Design a recommendation system using Neo4j for an e-commerce platform.

Collaborative filtering with Neo4j: Data model: (:User)-[:PURCHASED {date, amount}]->(:Product), (:User)-[:VIEWED {count}]->(:Product), (:Product)-[:IN_CATEGORY]->(:Category). 1) Item-based: 'Customers who bought X also bought': MATCH (product:Product {id:'laptop123'})<-[:PURCHASED]-(user:User)-[:PURCHASED]->(other:Product) WHERE other <> product RETURN other.name, COUNT(user) AS cobuyers ORDER BY