public static Builder newBuilder(
        com.google.cloud.vertexai.api.FeatureNoiseSigma.NoiseSigmaForFeature prototype) {
      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
    }
<pre>
This represents the standard deviation of the Gaussian kernel that will
be used to add noise to the feature prior to computing gradients. Similar
to [noise_sigma][google.cloud.aiplatform.v1.SmoothGradConfig.noise_sigma]
but represents the noise added to the current feature. Defaults to 0.1.
</pre>

<code>float sigma = 2;</code>

@return The sigma.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/FeatureNoiseSigma.java