The mvpart Package - NexTag Supports Open Source Initiatives

More documents

Recommendations

Info

32 rpart.mrt rpart.matrix Creates a Model Matrix from a Call to Rpart Description Creates a model matrix from a call to rpart. Usage rpart.matrix(frame) Arguments frame model frame (from call to rpart) Value Returns a matrix from the frame of class matrix. Used internally by the function rpart. rpart.mrt Set up for ‘mrt’ Method for an Rpart Model Description Set up for mrt method for an rpart model. Usage rpart.mrt(y, offset, parms, wt) Arguments y offset parms wt the responses. an offset, or NULL. a list of parameters, usually empty. case weights. Details rpart.mrt is to be used only by the function rpart.
part.object 33 Value Returns a list consisting of y parms numresp summary text bar (subtracting offset if necessary), as input, the number of responses, a function to be invoked by summary.rpart, a function to be invoked by text.rpart. a function to be invoked by text.rpart. rpart.object Recursive Partitioning and Regression Trees Object Description Value These are objects representing fitted rpart trees. frame where splits data frame with one row for each node in the tree. The row.names of frame contain the (unique) node numbers that follow a binary ordering indexed by node depth. Elements of frame include var, the variable used in the split at each node (leaf nodes are denoted by the string ), n, the size of each node, wt, the sum of case weights for the node, dev, the deviance of each node, yval, the fitted value of the response at each node, and splits, a two column matrix of left and right split labels for each node. All of these are the same as for an rpart object. Extra response information is in yval2, which contains the number of events at the node (poisson), or a matrix containing the fitted class, the class counts for each node and the class probabilities (classification). Also included in the frame are complexity, the complexity parameter at which this split will collapse, ncompete, the number of competitor splits retained, and nsurrogate, the number of surrogate splits retained. vector, the same length as the number of observations in the root node, containing the row number of frame corresponding to the leaf node that each observation falls into. a matrix describing the splits. The row label is the name of the split variable, and columns are count, the number of observations sent left or right by the split (for competitor splits this is the number that would have been sent left or right had this split been used, for surrogate splits it is the number missing the primary split variable which were decided using this surrogate), ncat, the number of categories or levels for the variable (+/-1 for a continuous variable), improve, which is the improvement in deviance given by this split, or, for surrogates, the concordance of the surrogate with the primary, and split, the
Page 1 and 2: The mvpart Package February 16, 200
Page 3 and 4: cmds.diss 3 Usage data(car.test.fra
Page 5 and 6: descendants 5 descendants Descendan
Page 7 and 8: kyphosis 7 Value Should be intercha
Page 9 and 10: makeForm 9 Value collapse logical.
Page 11 and 12: model.frame.rpart 11 ylab y-axis la
Page 13 and 14: na.rpart 13 Value bars legend bord
Page 15 and 16: plot.rpart 15 Value A named (by nod
Page 17 and 18: plotcp 17 plotcp Plot a Complexity
Page 19 and 20: predict.rpart 19 Side Effects a plo
Page 21 and 22: print.rpart 21 print.rpart Print an
Page 23 and 24: prune.rpart 23 Examples data(car.te
Page 25 and 26: part 25 Examples data(solder) fit
Page 27 and 28: part.anova 27 plot(z.auto); text(z.
Page 29 and 30: part.control 29 See Also rpart rpar
Page 31: part.exp 31 Value Returns a list co
Page 35 and 36: part.pca 35 Arguments tree pts plt.
Page 37 and 38: pconvert 37 rpconvert Update an rpa
Page 39 and 40: snip.rpart 39 Note Common transform
Page 41 and 42: spider 41 Format This data frame co
Page 43 and 44: summary.rpart 43 summary.rpart Summ
Page 45 and 46: trclcomp 45 Side Effects See Also t
Page 47 and 48: xpred.rpart 47 dinf, eps, replace.n
Page 49 and 50: Index ∗Topic datasets car.test.fr

The mvpart Package - NexTag Supports Open Source Initiatives

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?