[Activity] Item-based Collaborative Filtering, Hands-On

November 4, 2019
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Back to: Building Recommender Systems with Machine Learning and AI

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Getting Started
- [Activity] Install Anaconda, course materials, and create movie recommendations!
- Course Roadmap
- What is a Recommender System?
- Types of Recommenders
- Understanding You through Implicit and Explicit Ratings
- Top-N Recommender Architecture
- [Quiz] Review the basics of recommender systems.
Introduction to Python [Optional]
- [Activity] The Basics of Python
- Data Structures in Python
- Functions in Python
- [Exercise] Booleans, loops, and a hands-on challenge
Evaluating Recommender Systems
- Train/Test and Cross Validation
- Accuracy Metrics (RMSE, MAE)
- Top-N Hit Rate – Many Ways
- Coverage, Diversity, and Novelty
- Churn, Responsiveness, and A/B Tests
- [Quiz] Review ways to measure your recommender.
- [Activity] Walkthrough of RecommenderMetrics.py
- [Activity] Walkthrough of TestMetrics.py
- [Activity] Measure the Performance of SVD Recommendations
A Recommender Engine Framework
- Our Recommender Engine Architecture
- [Activity] Recommender Engine Walkthrough, Part 1
- [Activity] Recommender Engine Walkthrough, Part 2
- [Activity] Review the Results of our Algorithm Evaluation.
Content-Based Filtering
- Content-Based Recommendations, and the Cosine Similarity Metric
- K-Nearest-Neighbors and Content Recs
- [Activity] Producing and Evaluating Content-Based Movie Recommendations
- A Note about Implicit Ratings
- [Activity] Bleeding Edge Alert! Mise en Scene Recommendations
- [Exercise] Dive Deeper into Content-Based Recommendations
Neighborhood-Based Collaborative Filtering
- Measuring Similarity, and Sparsity
- Similarity Metrics
- User-based Collaborative Filtering
- [Activity] User-based Collaborative Filtering, Hands-On
- Item-based Collaborative Filtering
- [Activity] Item-based Collaborative Filtering, Hands-On
- [Exercise] Tuning Collaborative Filtering Algorithms
- [Activity] Evaluating Collaborative Filtering Systems Offline
- [Exercise] Measure the Hit Rate of Item-Based Collaborative Filtering
- KNN Recommenders
- [Activity] Running User and Item-Based KNN on MovieLens
- [Exercise] Experiment with different KNN parameters.
- Bleeding Edge Alert! Translation-Based Recommendations
Matrix Factorization Methods
- Principal Component Analysis (PCA)
- Singular Value Decomposition
- [Activity] Running SVD and SVD++ on MovieLens
- Improving on SVD
- [Exercise] Tune the hyperparameters on SVD
- Bleeding Edge Alert! Sparse Linear Methods (SLIM)
Introduction to Deep Learning [Optional]
- Deep Learning Introduction
- Deep Learning Pre-Requisites
- History of Artificial Neural Networks
- [Activity] Playing with Tensorflow
- Training Neural Networks
- Tuning Neural Networks
- Introduction to Tensorflow
- [Activity] Handwriting Recognition with Tensorflow, part 1
- [Activity] Handwriting Recognition with Tensorflow, part 2
- Introduction to Keras
- [Activity] Handwriting Recognition with Keras
- Classifier Patterns with Keras
- [Exercise] Predict Political Parties of Politicians with Keras
- Intro to Convolutional Neural Networks (CNN’s)
- CNN Architectures
- [Activity] Handwriting Recognition with Convolutional Neural Networks (CNNs)
- Intro to Recurrent Neural Networks (RNN’s)
- Training Recurrent Neural Networks
- [Activity] Sentiment Analysis of Movie Reviews using RNN’s and Keras
Deep Learning for Recommender Systems
- Intro to Deep Learning for Recommenders
- Restricted Boltzmann Machines (RBM’s)
- [Activity] Recommendations with RBM’s, part 1
- [Activity] Recommendations with RBM’s, part 2
- [Activity] Evaluating the RBM Recommender
- [Exercise] Tuning Restricted Boltzmann Machines
- Exercise Results: Tuning a RBM Recommender
- Auto-Encoders for Recommendations: Deep Learning for Recs
- [Activity] Recommendations with Deep Neural Networks
- Clickstream Recommendations with RNN’s
- [Exercise] Get GRU4Rec Working on your Desktop
- Exercise Results: GRU4Rec in Action
- Bleeding Edge Alert! Deep Factorization Machines
- More Emerging Tech to Watch
Scaling it Up
- [Activity] Introduction and Installation of Apache Spark
- Apache Spark Architecture
- [Activity] Movie Recommendations with Spark, Matrix Factorization, and ALS
- [Activity] Recommendations from 20 million ratings with Spark
- Amazon DSSTNE
- DSSTNE in Action
- Scaling Up DSSTNE
- AWS SageMaker and Factorization Machines
- SageMaker in Action: Factorization Machines on one million ratings, in the cloud
- Other Systems of Note
- Recommender System Architecture
Real-World Challenges of Recommender Systems
- The Cold Start Problem (and solutions)
- [Exercise] Implement Random Exploration
- Exercise Solution: Random Exploration
- Stoplists
- [Exercise] Implement a Stoplist
- Exercise Solution: Implement a Stoplist
- Filter Bubbles, Trust, and Outliers
- [Exercise] Identify and Eliminate Outlier Users
- Exercise Solution: Outlier Removal
- Fraud, The Perils of Clickstream, and International Concerns
- Temporal Effects, and Value-Aware Recommendations
Case Studies
- Case Study: YouTube, Part 1
- Case Study: YouTube, Part 2
- Case Study: Netflix, Part 1
- Case Study: Netflix, Part 2
Hybrid Approaches
- Hybrid Recommenders and Exercise
- Exercise Solution: Hybrid Recommenders
Wrapping Up
- More to Explore
- Continue your Learning Journey!