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authorChristian C <cc@localhost>2024-11-11 12:29:32 -0800
committerChristian C <cc@localhost>2024-11-11 12:29:32 -0800
commitb85ee9d64a536937912544c7bbd5b98b635b7e8d (patch)
treecef7bc17d7b29f40fc6b1867d0ce0a742d5583d0 /code/sunlab/common/distribution/swiss_roll_distribution.py
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diff --git a/code/sunlab/common/distribution/swiss_roll_distribution.py b/code/sunlab/common/distribution/swiss_roll_distribution.py
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+++ b/code/sunlab/common/distribution/swiss_roll_distribution.py
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+from .adversarial_distribution import *
+
+
+class SwissRollDistribution(AdversarialDistribution):
+ """# Swiss Roll Distribution"""
+
+ def __init__(self, N, scaling_factor=0.25, noise_level=0.15):
+ """# Swiss Roll Distribution Initialization
+
+ Initializes the name and dimensions"""
+ super().__init__(N)
+ assert (self.dims == 2) or (
+ self.dims == 3
+ ), "This Distribution only Supports 2,3-Dimensions"
+ self.full_name = f"{self.dims}-Dimensional Swiss Roll Distribution Distribution"
+ self.name = f"SR{self.dims}"
+ self.noise_level = noise_level
+ self.scale = scaling_factor
+
+ def __call__(self, *args):
+ """# Magic method when calling the distribution
+
+ This method is going to be called when you use xgauss(case_count)"""
+ import numpy as np
+
+ assert len(args) == 1, "Only 1 argument supported"
+ N = args[0]
+ noise = self.noise_level
+ scaling_factor = self.scale
+
+ t = 3 * np.pi / 2 * (1 + 2 * np.random.rand(1, N))
+ h = 21 * np.random.rand(1, N)
+ RANDOM = np.random.randn(3, N) * noise
+ data = (
+ np.concatenate(
+ (scaling_factor * t * np.cos(t), h, scaling_factor * t * np.sin(t))
+ )
+ + RANDOM
+ )
+ if self.dims == 2:
+ return data.T[:, [0, 2]]
+ return data.T[:, [0, 2, 1]]