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Would it make sense to keep two fixed size prefix tries (with counters)? Have to think how you could do NCD with hyperloglog. Loved Vitanyi's book, and the work his student Cilbrasi did on porting MPI…
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Hello Team,
It seems that new cardinality estimator paper has two new estimators, the improved estimator and MLE estimator, better than the one originally proposed, see paper here: https://arxiv.or…
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Currently the value of the "last timestamp" wins.
What if, you can have a custom algorithm there. The merging will happen on read + on compactions + on the cache probably too.
Things that can be made …
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It's impossible for NSEC zones, but there is a neat and super-fast trick for NSEC3-signed zones!
https://blog.apnic.net/2017/03/10/surprising-connection-hyperloglog-dnssec-nsec3/
C++ implementat…
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Dear Camille,
Many thanks for making the "Sketching in sequence bioinformatics: methods and applications" slides open source. Several questions related to bottom-s MinHash, One Permutation MinHash …
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### Bug description
approx_set Presto function in Velox supports more signatures than Presto, this causes failures when trying to validate against Presto as the signature types dont match. The solu…
kgpai updated
8 months ago
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This is a meta issue that tracks the support of SQL datatypes after #81 merged.
* [x] time & timestamp with precision (`TIME(3)` & `TIMESTAMP(6)`) https://github.com/trinodb/trino-python-client/pul…
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Use `ANALYZE TABLE` to write table statistics to storage - this could then be used for `SHOW COLUMNS` and if storage is fast enough, used for query planning.
This should write the HyperLogLog and T…
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First of all, this library is great. Thank you!
I wanted to suggest two features found in some other HLL libraries that (as far as I can tell) are missing here. It is possible to compute an estimat…
erp12 updated
7 months ago
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I am unable to view the [blog](http://blog.aggregateknowledge.com/2013/02/04/open-source-release-postgresql-hll/).
![image](https://github.com/citusdata/postgresql-hll/assets/74783625/24aebd06-78e…