Geometric Brownian Motion

stochastic-process · 37 views
stochastic-processstochastic

What It Is

Geometric Brownian motion --- multiplicative random walk (dS/S = μdt + σdW), the basis of Black-Scholes option pricing. Log-normal distribution with positive skew

Interpretation

Standard analysis sees: left-skewed; smooth / autocorrelated; long-range memory (persistent); volatility-clustering (bursty); low-dimensional. The atlas additionally detects Nonstationarity:adf_pvalue.

What standard analysis sees
tail heaviness0.17
asymmetry0.14
occupancy0.77
short-range corr0.96
long-range memory0.93
spectral colour0.26
periodicity0.79
complexity0.69
time-irreversibility0.33
volatility clustering0.95
multifractality0.45
dimensionality0.10
nonstationarity0.83
What the atlas adds
Nonstationarity:adf_pvalue+3.3z
unit-root nonstationarity (ADF cannot reject random-walk null)

Composition

dtypefloat64
range[-3.241, 8.882]
unique values16384 / 16384
mean ± std2.77 ± 3.22

Render Gallery

Atlas Position

Nearest neighborDistance
Brownian Walk2.29
Perlin Noise2.73
fBm (Persistent)2.98

Open in Atlas →

Which Geometries Light Up

Catch24 › Catch24:CO_FirstMin_acrank 5/3066096.6000
Catch24 › Catch24:SB_BinaryStats_mean_longstretch1rank 5/3065348.1000
Dodecagonal (Stampfli) › Dodecagonal (Stampfli):pisot_triplet_coherencerank 4/3060.5245
in geophysical
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