Witwatersrand in the context of "Johannesburg"

In statistics, originally in geostatistics, kriging or Kriging (/ˈkriːɡɪŋ/), also known as Gaussian process regression, is a method of interpolation based on Gaussian process governed by prior covariances. Under suitable assumptions of the prior, kriging gives the best linear unbiased prediction (BLUP) at unsampled locations. Interpolating methods based on other criteria such as smoothness (e.g., smoothing spline) may not yield the BLUP. The method is widely used in the domain of spatial analysis and computer experiments. The technique is also known as Wiener–Kolmogorov prediction, after Norbert Wiener and Andrey Kolmogorov.

The theoretical basis for the method was developed by the French mathematician Georges Matheron in 1960, based on the master's thesis of Danie G. Krige, the pioneering plotter of distance-weighted average gold grades at the Witwatersrand reef complex in South Africa. Krige sought to estimate the most likely distribution of gold based on samples from a few boreholes. The English verb is to krige, and the most common noun is kriging. The word is sometimes capitalized as Kriging in the literature.

Roodepoort (locally /ˈrʊərdəpʊərt/ ROOR-də-poort) is a city in the Gauteng province of South Africa. Formerly an independent municipality, Roodepoort became part of the Johannesburg municipality in the late 1990s, along with Randburg and Sandton. Johannesburg's most famous botanical garden, Witwatersrand National Botanical Gardens (now renamed Walter Sisulu National Botanical Garden), is located in Roodepoort.

Krugersdorp (Afrikaans for Kruger's Town) is a mining city in the West Rand, Gauteng Province, South Africa founded in 1887 by Marthinus Pretorius and Abner Cohen. Following the discovery of gold on the Witwatersrand, a need arose for a major town in the west of the reef. The government bought part of the Paardekraal farm and named the new town after the Transvaal president, Paul Kruger. Krugersdorp no longer has a separate municipal government after it was integrated into Mogale City Local Municipality along with surrounding towns. It is now the seat of government for Mogale City.

The University of the Witwatersrand, Johannesburg (/vətˈvɑːtəsrɑːnt/), commonly known as Wits University or Wits, is a leading multi-campus public research university situated in the economic hub of Johannesburg, South Africa. It is known for its academic and research excellence, commitment to social justice, and the advancement of the public good. Wits University has been recognised as the top-ranked university in sub-Saharan Africa for innovation performance in the 2025 Global Innovation Index.

The university has its roots in the mining industry, as do Johannesburg and the Witwatersrand in general. Founded in 1896 as the South African School of Mines in Kimberley, it is the third oldest South African university in continuous operation.