TimeSeriesCatalog.DetectSpikeBySsa 메서드
정의
중요
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오버로드
DetectSpikeBySsa(TransformsCatalog, String, String, Double, Int32, Int32, Int32, AnomalySide, ErrorFunction)
SSA(단수 스펙트럼 분석)를 사용하여 시계열의 급증을 예측하는 CreateSsaSpikeEstimator.
public static Microsoft.ML.Transforms.TimeSeries.SsaSpikeEstimator DetectSpikeBySsa (this Microsoft.ML.TransformsCatalog catalog, string outputColumnName, string inputColumnName, double confidence, int pvalueHistoryLength, int trainingWindowSize, int seasonalityWindowSize, Microsoft.ML.Transforms.TimeSeries.AnomalySide side = Microsoft.ML.Transforms.TimeSeries.AnomalySide.TwoSided, Microsoft.ML.Transforms.TimeSeries.ErrorFunction errorFunction = Microsoft.ML.Transforms.TimeSeries.ErrorFunction.SignedDifference);static member DetectSpikeBySsa : Microsoft.ML.TransformsCatalog * string * string * double * int * int * int * Microsoft.ML.Transforms.TimeSeries.AnomalySide * Microsoft.ML.Transforms.TimeSeries.ErrorFunction -> Microsoft.ML.Transforms.TimeSeries.SsaSpikeEstimator<Extension()>
Public Function DetectSpikeBySsa (catalog As TransformsCatalog, outputColumnName As String, inputColumnName As String, confidence As Double, pvalueHistoryLength As Integer, trainingWindowSize As Integer, seasonalityWindowSize As Integer, Optional side As AnomalySide = Microsoft.ML.Transforms.TimeSeries.AnomalySide.TwoSided, Optional errorFunction As ErrorFunction = Microsoft.ML.Transforms.TimeSeries.ErrorFunction.SignedDifference) As SsaSpikeEstimator매개 변수
- catalog
- TransformsCatalog
변환의 카탈로그입니다.
- outputColumnName
- String
의 변환에서 생성된 열의 inputColumnName이름입니다.
열 데이터는 벡터입니다 Double. 벡터에는 경고(0이 아닌 값은 스파이크를 의미함), 원시 점수 및 p-값의 3가지 요소가 포함됩니다.
- inputColumnName
- String
변환할 열의 이름입니다. 열 데이터는 이어야 Single합니다.
이 값으로 null설정하면 해당 값이 outputColumnName 원본으로 사용됩니다.
- confidence
- Double
범위 [0, 100]의 스파이크 검색에 대한 신뢰도입니다.
- pvalueHistoryLength
- Int32
p-값을 계산하기 위한 슬라이딩 윈도우의 크기입니다.
- trainingWindowSize
- Int32
학습에 사용되는 시퀀스의 시작 지점 수입니다.
- seasonalityWindowSize
- Int32
입력 시계열에서 가장 큰 관련 계절성에 대한 상한입니다.
- side
- AnomalySide
양수 또는 음수 변칙을 검색할지 또는 둘 다를 검색할지를 결정하는 인수입니다.
- errorFunction
- ErrorFunction
예상 값과 관찰된 값 사이의 오류를 계산하는 데 사용되는 함수입니다.
반환
예제
using System;
using System.Collections.Generic;
using Microsoft.ML;
using Microsoft.ML.Data;
namespace Samples.Dynamic
{
public static class DetectSpikeBySsaBatchPrediction
{
// This example creates a time series (list of Data with the i-th element
// corresponding to the i-th time slot). The estimator is applied then to
// identify spiking points in the series. This estimator can account for
// temporal seasonality in the data.
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 ml = new MLContext();
// Generate sample series data with a recurring pattern and a spike
// within the pattern
const int SeasonalitySize = 5;
const int TrainingSeasons = 3;
const int TrainingSize = SeasonalitySize * TrainingSeasons;
var data = new List<TimeSeriesData>()
{
new TimeSeriesData(0),
new TimeSeriesData(1),
new TimeSeriesData(2),
new TimeSeriesData(3),
new TimeSeriesData(4),
new TimeSeriesData(0),
new TimeSeriesData(1),
new TimeSeriesData(2),
new TimeSeriesData(3),
new TimeSeriesData(4),
new TimeSeriesData(0),
new TimeSeriesData(1),
new TimeSeriesData(2),
new TimeSeriesData(3),
new TimeSeriesData(4),
//This is a spike.
new TimeSeriesData(100),
new TimeSeriesData(0),
new TimeSeriesData(1),
new TimeSeriesData(2),
new TimeSeriesData(3),
new TimeSeriesData(4),
};
// Convert data to IDataView.
var dataView = ml.Data.LoadFromEnumerable(data);
// Setup estimator arguments
var inputColumnName = nameof(TimeSeriesData.Value);
var outputColumnName = nameof(SsaSpikePrediction.Prediction);
// The transformed data.
var transformedData = ml.Transforms.DetectSpikeBySsa(outputColumnName,
inputColumnName, 95.0d, 8, TrainingSize, SeasonalitySize + 1).Fit(
dataView).Transform(dataView);
// Getting the data of the newly created column as an IEnumerable of
// SsaSpikePrediction.
var predictionColumn = ml.Data.CreateEnumerable<SsaSpikePrediction>(
transformedData, reuseRowObject: false);
Console.WriteLine($"{outputColumnName} column obtained " +
$"post-transformation.");
Console.WriteLine("Data\tAlert\tScore\tP-Value");
int k = 0;
foreach (var prediction in predictionColumn)
PrintPrediction(data[k++].Value, prediction);
// Prediction column obtained post-transformation.
