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![Dummy variables in linear regression]()
www.google.com.twWe start by considering a simple linear regression with a single variable that is di - ... One can have R automatically do dummy variable coding, using a “factor” ...瀏覽：563 -
![Dummy Variables or Indicator Variables in R (R Tutorial 5.4 ...]()
www.google.com.tw2014年3月4日 - 7 分鐘 - 上傳者：MarinStatsLectures Learn what dummy or indicator variables are and how they are used to include categorical or ...瀏覽：1092
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日期：2025-06-09
Chapter 7: Dummy variable regression. Why include a qualitative independent
variable?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 ... R commands ....
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日期：2025-06-14
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 ......
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日期：2025-06-11
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 ......
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日期：2025-06-08
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....
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日期：2025-06-08
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)....
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日期：2025-06-08
You can simply do: housetype$quality...
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日期：2025-06-14
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 ......
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日期：2025-06-10
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 ......
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