[R] tm package
Hi, I am using the tm package. When I try to use findfreqterms I get an error message: findfreqterms(dtm,2,5) Error: could not find function findfreqterms Obvious thing such as calling the tm library and a creating document term matrix have been covered. I cannot find any dependencies that findfreqterms has. Can anyone help with this? Thanks __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] optim(,SANN...)
Hi, Can anyone please tell me is there a way to view the annealing schedule when using SANN is optim. I have tried setting report=1 in the control list, but cannot seem to get it to work? Ant help or suggestions would be appreciated! Thanks __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] optim(.. ,SANN,..)
I have a problem using optim, so I am hoping someone can help me out with it:
Suppose I have the list:
list(D,R,P)
[[1]]
V1 V2 V3 V4
1 0 1 0 1
2 1 1 0 0
3 1 0 1 0
4 0 0 1 1
5 0 1 0 1
6 1 1 0 0
7 1 0 1 0
8 0 0 1 1
9 1 0 1 0
10 0 0 1 1
[[2]]
[1] 23 85 12 73 23 24 25 56 78 1200
[[3]]
V1
1 25
2 80
3 15
4 60
5 56
6 15
7 20
8 70
9 45
10 12000
and the strange function fr which I want to maximise:
fr-function(x){y-x*D
C-apply(t(apply(y,1,function(c){c[c0]})),1,prod)
R2-R*C
w-R2[R2P]
g-sum(w)
return(g)}
v-c(1,1,1,1,1,1,1,1,1,1)
res - optim(v, fr, method=SANN,
control=list(maxit=200, temp=20,v))
I get the following error:
Error in prod(..., na.rm = na.rm) : invalid 'type' (list) of argument
I'm not sure if its because this function is too disjoint to be opimised using
SANN or I am not using optim properly.
Any help or suggestions would be appreciated.
Thanks
__
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
[R] reduce matrix
I am trying to reduce the dimension of matrix by removing zero elements and creating a sub-matrix. For example: A= [1,0,0,3; 0,1,2,0; 0,0,3,5] then the new matrix B would be: B= [1,3;1,2;3,5] There are the same number of zero elements in each row of A so dimension of B will not be a problem. Is there a straightforward way to do this in R without writing a function using loops etc? Any help or suggestions would be appreciated! Thanks __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] R-help
I have been trying to write a function for the following problem:
Suppose I have three vectors a,b,c of different lengths:
e.g. a=c(a1,a2,a3,...) where a[i] form the basis of our function variables:
if we define a table for example:
and define the fn(x) -function{..sum(argument)..}
where x-c(a,b,c) so that we can maximise fn(x) as:
optim(...,fn,). So in other words the problem
if to find optimal values for vectors a,b,c. I'm
not sure how to set this problem up as a function
in R. Any help would be much appreciated.
Regards
Lloyd Barcza
- Forwarded by Lloyd Barcza/UK/RoyalSun on
16/11/2009 15:07 -
Lloyd Barcza
Pricing Analyst
Affinity Pricing
Royal SunAlliance
Tel: 01403 234784
Email: lloyd.bar...@uk.rsagroup.com
__
**
MORE THN ® is a trading style of Royal Sun Alliance
Insurance plc (No. 93792). Registered in England and Wales at
St. Mark's Court, Chart Way, Horsham, West Sussex RH12 1XL.
Authorised regulated by the Financial Services Authority
For your protection, telephone calls will be recorded and may be
monitored.
The information in this e-mail is confidential and ma...{{dropped:15}}
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
[R] R-help
I have been trying to write a function for the following problem:
Suppose I have three vectors a,b,c of different lengths:
e.g. a=c(a1,a2,a3,...) where a[i] form the basis of our function variables:
if we define a table for example:
and define the fn(x) -function{..sum(argument)..}
where x-c(a,b,c) so that we can maximise fn(x) as:
optim(...,fn,). So in other words the problem
if to find optimal values for vectors a,b,c. I'm
not sure how to set this problem up as a function
in R. Any help would be much appreciated.
Regards
Lloyd Barcza
- Forwarded by Lloyd Barcza/UK/RoyalSun on
16/11/2009 15:07 -
Lloyd Barcza
Pricing Analyst
Affinity Pricing
Royal SunAlliance
Tel: 01403 234784
Email: lloyd.bar...@uk.rsagroup.com
__
**
MORE THN ® is a trading style of Royal Sun Alliance
Insurance plc (No. 93792). Registered in England and Wales at
St. Mark's Court, Chart Way, Horsham, West Sussex RH12 1XL.
Authorised regulated by the Financial Services Authority
For your protection, telephone calls will be recorded and may be
monitored.
The information in this e-mail is confidential and ma...{{dropped:15}}
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
