apriori

Load a dataset into R with data() using a variable instead of the dataset name

99封情书 提交于 2019-11-30 18:12:03
I am trying to load a dataset into R using the data() function. It works fine when I use the dataset name (e.g. data(Titanic) or data("Titanic") ). What doesn't work for me is loading a dataset using a variable instead of its name. For example: # This works fine: > data(Titanic) # This works fine as well: > data("Titanic") # This doesn't work: > myvar <- Titanic > data(myvar) **Warning message: In data(myvar) : data set ‘myvar’ not found** Why is R looking for a dataset named "myvar" since it is not quoted? And since this is the default behavior, isn't there a way to load a dataset stored in a

Apriori Algorithm

巧了我就是萌 提交于 2019-11-30 13:31:13
问题 I've heard about the Apriori algorithm several times before but never got the time or the opportunity to dig into it, can anyone explain to me in a simple way the workings of this algorithm? Also, a basic example would make it a lot easier for me to understand. 回答1: Well, I would assume you've read the wikipedia entry but you said "a basic example would make it a lot easier for me to understand". Wikipedia has just that so I'll assume you haven't read it and suggest that you do. Read the

Apriori Algorithm

对着背影说爱祢 提交于 2019-11-30 07:55:10
I've heard about the Apriori algorithm several times before but never got the time or the opportunity to dig into it, can anyone explain to me in a simple way the workings of this algorithm? Also, a basic example would make it a lot easier for me to understand. Well, I would assume you've read the wikipedia entry but you said "a basic example would make it a lot easier for me to understand". Wikipedia has just that so I'll assume you haven't read it and suggest that you do. Read the wikipedia article. Apriori Algorithm It is a candidate-generation-and-test approach for frequent pattern mining

How to get items for both LHS and RHS for only specific columns in arules?

白昼怎懂夜的黑 提交于 2019-11-30 05:45:47
问题 Within the apriori function, I want the outcome to only contain these two variables in the LHS HouseOwnerFlag=0 and HouseOwnerFlag=1 . The RHS should only contain attributes from the column Product . For instance: # lhs rhs support confidence lift # 1 {HouseOwnerFlag=0} => {Product=SV 16xDVD M360 Black} 0.2500000 0.2500000 1.000000 # 2 {HouseOwnerFlag=1} => {Product=Adventure Works 26" 720p} 0.2500000 0.2500000 1.000000 # 3 {HouseOwnerFlag=0} => {Product=Litware Wall Lamp E3015 Silver} 0

Load a dataset into R with data() using a variable instead of the dataset name

对着背影说爱祢 提交于 2019-11-30 02:01:50
问题 I am trying to load a dataset into R using the data() function. It works fine when I use the dataset name (e.g. data(Titanic) or data("Titanic") ). What doesn't work for me is loading a dataset using a variable instead of its name. For example: # This works fine: > data(Titanic) # This works fine as well: > data("Titanic") # This doesn't work: > myvar <- Titanic > data(myvar) **Warning message: In data(myvar) : data set ‘myvar’ not found** Why is R looking for a dataset named "myvar" since it