from moderate-resolution land imagery, and for documenting and validating algorithms, including their modifications or replacements. In doing so, the program should

• Define criteria that government-provided authoritative data sets should meet, among them such attributes as calibration, accuracy assessment, and validation, and including ground truth;

• Define criteria for which products should be provided by the government and which by the private sector;

• Implement procedures for development, cost estimation, peer review, and the publication of algorithms that produce derived products; and

• Implement plans, procedures, and budgets for ongoing validation.

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