diamond¶
- hyppo.tools.diamond(n, p, noise=False, low=- 1, high=1)¶
Diamond simulation.
Diamond \((X, Y) \in \mathbb{R}^p \times \mathbb{R}^p\): \(U \sim \mathcal{U}(-1, 1)\), \(V \sim \mathcal{N}(0, 1)^p\), \(\theta = -\frac{\pi}{4}\),
\[\begin{split}X_{|d|} &= U \cos(\theta) + V \sin(\theta) + 0.05 p \epsilon_{|d|}\ \mathrm{for}\ d = 1, ..., p \\ Y_{|d|} &= -U \sin(\theta) + V \cos(\theta)\end{split}\]- Parameters
n (
int
) -- The number of samples desired by the simulation (>= 5).p (
int
) -- The number of dimensions desired by the simulation (>= 1).noise (
bool
, default:False
) -- Whether or not to include noise in the simulation.low (
float
, default:-1
) -- The lower limit of the uniform distribution simulated from.high (
float
, default:1
) -- The upper limit of the uniform distribution simulated from.
- Returns
x,y (
ndarray
offloat
) -- Simulated data matrices.x` and ``y
have shapes(n, p)
and(n, p)
where n is the number of samples and p is the number of dimensions.