Loss measures the discrepancy between a model’s predictions and true values, with lower values indicating better fit—Option D is correct. Option A (accuracy difference) isn’t loss—it’s a derived metric. Option B (error percentage) is closer to error rate, not loss. Option C (accuracy improvement) is a training outcome, not loss’s definition. Loss is a fundamental training signal.
OCI 2025 Generative AI documentation likely defines loss under fine-tuning metrics.
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