《人工智能与数据挖掘教学》l(2)

1、2022-1-11编辑ppt12022-1-11编辑ppt22022-1-11编辑ppt32022-1-11编辑ppt42022-1-11编辑ppt52022-1-11编辑ppt62022-1-11编辑ppt72022-1-11编辑ppt82022-1-11编辑ppt9Transaction IDItems Bought2000A,B,C1000A,C4000A,D5000B,E,FCustomerbuys diaperCustomerbuys bothCustomerbuys beer2022-1-11编辑ppt10Transaction ID Items Bought2000A,B,C10

2、00A,C4000A,D5000B,E,FFrequent Itemset SupportA75%B50%C50%A,C50%Min. support 50%Min. confidence 50%2022-1-11编辑ppt112022-1-11编辑ppt12TID Items100 1 3 4200 2 3 5300 1 2 3 5400 2 5Database Ditemset sup.1223334153itemset sup.12233353Scan DC1L1itemset1 21 31 52 32 53 5itemset sup1 211 321 512 322 533 52ite

3、mset sup1 322 322 533 52L2C2C2Scan DC3L3itemset2 3 5Scan Ditemset sup2 3 522022-1-11编辑ppt132022-1-11编辑ppt142022-1-11编辑ppt152022-1-11编辑ppt16Min-support = 20%Min-confidence =70%2022-1-11编辑ppt17Table 3.3 A Subset of the Credit Card Promotion DatabaseMagazineWatchLife InsuranceCredit CardPromotionPromot

4、ionPromotionInsuranceSexYesNoNoNoMaleYesYesYesNoFemaleNoNoNoNoMaleYesYesYesYesMaleYesNoYesNoFemaleNoNoNoNoFemaleYesNoYesYesMaleNoYesNoNoMaleYesNoNoNoMaleYesYesYesNoFemale2022-1-11编辑ppt18Table 3.4 Single-Item Sets Si ngl eSi ngl e- -I tem SetsI tem Sets N um ber of I tem sN um ber of I tem s M agazi

5、ne Prom oti on = Yes 7 W atch Prom oti on = Yes 4 W atch Prom oti on = N o 6 Li fe I nsurance Prom oti on = Yes 5 Li fe I nsurance Prom oti on = N o 5 C redi t C ard I nsurance = N o 8 Sex = M al e 6 Sex = Fem al e 4 Min support = 42022-1-11编辑ppt19Table 3.5 Two-Item SetsTwo-Item SetsNumber of ItemsM

6、agazine Promotion = Yes & Watch Promotion = No4Magazine Promotion = Yes & Life Insurance Promotion = Yes5Magazine Promotion = Yes & Credit Card Insurance = No5Magazine Promotion = Yes & Sex = Male4Watch Promotion = No & Life Insurance Promotion = No4Watch Promotion = No & Cre

7、dit Card Insurance = No5Watch Promotion = No & Sex = Male4Life Insurance Promotion = No & Credit Card Insurance = No5Life Insurance Promotion = No & Sex = Male4Credit Card Insurance = No & Sex = Male4Credit Card Insurance = No & Sex = Female4Frequent Three-item Sets:2022-1-11编辑ppt202022-1-11编辑ppt212022-1-11编辑ppt222022-1-11编辑ppt232022-1-11编辑ppt242022-1-11编辑ppt25TID Dateite