Re: [R] Data transformation cleaning

2011-09-28 Thread Weidong Gu
Seems your questions belong to rule mining for frequent item sets. check arules package Weidong Gu On Tue, Sep 27, 2011 at 11:13 PM, pip56789 pd...@virginia.edu wrote: Hi, I have a few methodological and implementation questions for ya'll. Thank you in advance for your help. I have a dataset

Re: [R] Data transformation cleaning

2011-09-28 Thread Jim Lemon
On 09/28/2011 01:13 PM, pip56789 wrote: Hi, I have a few methodological and implementation questions for ya'll. Thank you in advance for your help. I have a dataset that reflects people's preference choices. I want to see if there's any kind of clustering effect among certain preference choices

[R] Data transformation cleaning

2011-09-27 Thread pip56789
Hi, I have a few methodological and implementation questions for ya'll. Thank you in advance for your help. I have a dataset that reflects people's preference choices. I want to see if there's any kind of clustering effect among certain preference choices (e.g. do people who pick choice A also

Re: [R] Data transformation cleaning

2011-09-27 Thread Daniel Malter
On a methodological level, if the choices do not correspond on a cardinal or at least ordinal scale, you don't want to use correlations. Instead you should probably use Cramer's V, in particular if the choices are multinomial. Whether the wide format is necessary will depend on the format the