Now, Valve has issued an update to the Steam Store that includes more than a few substantive changes.The update " features several algorithmic changes and bug fixes in an effort to be more precise and more diverse in how Steam presents tags in the Recommendation Feed, as well as the 'More Like This' and the 'Recommended for You' sections of the store," wrote Steam in a blog post announcing the change.
Specifically, popular games will be emphasized less. Steam said users had accused the site's "Recommended for You" section of being too biased towards popular games and not personalized enough for individual gamers. The company made some tweaks to make its recommendation engine more fair and tested the update on 5 percent of Steam users. The experiment yielded some promising results. Users in the experiment group were 15 percent as likely to click on games in the recommendation section as those in the control group.
Steam said that it's encouraged by the results and has rolled out the new recommendation engine to all of its users. You can try out the Interactive Recommender tool for yourself.