Recommendation libraries - http://jagto.com/2015/12/14/java-libraries-for-recommendation-system/

Overview of Recommender Algorithms – https://buildingrecommenders.wordpress.com/2015/11/16/overview-of-recommender-algorithms-part-1 https://buildingrecommenders.wordpress.com/2015/11/18/overview-of-recommender-algorithms-part-2 https://buildingrecommenders.wordpress.com/2015/11/18/overview-of-recommender-algorithms-part-3 https://buildingrecommenders.wordpress.com/2015/11/18/overview-of-recommender-algorithms-part-4 https://buildingrecommenders.wordpress.com/2015/11/18/overview-of-recommender-algorithms-part-5 https://buildingrecommenders.wordpress.com/2015/11/10/the-components-of-a-recommender-system/
http://www.infoq.com/cn/articles/user-portrait-collaborative-filtering-for-recommend-systems https://blog.statsbot.co/recommendation-system-algorithms-ba67f39ac9a3

Youtube - https://www.infoq.cn/article/cNMhcg31lS26TjNURxF0

Recommendation System Using Spark ML Akka and Cassandra - https://edersoncorbari.github.io/tutorials/building-spark-ml-recommendation-system/ https://www.javacodegeeks.com/2019/10/recommendation-system-using-spark-ml-akka-cassandra.html

Twitter's Recommendation Algorithm - https://blog.twitter.com/engineering/en_us/topics/open-source/2023/twitter-recommendation-algorithm  https://www.infoq.cn/article/3OOPEivwhT0gLcKP0Nwl