Here is a short presentation I made for fellow students at work.
It is generally at a beginner’s level or for people having trouble transitioning to R.
and if you want to see the video presentation you can see it from here on UTK’s lecture capture mechanism
Title: R Help Session
Speaker: A. Ohri
Desription: Session for R Beginners
URL: http://vcweb.bus.utk.edu/20090911-103113-cap403/
In addition, here is a link for the handout:
Here is a great video and slides on doing statistical network analysis using R. It is by Drew Conway from NYU.
Social Network Analysis in R from Drew Conway on Vimeo.
This is a great data mining tutorial from John Elder. Visit his site at http://datamininglab.com/
for more great video tutorials- all very lucid, easy to understand and powerful.
ROC Curve is a nice modeling concept to know as it will used practically in nearly all models
irrespective of spoefic technique and irrespective of statistical software.
We use the Wikipedia for referring to easy to implement statistics rather than crusty
thick books which seem prohibitely dense and opaque to outsiders
-This is how you define the ROC Curve.
| actual value | ||||
|---|---|---|---|---|
| p | n | total | ||
| prediction outcome |
p’ | True Positive |
False Positive |
P’ |
| n’ | False Negative |
True Negative |
N’ | |
| total | P | N | ||
true positive (TP)
Here is a good java enabled page to calculate the ROC Curve.
http://www.rad.jhmi.edu/jeng/javarad/roc/JROCFITi.html
And in case any one asks, ROC stands for Receiver Operating Characteristic. ……
Both Rattle and R Commander are very good GUI’s (graphical user interface) for R, and considerably easier for a beginner than the command line console ( but I am more partial to RCmdr for normal statistical analysis while Rattle seemed to have better Data Mining Interfaces and functionality).
Here is a snapshot for both of them.
Installing them both is a breeze as you set a CRAN Mirror from Normal R Console and install package from list of package names . R has hundreds of packages (All free!!) and you can thus install specific packages to your need and usage.The software R automatically downloads and installs them.
..
Installling both these GUI will ensure you cut down the time to learn commands as you can first click and try and learn the syntax that is auto generated side by side.
Both Rattle and R Commander are very good GUI’s (graphical user interface) for R, and considerably easier for a beginner than the command line console ( but I am more partial to RCmdr for normal statistical analysis while Rattle seemed to have better Data Mining Interfaces and functionality).
Here is a snapshot for both of them.
Installing them both is a breeze as you set a CRAN Mirror from Normal R Console and install package from list of package names . R has hundreds of packages (All free!!) and you can thus install specific packages to your need and usage.The software R automatically downloads and installs them.
..
Installling both these GUI will ensure you cut down the time to learn commands as you can first click and try and learn the syntax that is auto generated side by side.
DECISION STATS 