1. Feature Engineering Studio
February 4, 2015

2. How to compute in Excel
If numerical, what are its max, min, average, stdev?
If categorical, what is the distribution of each value?
Using Class2Data

3. How to do a histogram in Excel
Using Class2Data

4. Shell commands Step 1: Install Cygwin
Step 2: Within Cygwin, go to the directory where your data is

5. Useful things you can do
man

6. Useful things you can do
Split
Look at man split

7. Useful things you can do
Cat
Look at man cat

8. Useful things you can do
>
Redirect; use with cat or other programs

9. Useful things you can do
Grep
Look at man grep

10. Useful things you can do
Sed
Look at man sed
Powerful but dangerous

11. Shell scripting Writing programs made up of shell commands
I don’t actually do this personally very often, I just use shell commands

12. Questions? Comments? Things you want to do?

13. Next Class 2/16 Data Cleaning (Asgn.2 due) Do the assignment
Read the readings

14. Note
2/9 No class
2/11 No class

15. Questions? Comments? Concerns?