I am using Accord.NET to create and save a StepwiseLogisticRegressionModel. When I try to serialize and save the model, I am getting the following error:
Type 'System.Threading.CancellationToken' in Assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' is not marked as serializable.
Saving other models such as NaiveBayes seems to work fine.
Here is the code that I have tried:
StepwiseLogisticRegressionAnalysis model;
string file = Path.Combine(path, filename);
Serializer.Save(obj: model, path: file);
and
StepwiseLogisticRegressionAnalysis model;
string file = Path.Combine(path, filename);
using(FileStream stream = new FileStream(filename, FileMode.Create))
{
var binaryFormatter = new BinaryFormatter();
binaryFormatter.Serialize(stream, best);
}
How do I resolve this?
Edit: Here is a working example:
double[][] inputs =
{
// Age Smoking
new double[] { 55, 0 }, // 1
new double[] { 28, 0 }, // 2
new double[] { 65, 1 }, // 3
new double[] { 46, 0 }, // 4
new double[] { 86, 1 }, // 5
new double[] { 56, 1 }, // 6
new double[] { 85, 0 }, // 7
new double[] { 33, 0 }, // 8
new double[] { 21, 1 }, // 9
new double[] { 42, 1 }, // 10
new double[] { 33, 0 }, // 11
new double[] { 20, 1 }, // 12
new double[] { 43, 1 }, // 13
new double[] { 31, 1 }, // 14
new double[] { 22, 1 }, // 15
new double[] { 43, 1 }, // 16
new double[] { 46, 0 }, // 17
new double[] { 86, 1 }, // 18
new double[] { 56, 1 }, // 19
new double[] { 55, 0 }, // 20
};
double[] output =
{
0, 0, 0, 1, 1, 1, 0, 0, 0, 1,
0, 1, 1, 1, 1, 1, 0, 1, 1, 0
};
var regression = new StepwiseLogisticRegressionAnalysis(inputs, output,
new[] { "Age", "Smoking" }, "Cancer");
regression.Learn(inputs, output);
var path = $#"C:\";
var filename = "StepWiseRegressionModel.accord";
string file = Path.Combine(path, filename);
Serializer.Save(regression, file);
It looks like there's a private field somewhere in StepwiseLogisticRegressionAnalysis (or a subobject) that contains a CancellationToken, which can't be serialized.
You should try serializing the output model of the analysis (see the regression.Current.Regression property).
Just keep in mind that binary serialization of an object is fairly fragile, unless it's specifically supported. The deserialization environment has to be the exact same as the serialization (same library versions, C# versions, OS version, etc). Serializing the data, then reconstructing the object from it would be better if possible.
I wonder if it is possible to implement a general Julia\Matlab alike View function in C# that would work for arrays of any dimensions (eg [,,] and [,,,]) as they do it in array slicer\mover view. So I wonder if there is a library that provides similar functionality for CSharp multidimentional arrays or how to implement it in C#?
The solution is twofold:
Use a wrapper class that holds a reference to the master array
Use the Array base class to make it polymorphic
Wrapper
class View<T>
{
private readonly Array array;
private readonly int dim;
private readonly int slice;
public View(Array array, int dim, int slice)
{
this.array = array;
this.dim = dim;
this.slice = slice;
}
public T this[params int[] indexes]
{
get { return (T)array.GetValue(BaseIndexesFor(indexes)); }
set { array.SetValue(value, BaseIndexesFor(indexes)); }
}
private int[] BaseIndexesFor(int[] indexes)
{
if (indexes.Length != array.Rank - 1) throw new ArgumentException("indexes");
int i_index = 0;
int[] baseIndexes = new int[array.Rank];
for (int i = 0; i < baseIndexes.Length; i++)
{
baseIndexes[i] = (i == dim) ? slice : indexes[i_index++];
}
return baseIndexes;
}
}
2D example
var A = new int[,]
{
{ 1, 2, 3 },
{ 4, 5, 6 },
{ 7, 8, 9 }
};
/* View(Array array, int dim, int slice)
*
