WordNet
- the activity of giving vitality and vigour to something (同)invigoration, animation
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出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2014/01/21 09:57:17」(JST)
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Vivification is an operation on a description logic knowledge base to improve performance of a semantic reasoner. Vivification replaces a disjunction of concepts by the least common subsumer of the concepts .
The goal of this operation is to improve the performance of the reasoner by replacing a complex set of concepts with a single concept which subsumes the original concepts.
For example, consider the example given in (Cohen 92): Suppose we have the concept . This concept can be vivified into a simpler concept . This summarization leads to an approximation that may not be exactly equivalent to the original.
An approximation[edit]
Knowledge base vivification is not necessarily exact. If the reasoner is operating under the open world assumption we may get surprising results. In the previous example, if we replace the disjunction with the vivified concept, we will arrive at a surprising results.
First, we find that the reasoner will no longer classify Jill as either a pianist or an organist. Even though and are the only two sub-classes, under the OWA we can no longer classify Jill as playing one or the other. The reason is that there may be another keyboard instrument (e.g. a harpsichord) that Jill plays but which does not have a specific subclass.
References[edit]
- Cohen, W.W., Borgida, A., Hirsh, H., Computing Least Common Subsumers in Description Logics, In: Proc. AAAI-92, AAAI Press/The MIT Press, 1992, pages 754--760. CiteSeer
- Baader, F., Kusters, R., Wolter F., Extensions to Description Logics. In F. Baader, D. Calvanese, D. McGuinness, D. Nardi, and P.F. Patel-Schneider, editors, The Description Logic Handbook: Theory, Implementation, and Applications. Cambridge University Press, 2003. http://citeseer.ist.psu.edu/baader03basic.html
English Journal
- A biodegradable shape-memory nanocomposite with excellent magnetism sensitivity.
- Yu X, Zhou S, Zheng X, Guo T, Xiao Y, Song B.SourceKey Laboratory of Advanced Technologies of Material, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, People's Republic of China.
- Nanotechnology.Nanotechnology.2009 Jun 10;20(23):235702. doi: 10.1088/0957-4484/20/23/235702. Epub 2009 May 19.
- This paper reports a kind of biodegradable nanocomposite which can show an excellent shape-memory property in hot water or in an alternating magnetic field with f = 20 kH and H = 6.8 kA m(-1). The nanocomposite is composed of crosslinked poly(epsilon-caprolactone) (c-PCL) and Fe(3)O(4) nanoparticles
- PMID 19451683
- A crisis in chronic pain care: an ethical analysis. Part three: Toward an integrative, multi-disciplinary pain medicine built around the needs of the patient.
- Giordano J, Schatman ME.SourceDepartment of Medicine, Georgetown University, Washington, DC 20057, USA. jg353@georgetown.edu
- Pain physician.Pain Physician.2008 Nov-Dec;11(6):775-84.
- A number of variables have contributed to the current crisis in chronic pain care and are affected by, and affect, the philosophies and politics that influence the socio-economic climate of the American healthcare system. Thus, we posit that managing the crisis in chronic pain care in the United Sta
- PMID 19057625
- Biofeedback-aided hypnotherapy for intractable phobic anxiety.
- Somer E.SourceSchool of Social Work, University of Haifa, Israel.
- The American journal of clinical hypnosis.Am J Clin Hypn.1995 Jan;37(3):54-64.
- Phobically avoidant people need treatments that enable them to cope effectively with their task threats. Field-mastery techniques that emphasize the importance of cognitively and behaviorally active roles to be taken by both therapist and patient have been shown to be superior to the clinic-based ex
- PMID 7879726
Related Links
- British Dictionary definitions for vivification Expand vivify / ˈvɪvɪˌfa ɪ / verb (transitive) -fies, -fying, -fied 1. to bring to life; animate 2. to make more vivid or striking Derived Forms vivification (ˌvɪvɪfɪ'keɪʃən) noun vivifier, noun C16: from ...
- At its present point of vivification, the scarecrow reminds me of some of the lukewarm and abortive characters, composed of heterogeneous materials, used for the thousandth time, and never worth using, with which romance writers ...
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