Answer:
Here's something to get you started, it's only 157 words but you can't seriously expect me to write an entire essay for you, just copy and paste it into your assignment and add a little bit more information with things you learned in class, I hope this helps you.
Explanation:
Cloud computing systems provide a vast amount of various services, therefore it is difficult for a user to choose a suitable service. Cloud recommender systems are intelligent engines that suggest the best item for users in a cloud environment. Due to the importance of the recommender systems in the cloud environments, this study aimed to systematically investigate the articles and important mechanisms in recommender systems. In this regard, a systematic review of the recommender system's mechanisms which have been used in cloud computing was conducted. We classified the cloud recommender system's mechanisms into four main categories: collaborative filtering, demographic-based, knowledge-based and hybrid. Moreover, this study represented a systematic review and comparison of the above-mentioned techniques in terms of scalability, availability, accuracy, and trust attributes. The results of the present review revealed that previous studies contributed scalability and accuracy to the recommender system, but the contribution of the trust and security improvement has not been considerable well.