* For 2 dimensional array:
* dim=0 -> rows
* dim=1 -> columns
*/
// From second dimension slice index 1
// Or simply, take column with index 1
var B = new View<int>(A, 1, 1);
B[2] = 0;
Console.WriteLine(A[2, 1]); // 0
3D examples
var C = new int[,,]
{
{
{ 1, 2, 3 },
{ 4, 5, 6 },
{ 7, 8, 9 }
},
{
{ 11, 12, 13 },
{ 14, 15, 16 },
{ 17, 18, 19 }
},
{
{ 21, 22, 23 },
{ 24, 25, 26 },
{ 27, 28, 29 }
}
};
/* From first dimension slice index 2
* { 21, 22, 23 },
* { 24, 25, 26 },
* { 27, 28, 29 }
*/
var D = new View<int>(C, 0, 2);
D[1, 1] = 0;
Console.WriteLine(C[2, 1, 1]); // 0
/* From third dimension slice index 0
* { 1, 4, 7 },
* { 11, 14, 17 },
* { 21, 24, 27 }
*/
var E = new View<int>(C, 2, 0);
E[2, 0] = 0;
Console.WriteLine(C[2, 0, 0]); // 0
i just curious on how to get the specific data column based on database
string[] arrLabel = new string[dt.Rows.Count];
Object[] data = new Object[dt.Rows.Count];
Object[] dataDetail = new Object[dt.Rows.Count];
String[] detail = new String[dt.Rows.Count];
var returnObject = new List<object>();
var returnColumnList = new List<object>();
int i = 0;
foreach (DataRow item in dt.Rows)
{
for (int j = 0; j < 1; j++)
{
returnColumnList.Add(new object[] {item["ATT_WF_STATUS_2"], item["ATT_WF_STATUS_3"]});
}
dataDetail = returnColumnList.ToArray();
returnObject.Add(new object[] { item["DEPARTEMENT"],dataDetail[i]});
arrLabel[i] = ((string)item["DEPARTEMENT"]);
i++;
}
data = returnObject.ToArray();
this.data = data;
this.arrLabel = arrLabel;
however, the graphic using dotnet is not showing but like this.
when i inspect element using browser
$(document).ready(function() {
chartColumnDetail = new Highcharts.Chart({
chart: { renderTo:'chartColumnDetail_container', options3d: { alpha: 10, beta: 0, depth: 50, enabled: true, viewDistance: 25 }, plotShadow: false, type: 'column' },
credits: { enabled: false },
legend: { enabled: true, itemStyle: { color: '#2C3E50' } },
plotOptions: { column: { allowPointSelect: true, colorByPoint: true, cursor: 'pointer', dataLabels: { enabled: true, style: { font:'14px', fontWeight:'bold' } }, depth: 50, showInLegend: true } },
subtitle: { text: 'Grouped by Status' },
title: { text: 'Attendance Analytics From 01 January 2010 Until 15 December 2016' },
tooltip: { formatter: function(){ var sliceIndex =this.point.index; var sliceName = this.series.chart.axes[0].categories[sliceIndex]; return 'The value for <b>' + this.point.name + '</b> is <b>' + this.y +'</b>';} },
xAxis: { categories: ['DO-Advisory Department', 'EDP Department', 'Enterprise Infrastructure Services Department', 'Pre Sales Department', 'Sales Department 1', 'IO-DCOPS Department', 'Human Capital Department'], labels: { align: 'center', style: { font: 'bold 10px Verdana,sans-serif' } } },
yAxis: { min: 0, title: { text: 'Amount' } },
exporting: { buttons: { contextButton: { align: 'center', x: 350, y: -3 } }, enabled: true, scale: 5 },
series: [{ data: [['DO-Advisory Department', [15, 32]], ['EDP Department', [26, 5]], ['Enterprise Infrastructure Services Department', [8, 1]], ['Pre Sales Department',[ 1, 6]], ['Sales Department 1', [1, 3]], ['IO-DCOPS Department',[ 1, 0]], ['Human Capital Department',[1, 0]], name: 'Department' }]
});
});
is there any way to fix this problem ? thank you very much
Update :
i am taking this from sql database which has this similar conditionenter image description here
Another update:
this is full coding for this case
protected DataTable GetDataDetail()
{
SortedList sl = new SortedList();
DateTime dateFrom = DateTime.ParseExact(Request.Form[txtOldDate.UniqueID], "yyyy-MM-dd", null);
DateTime dateTo = DateTime.ParseExact(Request.Form[txtNewDate.UniqueID], "yyyy-MM-dd", null);
sl.Add("#DATE_FROM-date", dateFrom);
