Measuring the business value of recommender systems
Sections 2 to 4; sales increases of one to five per cent on average where business effects are measured directly (sections 3.2 and 4.1); over 26 per cent for one category of an online grocery store; baselines of no recommender, a popularity list or, rarely, another sophisticated method; a news-site test (Garcin et al.) with about 35 per cent higher click-through from a new method and about 100 per cent from changing the widget's position and size; a 17 per cent revenue fall at an online bookshop when recommenders were removed (the review gives one month in section 2.2.3 and a week in section 3.2); click-through 'in most cases not a true measure of business value'; Netflix figure traced to a 2012 blog post and Amazon figure to a 2006 chief executive statement in online media.
Sections 2 to 4; sales increases of one to five per cent on average where business effects are measured directly (sections 3.2 and 4.1); over 26 per cent for one category of an online grocery store; baselines of no recommender, a popularity list or, rarely, another sophisticated method; a news-site test (Garcin et al.) with about 35 per cent higher click-through from a new method and about 100 per cent from changing the widget's position and size; a 17 per cent revenue fall at an online bookshop when recommenders were removed (the review gives one month in section 2.2.3 and a week in section 3.2); click-through 'in most cases not a true measure of business value'; Netflix figure traced to a 2012 blog post and Amazon figure to a 2006 chief executive statement in online media.
Written from the full text read 2026-10-12.
What our sources record
Reproduced as it was written when this source was checked, figures and all.
doi:10.1145/3370082. Preprint arXiv:1908.08328. Full text read (preprint): sections 2 to 4; sales increases of one to five per cent on average where business effects are measured directly (sections 3.2 and 4.1); over 26 per cent for one category of an online grocery store; baselines of no recommender, a popularity list or, rarely, another sophisticated method; a news-site test (Garcin et al.) with about 35 per cent higher click-through from a new method and about 100 per cent from changing the widget's position and size; a 17 per cent revenue fall at an online bookshop when recommenders were removed (the review gives one month in section 2.2.3 and a week in section 3.2); click-through 'in most cases not a true measure of business value'; Netflix figure traced to a 2012 blog post and Amazon figure to a 2006 chief executive statement in online media.