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Abstract Algebra for Scala

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Updates [org.scalameta:scalafmt-core](https://github.com/scalameta/scalafmt) from 3.5.2 to 3.5.9. [GitHub Release Notes](https://github.com/scalameta/scalafmt/releases/tag/v3.5.9) - [Version Diff](https://github.com/scalameta/scalafmt/compare/v3.5.2...v3.5.9) I'll automatically update this PR to resolve conflicts as long as you don't change it yourself. If you'd...

https://github.com/twitter/algebird/runs/7812911450?check_suite_focus=true ``` [info] - AdaptiveVector[Int] has a monoid *** FAILED *** [364](https://github.com/twitter/algebird/runs/7226727055?check_suite_focus=true#step:5:365) [info] GeneratorDrivenPropertyCheckFailedException was thrown during property evaluation. [365](https://github.com/twitter/algebird/runs/7226727055?check_suite_focus=true#step:5:366) [info] (CheckProperties.scala:13) [366](https://github.com/twitter/algebird/runs/7226727055?check_suite_focus=true#step:5:367) [info] Falsified after 8 successful property evaluations....

https://github.com/twitter/algebird/blob/develop/algebird-core/src/main/scala/com/twitter/algebird/CountMinSketch.scala#L150 If we had that, we could reuse CMSSummation as a mutable CMS.

Updates [org.scoverage:sbt-scoverage](https://github.com/scoverage/sbt-scoverage) from 1.9.3 to 2.0.2. [GitHub Release Notes](https://github.com/scoverage/sbt-scoverage/releases/tag/v2.0.2) - [Version Diff](https://github.com/scoverage/sbt-scoverage/compare/v1.9.3...v2.0.2) I'll automatically update this PR to resolve conflicts as long as you don't change it yourself. If you'd...

Updates [org.scala-sbt:sbt](https://github.com/sbt/sbt) from 1.6.2 to 1.7.1. [GitHub Release Notes](https://github.com/sbt/sbt/releases/tag/v1.7.1) - [Version Diff](https://github.com/sbt/sbt/compare/v1.6.2...v1.7.1) I'll automatically update this PR to resolve conflicts as long as you don't change it yourself. If you'd...

Updates * [org.scala-lang:scala-library](https://github.com/scala/scala) * [org.scala-lang:scala-reflect](https://github.com/scala/scala) from 2.12.15 to 2.12.16. [GitHub Release Notes](https://github.com/scala/scala/releases/tag/v2.12.16) - [Version Diff](https://github.com/scala/scala/compare/v2.12.15...v2.12.16) I'll automatically update this PR to resolve conflicts as long as you don't change it...

``` [info] ! HyperLogLog.Downsize dense HLLs from 14 bits to 4 bits: Falsified after 0 passed tests. [info] > Successes: 80 (out of 100) [info] > Expected successes: 99.72 [info]...

bug

Test message: ``` [info] - AdaptiveVector[Int] has a monoid *** FAILED *** [info] GeneratorDrivenPropertyCheckFailedException was thrown during property evaluation. [info] (CheckProperties.scala:12) [info] Falsified after 5 successful property evaluations. [info] Location:...

The paper: http://dimacs.rutgers.edu/~graham/pubs/papers/fwddecay.pdf The tantalizing abstract: > While exponential time decay is commonly used in practice, other decay functions (e.g. polynomial decay) are not, even though they have been identified...

beginner
algorithm

Use index of hash function as the seed of murmur hash Currently, in MinHash we use randomGenerator to generate seed for murmurHash. We want stable/repeatable behavior, so that As long...