have a 70000x785 dataset (70000 instances and 785 features) consisting of 10 different types of classes. I need to find a selection algorithm for finding the optimal training set size N as detailed in the question below. What is an example of a selection algorithm that can do this?

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System Model Approaches

The systems model approach is a process-oriented representation that emphasizes the impact or flow of information between modules. The multidisciplinary study of the use of models to design and create systems in business and IT development is known as systems model approach. It models how processes interact and what these processes do, but it does not go into detail about how these processes are implemented. Functional decomposition may be utilized to enhance the models employed in this technique, and they can be coupled to requirements models for additional system partitioning.