- """
- # Python 2.7
- # Filename: apriori.py
- # Author: llhthinker
- # Email: hangliu56[AT]gmail[DOT]com
- # Blog: http://www.cnblogs.com/llhthinker/p/6719779.html
- # Date: 2017-04-16
- """
- def load_data_set():
- """
- Load a sample data set (From Data Mining: Concepts and Techniques, 3th Edition)
- Returns:
- A data set: A list of transactions. Each transaction contains several items.
- """
- data_set = [['l1', 'l2', 'l5'], ['l2', 'l4'], ['l2', 'l3'],
- ['l1', 'l2', 'l4'], ['l1', 'l3'], ['l2', 'l3'],
- ['l1', 'l3'], ['l1', 'l2', 'l3', 'l5'], ['l1', 'l2', 'l3']]
- return data_set
- def create_C1(data_set):
- """
- Create frequent candidate 1-itemset C1 by scaning data set.
- Args:
- data_set: A list of transactions. Each transaction contains several items.
- Returns:
- C1: A set which contains all frequent candidate 1-itemsets
- """
- C1 = set()
- for t in data_set:
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Apriori算法介绍(Python实现)
作者: 来源: 2017-04-19 08:55:49 阅读次 我要评论
关键词: 探索发现
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