NormalizationCatalog.NormalizeRobustScaling Metode
Definisi
Penting
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Overload
| NormalizeRobustScaling(TransformsCatalog, InputOutputColumnPair[], Int64, Boolean, UInt32, UInt32) |
Buat NormalizingEstimator, yang menormalkan menggunakan statistik yang kuat untuk outlier dengan memusatkan data sekitar 0 (menghapus median) dan menskalakan data sesuai dengan rentang kuantil (default ke rentang interkurtile). |
| NormalizeRobustScaling(TransformsCatalog, String, String, Int64, Boolean, UInt32, UInt32) |
Buat NormalizingEstimator, yang menormalkan menggunakan statistik yang kuat untuk outlier dengan memusatkan data sekitar 0 (menghapus median) dan menskalakan data sesuai dengan rentang kuantil (default ke rentang interkurtile). |
NormalizeRobustScaling(TransformsCatalog, InputOutputColumnPair[], Int64, Boolean, UInt32, UInt32)
- Sumber:
- NormalizerCatalog.cs
- Sumber:
- NormalizerCatalog.cs
- Sumber:
- NormalizerCatalog.cs
Buat NormalizingEstimator, yang menormalkan menggunakan statistik yang kuat untuk outlier dengan memusatkan data sekitar 0 (menghapus median) dan menskalakan data sesuai dengan rentang kuantil (default ke rentang interkurtile).
public static Microsoft.ML.Transforms.NormalizingEstimator NormalizeRobustScaling(this Microsoft.ML.TransformsCatalog catalog, Microsoft.ML.InputOutputColumnPair[] columns, long maximumExampleCount = 1000000000, bool centerData = true, uint quantileMin = 25, uint quantileMax = 75);static member NormalizeRobustScaling : Microsoft.ML.TransformsCatalog * Microsoft.ML.InputOutputColumnPair[] * int64 * bool * uint32 * uint32 -> Microsoft.ML.Transforms.NormalizingEstimator<Extension()>
Public Function NormalizeRobustScaling (catalog As TransformsCatalog, columns As InputOutputColumnPair(), Optional maximumExampleCount As Long = 1000000000, Optional centerData As Boolean = true, Optional quantileMin As UInteger = 25, Optional quantileMax As UInteger = 75) As NormalizingEstimatorParameter
- catalog
- TransformsCatalog
Katalog transformasi
- columns
- InputOutputColumnPair[]
Pasangan kolom input dan output. Kolom input harus berjenis Singledata , Double atau vektor berukuran dikenal dari jenis tersebut. Jenis data untuk kolom output akan sama dengan kolom input terkait.
- maximumExampleCount
- Int64
Jumlah maksimum contoh yang digunakan untuk melatih normalizer.
- centerData
- Boolean
Apakah akan mempusat data sekitar 0 akan menghapus median. Default ke true.
- quantileMin
- UInt32
Kuantil min digunakan untuk menskalakan data. Default ke 25.
- quantileMax
- UInt32
Maksimal kuantil yang digunakan untuk menskalakan data. Default ke 75.
Mengembalikan
Contoh
using System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using Microsoft.ML;
using Microsoft.ML.Data;
using static Microsoft.ML.Transforms.NormalizingTransformer;
namespace Samples.Dynamic
{
public class NormalizeBinningMulticolumn
{
public static void Example()
{
// Create a new ML context, for ML.NET operations. It can be used for
// exception tracking and logging, as well as the source of randomness.
var mlContext = new MLContext();
var samples = new List<DataPoint>()
{
new DataPoint(){ Features = new float[4] { 8, 1, 3, 0},
Features2 = 1 },
new DataPoint(){ Features = new float[4] { 6, 2, 2, 0},
Features2 = 4 },
new DataPoint(){ Features = new float[4] { 4, 0, 1, 0},
Features2 = 1 },
new DataPoint(){ Features = new float[4] { 2,-1,-1, 1},
Features2 = 2 }
};
// Convert training data to IDataView, the general data type used in
// ML.NET.
var data = mlContext.Data.LoadFromEnumerable(samples);
// NormalizeBinning normalizes the data by constructing equidensity bins
// and produce output based on to which bin the original value belongs.
var normalize = mlContext.Transforms.NormalizeBinning(new[]{
new InputOutputColumnPair("Features"),
new InputOutputColumnPair("Features2"),
},
maximumBinCount: 4, fixZero: false);
// Now we can transform the data and look at the output to confirm the
// behavior of the estimator. This operation doesn't actually evaluate
// data until we read the data below.
