Next Previous Contents

7. Vector generation

7.1 Majorvector

After all the steps mentioned in the previous chapters there should now be a directory with a lot of *.fft files in it. To obtain a valid SOM Vectorfile you have to run now SJBmajorvector. SJBmajorvector can be obtained from here. There is also a undocumented program for special vector generation: SJBvector

7.2 positive values

The GHSOM does not understand negative values within the Vectorfile. Use SJBplus to get a clean positive Vectorfile. SJBplus can be obtained from here.

7.3 Normalizing

All vectors are normalized using 

somlib.som.preprocess.Vec2Vec
out of the SOMLib package. The best way to proceed is to run the following script: 

#!/bin/bash
# Normalization of Vectorfile
# $1 is Name of Vectorfile
SOMLIBDIR=/SOM/somlib

NAME=$1
INPUT=$NAME.vector
LOGFILE=./$NAME.map.log
VERBOSITY=2

ln -s $SOMLIBDIR somlib
mv $INPUT $INPUT.input

java -Xmx10000m somlib.som.preprocess.Vec2Vec -i $INPUT.input -o $INPUT -n t -v $VERBOSITY >>$LOGFILE  2>>$LOGFILE

rm $INPUT.input
rm somlib

Next Previous Contents