data

type Dataset struct {
	Eras []EraData
}

type EraData struct {
	Era      int
	Stocks   []StockData
	EraStats []float64 // e.g. precomputed aggregate stats for the era (mean, var, etc.)
}

type NumeraiRow struct {
	Era      int32     `parquet:"era"`
	ID       string    `parquet:"id"`
	Features []float32 `parquet:"features,list"`
	Target   float32   `parquet:"target"`
}

type StockData struct {
	ID       string
	Features []float64
	Target   float64 // Target value (if known; training data has it, tournament data will not)
}