var normalizeTransform = normalize.Fit(data);
var transformedData = normalizeTransform.Transform(data);
var column = transformedData.GetColumn<float[]>("Features").ToArray();
var column2 = transformedData.GetColumn<float>("Features2").ToArray();
for (int i = 0; i < column.Length; i++)
Console.WriteLine(string.Join(", ", column[i].Select(x => x
.ToString("f4"))) + "\t\t" + column2[i]);
// Expected output:
//
// Features Feature2
// 1.0000, 0.6667, 1.0000, 0.0000 0
// 0.6667, 1.0000, 0.6667, 0.0000 1
// 0.3333, 0.3333, 0.3333, 0.0000 0
// 0.0000, 0.0000, 0.0000, 1.0000 0.5
}
private class DataPoint
{
[VectorType(4)]
public float[] Features { get; set; }
public float Features2 { get; set; }
}
}
}
Berlaku untuk
NormalizeRobustScaling(TransformsCatalog, String, String, Int64, Boolean, UInt32, UInt32)
- Sumber:
- NormalizerCatalog.cs
- Sumber:
- NormalizerCatalog.cs
- Sumber:
- NormalizerCatalog.cs
Buat NormalizingEstimator, yang menormalkan menggunakan statistik yang kuat untuk outlier dengan memusatkan data sekitar 0 (menghapus median) dan menskalakan data sesuai dengan rentang kuantil (default ke rentang interkurtile).
public static Microsoft.ML.Transforms.NormalizingEstimator NormalizeRobustScaling(this Microsoft.ML.TransformsCatalog catalog, string outputColumnName, string inputColumnName = default, long maximumExampleCount = 1000000000, bool centerData = true, uint quantileMin = 25, uint quantileMax = 75);static member NormalizeRobustScaling : Microsoft.ML.TransformsCatalog * string * string * int64 * bool * uint32 * uint32 -> Microsoft.ML.Transforms.NormalizingEstimator<Extension()>
Public Function NormalizeRobustScaling (catalog As TransformsCatalog, outputColumnName As String, Optional inputColumnName As String = Nothing, Optional maximumExampleCount As Long = 1000000000, Optional centerData As Boolean = true, Optional quantileMin As UInteger = 25, Optional quantileMax As UInteger = 75) As NormalizingEstimatorParameter
- catalog
- TransformsCatalog
Katalog transformasi
- outputColumnName
- String
Nama kolom yang dihasilkan dari transformasi inputColumnName.
Jenis data pada kolom ini sama dengan kolom input.
- inputColumnName
- String
Nama kolom yang akan diubah. Jika diatur ke null, nilai outputColumnName akan digunakan sebagai sumber.
Jenis data pada kolom ini harus Single, Double atau vektor berukuran dikenal dari jenis tersebut.
- maximumExampleCount
- Int64
Jumlah maksimum contoh yang digunakan untuk melatih normalizer.
- centerData
- Boolean
Apakah akan mempusatkan data sekitar 0 dengan menghapus median. Default ke true.
- quantileMin
- UInt32
Kuantil min digunakan untuk menskalakan data. Default ke 25.
- quantileMax
- UInt32
Maksimal kuantil yang digunakan untuk menskalakan data. Default ke 75.
Mengembalikan
Contoh
using System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using Microsoft.ML;
using Microsoft.ML.Data;
using static Microsoft.ML.Transforms.NormalizingTransformer;
namespace Samples.Dynamic
{
public class NormalizeSupervisedBinning
{
public static void Example()
{
// Create a new ML context, for ML.NET operations. It can be used for
// exception tracking and logging, as well as the source of randomness.
var mlContext = new MLContext();
var samples = new List<DataPoint>()
{
new DataPoint(){ Features = new float[4] { 8, 1, 3, 0},
Bin ="Bin1" },
new DataPoint(){ Features = new float[4] { 6, 2, 2, 1},
Bin ="Bin2" },
new DataPoint(){ Features = new float[4] { 5, 3, 0, 2},
Bin ="Bin2" },
new DataPoint(){ Features = new float[4] { 4,-8, 1, 3},
Bin ="Bin3" },
new DataPoint(){ Features = new float[4] { 2,-5,-1, 4},
Bin ="Bin3" }
};
// Convert training data to IDataView, the general data type used in
// ML.NET.
