@ExperimentalApi @Immutable public abstract class Distribution extends Object
Distribution
contains summary statistics for a population of values. It optionally
contains a histogram representing the distribution of those values across a set of buckets.Modifier and Type | Class and Description |
---|---|
static class |
Distribution.Bucket
The histogram bucket of the population values.
|
static class |
Distribution.BucketOptions
The bucket options used to create a histogram for the distribution.
|
static class |
Distribution.Exemplar
An example point that may be used to annotate aggregated distribution values, associated with a
histogram bucket.
|
Modifier and Type | Method and Description |
---|---|
static Distribution |
create(long count,
double sum,
double sumOfSquaredDeviations,
Distribution.BucketOptions bucketOptions,
List<Distribution.Bucket> buckets)
Creates a
Distribution . |
abstract Distribution.BucketOptions |
getBucketOptions()
Returns bucket options used to create a histogram for the distribution.
|
abstract List<Distribution.Bucket> |
getBuckets()
Returns the aggregated histogram
Distribution.Bucket s. |
abstract long |
getCount()
Returns the aggregated count.
|
abstract double |
getSum()
Returns the aggregated sum.
|
abstract double |
getSumOfSquaredDeviations()
Returns the aggregated sum of squared deviations.
|
public static Distribution create(long count, double sum, double sumOfSquaredDeviations, Distribution.BucketOptions bucketOptions, List<Distribution.Bucket> buckets)
Distribution
.count
- the count of the population values.sum
- the sum of the population values.sumOfSquaredDeviations
- the sum of squared deviations of the population values.bucketOptions
- the bucket options used to create a histogram for the distribution.buckets
- Distribution.Bucket
s of a histogram.Distribution
.public abstract long getCount()
public abstract double getSum()
public abstract double getSumOfSquaredDeviations()
The sum of squared deviations from the mean of the values in the population. For values x_i this is:
Sum[i=1..n]((x_i - mean)^2)
If count is zero then this field must be zero.
@Nullable public abstract Distribution.BucketOptions getBucketOptions()
BucketOptions
associated with the Distribution
, or null
if
there isn't one.public abstract List<Distribution.Bucket> getBuckets()
Distribution.Bucket
s.