 | RandomSampling Class |
Inheritance HierarchyNovacta.AnalyticsRandomDevice
Novacta.AnalyticsRandomSampling
Novacta.AnalyticsSimpleRandomSampling
Novacta.AnalyticsUnequalProbabilityRandomSampling
Namespace: Novacta.Analytics
Assembly: Novacta.Analytics (in Novacta.Analytics.dll) Version: 2.0.0
SyntaxThe RandomSampling type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | RandomSampling | Initializes a new instance of the RandomSampling class |
Properties| Name | Description | |
|---|---|---|
 | InclusionProbabilities |
Gets the inclusion probabilities of the
population units.
|
| PopulationSize |
Gets the size of the population from which this
instance draws samples.
|
| RandomNumberGenerator |
Gets or sets the basic random generator for this instance.
(Inherited from RandomDevice.) |
| SampleSize |
Gets the size of the samples drawn by this
instance.
|
Methods| Name | Description | |
|---|---|---|
 | Equals | Determines whether the specified object is equal to the current object. (Inherited from Object.) |
| Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
| GetHashCode | Serves as the default hash function. (Inherited from Object.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| NextDoubleMatrix |
Draws a random sample represented as a DoubleMatrix
instance.
|
| NextIndexCollection |
Draws a sample represented as an IndexCollection
instance.
|
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
Remarks
A finite population of size 
can be
defined as the
set 
.
Elements of 
are referred
to as units. Property PopulationSize should
return the size of the population.
A sample is every non empty subset
of 
.
Class RandomSampling exposes several methods to
draw samples
having size returned by SampleSize from a finite
population.
Method NextIndexCollection returns a sample which is represented as an IndexCollection instance having Count equal to SampleSize and whose indexes are less than PopulationSize .
Method NextDoubleMatrix returns a sample represented as a DoubleMatrix instance, having one row and a number of columns equal to PopulationSize. In this context, the sample is the set of linear indexes corresponding to entries in the returned matrix equal to 1, other entries storing 0 otherwise. For an introduction to linear indexes, see the remarks of the DoubleMatrix class.
See Also