core

package

v1.3.0 Latest Latest Go to latest Published: Apr 17, 2024 License: Apache-2.0 Imports: 4 Imported by: 0

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Repository

github.com/zmloong/lotus

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Open Source Insights

Documentation ¶

Index ¶

Constants
func NewMatrixInt(row, col int) [][]int
func NewMatrixfloat64(row, col int) [][]float64
type DataSet
- func NewDataSet(data map[uint32]map[uint32]float64) (set *DataSet)
type DataSetInterface
type Indexer
- func NewIndexer() *Indexer
type MarginalSubSet
- func NewMarginalSubSet(indexer *Indexer, subset []int) *MarginalSubSet
type MaxHeap
- func NewMaxHeap(k int) *MaxHeap
type RandomGenerator
- func NewRandomGenerator(seed int64) RandomGenerator
- func (rng RandomGenerator) NewNormalMatrix(row, col int, mean, stdDev float64) [][]float64
- func (rng RandomGenerator) NewNormalVector(size int, mean, stdDev float64) []float64

Constants ¶

View Source

const NotId = -1

Variables ¶

This section is empty.

Functions ¶

func NewMatrixInt ¶

func NewMatrixInt(row, col int) [][]int

func NewMatrixfloat64 ¶

func NewMatrixfloat64(row, col int) [][]float64

Types ¶

type DataSet ¶

type DataSet struct {
	// contains filtered or unexported fields
}

func NewDataSet ¶

func NewDataSet(data map[uint32]map[uint32]float64) (set *DataSet)

func (*DataSet) Count ¶

func (set *DataSet) Count() int

func (*DataSet) GetWithIndex ¶

func (set *DataSet) GetWithIndex(i int) (userindex int, itemindex int, score float64)

func (*DataSet) GlobalMean ¶

func (set *DataSet) GlobalMean() float64

func (*DataSet) Item ¶

func (set *DataSet) Item(itemId uint32) *MarginalSubSet

func (*DataSet) ItemByIndex ¶

func (set *DataSet) ItemByIndex(itemIndex int) *MarginalSubSet

func (*DataSet) ItemCount ¶

func (set *DataSet) ItemCount() int

func (*DataSet) ItemIndexer ¶

func (set *DataSet) ItemIndexer() *Indexer

func (*DataSet) Items ¶

func (set *DataSet) Items() []*MarginalSubSet

func (*DataSet) User ¶

func (set *DataSet) User(userId uint32) *MarginalSubSet

func (*DataSet) UserByIndex ¶

func (set *DataSet) UserByIndex(userIndex int) *MarginalSubSet

func (*DataSet) UserCount ¶

func (set *DataSet) UserCount() int

func (*DataSet) UserIndexer ¶

func (set *DataSet) UserIndexer() *Indexer

func (*DataSet) Users ¶

func (set *DataSet) Users() []*MarginalSubSet

type DataSetInterface ¶

type DataSetInterface interface {
	Count() int
	GlobalMean() float64
	UserCount() int
	ItemCount() int
	Users() []*MarginalSubSet
	Items() []*MarginalSubSet
	UserIndexer() *Indexer
	ItemIndexer() *Indexer
	User(userId uint32) *MarginalSubSet
	Item(itemId uint32) *MarginalSubSet
	UserByIndex(userIndex int) *MarginalSubSet
	ItemByIndex(itemIndex int) *MarginalSubSet
	GetWithIndex(i int) (int, int, float64)
}

type Indexer ¶

type Indexer struct {
	Indices map[uint32]int
	Ids     []uint32
}

func NewIndexer ¶

func NewIndexer() *Indexer

func (*Indexer) Add ¶

func (set *Indexer) Add(id uint32) int

func (*Indexer) Len ¶

func (set *Indexer) Len() int

func (*Indexer) ToID ¶

func (set *Indexer) ToID(index int) uint32

func (*Indexer) ToIndex ¶

func (set *Indexer) ToIndex(id uint32) int

type MarginalSubSet ¶

type MarginalSubSet struct {
	Indexer *Indexer
	SubSet  []int
}

func NewMarginalSubSet ¶

func NewMarginalSubSet(indexer *Indexer, subset []int) *MarginalSubSet

func (*MarginalSubSet) Contain ¶

func (set *MarginalSubSet) Contain(id uint32) bool

func (*MarginalSubSet) GetID ¶

func (set *MarginalSubSet) GetID(i int) uint32

func (*MarginalSubSet) GetIndex ¶

func (set *MarginalSubSet) GetIndex(i int) int

func (*MarginalSubSet) Len ¶

func (set *MarginalSubSet) Len() int

func (*MarginalSubSet) Less ¶

func (set *MarginalSubSet) Less(i, j int) bool

func (*MarginalSubSet) Swap ¶

func (set *MarginalSubSet) Swap(i, j int)

type MaxHeap ¶

type MaxHeap struct {
	Elem  []interface{} // store elements
	Score []float64     // store scores
	K     int           // the size of heap
}

func NewMaxHeap ¶

func NewMaxHeap(k int) *MaxHeap

func (*MaxHeap) Add ¶

func (maxHeap *MaxHeap) Add(elem interface{}, score float64)

func (*MaxHeap) Len ¶

func (maxHeap *MaxHeap) Len() int

func (*MaxHeap) Less ¶

func (maxHeap *MaxHeap) Less(i, j int) bool

func (*MaxHeap) Pop ¶

func (maxHeap *MaxHeap) Pop() interface{}

func (*MaxHeap) Push ¶

func (maxHeap *MaxHeap) Push(x interface{})

func (*MaxHeap) Swap ¶

func (maxHeap *MaxHeap) Swap(i, j int)

func (*MaxHeap) ToSorted ¶

func (maxHeap *MaxHeap) ToSorted() ([]interface{}, []float64)

type RandomGenerator ¶

type RandomGenerator struct {
	*rand.Rand
}

func NewRandomGenerator ¶

func NewRandomGenerator(seed int64) RandomGenerator

func (RandomGenerator) NewNormalMatrix ¶

func (rng RandomGenerator) NewNormalMatrix(row, col int, mean, stdDev float64) [][]float64

func (RandomGenerator) NewNormalVector ¶

func (rng RandomGenerator) NewNormalVector(size int, mean, stdDev float64) []float64

Source Files ¶

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