Shifu How To

0. How to install Shifu?

a). Go to http://shifu.ml/project/download/ and find the latest release version to download
b). Unzip the the package 
         $ tar -xvf shifu-<your-version>-<postfix>.tar.gz
c). Set the environment
         $ cd shifu-<your-version>
         $ export SHIFU_HOME=$(pwd)
         $ export PATH=${SHIFU_HOME}/bin:${PATH}

1. Commands to run Shifu.
2. File location and Shifu runmode.
3. How to specify HDFS home directory for Shifu?
4. How to specify variable type, Numerical or Categorical?

1. Data Filter expression in Shifu

Data filter expression follows standard:
http://commons.apache.org/proper/commons-jexl/reference/syntax.html