Migration Difficulty Scores

You can modify the maximum allowed score of each difficulty assessment metric in the /opt/DevKit/devkitplugins/porting/config/xc_model/difficulty_model.json file. /opt is the tool installation directory. Replace it with the actual directory.

**Table 1** Parameters in the **difficulty_model.json** file
Parameter	Description
xx_keyword	Name of the metric in this dimension.
default	Default value of the metric.
options	Value options of the metric.
score	Weight of an option. A smaller weight indicates a lower migration difficulty. Difficulty = (score / (∑score_{single-option max} + ∑score_{multiple options})) x 100. For example, if you set Maintenance status to In warranty in China + Software evolving, the default weight is 5 and the difficulty is 3.57 (5/140 x 100).

The difficulty formula is as follows:

Total difficulty = (∑score / (∑score_{single-option max} + ∑score_{multiple options})) x 100

∑score: Sum of the weight of each option.
∑score_{single-option max}: Sum of the maximum weight of each single option, including Maintenance status, Software type, OS, Dependency, Importance, Database data, System users, Service scope, and Application scenario.
∑score_{multiple options}: Sum of the weight of each multiple-selection option, including Programming language.

If the difficulty_model.json file is mis-deleted, the default model file in the /opt/DevKit/devkitplugins/porting/config/xc_model/xc_model_bak backup path is read. If you need to modify the default file, copy the default file to the xc_model directory:

cd /opt/DevKit/devkitplugins/porting/config/xc_model
cp xc_model_bak/difficulty_model_bak.json difficulty_model.json
chown -R devkit:devkit difficulty_model.json
chmod 644 difficulty_model.json

Parent topic: System Migration Project Management