Chenguang He created FLINK-3802:
-----------------------------------
Summary: Add Very Fast Reservoir Sampling
Key: FLINK-3802
URL: https://issues.apache.org/jira/browse/FLINK-3802
Project: Flink
Issue Type: Improvement
Components: Java API
Reporter: Chenguang He
Assignee: Chenguang He
Adding Very Fast Reservoir Sampling
(http://erikerlandson.github.io/blog/2015/11/20/very-fast-reservoir-sampling/)
An improvement version of Reservoir Sampling, it's used to deal with small
sampling in large dataset, where the set of dataset is much larger than the
size of sampling.
It is a random sampling proved in the link. The average possibility is P(R/J),
where R is size of sampling and J is index of streaming data
Thanks Erik Erlandson who is the author of this algorithm help me with
implementation.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
