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PROJECT

# Apriori Algorithm for Finding Frequent Itemsets with PySpark

Implement the Apriori algorithm to find frequent itemsets for market basket analysis.

You will learn to:

Use PySpark to build distributed computing projects.

Implement the Apriori algorithm for mining frequent itemsets.

Skills

Data Science

Distributed Architecture

Data Mining

Prerequisites

Intermediate Python coding skills

Familiarity with distributed computing concepts

Basic working knowledge of PySpark

Technologies

Python

PySpark

Project Description

Letâ€™s say we run a grocery store and have a good amount of data from the point of sale. We want the sets of items frequently bought together to be placed on shelves near each other to boost sales and increase customer convenience. To achieve this, we can use the Apriori algorithm. Itâ€™s much faster than its brute-force variant and can be implemented in a distributed computing scenario.

Weâ€™ll first write the Python code for the parallel processing of dataset partitions at the worker nodes. Weâ€™ll then write the final central itemset frequency check by the master node. The code weâ€™ll write can be run on a compute cluster for a full flavor of distributed computing.

Project Tasks

1

Getting Started

Task 0: Introduction

Task 1: Import the Libraries and Set Up the Environment

2

Distributed Combination Generation

Task 2: Generate Combinationsâ€”Parent Intersection Property

Task 3: Generate Combinationsâ€”Subset Frequency Property

Task 4: Count Check

Task 5: Generate k-Size Combinations

Task 6: Generate Singles

Task 7: The Worker Partition Mapper

3

Filtering at the Master Node

Task 8: Load Data and Preprocess

Task 9: The Distributed Transform

Task 10: Auxiliary Function to Check Presence

Task 11: Count Check at Master

Congratulations!