Displaying 20 results from an estimated 4000 matches similar to: "predictive apriori"
2011 Jan 28
1
arules package question- apriori/S4 object export question
I am new to R( but quickly being awed by the range of this it can accomplish,
you have one more convert to the useR universe). I have successfully
implemented the apriori function and are getting great results. My question
concerns how to export these results. I have read lots about write.csv
functions and exporting data frames and other standard objects. Im having
difficulty working with these S4
2013 Oct 31
0
arules package apriori() fn error message XXXX
Hi everybody,
I am using the apriori() fn in the arules package and am encountered an error.
rules <- apriori(rdayst,parameter = list(support = 0.01, confidence = 0.6))
"You chose a very low absolute support count of 0. You might run of memory."
I assume this is related to the value of .01 specified for the support
= argument. If so, what is a safe and reliable max value for
2010 Feb 18
1
how to change number of itemes appeare in right-hand-side of the rule with apriori in R(arules)?
Hi All,
I use arules library, and try to create an association rules for this
transaction file:
a,c,f,3,4,5
b,e,1,2,4
a,c,e,f,1,3,4,5
d,5
b,c,e,f,1,2,3,4
a,c,e,f,1,3,4,5
b,c,e,f,1,3,4
b,e,1,2,4
a,c,e,f,1,3,4,5
a,b,c,e,f,1,3,4
a,c,d,f,3,4,5
I want to get the rule such:
{c,e,f}=> {3,4,5}
I used this command:
ar=apriori(tr, parameter=list(support=.4, confidence=0.8, maxlen=11),
appearance
2008 Mar 14
0
arules package (apriori)
hello,
I want to perform the Apriori association rules algorithm to my data. The set of data contains missing values and consists in a combination of continuous and categorical variables.
After discretizing the continuous variables, I wrote the following instruiction to perform Apriori, but I obtained the following error message:
> rules <- apriori(dd_new,parameter=list(supp=0.5, conf=0.9,
2012 Oct 19
1
multiple graphs, lapply and different titles
I have a list of data.frames, and i want to iterate over this list and
generate graphs with the same title of the data.frame.
I did the graphs with:
lapply(anual, function(x) plot(x[,'chuva'], type='l', xlab= 'anos', ylab =
'Precicipatação(mm)', col='red'))
where anual is list of data.frames. I am plotting just the column "chuva"
at each
2009 Feb 28
0
arules: rules are built on item ordering in the dataframe, rather than
Hi,
I'm trying out the package arules and I'm having a bit of trouble
getting my data to work properly. I have a set of transactions with
the purchased products but each product could appear in a different
column in the data frame. This causes the rules to be built based on
the ordering, which is not significant.
Here is an example:
# # Code:
my.df <- data.frame(
2012 Jan 17
1
arules "killed"
Hi, I recently got a bizarre message when running arules. It just said
"Killed" and quit. Anyone know why this might have happened? I am running R
on an AWS quad xl ubuntu instance.
Here is some information, including dataset size and the parameters:
parameter specification:
confidence minval smax arem aval originalSupport support minlen
maxlen
0.0003581251 0.1 1 none
2012 Jun 25
1
Arules - predict function issues - subscript out of bounds
Hi,
I'm doing a Market Basket Analysis in which I have a list of transaction
id's in column 2 and transactions(product names) in column 1. I read this
into a transaction file using a
txn<-read.transaction(file="data.csv",format='single', rm.duplicates=F,
cols=c(1,2))
If I want to use the apriori algorithm everything seems to be running fine.
However it is when I want
2009 Feb 02
1
Event sequence analysis
Dear R help,
I am analyzing sequences of events described by time and a unique event tag. And
I am searching for recurring patterns where patterns have to show up in a
certain time window, e.g. 5 or 10 minutes. Of course, inbetween these events
other events may occur.
I have applied basket analysis approaches like apriori or 'frequent item set'
algorithms with interesting results but
2006 Nov 22
0
Problem with RWeka-rJava packages
Hello:
I´m trying to execute Apriori(file.arff) command of RWeka package.