var data = mlContext.Data.LoadFromEnumerable(samples);
// Let's transform "Bin" column from string to key.
data = mlContext.Transforms.Conversion.MapValueToKey("Bin").Fit(data)
.Transform(data);
// NormalizeSupervisedBinning normalizes the data by constructing bins
// based on correlation with the label column and produce output based
// on to which bin original value belong.
var normalize = mlContext.Transforms.NormalizeSupervisedBinning(
"Features", labelColumnName: "Bin", mininimumExamplesPerBin: 1,
fixZero: false);
// NormalizeSupervisedBinning normalizes the data by constructing bins
// based on correlation with the label column and produce output based
// on to which bin original value belong but make sure zero values would
// remain zero after normalization. Helps preserve sparsity.
var normalizeFixZero = mlContext.Transforms.NormalizeSupervisedBinning(
"Features", labelColumnName: "Bin", mininimumExamplesPerBin: 1,
fixZero: true);
// Now we can transform the data and look at the output to confirm the
// behavior of the estimator. This operation doesn't actually evaluate
// data until we read the data below.
var normalizeTransform = normalize.Fit(data);
var transformedData = normalizeTransform.Transform(data);
var normalizeFixZeroTransform = normalizeFixZero.Fit(data);
var fixZeroData = normalizeFixZeroTransform.Transform(data);
var column = transformedData.GetColumn<float[]>("Features").ToArray();
foreach (var row in column)
Console.WriteLine(string.Join(", ", row.Select(x => x.ToString(
"f4"))));
// Expected output:
// 1.0000, 0.5000, 1.0000, 0.0000
// 0.5000, 1.0000, 0.0000, 0.5000
// 0.5000, 1.0000, 0.0000, 0.5000
// 0.0000, 0.0000, 0.0000, 1.0000
// 0.0000, 0.0000, 0.0000, 1.0000
var columnFixZero = fixZeroData.GetColumn<float[]>("Features")
.ToArray();
foreach (var row in columnFixZero)
Console.WriteLine(string.Join(", ", row.Select(x => x.ToString(
"f4"))));
// Expected output:
// 1.0000, 0.0000, 1.0000, 0.0000
// 0.5000, 0.5000, 0.0000, 0.5000
// 0.5000, 0.5000, 0.0000, 0.5000
// 0.0000,-0.5000, 0.0000, 1.0000
// 0.0000,-0.5000, 0.0000, 1.0000
// Let's get transformation parameters. Since we work with only one
// column we need to pass 0 as parameter for
// GetNormalizerModelParameters.
// If we have multiple columns transformations we need to pass index of
// InputOutputColumnPair.
var transformParams = normalizeTransform.GetNormalizerModelParameters(0)
as BinNormalizerModelParameters<ImmutableArray<float>>;
Console.WriteLine($"The 1-index value in resulting array would be " +
$"produce by:");
Console.WriteLine("y = (Index(x) / " + transformParams.Density[0] +
") - " + (transformParams.Offset.Length == 0 ? 0 : transformParams
.Offset[0]));
Console.WriteLine("Where Index(x) is the index of the bin to which " +
"x belongs");
Console.WriteLine("Bins upper borders are: " + string.Join(" ",
transformParams.UpperBounds[0]));
// Expected output:
// The 1-index value in resulting array would be produce by:
// y = (Index(x) / 2) - 0
// Where Index(x) is the index of the bin to which x belongs
// Bins upper bounds are: 4.5 7 ∞
var fixZeroParams = normalizeFixZeroTransform
.GetNormalizerModelParameters(0) as BinNormalizerModelParameters<
ImmutableArray<float>>;
Console.WriteLine($"The 1-index value in resulting array would be " +
$"produce by:");
Console.WriteLine(" y = (Index(x) / " + fixZeroParams.Density[1] +
") - " + (fixZeroParams.Offset.Length == 0 ? 0 : fixZeroParams
.Offset[1]));
Console.WriteLine("Where Index(x) is the index of the bin to which x " +
"belongs");
Console.WriteLine("Bins upper borders are: " + string.Join(" ",
fixZeroParams.UpperBounds[1]));
// Expected output:
// The 1-index value in resulting array would be produce by:
// y = (Index(x) / 2) - 0.5
// Where Index(x) is the index of the bin to which x belongs
// Bins upper bounds are: -2 1.5 ∞
}
private class DataPoint
{
[VectorType(4)]
public float[] Features { get; set; }
public string Bin { get; set; }
}
}
}