Table 2 List of ontologies proposed by Islam [13] and Islam and Bouwman [30]

Internet Ontology^a

The knowledge of World Wide Web, web browsing and its concepts and conventions

Real World Ontology

The knowledge of the real world experiences and concepts

System Ontology

The knowledge of the (studied) system, its functionalities and concepts

Computer Ontology

The knowledge of computers and computer uses

Mobile Ontology

The knowledge of mobile and mobile application uses

Current Web Domain Ontology^a

The knowledge concerning of web interface signs, which are specific enough to the current web domain (e.g., educational web domain)

Other Web Domain Ontology

The knowledge of web interface signs, which are specific enough to a particular web domain other than the web domain where the sign is currently available

Common-Sense Ontology^a

The knowledge of concepts belonging to a common background of users and that uses common sense

Topic Ontology^a

The knowledge of a particular subject or topic the website talks about

Organization Ontology^a

The knowledge of web interface signs that refer to the institution or organization that owns a website or an application

Cultural Ontology

The knowledge of interface signs which are specific to a particular cultural context

Website Ontology^a

The knowledge of web interface signs which are specific to a particular website