Displaying 20 results from an estimated 500 matches similar to: "fPortfolio constraints, maxsumW"
2017 Dec 27
1
Error in dimnames in R
Could anyone help me with some little problem? When I plot the frontier I
get the following message: *"Error in dimnames(x) <- dn : length of
'dimnames' [1] not equal to array extent"*(see below for detail). How could
I solve this. Thanks a lot.
##---------------------------- Portfolio construction &
Optimisation------------------------
#Assets: LUTAX,
2012 Sep 04
0
Calculate a minimum-variance portfolio with fPortfolio
Hello everybody,
I'm running into an issue with the fPortfolio package.
1. What I want:
Calculate the minimum-variance portfolio on 20 assets with respect to the
following constraints:
- min weight per asset = 0% (i.e. no short-selling)
- max weight per asset = 10%
- min sum of asset weights = 100% (i.e. fully invested)
- max sum of asset weights = 100% (i.e. no leverage)
2. What I
2010 Feb 03
0
About the risk code in the fportfolio package
Hello,
I have a problem with fPortfolio recently. I am using below code:
Data = read.table("hf.txt",header = TRUE,sep = "")
Data = Data[, c("CA", "SS", "EM", "EMN", "ED", "DS", "MS", "RA", "FIA",
"GM", "LSE", "MF", "SP500", "NASDAQ",
2008 Sep 03
1
portfolio.optim and assets with weigth equals to zero...
Hello.
I don't understand a particular output of portfolio.optim (tseries).
I have 4 assets and the portfolio.optim returns an asset with weight equals
to zero.
If I do a portfolio.optim with 3 assets, without the asset with weight
equals to zero,
it returns a completely different result.
That's I would expected the same weights as the run with 4 assets.
Below the code.
Thanks in
2011 Jan 25
0
Problems plotting the efficient frontier with fPortfolio
Hello, I have some simulations of financial data, I have 17 variables
simulated 1000 times to three horizons. I am tring to plot the efficient
frontier which I already obtained using th fPortfolio package. I am using
the following commands:
Data=timeSeries(X[1,,])
lppSpec <- portfolioSpec()
longFrontier <- portfolioFrontier(Data, lppSpec)
plot(longFrontier)
Selección: 1
Error en
2009 Sep 29
3
How do I access class slots from C?
Hi
I'm trying to implement something similar to the following R snippet using
C. I seem to have hit the wall on accessing class slots using C.
library(fPortfolio)
lppData <- 100 * LPP2005.RET[, 1:6]
ewSpec <- portfolioSpec()
nAssets <- ncol(lppData)
setWeights(ewSpec) <- rep(1/nAssets, times = nAssets)
ewPortfolio <- feasiblePortfolio(
data = lppData,
spec = ewSpec,
2013 Jan 06
0
fPortfolio-portfolio optimization
Hello everyone,
I have been spending many hours on a seemingly simple portfolio optimization problem using the package fPortfolio.
My optimization problem is slightly different than a standard one such that I have a known set of asset returns. My problem is how to collect this information into my functions and pass them onto the optimization function.
I have written my own covariance estimation
2011 Jul 10
1
Code Help
Am I missing a Package? I'm not sure why is won't read the functions. Any
help is much appreciated.
> PData = Data[,3:10]
> Spec = portfolioSpec()
Error: could not find function "portfolioSpec"
> setTargetReturn(Spec) = mean(colMeans(PData))
Error in setTargetReturn(Spec) = mean(colMeans(PData)) :
object 'Spec' not found
> Constraints =
2012 Feb 15
2
Control number of assets in resulting portfolio with optimizations using package fPortfolio
Dear All,
I am using package fPortfolio to run minimum variance portfolio
optimizations in R. I already know how to set portfolioSpecs, portfolio
objects and constraints. Unfortunately I am not able to set the following
type of constraints.
I have a timeSeries object with returns data for roughly 1.5k assets for 261
subperiods (workingdays) and want to compute the global minimum variance
2005 Jun 01
1
Problem with fPortfolio
Hello,
I hesitate to call this a bug, because I could have forgotten something
important, but the MarkowitzPortfolio example in fPortfolio does not work
for me. Here's my code:
> library(fPortfolio)
>
>xmpPortfolio("\nStart: Load monthly data set of returns > ")
> data(berndtInvest)
> # Exclude Date, Market and Interest Rate columns from data
2011 Mar 28
1
portfolioBacktest in fPortfolio
Hello. I am trying to use the portfolio backtesting function in fPortfolio
package, but I don't now why in my version of fPortfolio I don't have either
the portfolioBactest nor the portfolioBacktesting functions. Does anybody
knows what might be going on?
thank you
Felipe Parra
[[alternative HTML version deleted]]
2007 Sep 21
1
fPortfolio Package
Hello,
I would like to do a portfolio optimization in R and I tried to use the
function in "fPortfolio", but it appears there does not exist such function.
