GitLab

* Update docs for Imputer class

* Throw exception when trying to transform imputer without train data

* Update changelog

* Change the default kernel type in SVC to Kernel::RBF

* Update CHANGELOG.md

* update ECS config to v4

* composer: require Symplify 4

* apply coding-standard: use constants over functions, protected setUp() in tests, array indentation

* ecs: add false positive case

* composer: update lock

* bump to ECS 4.4

* update composer.lock

* shorten ECS config name

* ecs: ignore assignments in while()

* fix cs

* Update osx build for travis

* Try something more with this os

* This gonna be hard ...

* Cleanup travis build even more

* Install phpbench 🚀

* Add first benchmark for LeastSquares

* Update README and CONTRIBUTING guide

* Fix typo

* KMeans associative clustering added

* fix travis error

* KMeans will return provided keys as point label if they are provided

* fix travis

* fix travis

* Micro optimization for matrix multiplication

* code cs fix

* added a comment block for the change

* Throw proper exception

* Fix coding style

* Add  Optimizer tests

* Remove Optimizer.initialTheta and rename Optimizer.setInitialTheta to setTheta

* Add removeColumns function to ArrayDataset

* Add removeColumns to docs

* Fix cs

* Fix a wrong word

* More precise description about support and confidence

* Add data loader for svm format

* Add tests for error cases

* Set proper exception messages

* Add documents

* Add error checking code for invalid column format

* Add missing documents

* Fix Optimizer initial theta randomization

* Add more tests for LUDecomposition and FuzzyCMeans

* Add test to check keys of rules

* Reindex after array_filter/array_unique in Apriori

* Fix kmeans cluster and eigenvalue decomposition

* Fix kmeans space

* Fix code style

* Add phpstan strict rules

* Fix travis coveralls

* Add phpstan-phpunit strict rules

* Fix eigen decomposition test name and phpstan ingored error

* Fix phpunit include path

* Add tests for Covariance