TABLE OF CONTENTS
Overview
Collaborative Filtering is a technique used for recommending products that a user might like based on interactions, data, and preferences collected by the system from other similar users. These algorithms enable you to harness the crowd wisdom to drastically increase cross-sales and overall revenue.
There are two classes of Collaborative Filtering:
User-based: Measures similarity between target users and other users

Item-based: Measure the similarity between the items that target users interact with and other items.

Configuration Examples
Example 1:
Configure this model with the following values:
Type of Collaborative Filtering Model:
Customers who bought this item also bought
1:1 Affinity-based personalization
No
(Optional) Business Rule:
Price > $20
Result:
Recommend products priced greater than $20, that were frequently bought by customers who also bought the item.
Example 2:
Configure this model with the following values:
Type of Collaborative Filtering Model:
Customers who viewed this item also bought
1:1 Affinity-based personalization
Yes
Result:
Recommend products that were frequently bought by customers who also viewed the item. The recommendation results are adapted based on the individual user’s preferences.
Configure Collaborative Filtering
- Choose Assets > Strategies.
- Click New Strategy.
- Choose Contextual > Collaborative Filtering. The Manage Strategy page is displayed. 
- Choose the type of collaborative filtering model from the drop-down: - Customers who bought this item also bought 
- Customers who viewed this item also viewed 
- Customer who viewed this item also bought 
- Customers who added this item to cart also added these to the cart 
- Customers who viewed these items also added these to cart 
- Customers who added this item to cart also bought 
 
- Indicate whether you want to apply 1:1 affinity-based personalization on the model. 
Note: If you choose yes, the configured model parameters will be used as a starting point to deliver product recommendations, and thereafter the recommendations will be based on individual user’s affinities.
- If you want to optionally include business rules, click Add a new business rule. 
- Click Done.