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Roger Clarke's 'The (Id)E Model in Overview'

A Pragmatic Model of (Id)Entitification and Authentication
Series Overview

Revision of 2 January 2022

Roger Clarke **

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This document is at http://rogerclarke.com/ID/IDM-O.html


Series Overview

This is the index-page for a series of papers. The series presents a model of entities and identities to support the design of effective information systems. The motivation is to reflect the relevant part of the real world in a manner that is economic but sufficiently comprehensive and realistic that misunderstandings common during the last few decades are overcome or avoided.

Each paper is designed to be read standalone, but each is likely to be more fully appreciated if the series is read in sequence.

Links to, and brief explanations of the papers are provided here:

  1. A Pragmatic Metatheoretic Model for Information Systems Practice and Research
    This reviews relevant findings in philosophy, in order to establish firm conceptual foundations, and declares a working set of assumptions in each of the areas of ontology, epistemology and axiology
  2. A Pragmatic Model of (Id)entification
    This is the centrepiece of the series. It presents the model, which encompasses entities, identities, nyms, and their representation in data models
  3. Extension of the Pragmatic Model of (Id)entification to Authentication
    This addresses the question of how assertions are assessed, in relation not only to entities and identities, but also value, attributes and authority
  4. Extension of the Pragmatic Model of (Id)entification to Authorisation
    This applies and extends the model to access control and the management of the privileges made available to users of electronic services
  5. Application of the Pragmatic Model of (Id)entification to Data Quality
    This applies the model to deliver insights into the many quality dimensions of data relating to entities and identities
  6. The Authentication of Assertions of Fact
    This examines a further category of assertions, in light of the model, in order to provide an analytical framework for consideration of such phenomena as misinformation, disinformation, 'false news' and 'alternative facts'

The series is supported by:


Author Affiliations

Roger Clarke is Principal of Xamax Consultancy Pty Ltd, Canberra. He is also a Visiting Professor associated with the Allens Hub for Technology, Law and Innovation in UNSW Law, and a Visiting Professor in the Research School of Computer Science at the Australian National University.



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From the site's beginnings in August 1994 until February 2009, the infrastructure was provided by the Australian National University. During that time, the site accumulated close to 30 million hits. It passed 65 million in early 2021.

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Created: 3 April 2021 - Last Amended: 22 January 2022 by Roger Clarke - Site Last Verified: 15 February 2009
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