sl.Add("#DATE_TO-date", dateTo);
DataTable dt = new DataTable();
dateFromChart = dateFrom.ToString("dd MMMM yyyy", CultureInfo.InvariantCulture);
dateToChart = dateTo.ToString("dd MMMM yyyy", CultureInfo.InvariantCulture);
dt = bll.GetAttendanceAnalyticsBasedWfStatus(sl);
string[] arrLabel = new string[dt.Rows.Count];
Object[] data = new Object[dt.Rows.Count];
Object[] dataDetail = new Object[dt.Rows.Count];
var returnObject = new List<object>();
List<object[]> returnColumnList = new List<object[]>();
int i = 0;
foreach (DataRow item in dt.Rows)
{
for (int j = 0; j < 1; j++)
{
returnColumnList.Add(new object[] { item["DEPARTEMENT"], item["ATT_WF_STATUS_2"], item["ATT_WF_STATUS_3"] });
}
dataDetail = returnColumnList.ToArray();
returnObject.Add(new object[] { returnColumnList.Select(b => new { name = b.GetValue(0), data = returnColumnList.Select(y => y.GetValue(1) + "," + y.GetValue(2)).ToArray() }).ToArray() });
arrLabel[i] = ((string)item["DEPARTEMENT"]);
i++;
}
jsonSeries = new JavaScriptSerializer().Serialize(returnObject);
Response.Write(jsonSeries);
data = returnObject.ToArray();
this.data = data;
this.arrLabel = arrLabel;
return dt;
}
then the dotnetchart
protected void ColumnChartDetail()
{
GetDataDetail();
//Binding data to Chart
DotNet.Highcharts.Highcharts chartColumnDetail = new DotNet.Highcharts.Highcharts("chartColumnDetail").InitChart(new Chart
{
DefaultSeriesType = ChartTypes.Column
})
.SetOptions(new GlobalOptions
{
Colors = new[] {
ColorTranslator.FromHtml("#50B432"), //using system.drawing
ColorTranslator.FromHtml("#ED561B"),
ColorTranslator.FromHtml("#DDDF00"),
ColorTranslator.FromHtml("#24CBE5"),
ColorTranslator.FromHtml("#64E572"),
ColorTranslator.FromHtml("#FF9655"),
ColorTranslator.FromHtml("#34495E"),
ColorTranslator.FromHtml("#6AF9C4")
}
})
//set title
.SetTitle(new Title
{
Text = "Attendance Analytics From " + this.dateFromChart + " Until " + this.dateToChart,
})
//set subtitle
.SetSubtitle(new Subtitle
{
Text = "Grouped by Status",
})
//set tooltip
.SetTooltip(new Tooltip
{
Formatter = #"function(){ var sliceIndex = this.point.index; var sliceName = this.series.chart.axes[0].categories[sliceIndex]; return 'The value for <b>' + this.point.name + '</b> is <b>' + this.y +'</b>';}"
})
//Exporting options
.SetExporting(new Exporting
{
Enabled = true,
Scale = 5,
Buttons = new ExportingButtons
{
ContextButton = new ExportingButtonsContextButton
{
Align = HorizontalAligns.Center,
X = 350,
Y = -3
}
}
})
//set plot option
.SetPlotOptions(new PlotOptions
{
Column = new PlotOptionsColumn
{
AllowPointSelect = true,
Depth = 50,
DataLabels = new PlotOptionsColumnDataLabels
{
Enabled = true,
Style = "font:'14px', fontWeight:'bold'"
},
ShowInLegend = true,
ColorByPoint = true,
Cursor = Cursors.Pointer,
}
})
//set chart initial
.InitChart(new Chart
{
Type = ChartTypes.Column,
PlotBackgroundColor = null,
PlotBorderWidth = null,
PlotShadow = false,
Options3d = new ChartOptions3d // options for 3D
{
Enabled = true,
Alpha = 10,
Beta = 0,
Depth = 50,
ViewDistance = 25
}
})
//set xAxis formatter text
.SetXAxis(new XAxis
{
Categories = arrLabel,
Labels = new XAxisLabels
{
Style = "font: 'bold 10px Verdana,sans-serif'",
Align = HorizontalAligns.Center
}
})
//set yAxis formater text
.SetYAxis(new YAxis
{
Min = 0,
Title = new YAxisTitle { Text = "Amount" }
})
//remove watermark of highcharts
.SetCredits(new Credits
{
Enabled = false
})
//set Legend
.SetLegend(new Legend
{
Enabled = true,
ItemStyle = "color: '#2C3E50'"
})
//set Series
.SetSeries(new[]
{
new Series
{
Name = "Department",
Data = new Data(data)
},
});
chartContainerColumnDetail.Text = chartColumnDetail.ToHtmlString();
}
after added code, the result become like this
