toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (averageRank != null) 'averageRank': averageRank!,
if (meanAveragePrecision != null)
'meanAveragePrecision': meanAveragePrecision!,
if (meanSquaredError != null) 'meanSquaredError': meanSquaredError!,
if (normalizedDiscountedCumulativeGain != null)
'normalizedDiscountedCumulativeGain':
normalizedDiscountedCumulativeGain!,
};