Frequent Item Sets - Brown University
Frequent Item Sets
Chau Tran & Chun-Che Wang
Outline
1. Definitions Frequent Itemsets Association rules
2. Apriori Algorithm
Frequent Itemsets
What? Why? How?
Motivation 1: Amazon suggestions
Amazon suggestions (German version)
Motivation 2: Plagiarism detector
Given a set of documents (eg. homework handin)
Find the documents that are similar
Motivation 3: Biomarker
Given the set of medical data
For each patient, we have his/her genes, blood proteins, diseases
Find patterns which genes/proteins cause which diseases
What do they have in common?
A large set of items
things sold on Amazon set of documents genes or blood proteins or diseases
A large set of baskets
shopping carts/orders on Amazon set of sentences medical data for multiple of patients
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