergeConcurrency,
 int reassignConcurrency,
 int collapseConcurrency,
 int bounceConcurrency,
 @Nonnull
 SearchConfig constructionSearchConfig)

Creates an instance of a Config record class.

Parameters:

metric - the value for the metric record component

numDimensions - the value for the numDimensions record component

primaryClusterMin - the value for the primaryClusterMin record component

primaryClusterMax - the value for the primaryClusterMax record component

underreplicatedPrimaryClusterMax - the value for the underreplicatedPrimaryClusterMax record component

replicatedClusterMaxWrites - the value for the replicatedClusterMaxWrites record component

replicatedClusterTarget - the value for the replicatedClusterTarget record component

replicationPriorityMin - the value for the replicationPriorityMin record component

replicationDistanceRatioWeight - the value for the replicationDistanceRatioWeight record component

replicationZScoreWeight - the value for the replicationZScoreWeight record component

replicationStatsMinSampleSize - the value for the replicationStatsMinSampleSize record component

sampleVectorStatsProbability - the value for the sampleVectorStatsProbability record component

maintainStatsProbability - the value for the maintainStatsProbability record component

statsThreshold - the value for the statsThreshold record component

useRaBitQ - the value for the useRaBitQ record component

raBitQNumExBits - the value for the raBitQNumExBits record component

deterministicRandomness - the value for the deterministicRandomness record component

sampleBatchSize - the value for the sampleBatchSize record component

insertMaxCandidateClusters - the value for the insertMaxCandidateClusters record component

deleteMaxCandidateClusters - the value for the deleteMaxCandidateClusters record component

deleteConcurrency - the value for the deleteConcurrency record component

splitNumNearestClusters - the value for the splitNumNearestClusters record component

mergeNumNearestClusters - the value for the mergeNumNearestClusters record component

kMeansMaxIterations - the value for the kMeansMaxIterations record component

kMeansMaxRestarts - the value for the kMeansMaxRestarts record component

reassignNumNeighboringClusters - the value for the reassignNumNeighboringClusters record component

collapseMinDuplicates - the value for the collapseMinDuplicates record component

splitMergeConcurrency - the value for the splitMergeConcurrency record component

reassignConcurrency - the value for the reassignConcurrency record component

collapseConcurrency - the value for the collapseConcurrency record component

bounceConcurrency - the value for the bounceConcurrency record component

constructionSearchConfig - the value for the constructionSearchConfig record component

Method Details

toBuilder

@Nonnull
public Config.ConfigBuilder toBuilder()

toString

@Nonnull
public String toString()

Returns a string representation of this record class. The representation contains the name of the class, followed by the name and value of each of the record components.

Specified by:

toString in class Record

Returns:

a string representation of this object

hashCode

public final int hashCode()

Returns a hash code value for this object. The value is derived from the hash code of each of the record components.

Specified by:

hashCode in class Record

Returns:

a hash code value for this object

equals

public final boolean equals(Object o)

Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. Reference components are compared with Objects::equals(Object,Object); primitive components are compared with '=='.

Specified by:

equals in class Record

Parameters:

o - the object with which to compare

Returns:

true if this object is the same as the o argument; false otherwise.

metric

@Nonnull
public Metric metric()

Returns the value of the metric record component.

Specified by:

metric in interface VectorEncodingConfig

Returns:

the value of the metric record component

numDimensions

public int numDimensions()

Returns the value of the numDimensions record component.

Specified by:

numDimensions in interface VectorEncodingConfig

Returns:

the value of the numDimensions record component

primaryClusterMin

public int primaryClusterMin()

Returns the value of the primaryClusterMin record component.

Returns:

the value of the primaryClusterMin record component

primaryClusterMax

public int primaryClusterMax()

Returns the value of the primaryClusterMax record component.

Returns:

the value of the primaryClusterMax record component

underreplicatedPrimaryClusterMax

public int underreplicatedPrimaryClusterMax()

Returns the value of the underreplicatedPrimaryClusterMax record component.

Returns:

the value of the underreplicatedPrimaryClusterMax record component

replicatedClusterMaxWrites

public int replicatedClusterMaxWrites()

Returns the value of the replicatedClusterMaxWrites record component.

Returns:

the value of the replicatedClusterMaxWrites record component

replicatedClusterTarget

public int replicatedClusterTarget()

Returns the value of the replicatedClusterTarget record component.