Could anyone give me some advice?
Many thanks
--
View this message in context: http://www.nabble.com/fPortfolio-Package-tf4492927.html#a12813809
Sent from the R help mailing list archive at Nabble.com.
2010 Jan 21
0
fPortfolio prob: maxreturnPortfolio() returns Na/NaN/Inf error
Hi - First posting here.
I am using fPortfolio to try and optimize a simple portfolio consisting of 5 daily return series. I want to maximize return subject to setTargetRisk(myspec)=0.08 using only constraints="LongOnly"
I can run feasiblePortfolio() using a spec file that specifies the weights, and it works fine.
When I run maxreturnPortfolio(mydata,myspec,"LongOnly"),
2009 Nov 11
1
Help with fPortfolio
Hi
I'm getting the following errors while using the efficientPortfolio function
even though I'm setting the target return to the mean of the TargetReturn I
obtain from the portfolio object created by the feasiblePortfolio function.
First Error:
Error: targetReturn >= min(mu) is not TRUE
Second Error:
Error in .rquadprog(Dmat = args$Dmat, dvec = args$dvec, Amat = args$Amat, :
2009 Sep 16
2
I want to get a reference to this time series object
I'm trying to get a reference to this object in C
SWX.RET[1:6,c("SBI,"SPI","SII")]
While i am able to access and use a plain SWX.RET object, I'm getting
confused on how to create an object with the array subscripts like above.
Here is what I tried to do. It doesn't work because "[" is obviously not an
operation or function on SWX.RET. So how do I
2005 May 13
1
cupsaddsmb problem
Hi all,
I have a problem with adding point and print to a print server. The server
details are as follows:
700MHz Celeron + 384MB RAM
Mandriva LE2005 (Mandrake 10.2)
Samba 3.0.13-2mdk
CUPS 1.1.23
cups drivers 10.2-0.11
gimpprint-cups 2-1.1.23-11
foomatic 3.0.2-1
The server is bound to an NT4 based domain (to be replaced with Linux/Samba in
the summer) and winbind works fine with wbinfo -u and
2018 Dec 13
3
[PATCH v6 0/7] Add virtio-iommu driver
Hi Joerg,
On 12/12/2018 10:35, Joerg Roedel wrote:
> Hi,
>
> to make progress on this, we should first agree on the protocol used
> between guest and host. I have a few points to discuss on the protocol
> first.
>
> On Tue, Dec 11, 2018 at 06:20:57PM +0000, Jean-Philippe Brucker wrote:
>> [1] Virtio-iommu specification v0.9, sources and pdf
>>????
2018 Dec 13
3
[PATCH v6 0/7] Add virtio-iommu driver
Hi Joerg,
On 12/12/2018 10:35, Joerg Roedel wrote:
> Hi,
>
> to make progress on this, we should first agree on the protocol used
> between guest and host. I have a few points to discuss on the protocol
> first.
>
> On Tue, Dec 11, 2018 at 06:20:57PM +0000, Jean-Philippe Brucker wrote:
>> [1] Virtio-iommu specification v0.9, sources and pdf
>>????
2018 Dec 20
1
[PATCH v6 0/7] Add virtio-iommu driver
On 19/12/2018 23:09, Michael S. Tsirkin wrote:
> On Thu, Dec 13, 2018 at 12:50:29PM +0000, Jean-Philippe Brucker wrote:
>>>> [3] git://linux-arm.org/linux-jpb.git virtio-iommu/v0.9.1
>>>> ???? git://linux-arm.org/kvmtool-jpb.git virtio-iommu/v0.9
>>>
>>> Unfortunatly gitweb seems to be broken on linux-arm.org. What is missing
>>> in this
2018 Nov 27
3
[PATCH v5 0/7] Add virtio-iommu driver
Hi Michael,
On 11/27/18 5:53 PM, Michael S. Tsirkin wrote:
> On Thu, Nov 22, 2018 at 07:37:54PM +0000, Jean-Philippe Brucker wrote:
>> Implement the virtio-iommu driver, following specification v0.9 [1].
>>
>> Since v4 [2] I fixed the issues reported by Eric, and added Reviewed-by
>> from Eric and Rob. Thanks!
>>
>> I changed the specification to fix one