Machine Learning: Recommender Systems & Dimensionality Reduction

Description

About this Course
Case Study: Recommending Products How does Amazon recommend products you might be interested in purchasing? How does Netflix decide which movies or TV shows you might want to watch? What if you are a new user, should Netflix just recommend the most popular movies? Who might you form a new link with on Facebook or LinkedIn? These questions are endemic to most service-based industries, and underlie the notion of collaborative filtering and the recommender systems deployed to solve these problems. In this fourth case study, you will explore these ideas in the context of recommending products based on customer reviews. In this course, you will explore dimensionality reduction techniques for modeling high-dimensional data. In the case of recommender systems, your data is represented as user-product relationships, with potentially millions of users and hundred of thousands of products. You will implement matrix factorization and latent factor models for the task of predicting new user-product relationships. You will also use side information about products and users to improve predictions. Learning Outcomes: By the end of this course, you will be able to: -Create a collaborative filtering system. -Reduce dimensionality of data using SVD, PCA, and random projections. -Perform matrix factorization using coordinate descent. -Deploy latent factor models as a recommender system. -Handle the cold start problem using side information. -Examine a product recommendation application. -Implement these techniques in Python.
Subtitles available in English



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