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Data Mining: Associations

Data Mining: Associations

Data Mining: Associations. Frequent itemsets, market baskets A-priori algorithm Hash-based improvements One- or two-pass approximations High-correlation mining. Purpose. If people tend to buy A and B together, then a buyer of A is a good target for an advertisement for B.

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782 views • 61 slides
Data Mining of Very Large Data

Data Mining of Very Large Data

Data Mining of Very Large Data. Frequent itemsets, market baskets A-priori algorithm Hash-based improvements One- or two-pass approximations High-correlation mining. The Market-Basket Model. A large set of items , e.g., things sold in a supermarket.

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581 views • 50 slides
CPS 196.03: Information Management and Mining

CPS 196.03: Information Management and Mining

CPS 196.03: Information Management and Mining. Association Rules and Frequent Itemsets. Let Us Begin with an Example. A common marketing problem: examine what people buy together to discover patterns. What pairs of items are unusually often found together at Kroger checkout?

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562 views • 45 slides
Association Rules

Association Rules

Association Rules. Market Baskets Frequent Itemsets A-priori Algorithm. The Market-Basket Model. A large set of items , e.g., things sold in a supermarket. A large set of baskets , each of which is a small set of the items, e.g., the things one customer buys on one day. Support.

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365 views • 34 slides
Association Rules

Association Rules

Association Rules. Apriori Algorithm. Item. Item. Basket 1. Item. Item. Item. Item. Basket 2. Item. Item. Item. Item. Basket 3. Item. Item. Etc. Computation Model. Typically, data is kept in a flat file rather than a database system. Stored on disk. Stored basket-by-basket.

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528 views • 30 slides
Mining Associations

Mining Associations

Mining Associations. Apriori Algorithm. Item. Item. Basket 1. Item. Item. Item. Item. Basket 2. Item. Item. Item. Item. Basket 3. Item. Item. Etc. Computation Model. Typically, data is kept in a flat file rather than a database system. Stored on disk. Stored basket-by-basket.

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523 views • 29 slides

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