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15.12 Release Notes (August 13, 2015)


  • Currency multipliers: in the Site Configurations page, we enforce validation of currency multiplies (allowed values are 100 or 1) so that users don't specify incorrect currency multiplier values. (
  • When changes were made to the Site Configurations page, it caused the page to refresh, and then the focus changed to the top of the page. We fixed the window focus to stay on the changed field after a page refresh. (
  • U/X improvements to the Category navigation page. (

Note: the Vimeo password is "demo"


New region-aware TopSellers, TopProducts, and PopularProducts models/strategies

For clients who run region-based businesses where products and inventories differ, the region-aware Top Sellers, Top Products, and Popular Products models/strategies will bring an added level of accuracy to the recommendations presented to shoppers in the specified region. Learn more: Recommendations Strategies Guide.

Price is no longer required in the delta feed

Clients who want to provide delta feeds are no longer required to include price in the feed. Learn more: Flat File Delta Feed.


Improve global rank methodology: inverse ranking

We create a global ranking that is calculated by combining multiple component product rankings. This determines the best products to display for a category. It's shown to users with no view or purchase history. Examples of component product ranking: number of units sold, click through rate, newness, etc. In our Dashboard, site administrators are able to specify relative weights for each component product rankings to denote whether click through rate should be more important than number of units sold.

The current methodology is linear ranking. It combines the component product rankings to calculate a global rank. With linear ranking, a product that scores poorly on one of the component ranks (for example, newness) tends to score poorly in the global rank. In this release, we have a new method: inverse ranking. It's more democratic, and will score a product well even if one or two component product ranks are poor.

Clients can turn on inverse ranking in the Dashboard (click Admin, and then click Site Configuration). Clients can then test via a Site Configuration MVT. We will run live tests of this feature to validate its performance in the next few weeks. If the results are good, we plan to deploy inverse ranking to all Discover installations.

Science and MVT​

Strategy replacement tests

When running a strategy replacement test type of MVT, the alternate strategy is now logged explicitly and is now visible in dashboard reporting. The old behavior was that views, clicks, and sales of the alternate strategy would be logged as if they were from the control strategy. This impeded our ability to use the King of the Hill Optimizer on the alternate strategy.

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