Confidence Algorithm for International Addresses

Confidence Algorithm for International Addresses - 23.1

Spectrum Addressing Guide

Version

23.1

Language

English

Product name

Spectrum Technology Platform

Title

Spectrum Addressing Guide

2024

First publish date

2007

Last updated

2024-08-03

Published on

2024-08-03T03:54:19.080501

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 Changed^¹	Factor If Filled^²	Factor if Postal Data Unavailable
Country	11.1111111111111	100%	0%	0%
City	11.1111111111111	50%	75%^³	0%
StateProvince	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 Changed^⁴	Factor If Filled^⁵	Factor if Postal Data Unavailable
Country	13.3333333333333	100%	0%	0%
City	13.3333333333333	50%	75%^⁶	0%
StateProvince	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.