Define the evaluation task
Choose the target modality and concrete criteria (e.g. image fidelity vs diversity) and select reference data and acceptance thresholds.
Evaluate generative outputs. Quantify quality and diversity.
Evaluation for generative models compares generated samples to reference data along quality, diversity and fidelity axes. Useful metrics include FID, precision/recall for distributions, diversity scores and human preference tests; each metric captures different failure modes such as mode collapse, low fidelity or unrealistic artefacts.
Learning concept · Not a validated service
Evaluation for generative models compares generated samples to reference data along quality, diversity and fidelity axes. Useful metrics include FID, precision/recall for distributions, diversity scores and human preference tests; each metric captures different failure modes such as mode collapse, low fidelity or unrealistic artefacts.
A proposed extension: monitor a generative-image model in development so product teams can track fidelity and diversity regressions. For safety, human reviewers should oversee any deployment decisions based on these metrics; the supplied starter does not implement monitoring or human evaluation.
Choose the target modality and concrete criteria (e.g. image fidelity vs diversity) and select reference data and acceptance thresholds.
Produce synthetic samples from a model or sampler and store seed references, ensuring reproducibility with fixed RNG seeds.
Implement metrics such as FID, precision/recall for distributions and diversity scores, and log them per dataset slice.
Manually review low-scoring samples, check for mode collapse or artefacts, and use human preference tests where automatic metrics disagree.
The supplied starter creates five synthetic 3‑dimensional samples by computing the centroid and covariance of five small seed vectors, drawing multivariate-normal samples with NumPy, clipping them to [0,1], and printing the results. It does not compute any evaluation metrics or compare generated samples to a held-out reference dataset.
centroid = seed_examples.mean(axis=0)
covariance = np.cov(seed_examples.T) + np.eye(seed_examples.shape[1]) * 0.01
synthetic_samples = rng.multivariate_normal(centroid, covariance, size=5)
synthetic_samples = np.clip(synthetic_samples, 0, 1)The starter only synthesises a tiny set of 3‑dimensional vectors from a multivariate normal around five seed examples and prints them. It does not implement or report evaluation metrics (FID, precision/recall, diversity), does not use real image or text data, and is too small to measure distributional properties meaningfully.
A proposed extension: build a dashboard that computes FID and precision/recall across dataset slices, shows sample pairs (reference vs generated) and records human preference votes to calibrate automatic metrics.
This is a potential application pathway, not a delivered product. The supplied starter does not implement this service or validate it with real users.
Networkers Home runs this topic inside its AI Engineer Course, with placement support and hands-on labs.