[[[{"name":"DO-Advisory Department","data":["15,32"]}]],[[{"name":"DO-Advisory Department","data":["15,32","11,18"]},{"name":"EDP Department","data":["15,32","11,18"]}]],[[{"name":"DO-Advisory Department","data":["15,32","11,18","8,1"]},{"name":"EDP Department","data":["15,32","11,18","8,1"]},{"name":"Enterprise Infrastructure Services Department","data":["15,32","11,18","8,1"]}]],[[{"name":"DO-Advisory Department","data":["15,32","11,18","8,1","1,6"]},{"name":"EDP Department","data":["15,32","11,18","8,1","1,6"]},{"name":"Enterprise Infrastructure Services Department","data":["15,32","11,18","8,1","1,6"]},{"name":"Pre Sales Department","data":["15,32","11,18","8,1","1,6"]}]],[[{"name":"DO-Advisory Department","data":["15,32","11,18","8,1","1,6","1,3"]},{"name":"EDP Department","data":["15,32","11,18","8,1","1,6","1,3"]},{"name":"Enterprise Infrastructure Services Department","data":["15,32","11,18","8,1","1,6","1,3"]},{"name":"Pre Sales Department","data":["15,32","11,18","8,1","1,6","1,3"]},{"name":"Sales Department 1","data":["15,32","11,18","8,1","1,6","1,3"]}]],[[{"name":"DO-Advisory Department","data":["15,32","11,18","8,1","1,6","1,3","1,0"]},{"name":"EDP Department","data":["15,32","11,18","8,1","1,6","1,3","1,0"]},{"name":"Enterprise Infrastructure Services Department","data":["15,32","11,18","8,1","1,6","1,3","1,0"]},{"name":"Pre Sales Department","data":["15,32","11,18","8,1","1,6","1,3","1,0"]},{"name":"Sales Department 1","data":["15,32","11,18","8,1","1,6","1,3","1,0"]},{"name":"IO-DCOPS Department","data":["15,32","11,18","8,1","1,6","1,3","1,0"]}]],[[{"name":"DO-Advisory Department","data":["15,32","11,18","8,1","1,6","1,3","1,0","1,0"]},{"name":"EDP Department","data":["15,32","11,18","8,1","1,6","1,3","1,0","1,0"]},{"name":"Enterprise Infrastructure Services Department","data":["15,32","11,18","8,1","1,6","1,3","1,0","1,0"]},{"name":"Pre Sales Department","data":["15,32","11,18","8,1","1,6","1,3","1,0","1,0"]},{"name":"Sales Department 1","data":["15,32","11,18","8,1","1,6","1,3","1,0","1,0"]},{"name":"IO-DCOPS Department","data":["15,32","11,18","8,1","1,6","1,3","1,0","1,0"]},{"name":"Human Capital Department","data":["15,32","11,18","8,1","1,6","1,3","1,0","1,0"]}]]]
Update 2:
Can u form the data result like this :
List<object[]> returnColumnList = new List<object[]>();
string json = string.Empty;
var returnObject = new List<object>();
returnColumnList.Add(new object[] { "Depart" , "123", "345" });
returnColumnList.Add(new object[] { "Depart", "123", "345" });
foreach (var item in returnColumnList)
{
returnObject.Add(new {name = item.GetValue(0), data = (new object[] {item.GetValue(1) , item.GetValue(2)})});
}
json = new JavaScriptSerializer().Serialize(returnObject);
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
List item
The Series is not set properly.
Please do it this way :
series: [{
name: 'DO-Advisory Department',
data: [15, 32]
}, {
name: 'EDP Department',
data: [26, 5]
}, {
name: 'Enterprise Infrastructure Services Department',
data: [8, 1]
}]
Have attached the image of results.
An array of 3 dimensions initializes like this.
int[,,] arr = new int[2,3,3] {{{1,2,3},{4,5,6},{7,8,9}}, {{1,2,3},{4,5,6},{7,8,9}}};
How do you initialize this in 4 dimensions array or more?
int[,,,] arr = new int[3,6,5,2] // how to initialize as above?
If you want an example just like yours, it would be like this:
int[, , ,] a = new int[2, 3, 3, 3] {
{
{
{ 1, 2, 3 },
{ 4, 5, 6 },
{ 7, 8, 9 }
},
{
{ 1, 2, 3 },
{ 4, 5, 6 },
{ 7, 8, 9 }
},
{
{ 1, 2, 3 },
{ 4, 5, 6 },
{ 7, 8, 9 }
}
},
{
{
{ 1, 2, 3 },
{ 4, 5, 6 },
{ 7, 8, 9 }
},
{
{ 1, 2, 3 },
{ 4, 5, 6 },
{ 7, 8, 9 }
},
{
{ 1, 2, 3 },
{ 4, 5, 6 },
{ 7, 8, 9 }
}
}
};