what is training score used for what is the training score useful for? what is training score? what's training score used for what is training score used for what is training score used for which model requires a higher score for training why training score is used is a training score useful what is the training score used for in machine learning why do you need a training score why use a training score what is a training score used for what is a training score used for what is training score used for what does the training score tell you why is training score useful in machine learning what is training score used for and what is it used for what is training score used for what is the training score?