How are Geometry nodes generated?
The concept of GeoCode is great!
Is the Geometry nodes in the chair blender file generated by algorithm training or manually edited?
If there is a more convenient way to make secondary adjustments to the generated blender file, the generated Geometry nodes are a bit messy now.
Thank you.

The programs are complex as they maintain valid shapes for over 50 parameters. I understand the difficulty in reading and changing the programs, which is why some work is being done to improve exactly what you see here. Regrettably, I cannot provide a time estimation at this point. Please keep an eye out for any updates in this repo.
Are the Geometry nodes in the chair blender file generated by training the model or manually done?
As stated in the paper, the programs are manually crafted. All other aspects of the network, including the sample generation, PCs, sketches, and of course the network structure, are done automatically, or using the recipe.json file based on the shape domain.
Understood. This may be a silly doubt. The output of the training is a model. What is the pipeline between this trained model and the program? What is given as input to the program?