Class Sparse
Inheritance
System.Object
Sparse
Assembly: ISynergy.Framework.Mathematics.dll
Syntax
public static class Sparse : object
Methods
View Source
Columns<T>(Sparse<T>[])
Gets the maximum number of columns (dimensions)
that can be inferred from the given sparse vectors.
Declaration
public static int Columns<T>(this Sparse<T>[] inputs)
where T : IEquatable<T>
Parameters
| Type |
Name |
Description |
| Sparse<T>[] |
inputs |
|
Returns
| Type |
Description |
| System.Int32 |
|
Type Parameters
View Source
FromDense<T>(T[], Boolean)
Creates a sparse vector from a dense array.
Declaration
public static Sparse<T> FromDense<T>(T[] dense, bool removeZeros = true)
where T : IEquatable<T>
Parameters
| Type |
Name |
Description |
| T[] |
dense |
|
| System.Boolean |
removeZeros |
|
Returns
Type Parameters
View Source
FromDense<T>(T[][], Boolean)
Creates sparse vectors from dense arrays.
Declaration
public static Sparse<T>[] FromDense<T>(T[][] dense, bool removeZeros = true)
where T : IEquatable<T>
Parameters
| Type |
Name |
Description |
| T[][] |
dense |
|
| System.Boolean |
removeZeros |
|
Returns
Type Parameters
View Source
FromDictionary(IDictionary<Int32, Int32>)
Creates a sparse vector from a dictionary mapping indices to values.
Declaration
public static Sparse<double> FromDictionary(IDictionary<int, int> dictionary)
Parameters
| Type |
Name |
Description |
| IDictionary<System.Int32, System.Int32> |
dictionary |
|
Returns
| Type |
Description |
| Sparse<System.Double> |
|
View Source
Parse(String, Nullable<Double>)
Parses a string containing a sparse array in LibSVM
format into a Sparse<T> vector.
Declaration
public static Sparse<double> Parse(string values, double? insertValueAtBeginning = null)
Parameters
| Type |
Name |
Description |
| System.String |
values |
An array of "index:value" strings indicating
where each value belongs in the sparse vector.
|
| System.Nullable<System.Double> |
insertValueAtBeginning |
Whether an intercept term should be added
at the beginning of the vector.
|
Returns
| Type |
Description |
| Sparse<System.Double> |
|
View Source
Parse(String[], Nullable<Double>)
Parses a string containing a sparse array in LibSVM
format into a Sparse<T> vector.
Declaration
public static Sparse<double> Parse(string[] values, double? insertValueAtBeginning = null)
Parameters
| Type |
Name |
Description |
| System.String[] |
values |
An array of "index:value" strings indicating
where each value belongs in the sparse vector.
|
| System.Nullable<System.Double> |
insertValueAtBeginning |
Whether an intercept term should be added
at the beginning of the vector.
|
Returns
| Type |
Description |
| Sparse<System.Double> |
|
View Source
ToDense<T>(Sparse<T>[])
Converts an array of sparse vectors into a jagged matrix.
Declaration
public static T[][] ToDense<T>(this Sparse<T>[] vectors)
where T : IEquatable<T>
Parameters
| Type |
Name |
Description |
| Sparse<T>[] |
vectors |
|
Returns
Type Parameters
View Source
ToDense<T>(Sparse<T>[], Int32)
Converts an array of sparse vectors into a jagged matrix.
Declaration
public static T[][] ToDense<T>(this Sparse<T>[] vectors, int length)
where T : IEquatable<T>
Parameters
| Type |
Name |
Description |
| Sparse<T>[] |
vectors |
|
| System.Int32 |
length |
|
Returns
Type Parameters
