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I2 Analyst's Notebook 7 User Guide - ISS Africa -Investigation ...

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Entity semantic types<br />

Appendix B: The i2 Semantic Approach<br />

Entity semantic types can be assigned to entity types in a data source, in a<br />

database schema, on a chart, or to individual entities on a chart. They can be used<br />

to give a common meaning to entities.<br />

For example, the Person semantic type can be assigned to entity types such as<br />

Male, Judge, Witness and Felon. The semantic type assignment provides an extra<br />

layer of meaning to the data. It allows the application to understand that the Male,<br />

Judge, Witness and Felon entity types share real-world characteristics, and that<br />

they are distinct from entity types which depict offices and houses.<br />

The following diagram shows some semantic types and the entity types to which<br />

you would typically assign them.<br />

Property<br />

Briefcase Clothing<br />

Camera Jewelry<br />

Link semantic types<br />

Person<br />

Male Judge<br />

Witness Felon<br />

Mailing Address<br />

Office House<br />

Restaurant Shop<br />

Link semantic types can be assigned to link types, to individual links on a chart, or<br />

to link types in a data source or database schema, to provide those links with a<br />

common meaning. For example, you can assign the Meeting Between link<br />

semantic type to a link on a chart that is named ‘weekly meeting’.<br />

i2 Analyst’s <strong>Notebook</strong> 7 <strong>User</strong> <strong>Guide</strong>: Customizing & Analyzing 351

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