SameTestProperties

SameTestProperties

is an option for set operations on entity classes whose setting gives the properties that are used to decide whether two given entities are the same.

Details

  • The default setting of SameTestProperties is Automatic. This means that equality between entities is defined as equality between Entity expressions as returned by EntityList with a single argument.
  • SameTestProperties{{prop11,prop12,…},{prop21,prop22,…},…} means that propiα in classi has to be equal to all propjα in classj.
  • In UnionedEntityClass[…,SameTestPropertiesFalse], no two entities are ever considered the same. The classes are effectively joined to one another.

Examples

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Basic Examples  (4)

The default setting of Automatic compares Entity expressions:

With the default setting, different entity types are always considered to be different:

A movie and a book can be considered the same if they have the same "Name" property:

In UnionedEntityClass, you can set SameTestProperties to False to keep duplicate entries:

Scope  (1)

SameTestProperties is supported on SQL-backed entity stores:

Properties & Relations  (1)

SameTestProperties could be simulated less efficiently using SameTest:

However, the resulting entities will have the type of the first class, and because of that, only the properties of the first type:

Wolfram Research (2020), SameTestProperties, Wolfram Language function, https://reference.wolfram.com/language/ref/SameTestProperties.html.

Text

Wolfram Research (2020), SameTestProperties, Wolfram Language function, https://reference.wolfram.com/language/ref/SameTestProperties.html.

CMS

Wolfram Language. 2020. "SameTestProperties." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/SameTestProperties.html.

APA

Wolfram Language. (2020). SameTestProperties. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/SameTestProperties.html

BibTeX

@misc{reference.wolfram_2024_sametestproperties, author="Wolfram Research", title="{SameTestProperties}", year="2020", howpublished="\url{https://reference.wolfram.com/language/ref/SameTestProperties.html}", note=[Accessed: 21-December-2024 ]}

BibLaTeX

@online{reference.wolfram_2024_sametestproperties, organization={Wolfram Research}, title={SameTestProperties}, year={2020}, url={https://reference.wolfram.com/language/ref/SameTestProperties.html}, note=[Accessed: 21-December-2024 ]}