[R] Classification Analysis

Rishabh Gupta rg117 at ohm.york.ac.uk
Wed Apr 17 15:22:08 CEST 2002

Thanks For your reply
I would really prefer to use R as I am using R for all the other exploratory
analysis that I am doing on the data

One question - i make electronic music with ComputerSoftware,too
and i'm statistican - what are the 750 variables and what is your
classification criterium ? (if it is not a secret !)

I have a large of variables (750) because I have a lot of version of each
kind of data. I analyse melody, rhythm, harmony, etc as a different stream
of data. For each one, I calculate a different versions, intervals, contour,
modulo, modulo of interval, etc. For each one of those I perform a different
kind of analysis, basic statistics, complexity measurements, etc. For each
kind of analysis there are five results each. E.g. for statistical, there is
mean, SD, MAD, COV, etc.
After performing all these different conversions/analysis I end up with
about 750 variables (6 * 5 * 5 * 5)
The classification groups are different depending on what set of MIDI files
I am analysing. In some sets the criteria is genre, subject (who played the
piece), composer, extract (which piece of music), etc.

Am 16.04.2002 17:13:39, schrieb "Rishabh Gupta" <rg117 at ohm.york.ac.uk>:
>Hi everyone,
>    Could somebody explain to me what is the package/function for
>classification analysis. I am performing analysis of music files in the
>of MIDI files. I end up with about 750 dependent variables from the
>analysis, I also have a number of independent/grouping variables that I set
>manually. What I would like is to be able to predict which group a
>particular MIDI files belongs to given the 750 dependent variables. In
>to this I have to perform classification analysis on a sample set of MIDI
>files where I know what group they belong to. I want to extract the
>'classification rule' that would enable me to predict the group of each
>file (there would be a different classification rule for each grouping
>variable). Can anybody explain what is the best way of doing this in R.
>is the best package/function that would enable me to perform classification
>Any help would be greatly appreciated.
>Many Thanks For Your Help!
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