Confidence Algorithm for International Addresses

There are two confidence algorithms for addresses outside the U.S. and Canada, one for addresses in countries that use postal codes and one for addresses in countries that do not use postal codes.

The following table details the confidence algorithm for non-U.S. and non-Canadian addresses from countries that use postal codes.

Table 1. Confidence Algorithm for Countries With Postal Codes

Field

Weight/Match Score

Factor if Changed1

Factor If Filled2

Factor if Postal Data Unavailable

Country

11.1111111111111

100%

0%

0%

City

11.1111111111111

50%

75%3

0%

State

16.6666666666667

100%

100

80%

PostalCode

16.6666666666667

100%

100%

80%

StreetName

16.6666666666667

50%

75%

50%

HouseNumber

16.6666666666667

50%

75%

50%

Directionals

0

50%

75%

0%

StreetSuffix

5.55555555555556

50%

75%

50%

ApartmentNumber

5.55555555555556

50%

75%

50%

The following table details confidence algorithm for countries that do not use postal codes.

Table 2. Confidence Algorithm for Countries Without Postal Codes

Field

Weight/Match Score

Factor if Changed4

Factor If Filled5

Factor if Postal Data Unavailable

Country

13.3333333333333

100%

0%

0%

City

13.3333333333333

50%

75%6

0%

State

20

100%

100

80%

StreetName

20

50%

75%

50%

HouseNumber

20

50%

75%

50%

Directionals

0

50%

75%

0%

StreetSuffix

6.66666666666667

50%

75%

50%

ApartmentNumber

6.66666666666667

50%

75%

50%

The following table lists countries without postal codes.

Table 3. Countries Without Postal Codes

Afghanistan

Albania

Angola

Anguilla

Bahamas

Barbados

Belize

Benin

Bhutan

Botswana

Burkina Faso

Burundi

Cameroon

Cayman Islands

Central African Rep.

Chad

Cocos Islands

Colombia

Comoros

Congo (Dem. Rep.)

Congo (Rep.)

Cote d'Ivoire

Korea (North)

Djibouti

Dominica

Equatorial Guinea

Eritrea

Fiji

Gabon

Gambia

Ghana

Grenada

Guyana

Ireland

Jamaica

Kiribati

Libya

Malawi

Mali

Mauritania

Namibia

Nauru

Palau

Panama

Peru

Qatar

Rwanda

Saint Lucia

Saint Vincent and the Grenadines

Samoa

Sao Tome and Principe

Seychelles

Sierra Leone

Suriname

Tanzania

Timor

Togo

Tonga

Trinidad & Tobago

Tuvalu

Uganda

United Arab Emirates

Vanuatu

Yemen

Zimbabwe

1 Refers to instances when the input data in this field is changed in order to achieve a match.
2 Refers to instances when the input data in this field is not present but is filled in order to achieve a match.
3 If the country is a Category C country, this value is 50%. Countries fall into one of these categories:
  • Category A—Enables the validation and correction of an address's postal code, city name, state/county name, street address elements, and country name.
  • Category B—Enables the validation and correction of an address's postal code, city name, state/county name, and country name. It does not support the validation or correction of street address elements.
  • Category C—Enables the validation and correction of the country name, and the validation of the format of the postal code.
4 Refers to instances when the input data in this field is changed in order to achieve a match.
5 Refers to instances when the input data in this field is not present but is filled in order to achieve a match.
6 If the country is a Category C country, this value is 50%. Countries fall into one of these categories:
  • Category A—Enables the validation and correction of an address's postal code, city name, state/county name, street address elements, and country name.
  • Category B—Enables the validation and correction of an address's postal code, city name, state/county name, and country name. It does not support the validation or correction of street address elements.
  • Category C—Enables the validation and correction of the country name, and the validation of the format of the postal code.