The EIU's index is based on three categories: health and safety, culture and environment, and infrastructure.
A panel of judges determines the winner based on three categories: literary merit, performance, and "intangibles" (think the "artistic merit" category in Olympic figure skating).
The grades were based on three categories: how much research is devoted to neglected diseases or to aspects of diseases that affect poor countries, like AIDS in babies; how much effort is made to ensure discoveries become available to the poor; and how many global health courses are taught.
Within this definition, stocks are selected based on three categories: 1) Mature-established businesses like Intel, Microsoft and Compaq.
Educational attainment is measured by three dummy variables based on three categories according to the ISCED3 classification.
The model was tested to predict the spatial utilization of a lizard's thermal habitat in the terrarium based on three categories: high, moderate and low occupancy.
The underlying design tool guiding the development of the granular-based RBFNN is based on two categories of methods such as K-means clustering and the fuzzy C-means (FCM) clustering method.
The results of the road tests were then tabulated according to a twenty-one-variable, two-hundred-and-thirty-five-point rating system, based on four categories: vehicle (driver comfort, styling, fit and finish, etc).; power train (transmission, engine, and fuel economy); chassis (steering, brakes, ride, and handling); and "fun to drive".
The QS World University Rankings are based on four categories: research, teaching, employability and internationalisation.
Laban came up with a way of describing people's movements based on two categories — Space Harmony and Effort — which can be broken down into subcategories, like Weight, Space, Time, and Flow, and special terms: Float, Punch, Glide, Slash, Dab, Wring, Flick, and Press.
