Lesson 63 - Recommendation System

Which process/system is used behind the spotify new song suggestion?

• Recommendation System

• Semantic Analysis

• Natural Language Processing

• Pattern Recogniton

Select the examples, where Recommendation Algorithm works? [Multiple Answers]

• NetFlix

• YouTube

• Amazon

• Google Classroom

Which filtering uses knowledge of each product to recommend a similar product?

• Content Based Recommender

• Collaborate Filtering

Which filtering uses knowledge of user’s past purchase/selection ?

• Content Based Recommender

• Collaborate Filtering

Recommender systems can be defined as

• Systems that evaluate quality based on the preferences of others with a similar point of view

• Systems that evaluate quality based on the purchase history of any

  particular person only

• Systems that evaluate quality based on the demand of items

• Systems that evaluate quality based on the association rule mining

  techniques

Identify the correct recommendation system's algorithm(s) from

given options.

• Collaborative page ranking

• Item based recommendation system

• Collaborative filtering

• Object based recommendation system

Identify the correct statements related to Collaborative Filtering

• The problem of collaborative filtering is to predict how well a user will like an item that he has not rated given a set of historical preference judgments for a community of users.

• Predict the opinion the user will have on the different items

• Recommend the ‘best’ items based on the user’s previous likings and the opinions of like-minded users whose ratings are similar

• All the listed options

User-Based Collaborative Filtering methods -

• Are based on user's similarity only

• In such methods complexity grows linearly with the number of customers and items

• Suffers the problem of sparsity of recommendations on the data set

• based Item selection Method