An engineer is training two different models, Model A and Model B, on the exact same dataset to perform a specific task. The training process aims to find model parameters that minimize a cost function, where a lower value indicates a smaller error between the model's outputs and the desired outputs. After one training iteration, the engineer observes the following:

• Cost for Model A: 2.5
• Cost for Model B: 5.0

Based solely on this information, what is the most logical interpretation of the models' current performance?

Calculating Model Error

An engineer is training a predictive model and plots the value of the cost function at the end of each training iteration. The resulting graph shows a curve that starts at a high value and consistently decreases over many iterations, eventually flattening out at a very low, near-zero value. What does this trend most likely indicate about the training process?