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Table 2 The properties and their class labels

From: Supervised classification with interdependent variables to support targeted energy efficiency measures in the residential sector

Household property

Classes and their labels

Number of appliances and entertainment devices (N_devices)

Low (<8)

Medium (8–11)

High (>11)

Number of bedrooms (N_bedrooms)

Very low (1–2)

Low (3)

High (4)

Very high (>4)

Type of cooking facility (cooking)

Electrical

Not electrical

Employment of chief income earner (employment)

Employed

Not employed

Family (family)

Family

No family

Floor area (floor_area)

Small (<100 m2)

Medium (100–200 m2)

Big (>200 m2)

Children (children)

Children

No children

Age of building (age_house)

Old (>30 years)

New (<30 years)

Number of residents (N_residents)

Few (<3)

Many (> 2)

Single (single)

Single

Not single

Retirement status of chief income earner (retirement)

Retired

Not retired

Social class of chief income earner according to NRS social grades (social_class)

A or B

C1 or C2

D or E