Noise Generator (NoiseGenerator)

The Noise Generator masks values in numeric columns. It adds or multiplies the original value by random noise.

Link object structure

The Noise Generator does not support linking. It can be either self-consistent or consistent with another column. You cannot configure differential privacy.

The metadata object is populated from the NoiseMetadata object. The generator configuration includes:

• Whether to use additive or multiplicative noise.

• For additive noise, the percentage of the underlying value to scale the noise to.

• For multiplicative noise, the minimum and maximum value for the scaling factor.

{
  "schema": "string",
  "table": "string",
  "column": "string",
  "path": "string",  //JSON fields only
  "dataType": "string",  //MongoDB, Amazon DynamoDB, and JSON fields only
  "metadata": {
    "presetId": "string",
    "generatorId": "NoiseGenerator",
    "noiseStrategy": "enum",
    "min": numeric,  //For multiplicative
    "max": numeric,  //For multiplicative
    "ratio": numeric  //For additive
    "decimalPlaces": numeric //Number of decimal places
    "isConsistent": boolean,
    "consistencyColumn": "string",
    "encryptionProcessor": "x-on", //To use configured Structural data encryption
    "customValueProcessor": "string"  //If custom value processor applied
  }
}

Example replacement

In this example replacement for the Noise Generator, the additive noise strategy is used.

It scales the noise to 10% of the underlying value. It rounds the noise to 2 decimal places.

The generator is consistent with the name column.

{
  "name": "age",
  "schema": "public",
  "table": "users",
  "links": [
    {
      "schema": "public",
      "table": "users",
      "column": "age",
      "metadata": {
        "presetId": "NoiseGenerator",
        "generatorId": "NoiseGenerator",
        "noiseStrategy": "Additive",
        "ratio": 0.1,
        "decimalPlaces": 2,
        "isConsistent": true,
        "consistencyColumn": "name"
      }
    }
  ]
}