Modelkit.Sample_weightFinite, non-negative sample weights aligned to samples.
At least one weight must be strictly positive.
val create : expected_length:int -> Vector.t -> (t, Data_error.t) resultval of_array : expected_length:int -> float array -> (t, Data_error.t) resultval length : t -> intval get : t -> int -> floatval select : t -> Row_view.t -> (t, Data_error.t) result