v22.04.00

🚨 Breaking Changes

• Moving more ling prims to raft (#4567) @cjnolet
• Refactor QN solver: pass parameters via a POD struct (#4511) @achirkin

🐛 Bug Fixes

• Fix single-GPU build by separating multi-GPU decomposition utils from single GPU (#4645) @dantegd
• RF: fix stream bug causing performance regressions (#4644) @venkywonka
• XFail test_hinge_loss temporarily (#4621) @lowener
• cuml now supports building non static treelite (#4598) @robertmaynard
• Fix mean_squared_error with cudf series (#4584) @daxiongshu
• Fix for nightly CI tests: Use CUDA_REL variable in gpu build.sh script (#4581) @dantegd
• Fix the TargetEncoder when transforming dataframe/series with custom index (#4578) @daxiongshu
• Removing sign from pca assertions for now. (#4559) @cjnolet
• Fix compatibility of OneHotEncoder fit (#4544) @lowener
• Fix worker streams in OLS-eig executing in an unsafe order (#4539) @achirkin
• Remove xfail from test_hinge_loss (#4504) @Nanthini10
• Fix automerge #4501 (#4502) @dantegd
• Remove classmethod of SimpleImputer (#4439) @lowener

📖 Documentation

• RF: Fix improper documentation in dask-RF (#4666) @venkywonka
• Add doctest (#4618) @lowener
• Fix document layouts in Parameters sections (#4609) @Yosshi999
• Updates to consistency of MNMG PCA/TSVD solvers (docs + code consolidation) (#4556) @cjnolet

🚀 New Features

• Add a dummy argument deep to TargetEncoder.get_params() (#4601) @daxiongshu
• Add Complement Naive Bayes (#4595) @lowener
• Add get_params() to TargetEncoder (#4588) @daxiongshu
• Target Encoder with variance statistics (#4483) @daxiongshu
• Interruptible execution (#4463) @achirkin
• Configurable libcuml++ per algorithm (#4296) @dantegd

🛠️ Improvements

• Adding some prints when hdbscan assertion fails (#4656) @cjnolet
• Temporarily disable new ops-bot functionality (#4652) @ajschmidt8
• Use CPMFindPackage to retrieve cumlprims_mg (#4649) @trxcllnt
• Pin dask & distributed versions (#4647) @galipremsagar
• Remove RAFT MM includes (#4637) @viclafargue
• Add option to build RAFT artifacts statically into libcuml++ (#4633) @dantegd
• Upgrade dask & distributed minimum version (#4632) @galipremsagar
• Add .github/ops-bot.yaml config file (#4630) @ajschmidt8
• Small fixes for certain test failures (#4628) @vinaydes
• Templatizing FIL types to add float64 support (#4625) @canonizer
• Fitsne as default tsne method (#4597) @lowener
• Add get_feature_names to OneHotEncoder (#4596) @viclafargue
• Fix OOM and cudaContext crash in C++ benchmarks (#4594) @RAMitchell
• Using Pyraft and automatically cloning when raft pin changes (#4593) @cjnolet
• Upgrade Treelite to 2.3.0 (#4590) @hcho3
• Sphinx warnings as errors (#4585) @RAMitchell
• Adding missing FAISS license (#4579) @cjnolet
• Add QN solver to ElasticNet and Lasso models (#4576) @achirkin
• Move remaining stats prims to raft (#4568) @cjnolet
• Moving more ling prims to raft (#4567) @cjnolet
• Adding libraft conda dependencies (#4564) @cjnolet
• Fix RF integer overflow (#4563) @RAMitchell
• Add CMake install rules for tests (#4551) @ajschmidt8
• Faster GLM preprocessing by fusing kernels (#4549) @achirkin
• RAFT API updates for lap, label, cluster, and spectral apis (#4548) @cjnolet
• Moving cusparse wrappers to detail API in RAFT. (#4547) @cjnolet
• Unpin max dask and distributed versions (#4546) @galipremsagar
• Kernel density estimation (#4545) @RAMitchell
• Update xgboost version in CI (#4541) @ajschmidt8
• replaces ccache with sccache (#4534) @AyodeAwe
• Remove RAFT memory management (2/2) (#4526) @viclafargue
• Updating RAFT linalg headers (#4515) @divyegala
• Refactor QN solver: pass parameters via a POD struct (#4511) @achirkin
• Kernel ridge regression (#4492) @RAMitchell
• QN solvers: Use different gradient norms for different for different loss functions. (#4491) @achirkin
• RF: Variable binning and other minor refactoring (#4479) @venkywonka
• Rewrite CD solver using more BLAS (#4446) @achirkin
• Add support for sample_weights in LinearRegression (#4428) @lowener
• Nightly automated benchmark (#4414) @viclafargue
• Use FAISS with RMM (#4297) @viclafargue
• Split C++ tests into separate binaries (#4295) @dantegd