// Data Alert Score P-Value
// 0 0 -2.53 0.50
// 1 0 -0.01 0.01
// 2 0 0.76 0.14
// 3 0 0.69 0.28
// 4 0 1.44 0.18
// 0 0 -1.84 0.17
// 1 0 0.22 0.44
// 2 0 0.20 0.45
// 3 0 0.16 0.47
// 4 0 1.33 0.18
// 0 0 -1.79 0.07
// 1 0 0.16 0.50
// 2 0 0.09 0.50
// 3 0 0.08 0.45
// 4 0 1.31 0.12
// 100 1 98.21 0.00 <-- alert is on, predicted spike
// 0 0 -13.83 0.29
// 1 0 -1.74 0.44
// 2 0 -0.47 0.46
// 3 0 -16.50 0.29
// 4 0 -29.82 0.21
}
private static void PrintPrediction(float value, SsaSpikePrediction
prediction) =>
Console.WriteLine("{0}\t{1}\t{2:0.00}\t{3:0.00}", value,
prediction.Prediction[0], prediction.Prediction[1],
prediction.Prediction[2]);
class TimeSeriesData
{
public float Value;
public TimeSeriesData(float value)
{
Value = value;
}
}
class SsaSpikePrediction
{
[VectorType(3)]
public double[] Prediction { get; set; }
}
}
}
적용 대상
DetectSpikeBySsa(TransformsCatalog, String, String, Int32, Int32, Int32, Int32, AnomalySide, ErrorFunction)
주의
This API method is deprecated, please use the overload with confidence parameter of type double.
SSA(단수 스펙트럼 분석)를 사용하여 시계열의 급증을 예측하는 CreateSsaSpikeEstimator.
[System.Obsolete("This API method is deprecated, please use the overload with confidence parameter of type double.")]
public static Microsoft.ML.Transforms.TimeSeries.SsaSpikeEstimator DetectSpikeBySsa (this Microsoft.ML.TransformsCatalog catalog, string outputColumnName, string inputColumnName, int confidence, int pvalueHistoryLength, int trainingWindowSize, int seasonalityWindowSize, Microsoft.ML.Transforms.TimeSeries.AnomalySide side = Microsoft.ML.Transforms.TimeSeries.AnomalySide.TwoSided, Microsoft.ML.Transforms.TimeSeries.ErrorFunction errorFunction = Microsoft.ML.Transforms.TimeSeries.ErrorFunction.SignedDifference);public static Microsoft.ML.Transforms.TimeSeries.SsaSpikeEstimator DetectSpikeBySsa (this Microsoft.ML.TransformsCatalog catalog, string outputColumnName, string inputColumnName, int confidence, int pvalueHistoryLength, int trainingWindowSize, int seasonalityWindowSize, Microsoft.ML.Transforms.TimeSeries.AnomalySide side = Microsoft.ML.Transforms.TimeSeries.AnomalySide.TwoSided, Microsoft.ML.Transforms.TimeSeries.ErrorFunction errorFunction = Microsoft.ML.Transforms.TimeSeries.ErrorFunction.SignedDifference);[<System.Obsolete("This API method is deprecated, please use the overload with confidence parameter of type double.")>]
static member DetectSpikeBySsa : Microsoft.ML.TransformsCatalog * string * string * int * int * int * int * Microsoft.ML.Transforms.TimeSeries.AnomalySide * Microsoft.ML.Transforms.TimeSeries.ErrorFunction -> Microsoft.ML.Transforms.TimeSeries.SsaSpikeEstimatorstatic member DetectSpikeBySsa : Microsoft.ML.TransformsCatalog * string * string * int * int * int * int * Microsoft.ML.Transforms.TimeSeries.AnomalySide * Microsoft.ML.Transforms.TimeSeries.ErrorFunction -> Microsoft.ML.Transforms.TimeSeries.SsaSpikeEstimator<Extension()>
Public Function DetectSpikeBySsa (catalog As TransformsCatalog, outputColumnName As String, inputColumnName As String, confidence As Integer, pvalueHistoryLength As Integer, trainingWindowSize As Integer, seasonalityWindowSize As Integer, Optional side As AnomalySide = Microsoft.ML.Transforms.TimeSeries.AnomalySide.TwoSided, Optional errorFunction As ErrorFunction = Microsoft.ML.Transforms.TimeSeries.ErrorFunction.SignedDifference) As SsaSpikeEstimator매개 변수
- catalog
- TransformsCatalog
변환의 카탈로그입니다.
