Raw Metadata XML
<pkgmetadata>
<maintainer type="person">
<email>dan@d3fy.net</email>
<name>Dan Molik</name>
</maintainer>
<longdescription lang="en">
This Postgres module introduces a new data type hll which is a HyperLogLog
data structure. HyperLogLog is a fixed-size, set-like structure used for
distinct value counting with tunable precision. For example, in 1280 bytes hll
can estimate the count of tens of billions of distinct values with only a few
percent error.
In addition to the algorithm proposed in the original paper, this
implementation is augmented to improve its accuracy and memory use without
sacrificing much speed. See below for more details.
This postgresql-hll extension was originally developed by the Science team
from Aggregate Knowledge, now a part of Neustar. Please see the
acknowledgements section below for details about its contributors.
</longdescription>
</pkgmetadata>