README
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Apache® DataSketches™ Core Go Library Component
This is the core Go component of the DataSketches library. It contains some of the sketching algorithms and can be accessed directly from user applications.
Note that we have a parallel core component for C++, Java and Python implementations of the same sketch algorithms, datasketches-cpp and datasketches-java.
Please visit the main DataSketches website for more information.
If you are interested in making contributions to this site please see our Community page for how to contact us.
Major Sketches
| Type | Implementation | Status |
|---|---|---|
| Cardinality | ||
| CpcSketch | ❌ | |
| HllSketch | ⚠️ | |
| ThetaSketch | ❌ | |
| TupleSketch |
❌ | |
| Quantiles | ||
| CormodeDoublesSketch | ❌ | |
| CormodeItemsSketch | ❌ | |
| KllDoublesSketch | ❌ | |
| KllFloatsSketch | ❌ | |
| KllSketch | ⚠️ | |
| ReqFloatsSketch | ❌ | |
| Frequencies | ️ | |
| LongsSketch | ⚠️ | |
| ItemsSketch | ⚠️ | |
| Sampling | ||
| ReservoirLongsSketch | ❌ | |
| ReserviorItemsSketch | ❌ | |
| VarOptItemsSketch | ❌ |
Specialty Sketches
| Type | Interface Name | Status |
|---|---|---|
| Cardinality/FM85 | UniqueCountMap | ❌ |
| Cardinality/Tuple | FdtSketch | ❌ |
| FdtSketch | ❌ | |
| ArrayOfDoublesSketch | ❌ | |
| DoubleSketch | ❌ | |
| IntegerSketch | ❌ | |
| ArrayOfStringsSketch | ❌ | |
| EngagementTest3 | ❌ |
❌ = Not yet implemented
⚠️ = Implemented but not officially released
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This code requires Go 1.22
Documentation
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Overview ¶
Package datatasketches is the parent package for all sketch families and common code areas.
The Sketching Core Library provides a range of stochastic streaming algorithms that are particularly useful when integrating this technology into systems that must deal with massive data. The library is designed to be easy to use, highly performant, and memory efficient.
Source Files
Directories
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| Path | Synopsis |
|---|---|
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Package frequencies is dedicated to streaming algorithms that enable estimation of the frequency of occurrence of items in a weighted multiset stream of items.
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Package frequencies is dedicated to streaming algorithms that enable estimation of the frequency of occurrence of items in a weighted multiset stream of items. |
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Package hll is dedicated to streaming algorithms that enable estimation of the cardinality of a stream of items.
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Package hll is dedicated to streaming algorithms that enable estimation of the cardinality of a stream of items. |
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Package kll is an implementation of a very compact quantiles sketch with lazy compaction scheme and nearly optimal accuracy per retained quantile.</p>
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Package kll is an implementation of a very compact quantiles sketch with lazy compaction scheme and nearly optimal accuracy per retained quantile.</p> |