Exclude Product from Recommendation

[Former Member]

Hi experts,

I created a recommendation model Top Seller in the Recommendation scenario Top Sellers in Web Home Page.

The requirement is to remove a certain product from the recommendation, so that it does not play on the website.

In the screenshot you can see the recommendation model, the algorithm and the preview. The product you see in the preview shall be exclude.

Thanks for helping!

Christiane

[former_member197728]

Hi Christiane,

I see two possible solutions here.

• One is using the pre-filter on product level (your second screenshot). Can you identify the products you don't want to recommend using an existing pre-filter (e.g. by product category, brand, validity?). As the name suggests, pre-filters limit the products which are evaluated by the algorithm (in your case the top seller algorithm).
  Here you can find more information about pre-filters: https://help.sap.com/viewer/b88f770e4b7c4ecead5477e7a6c7b8f7/1908.500/en-US/2f069431f21e41fd9876d32e...
• If you can't identify them via a pre-filter, you can create a custom algorithm as described in my article and build your custom filter logic via a SAP HANA view:
  https://www.sap.com/cxworks/article/435946599/How_to_Implement_Custom_Algorithms_for_Product_Recomme...

Hope this helps! Please mark your question as answered if my comment has helped.

Best regards,

Tim

[Former Member]

Hi Tim,

thank you for your quick reply!

So for understanding, it is not possible to exclude out of the box just one single product?

Best wishes

Christiane

[former_member197728]

Hi Christiane,

well, if you can identify that one single product (e.g. by a standard or custom field) it's possible out of the box via a pre-filter.

Here you can find more information about adding custom fields as pre-filters.

The pre-filter also supports the "exclude" operator.

https://help.sap.com/viewer/13d84c47bb6749a188fd53915c256516/1908.500/en-US/9a3ebe13094147ecb95612e0...

Best regards,

Tim

[angelo_vaikousis]

Hi Christiane,

In case you haven't found a solution yet you can try this approach as well.

The intention of the below method is to rank products but I think is the easiest way to manage this use case if the number of products is small.

Include a "Position Products" step as a last step in the model and include the "Position a product" algorithm.

In the parameters tabs set the following parameters:

Force Item: False (You only want to rank/remove the product only if it's being recommended by the previous steps).

Item: The product you want to exclude

Rank: 21 (a number higher than the number of products to recommend. i.e. 21 if model returns 20 products).

this will move the product if it was in the list of recommended products out of the list and the original product that was in the 21 spot will be moved in the 20th spot.

Just be careful if you plan to remove multiple products just keep adding an algorithm for each product and keep track of the ranking you enter for each product.

Remember that you can remove the steps that don't have any algorithms to keep the model clean.

Best regards,

Angelo