jasperjiaguo opened a new issue, #9936: URL: https://github.com/apache/pinot/issues/9936
As @snleee has pointed out, the current implementation for covar is not numerical stable and may subject to https://en.wikipedia.org/wiki/Catastrophic_cancellation if the covariance value itself is small. See: https://github.com/apache/pinot/pull/9910 and https://github.com/trinodb/trino/blob/1866a23e3b0377144c1820de892c0de2762351a8/core/trino-main/src/main/java/io/trino/operator/aggregation/state/CovarianceState.java -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
