New algorithms or improvements

• SASRec and SSEPT in Tensorflow 2.x in https://github.com/microsoft/recommenders/pull/1530 #1621 #1678
• RBM Code Cleanup, model save and other additions in #1599 #1618 #1622
• Overwrite older test file in NCF deep dive to avoid bug in https://github.com/microsoft/recommenders/pull/1674
• SAR+ improvement and bug fixes #1636 #1644 #1680 #1671
• NCF improvement and bug fixes in #1612
• Remove drop_duplicates() from SAR method fix #1464 in https://github.com/microsoft/recommenders/pull/1588
• SAR literal fix in https://github.com/microsoft/recommenders/pull/1663

New utilities or improvements

• Update lightfm_utils.py in https://github.com/microsoft/recommenders/pull/1624
• Change formats of user_ids and item_ids arg. in LigthFM in https://github.com/microsoft/recommenders/pull/1651
• Fix randomness issue in spark_stratified_split() in https://github.com/microsoft/recommenders/pull/1654
• Clarification for jaccard and lift similarity measures in https://github.com/microsoft/recommenders/pull/1668
• Use numpy divide in explained variance in https://github.com/microsoft/recommenders/pull/1691
• Change MovieLens URL from HTTP to HTTPS in https://github.com/microsoft/recommenders/pull/1677
• Remove casting of user and item IDs in Spark evaluation in https://github.com/microsoft/recommenders/pull/1686
• Persist intermediate data to avoid non-determinism caused by Spark lazy random evaluation in https://github.com/microsoft/recommenders/pull/1676 #1652

New notebooks or improvements

• Fix notebook build failure on Spark 3.2 in https://github.com/microsoft/recommenders/pull/1608
• Remove early stopping round from LightGBM example notebook in https://github.com/microsoft/recommenders/pull/1620

Other features

• Enable Python 3.8 and 3.9 in https://github.com/microsoft/recommenders/pull/1626 #1617
• Upgrade Python from 3.6 to 3.7 in ADO tests pipeline in https://github.com/microsoft/recommenders/pull/1627
• Increase time out for GPU nightly tests in https://github.com/microsoft/recommenders/pull/1623
• Lower LightGBM test AUC base value in https://github.com/microsoft/recommenders/pull/1619
• Change timeouts for tests #1625 #1661 #1684
• Scenario gaming in https://github.com/microsoft/recommenders/pull/1637
• Limiting tests: reducing the time of the news recommendation GPU notebooks in https://github.com/microsoft/recommenders/pull/1656
• Remove pydocumentdb in install_requires in https://github.com/microsoft/recommenders/pull/1629
• Change and improve dependencies #1630 #1653
• Fix Spark tuning test in https://github.com/microsoft/recommenders/pull/1635
• Typos in markdown files and other files #1639 #1589 #1646 #1647 #1688
• Update Dockerfile in https://github.com/microsoft/recommenders/pull/1645
• Improve documentation #1648 #1669 #1682 #1690 #1672
• Codecov Fix in https://github.com/microsoft/recommenders/pull/1665
• Set Spark env variables in nightly test in https://github.com/microsoft/recommenders/pull/1655 #1659

Full Changelog: https://github.com/microsoft/recommenders/compare/1.0.0...1.1.0