Description

Sample with given ratio with or without replacement.

Parameters

Name Description Type Required？ Default Value
ratio sampling ratio, it should be in range of [0, 1] Double ✓
withReplacement Indicates whether to enable sampling with replacement, default is without replcement Boolean false

Script Example

Script

  1. data = data = np.array([
  2.        ["0,0,0"],
  3.        ["0.1,0.1,0.1"],
  4.        ["0.2,0.2,0.2"],
  5.        ["9,9,9"],
  6.        ["9.1,9.1,9.1"],
  7.        ["9.2,9.2,9.2"]
  8. ])
  10. df = pd.DataFrame({"Y": data[:, 0]})
  12. # batch source 
  13. inOp = dataframeToOperator(df, schemaStr='Y string', op_type='batch')
  15. sampleOp = SampleBatchOp()\
  16.         .setRatio(0.3)\
  17.         .setWithReplacement(False)
  19. inOp.link(sampleOp).print()

Result

Y
0,0,0
0.2,0.2,0.2