esda.external_entropy¶
- esda.external_entropy(a, b, balance=0, base=2.718281828459045)[source]¶
The harmonic mean summarizing the overlay entropy of two sets of polygons: a onto b and b onto a.
Called the v-measure in []
- Parameters:
- a
geometryarrayofpolygons array of polygons
- b
geometryarrayofpolygons array of polygons
- balance: float
weight that describing the relative importance of pattern a or pattern b. When large and positive, we weight the measure more to ensure polygons in b are fully contained by polygons in a. When large and negative, we weight the pattern to ensure polygons in A are fully contained by polygons in b. Corresponds to the log of beta in {cite}`Nowosad2018`.
- base: float
base of logarithm to use throughout computation
- Returns
- ——–
- (n,) array expressing the entropy of the areal distributions
- of a’s splits by partition b.
- a