Resolving conflicts between role-hierarchy and concept-hierarchy in a Digital Library ontology

Dasgupta, Subhasis; Bagchi, Aditya

doi:10.1109/eait.2012.6408004

Cited by 2 publications

(4 citation statements)

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“…If the user groups are defined by roles, quite common in the access control domain, access control policies have to be designed considering interaction between two hierarchies: concept hierarchy in the ontology structure and the role hierarchy of the users. Authors have already made some studies on possible conflicts between the two hierarchies (Dasgupta and Bagchi, 2012b). Detail results of such studies will be communicated in future.…”

Section: Discussionmentioning

confidence: 99%

“…Different research efforts on ontology-based systems and secured access to ontology structure for DL have already been reported partially in (Adam et al, 2002;Ray and Chakraborty, 2006;Dasgupta and Bagchi, 2011, 2012a, 2012b. This section provides the comprehensive model for security policy specification that covers the authorization of different users for accessing different concepts.…”

Section: Access Control Policies and Operational Issuesmentioning

confidence: 99%

“…The research group involved in this paper has made some study on these problems in connection with controlled access to a DL (Dasgupta and Bagchi, 2011, 2012a, 2012b. The model proposed in this paper accepts the presence of multiple parents in the concept hierarchy of DL ontology.…”

Section: Introductionmentioning

confidence: 99%

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Resolving authorization conflicts by ontology views for controlled access to a digital library

Dasgupta

Pal

Mazumdar

et al. 2015

Journal of Knowledge Management

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Purpose – This paper provides a new Digital Library architecture that supports polyhierarchic ontology structure where a child concept representing an interdisciplinary subject area can have multiple parent concepts. The paper further proposes an access control mechanism for controlled access to different concepts by different users depending on the authorizations available to each such user. The proposed model thus provides a better knowledge representation and faster searching possibility of documents for modern Digital Libraries with controlled access to the system. Design/methodology/approach – Since the proposed Digital Library Architecture considers polyhierarchy, the underlying hierarchical structure becomes a Directed Acyclic Graph instead of a tree. A new access control model has been developed for such a polyhierarchic ontology structure. It has been shown that such model may give rise to undecidability problem. A client specific view generation mechanism has been developed to solve the problem. Findings – The paper has three major contributions. First, it provides better knowledge representation for present-day digital libraries, as new interdisciplinary subject areas are getting introduced. Concepts representing interdisciplinary subject areas will have multiple parents, and consequently, the library ontology introduces a new set of nodes representing document classes. This concept also provides faster search mechanism. Secondly, a new access control model has been introduced for the ontology structure where a user gets authorizations to access a concept node only if its credential supports it. Lastly, a client-based view generation algorithm has been developed so that a client’s access remains limited to its view and avoids any possibility of undecidability in authorization specification. Research limitations/implications – The proposed model, in its present form, supports only read and browse facilities. It would later be extended for addition and update of documents. Moreover, the paper explains the model in a single user environment. It will be augmented later to consider simultaneous access from multiple users. Practical implications – The paper emphasizes the need for changing the present digital library ontology to a polyhierarchic structure to provide proper representation of knowledge related to the concepts covering interdisciplinary subject areas. Possible implementation strategies have also been mentioned. This design method can also be extended for other semantic web applications. Originality/value – This paper offers a new knowledge management strategy to cover the gradual proliferation of interdisciplinary subject areas along with a suitable access control model for a digital library ontology. This methodology can also be extended for other semantic web applications.

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Section: Discussionmentioning

confidence: 99%

Section: Access Control Policies and Operational Issuesmentioning

confidence: 99%

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Resolving authorization conflicts by ontology views for controlled access to a digital library

Dasgupta

Pal

Mazumdar

et al. 2015

Journal of Knowledge Management

Self Cite

View full text Add to dashboard Cite

show abstract

“…Ontology-based framework for sharing and integrating educational resource [16]. Subhasis [13] propose solution to conflict between role hierarchy and concept hierarchy in digital library ontology. And also Marcos [11] defines a formal, axiomatic ontology for digital library.…”

Section: Problems Statementmentioning

confidence: 99%

Developing Model for library Ontology Using Protégé Tool: Process, Reasoning and Visualisation

Uba¹,

Abubakar²,

Ibrahim³

2019

IJASTR

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Library information system on web in based on HTML which can display information simply, mostly restricted to manual keyword searches which may results in irrelevant information retrieval. Semantic web overcome this issue, but cannot do without ontology. In this paper education sector is considered and library ontology is presented to pivot the role of library information system that will ensure the use and re-used knowledge and shared common understanding of library information system, which can be communicated between people and across application systems. The methodology is based on the tools used in developing the ontology, several tools are used to create ontology. This paper will discuss some terms of library through library ontology. And protégé tool with its extensible plug-in will be use to create the library ontology. Focusing on the facilities and services of a library, various aspects like super class and sub class hierarchy, creating a sub class, instances for class illustration, query retrieval process, visualization and graph views have been demonstrated.

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Resolving conflicts between role-hierarchy and concept-hierarchy in a Digital Library ontology

Cited by 2 publications

References 10 publications

Resolving authorization conflicts by ontology views for controlled access to a digital library

Resolving authorization conflicts by ontology views for controlled access to a digital library

Developing Model for library Ontology Using Protégé Tool: Process, Reasoning and Visualisation

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