Maintenance for sustainable ontologies

Medeni, İhsan Tolga
In computer and information sciences, ontology based information systems have been seen as an opportunity to represent knowledge as to define and categorize digital reflections of physical entities, domains and relations between pairs of them. For these digital domains and entities, information oriented, ontology based structures have become popular for creation of knowledge structures for organizations. Based on this perspective, by using different ontology definitions, organizations have been building their own digital ontologies for a wide variety of reasons. However, construction of an ontology cannot be concluded with a single build; it requires maintenance, which is in parallel with organizational and organization’s environmental changes. The ontology maintenance idea arises to support this requirement. In this study, to answer this requirement, previously created and maintained SWEET, Galen and Public Finance Management ontologies were studied as cases by looking at implemented ontology tasks. After that, the findings were derived from these cases and these findings were compared with the BIHAP system ontology with implementation of questionnaire to the developers and end users of the system. The validation of the questionnaire was ensured by implementation of interviews to the previous questionnaire participants. The results revealed the implementation of ontology tasks for the ontology maintenance purposes.


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Beygu, Tankut; Grünberg, David; Department of Philosophy (2003)
Gaining prominence at first as a technological concept, information has found a significant role in the study of various problems in philosophy as well as in the diverse fields of science and technology.Though widely employed and studied, information is a complex notion, as it were, resisting a compact description of its characteristics, appearing non-uniformly in such miscellaneous ways as an organizing principle, a form of knowledge, and a connotation of entropy. Apparently, there is a need for further st...
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Vural, Gürkan; Yöndem (Turhan), Meltem; Department of Computer Engineering (2006)
The anomaly detection task is to recognize the presence of an unusual (and potentially hazardous) state within the behaviors or activities of a computer user, system, or network with respect to some model of normal behavior which may be either hard-coded or learned from observation. An anomaly detection agent faces many learning problems including learning from streams of temporal data, learning from instances of a single class, and adaptation to a dynamically changing concept. The domain is complicated by ...
Akman, Oytun; Bayramoglu, Neslihan; Alatan, Abdullah Aydın; Jonker, Pieter (2010-06-09)
Object segmentation has an important role in the field of computer vision for semantic information inference. Many applications such as 3DTV archive systems, 3D/2D model fitting, object recognition and shape retrieval are strongly dependent to the performance of the segmentation process. In this paper we present a new algorithm for object localization and segmentation based on the spatial information obtained via a Time-of-Flight (TOF) camera. 3D points obtained via a TOF camera are projected onto the major...
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Purpose The purpose of this paper is to demonstrate the importance of undertaking a systemic view of information systems evaluation that augments the frequently reported prescriptive (cost/benefit) analysis approaches. Design/methodology/approach The paper adopts a qualitative case perspective and derives a framework for substantive information systems evaluation factors (PRISE). Three empirical formulations are considered and a comparison made to determine the content and context of the findings. Finding...
Citation Formats
İ. T. Medeni, “Maintenance for sustainable ontologies,” Ph.D. - Doctoral Program, Middle East Technical University, 2014.