1 files changed, 38 insertions, 0 deletions
diff --git a/code/sunlab/common/distribution/x_gaussian_distribution.py b/code/sunlab/common/distribution/x_gaussian_distribution.py
new file mode 100644
index 0000000..b4330aa
--- /dev/null
+++ b/code/sunlab/common/distribution/x_gaussian_distribution.py
@@ -0,0 +1,38 @@
+from .adversarial_distribution import *
+
+
+class XGaussianDistribution(AdversarialDistribution):
+    """# X Gaussian Distribution"""
+
+    def __init__(self, N):
+        """# X Gaussian Distribution Initialization
+
+        Initializes the name and dimensions"""
+        super().__init__(N)
+        assert self.dims == 2, "This Distribution only Supports 2-Dimensions"
+        self.full_name = "2-Dimensional X-Gaussian Distribution"
+        self.name = "XG"
+
+    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]
+        sample_base = np.zeros((4 * N, 2))
+        sample_base[0 * N : (0 + 1) * N, :] = np.random.multivariate_normal(
+            mean=[1, 1], cov=[[1, 0.7], [0.7, 1]], size=[N]
+        )
+        sample_base[1 * N : (1 + 1) * N, :] = np.random.multivariate_normal(
+            mean=[-1, -1], cov=[[1, 0.7], [0.7, 1]], size=[N]
+        )
+        sample_base[2 * N : (2 + 1) * N, :] = np.random.multivariate_normal(
+            mean=[-1, 1], cov=[[1, -0.7], [-0.7, 1]], size=[N]
+        )
+        sample_base[3 * N : (3 + 1) * N, :] = np.random.multivariate_normal(
+            mean=[1, -1], cov=[[1, -0.7], [-0.7, 1]], size=[N]
+        )
+        np.random.shuffle(sample_base)
+        return sample_base[:N, :]