This is the 17828th most frequent Russian word.
упрощенной
Simplified.
The word "упрощенной" is used in instrumental case to describe the simplified state of the program used in training.
Мы используем упрощенной версию программы для обучения.
We use a simplified version of the program for training.
Here "упрощенной" modifies "форме", showing the quality of being simplified for better understanding.
Задача была представлена в упрощенной форме для понимания.
The task was presented in a simplified form for comprehension.
In this sentence, "упрощенной" describes the "модели" in genitive case, indicating the model's simplified nature that leads to accessibility.