Returns:

the value of the replicatedClusterTarget record component

replicationPriorityMin

public double replicationPriorityMin()

Returns the value of the replicationPriorityMin record component.

Returns:

the value of the replicationPriorityMin record component

replicationDistanceRatioWeight

public double replicationDistanceRatioWeight()

Returns the value of the replicationDistanceRatioWeight record component.

Returns:

the value of the replicationDistanceRatioWeight record component

replicationZScoreWeight

public double replicationZScoreWeight()

Returns the value of the replicationZScoreWeight record component.

Returns:

the value of the replicationZScoreWeight record component

replicationStatsMinSampleSize

public int replicationStatsMinSampleSize()

Returns the value of the replicationStatsMinSampleSize record component.

Returns:

the value of the replicationStatsMinSampleSize record component

sampleVectorStatsProbability

public double sampleVectorStatsProbability()

Returns the value of the sampleVectorStatsProbability record component.

Returns:

the value of the sampleVectorStatsProbability record component

maintainStatsProbability

public double maintainStatsProbability()

Returns the value of the maintainStatsProbability record component.

Returns:

the value of the maintainStatsProbability record component

statsThreshold

public int statsThreshold()

Returns the value of the statsThreshold record component.

Returns:

the value of the statsThreshold record component

useRaBitQ

public boolean useRaBitQ()

Returns the value of the useRaBitQ record component.

Specified by:

useRaBitQ in interface VectorEncodingConfig

Returns:

the value of the useRaBitQ record component

raBitQNumExBits

public int raBitQNumExBits()

Returns the value of the raBitQNumExBits record component.

Specified by:

raBitQNumExBits in interface VectorEncodingConfig

Returns:

the value of the raBitQNumExBits record component

deterministicRandomness

public boolean deterministicRandomness()

Returns the value of the deterministicRandomness record component.

Returns:

the value of the deterministicRandomness record component

sampleBatchSize

public int sampleBatchSize()

Returns the value of the sampleBatchSize record component.

Returns:

the value of the sampleBatchSize record component

insertMaxCandidateClusters

public int insertMaxCandidateClusters()

Returns the value of the insertMaxCandidateClusters record component.

Returns:

the value of the insertMaxCandidateClusters record component

deleteMaxCandidateClusters

public int deleteMaxCandidateClusters()

Returns the value of the deleteMaxCandidateClusters record component.

Returns:

the value of the deleteMaxCandidateClusters record component

deleteConcurrency

public int deleteConcurrency()

Returns the value of the deleteConcurrency record component.

Returns:

the value of the deleteConcurrency record component

splitNumNearestClusters

public int splitNumNearestClusters()

Returns the value of the splitNumNearestClusters record component.

Returns:

the value of the splitNumNearestClusters record component

mergeNumNearestClusters

public int mergeNumNearestClusters()

Returns the value of the mergeNumNearestClusters record component.

Returns:

the value of the mergeNumNearestClusters record component

kMeansMaxIterations

public int kMeansMaxIterations()

Returns the value of the kMeansMaxIterations record component.

Returns:

the value of the kMeansMaxIterations record component

kMeansMaxRestarts

public int kMeansMaxRestarts()

Returns the value of the kMeansMaxRestarts record component.

Returns:

the value of the kMeansMaxRestarts record component

reassignNumNeighboringClusters

public int reassignNumNeighboringClusters()

Returns the value of the reassignNumNeighboringClusters record component.

Returns:

the value of the reassignNumNeighboringClusters record component

collapseMinDuplicates

public int collapseMinDuplicates()

Returns the value of the collapseMinDuplicates record component.

Returns:

the value of the collapseMinDuplicates record component

splitMergeConcurrency

public int splitMergeConcurrency()

Returns the value of the splitMergeConcurrency record component.

Returns:

the value of the splitMergeConcurrency record component

reassignConcurrency

public int reassignConcurrency()

Returns the value of the reassignConcurrency record component.

Returns:

the value of the reassignConcurrency record component

collapseConcurrency

public int collapseConcurrency()

Returns the value of the collapseConcurrency record component.

Returns:

the value of the collapseConcurrency record component

bounceConcurrency

public int bounceConcurrency()

Returns the value of the bounceConcurrency record component.

Returns:

the value of the bounceConcurrency record component

constructionSearchConfig

@Nonnull
public SearchConfig constructionSearchConfig()

Returns the value of the constructionSearchConfig record component.

Returns:

the value of the constructionSearchConfig record component