spark-instrumented-optimizer/mllib
ozan a38d605d0d [SPARK-18570][ML][R] RFormula support * and ^ operators
## What changes were proposed in this pull request?

Added support for `*` and `^` operators, along with expressions within parentheses. New operators just expand to already supported terms, such as;

 - y ~ a * b = y ~ a + b + a : b
 - y ~ (a+b+c)^3 = y ~ a + b + c + a : b + a : c + a :b : c

## How was this patch tested?

Added new unit tests to RFormulaParserSuite

mengxr yanboliang

Closes #24764 from ozancicek/rformula.

Authored-by: ozan <ozancancicekci@gmail.com>
Signed-off-by: Sean Owen <sean.owen@databricks.com>
2019-06-04 08:59:30 -05:00
..
benchmarks [SPARK-25489][ML][TEST] Refactor UDTSerializationBenchmark 2018-09-23 13:34:06 -07:00
src [SPARK-18570][ML][R] RFormula support * and ^ operators 2019-06-04 08:59:30 -05:00
pom.xml [SPARK-26986][ML] Add JAXB reference impl to build for Java 9+ 2019-02-26 18:26:49 -06:00