ozankabak opened a new issue, #14897: URL: https://github.com/apache/datafusion/issues/14897
### Is your feature request related to a problem or challenge? The new low-level framework to evaluate expressions in a probabilistic context (#14699) supports various distribution types, but it doesn't yet support sampled distributions represented by historgrams. ### Describe the solution you'd like We can add a `SampledDistribution` variant to `Distribution`, which will store a histogram. All summary statistics (mean, variance and others) will be derived from the histogram. When combining `SampledDistribution` objects with binary operations, the statistics framework will construct the resulting histogram from histograms of operands. For example, when `evaluate_statistics` is invoked on a `BinaryExpr` that *adds* two expressions whose `Distributions` are `SampledDistribution`s, the output histogram will be the convolution of the two histograms (due to the independence assumption in the framework). ### Describe alternatives you've considered N/A. ### Additional context _No response_ -- 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: github-unsubscr...@datafusion.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For additional commands, e-mail: github-h...@datafusion.apache.org
