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tesser.cardinality
Cardinality estimate digest using HyperLogLog+. For examples, check tesser.math/digest.
Cardinality estimate digest using HyperLogLog+. For examples, check tesser.math/digest.
from-byte-arrayclj
(from-byte-array bs)Convert a ByteArray into an HLL estimator instance.
Convert a ByteArray into an HLL estimator instance.
hllclj
(hll)(hll {:keys [p sp]})Construct a new HLL cardinality estimator based on the improved HyperLogLog+ algorithm which features sparse sets and bias correction. Optionally accepts an options map with keys:
:p - Precision for the Normal set representation. :sp - Precision for the Sparse set representation.
For the sparse representation: :p must be a value between 4 and :sp :sp must be less than 32.
For old behaviour: :sp must be set to 0.
Default: :p 16, :sp 0
Construct a new HLL cardinality estimator based on the improved HyperLogLog+ algorithm which features sparse sets and bias correction. Optionally accepts an options map with keys: :p - Precision for the Normal set representation. :sp - Precision for the Sparse set representation. For the sparse representation: :p must be a value between 4 and :sp :sp must be less than 32. For old behaviour: :sp must be set to 0. Default: :p 16, :sp 0
to-byte-arrayclj
(to-byte-array hll)Convert the HLL estimator to a ByteArray
Convert the HLL estimator to a ByteArray
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