1. Flowchart symbols

2.  Algorithms
1. HMM
2. SVM-HMM
3. INK ANALYSIS LIBRARY

3.  The experiment prove that
Symbol SVM-HMM Traditional HMM SVM-
hybrid approach approach HMM
more
Operation 97.21 96.40 accuracy
Decision 96.30 95.27 than
I/O 96.31 94.89 HMM
Connector 92.15 90.31
termination 93.28 91.44
But HMM-SVM have problem
Why ?
Each symbol must draw with single
stroke