- outputColumnName
- String
의 변환에서 생성된 열의 inputColumnName이름입니다.
열 데이터는 벡터입니다 Double. 벡터에는 경고(0이 아닌 값은 스파이크를 의미함), 원시 점수 및 p-값의 3가지 요소가 포함됩니다.
- inputColumnName
- String
변환할 열의 이름입니다. 열 데이터는 이어야 Single합니다.
이 값으로 null설정하면 해당 값이 outputColumnName 원본으로 사용됩니다.
- confidence
- Int32
범위 [0, 100]의 스파이크 검색에 대한 신뢰도입니다.
- pvalueHistoryLength
- Int32
p-값을 계산하기 위한 슬라이딩 윈도우의 크기입니다.
- trainingWindowSize
- Int32
학습에 사용되는 시퀀스의 시작 지점 수입니다.
- seasonalityWindowSize
- Int32
입력 시계열에서 가장 큰 관련 계절성에 대한 상한입니다.
- side
- AnomalySide
양수 또는 음수 변칙을 검색할지 또는 둘 다를 검색할지를 결정하는 인수입니다.
- errorFunction
- ErrorFunction
예상 값과 관찰된 값 사이의 오류를 계산하는 데 사용되는 함수입니다.
반환
- 특성
예제
using System;
using System.Collections.Generic;
using Microsoft.ML;
using Microsoft.ML.Data;
namespace Samples.Dynamic
{
public static class DetectSpikeBySsaBatchPrediction
{
// This example creates a time series (list of Data with the i-th element
// corresponding to the i-th time slot). The estimator is applied then to
// identify spiking points in the series. This estimator can account for
// temporal seasonality in the data.
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 ml = new MLContext();
// Generate sample series data with a recurring pattern and a spike
// within the pattern
const int SeasonalitySize = 5;
const int TrainingSeasons = 3;
const int TrainingSize = SeasonalitySize * TrainingSeasons;
var data = new List<TimeSeriesData>()
{
new TimeSeriesData(0),
new TimeSeriesData(1),
new TimeSeriesData(2),
new TimeSeriesData(3),
new TimeSeriesData(4),
new TimeSeriesData(0),
new TimeSeriesData(1),
new TimeSeriesData(2),
new TimeSeriesData(3),
new TimeSeriesData(4),
new TimeSeriesData(0),
new TimeSeriesData(1),
new TimeSeriesData(2),
new TimeSeriesData(3),
new TimeSeriesData(4),
//This is a spike.
new TimeSeriesData(100),
new TimeSeriesData(0),
new TimeSeriesData(1),
new TimeSeriesData(2),
new TimeSeriesData(3),
new TimeSeriesData(4),
};
// Convert data to IDataView.
var dataView = ml.Data.LoadFromEnumerable(data);
// Setup estimator arguments
var inputColumnName = nameof(TimeSeriesData.Value);
var outputColumnName = nameof(SsaSpikePrediction.Prediction);
// The transformed data.
var transformedData = ml.Transforms.DetectSpikeBySsa(outputColumnName,
inputColumnName, 95.0d, 8, TrainingSize, SeasonalitySize + 1).Fit(
dataView).Transform(dataView);
// Getting the data of the newly created column as an IEnumerable of
// SsaSpikePrediction.
var predictionColumn = ml.Data.CreateEnumerable<SsaSpikePrediction>(
transformedData, reuseRowObject: false);
Console.WriteLine($"{outputColumnName} column obtained " +
$"post-transformation.");
Console.WriteLine("Data\tAlert\tScore\tP-Value");
int k = 0;
foreach (var prediction in predictionColumn)
PrintPrediction(data[k++].Value, prediction);
// Prediction column obtained post-transformation.
// Data Alert Score P-Value
// 0 0 -2.53 0.50
// 1 0 -0.01 0.01
// 2 0 0.76 0.14
// 3 0 0.69 0.28
// 4 0 1.44 0.18
// 0 0 -1.84 0.17
// 1 0 0.22 0.44
// 2 0 0.20 0.45
// 3 0 0.16 0.47
// 4 0 1.33 0.18
// 0 0 -1.79 0.07
// 1 0 0.16 0.50
// 2 0 0.09 0.50
// 3 0 0.08 0.45
// 4 0 1.31 0.12
// 100 1 98.21 0.00 <-- alert is on, predicted spike
// 0 0 -13.83 0.29
// 1 0 -1.74 0.44
// 2 0 -0.47 0.46
// 3 0 -16.50 0.29
// 4 0 -29.82 0.21
}
private static void PrintPrediction(float value, SsaSpikePrediction
prediction) =>
Console.WriteLine("{0}\t{1}\t{2:0.00}\t{3:0.00}", value,
prediction.Prediction[0], prediction.Prediction[1],
prediction.Prediction[2]);
class TimeSeriesData
{
public float Value;
public TimeSeriesData(float value)
{
Value = value;
}
}
class SsaSpikePrediction
{
[VectorType(3)]
public double[] Prediction { get; set; }
}
}
}
적용 대상
피드백
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