diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..27abe3a
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,151 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# static files generated from Django application using `collectstatic`
+media
+static
+
+.idea/
+.Rhistory
+*.tar.gz
+map_*
+*.shp
+*.pkl
+*.csv
diff --git a/requirements.txt b/requirements.txt
index 65781fe..c6fbd45 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,15 +1,10 @@
-matplotlib==3.1.2
-dataclasses==0.7
-gpflow==2.0.0
-tensorflow==2.1.0
+tensorflow==1.8.0
 numpy==1.17.4
-typing==3.6.2
-tqdm==4.40.2
-scipy==1.4.1
-pytest==5.4.1
-pytest-check==0.3.8
-scikit_learn==0.22
-tensorflow_probability==0.9.0
-yapf==0.29.0
-xlrd==1.2.0
+matplotlib==2.2.2
+tqdm==4.40.0
+setuptools==42.0.2
+gpflow==1.3.0
 pandas==1.0.3
+typing==3.6.2
+scikit_learn==0.23.1
+tensorflow_probability==0.10.0
diff --git a/steingp/__init__.py b/steingp/__init__.py
index 18be7df..3ed5249 100644
--- a/steingp/__init__.py
+++ b/steingp/__init__.py
@@ -1,4 +1,4 @@
-from .kernel import RBF, IMQ, RFF, Kernel, MaternWrapper
+from .kernel import RBF, IMQ, RFF, Kernel, MaternWrapper, FourierRBF
 from .gp import SteinGPR, SteinSGPR, SteinMC
 from .svgd import SVGD, SteinSGPR, SparseSVGD
 from .utils import accuracy, rmse, auc, ece, write_preds, box_print, cprint