search for: smacof

Dear UserR's, The smacof package (see also our PsychoR repository on http://r-forge.r-project.org/projects/psychor/) is uploaded on CRAN. This package provides the following approaches of multidimensional scaling (MDS) based on stress minimization by means of majorization (smacof): - Simple smacof on symmetric dissimil...

...ught MDS (Multi dimensional scaling) as a technique to reduce the ten categories into three or two clusters, and show the similarities among them in a figure. When it comes to MDS, I could not convert the data into dissimilarity matrix due to data structure. I found out similar preference data in smacof package: data(breakfast,package="smacof") But, this data(breakfast) includes ranking of all the categories while my data has limited place (three ranks/variables for ten categories). Plus, while breakfast data includes limited cases and many variable, but my data is individual based a...

...jects for 10 individuals rating the dissimilarities (on a 100-point scale) of the same 10 faces (analogous to the bread data). I would like to get an individual differences scaling jointly for the individual judges and the faces, and plot them on the same axes. This is the example: library(smacof) data(breakfast) res.rect<-smacofRect(breakfast, itmax = 1000) plot(res.rect, joint = TRUE, xlim = c(-10, 10)) However, smacofIndDiff() doesn't produce the desired form of output. This is the bread example, which has data in roughly the same form as mine: data(bread) res.uc <- smacof...

...od and AIC (Subha P. T.) > 3. Re: (no subject) (Peter Flom) > 4. how to make the dynamically creted string work inside if as a > condition (Moumita Das) > 5. Re: how to make the dynamically creted string work inside if > as a condition (Duncan Murdoch) > 6. SMACOF joint configuration plot with bread data? (Michael Kubovy) > 7. No --no-latex? (Jim Lemon) > 8. Re: No --no-latex? (Duncan Murdoch) > 9. Re: Rpad - avoid removal of manually created html-tags in R > chunk (Martin Gartner) > 10. Re: No --no-latex? (Peter Dalgaard) &gt...

...spline bases. The vignette for the package (not added yet) is a paper also submitted to the special psychoR issue of JSS. You can get a preprint at http://idisk.mac.com/jdeleeuw-Public/psychoR/anacor.zip The psychoR directory also has the anacor package, the homals package, and the homals paper. smacof (many forms of multidimensional scaling) is next. ========================================================== Jan de Leeuw, 11667 Steinhoff Rd, Frazier Park, CA 93225 home 661-245-1725 mobile 661-231-5416 work 310-825-9550 .mac: jdeleeuw +++ aim: deleeuwjan +++ skype: j_deleeuw ===================...

...d to add some plots specific to CCA. Updates will be posted to members of http://www.stat.ucla.edu/mailman/listinfo/albertgifi The directory http://www.cuddyvalley.org/psychoR/ also has updated code for logistic unfolding, for distance association models, for multidimensional scaling using the smacof algorithm and for multidimensional scaling using alscal. ========================================================== Jan de Leeuw, 11667 Steinhoff Rd, Frazier Park, CA 93225, 661-245-1725 .mac: jdeleeuw ++++++ aim: deleeuwjan ++++++ skype: j_deleeuw homepages: http://www.cuddyvalley.org and http:/...

...spline bases. The vignette for the package (not added yet) is a paper also submitted to the special psychoR issue of JSS. You can get a preprint at http://idisk.mac.com/jdeleeuw-Public/psychoR/anacor.zip The psychoR directory also has the anacor package, the homals package, and the homals paper. smacof (many forms of multidimensional scaling) is next. ========================================================== Jan de Leeuw, 11667 Steinhoff Rd, Frazier Park, CA 93225 home 661-245-1725 mobile 661-231-5416 work 310-825-9550 .mac: jdeleeuw +++ aim: deleeuwjan +++ skype: j_deleeuw ===================...

Hi, I want to know whether there is any function in R to find STRESS after using cmdscale and estimating the coordinates, I have written these functions to find stress (for p =1,2,3,4,5) stress<-rep(0,5) for(p in 1:5) { datahat<-cmdscale(d,p) deltahat<-as.matrix(dist(datahat)) a<-0 b<-0 for(i in 1:n) { for(j in 1:n) { a<-d[i,j]^2+a b<-(d[i,j]-deltahat[i,j])^2+b } }

...optimization routines -- currently has pooled-adjacent-violaters for monotone regression and the hildreth-desopo coordinate descent method for quadratic programming). Status: will grow. -- ca package (simple correspondence analysis with various plotting options). Status: done. -- smacof package (metric and nonmetric multidimensional scaling, individual difference models, rectangular matrices, constrained scaling, metric nearness problem, Shepard-Luce models). Status: mostly done. -- logitfold package (logistic likelihood solution to nonmetric unfolding for binary...

...(2.3.4), seas (0.3-9), seewave (1.5.8), segclust (0.76), segmented (0.2-7.1), SEL (1.0-2), sem (0.9-20), sendplot (3.8.6), seqinr (2.0-9), seriation (1.0-2), sets (1.0-6), simFrame (0.2), simone (1.0-0), simPopulation (0.1.2), SIS (0.5), SiZer (0.1-2), skmeans (0.1-5), slam (0.1-13), sm (2.2-4.1), smacof (1.0-1), smoothSurv (0.7), sn (0.4-15), sna (2.1-0), snowfall (1.84), snowFT (1.2-0), som (0.3-5), someKfwer (1.1), sos (1.3-0), sp (0.9-65), spam (0.22-0), sparcl (1.0.1), spatgraphs (2.37), spatial (7.3-2), spatialsegregation (2.18), spatstat (1.19-3), spBayes (0.1-8), spcosa (0.2-1), spdep (0.5-...