I´m working with:
Operating System: Windows XP home
R-2.4.0
RWeka_0.2-11
rJava_0.4-11
classpath= .;C:\Archivos de programa\Java\jdk1.5.0\lib;C:\Archivos de
programa\R\R- 2.4.0\library\RWeka\jar
An error occurs when .jnew command is executed, on class
"weka/core/Instances" :
2013 Mar 11
2
Función Inspect() en "arules" package
Buenas tardes,
Necesito ayuda con la función inspect() del paquete "arules".
Mis comandos son:
r1 <- apriori(tran, parameter=list(support=0.012, confidence=0.7))
r1
summary(r1)
#todo bien, tengo 5 reglas y todo claro en el resume
#pero al pedir
inspect(r1)
inspect(sort(r1, by = "confidence"))
me arroja el error:
Error en UseMethod("inspect", x) :
no
2008 Jul 24
1
How to get rule number in arules
Dear R experts
I generated rules using apriori method in arules package. Though I can access rules using %in% function but I am unable to access a specific rule by its unique identifier number. I want to use rule number for further analysis..
Thanking you in advance.
Daniel
Amsterdam
Send instant messages to your online friends
2012 Jul 06
2
Problem with Apriori
Good morning
When I try to run an Apriori, I keep often the following message:
checking subsets of size 1Error in apriori(tr, parameter = list(supp =
3e-05, conf = 0.05, minlen = 2, :
internal error in trio library
Other time it works fine on the same data. What can be the reason for this?
--
Jolinda Bartlett
Eighty20 Consulting
Tel: 021 460 0440
Fax: 087 625 0649
3.1 East Wing
The Palms
2007 Oct 17
1
How to save association rules generated by arules package
Hi,
I have been able to generate association rules for Market Basket Analysis
using the following codes:
****************************************************************************
*******************************************
library("arules")
rules <- read.csv("write1.csv",na.strings=c(".", "NA", "", "?"),header=TRUE)
2009 Jul 17
1
Arules questions. I need some help please
Question 2a)
I am also working with arules package and I have the following problem
let suppose the matrix b like:
b<-matrix(c(1,1,1,1,1,1,0,0,1,1,1,1,0,0,1,1,0,1,1,1,1,1,1,1),nrow=6)
rownames(b)=c("T1", "T2", "T3", "T4", "T5", "T6")
colnames(b)=c("It1", "It2", "It3", "It4")
bt<-as(b,
2013 May 21
0
Arules: getting rules with only one item in the left-hand side
Hello,
I am using the package arules to generate association rules. I would like
to restrict the rules so that in the left-hand side there's only one
particular element, let's call it "potatoe".
If I do this:
rules <- apriori(dtm.mat, parameter = list(sup = 0.4, conf =
0.9,target="rules"), appearance = list(lhs = c("potatoe")))
I get "potatoe"
2008 Mar 17
0
arules - getting transaction data in
Hi All
Hoping someone can help me with the "transactions" object. I am struggling
to get my data in. I know the answer is in the help somewhere I'm sure, I
just cannot find it. Essentially, I have data in this format (though I can
change it if it particularly unsuitable)
Transaction_id, store , salesman, date_time , items
1 , waterfront, john ,
2009 Jan 06
0
pmml 1.2.0 (predictive modelling markup language)
Version 1.2.0 of pmml has been released and is available from CRAN.
The pmml package (http://rattle.togaware.com/pmml.html) is part of the
Rattle data mining suite http://rattle.togaware.com. It generates
representations of analytic models built in R using the open standard
predictive modelling markup language (http://www.dmg.org/).
PMML represents analytic models in an application independent
2009 Jan 06
0
pmml 1.2.0 (predictive modelling markup language)
Version 1.2.0 of pmml has been released and is available from CRAN.
The pmml package (http://rattle.togaware.com/pmml.html) is part of the
Rattle data mining suite http://rattle.togaware.com. It generates
representations of analytic models built in R using the open standard
predictive modelling markup language (http://www.dmg.org/).
PMML represents analytic models in an application independent
2001 Feb 24
1
PMML- Predictive model markup language
Hi all,
I caught a passing reference to PMML on the WEKA list (I think) .. an XML
way of communicating 'data mining models'. I am of the opinion that XML
is a 'good thing' and I would for instance like to see a standard XML way
of communicating the content and context of datasets (eg of timeseries)
but it has been a long day and my internet connection is slow and so I
have