chapter  9
8 Pages

Large Data

WithMartin Theus, Simon Urbanek

The notion of a “large” dataset is quite relative. For a medical study 1,000 patients can be quite large; a typical telecommunication application won’t call a problem “large” unless more than 1,000,000 cases are involved. In general, the transition from "normal" to "large" will usually take place, whenever classical tools and procedures no longer work properly. Large can mean a large number of observations, a large number of variables or both.