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**Motivation**
Modern analytical engines use relational operator properties to find optimal plan. Property is a value associated with the operator that doesn't change operator's equivalence and t…
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Bloom filters allow for quick and cheap checks for whether a partition exists in an sstable or not, without doing any I/O.
Bloom filters are allowed to provide false-positive answers (check says that…
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ContinuousSample current builds a population of a defined size, and then keeps a random sample of that size of all elements it has seen, such that each element has an equal chance of being included in…
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- URL: http://www.vldb.org/pvldb/vol12/p1471-fan.pdf
- Summary: 並行性制御と複製を統合した分散トランザクションプロトコルのOcean Vistaを提案.ストプロと既知のwrite setを仮定し,version watermarkを用いて可視性をトラックし,gossipにより各サーバーに伝達.Watermarkを用いた非同期並行性制…
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Originally tracked in https://github.com/cockroachdb/cockroach/issues/40205.
We added support for the `FOR UPDATE` explicit locking mode in https://github.com/cockroachdb/cockroach/pull/45701. In d…
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Different communities validate linkages in a variety of ways. For example examining likelihood under estimated parameters, coefficients of variables under linear models (like Fellegi-Sunter). Or one m…
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```
statement ok
create table t (v1 int, v2 int, v3 int);
```
```
statement ok
explain create materialized view mv1 as
select c1,
count(*)
from
(select t1.v1 as c1,
t2.v2 as c2…
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In the new feature `box.cfg.iproto_threads` the connections are pinned to the thread which managed to `accept()` them first. It might work fine for short-living connections and for small and fast requ…
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At least check the possibility of using pyaf in this context.
pyaf is not aware of the data source type (time series database or web service, etc) as long as the dataset is stored in a pandas datafra…
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- Using character ngrams in for TfIdf vectorized has yielded improvement in some models.
- SadedeGel TfIdf vectorizer should have `analyzer='char'` option similar to `sklearn`s.
- It is open to disc…