Problem overviews

We will organize this section into overviews on select topics in a sequential order. Here are the topics we are going to cover:

• Recommendations on Amazon 
• Recommendation systems, also known as recommender systems or recommendation engines
• Categorizing recommendations, such as:
• Implicit recommendations 
• Explicit recommendations 

• Recommendations for machine learning
• Problem formulation for explicit recommendations—the details
• Weapon sales leads and past sales data—the details

 Each topic will be reviewed with an explanation. We will start with the first topic—Recommendations on Amazon.

Recommendations on Amazon

This topic is presented in two parts—a Brief...