hnsw

Documentation

Index

• Constants
• func ParseAndValidateConfig(input interface{}) (schema.VectorIndexConfig, error)
• func ValidEncoder(encoder string) (ssdhelpers.Encoder, error)
• func ValidEncoderDistribution(distribution string) (ssdhelpers.EncoderDistribution, error)
• type PQConfig
• type PQEncoder
• type UserConfig
  • func NewDefaultUserConfig() UserConfig
  • func (u UserConfig) IndexType() string
  • func (u *UserConfig) SetDefaults()

Constants

const (
	DistanceCosine    = "cosine"
	DistanceDot       = "dot"
	DistanceL2Squared = "l2-squared"
	DistanceManhattan = "manhattan"
	DistanceHamming   = "hamming"
)

const (
	// Set these defaults if the user leaves them blank
	DefaultCleanupIntervalSeconds = 5 * 60
	DefaultMaxConnections         = 64
	DefaultEFConstruction         = 128
	DefaultEF                     = -1 // indicates "let Weaviate pick"
	DefaultDynamicEFMin           = 100
	DefaultDynamicEFMax           = 500
	DefaultDynamicEFFactor        = 8
	DefaultVectorCacheMaxObjects  = 1e12
	DefaultSkip                   = false
	DefaultFlatSearchCutoff       = 40000
	DefaultDistanceMetric         = DistanceCosine

	// Fail validation if those criteria are not met
	MinmumMaxConnections = 4
	MinmumEFConstruction = 4
)

const (
	DefaultPQEnabled             = false
	DefaultPQBitCompression      = false
	DefaultPQSegments            = 0
	DefaultPQEncoderType         = "kmeans"
	DefaultPQEncoderDistribution = "log-normal"
	DefaultPQCentroids           = 256
)

Functions

func ParseAndValidateConfig

func ParseAndValidateConfig(input interface{}) (schema.VectorIndexConfig, error)

ParseAndValidateConfig from an unknown input value, as this is not further specified in the API to allow of exchanging the index type

func ValidEncoder

func ValidEncoder(encoder string) (ssdhelpers.Encoder, error)

func ValidEncoderDistribution

func ValidEncoderDistribution(distribution string) (ssdhelpers.EncoderDistribution, error)

Types

type PQConfig

type PQConfig struct {
	Enabled        bool      `json:"enabled"`
	BitCompression bool      `json:"bitCompression"`
	Segments       int       `json:"segments"`
	Centroids      int       `json:"centroids"`
	Encoder        PQEncoder `json:"encoder"`
}

Product Quantization configuration

type PQEncoder

type PQEncoder struct {
	Type         string `json:"type"`
	Distribution string `json:"distribution,omitempty"`
}

Product Quantization encoder configuration

type UserConfig

type UserConfig struct {
	Skip                   bool     `json:"skip"`
	CleanupIntervalSeconds int      `json:"cleanupIntervalSeconds"`
	MaxConnections         int      `json:"maxConnections"`
	EFConstruction         int      `json:"efConstruction"`
	EF                     int      `json:"ef"`
	DynamicEFMin           int      `json:"dynamicEfMin"`
	DynamicEFMax           int      `json:"dynamicEfMax"`
	DynamicEFFactor        int      `json:"dynamicEfFactor"`
	VectorCacheMaxObjects  int      `json:"vectorCacheMaxObjects"`
	FlatSearchCutoff       int      `json:"flatSearchCutoff"`
	Distance               string   `json:"distance"`
	PQ                     PQConfig `json:"pq"`
}

UserConfig bundles all values settable by a user in the per-class settings

func NewDefaultUserConfig

func NewDefaultUserConfig() UserConfig

func (UserConfig) IndexType

func (u UserConfig) IndexType() string

IndexType returns the type of the underlying vector index, thus making sure the schema.VectorIndexConfig interface is implemented

func (*UserConfig) SetDefaults

func (u *UserConfig) SetDefaults()

SetDefaults in the user-specifyable part of the config