search:dummy variable in r相關網頁資料

    瀏覽:1045
    日期:2024-05-08
    Chapter 7: Dummy variable regression. Why include a qualitative independent variable?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 ... R commands ....
    瀏覽:1338
    日期:2024-05-07
    Version info: Code for this page was tested in R version 3.0.2 (2013-09-25) ... In the case of the variable race which has four levels, a typical dummy coding ......
    瀏覽:1408
    日期:2024-05-05
    2 Jan 2014 ... Algorithms such as randomForest in R often have limits on how many ... and elsewhere, here's the answer: code your own dummy variables ......
    瀏覽:1079
    日期:2024-05-11
    14 Jun 2012 ... Contains functions to create dummy variables flexibly using ... http://wiki.r-project. org/rwiki/doku.php?id=tips:data-manip:create_indicator....
    瀏覽:1453
    日期:2024-05-09
    Another option that can work better if you have many variables is factor and model.matrix . > year.f = factor(year) > dummies = model.matrix(~year.f)....
    瀏覽:626
    日期:2024-05-11
    You can simply do: housetype$quality...
    瀏覽:553
    日期:2024-05-04
    2 Jan 2014 ... On Quora, a question was asked about how to fix the error of the randomForest package in R not being able to handle more than 32 levels in a ......
    瀏覽:329
    日期:2024-05-07
    16 Apr 2014 ... Follow-up question (possibly answered by the above): besides just the efficiency of letting R create dummy variables, is there any problem with ......