caa a22 4500 475800311 CHVBK 20180406123735.0 cr unu---uuuuu 170329e20000401xx s 000 0 eng 10.1023/A:1008316802976 doi (NATIONALLICENCE)springer-10.1023/A:1008316802976 Refined Epistemic Entrenchment [Elektronische Daten] [Thomas Meyer, Willem Labuschagne, Johannes Heidema] Epistemic entrenchment, as presented by Gärdenfors and Makinson (1988) and Gärdenfors (1988), is a formalisation of the intuition that, when forced to choose between two beliefs, an agent will giveup the less entrenched one. While their formalisation satisfactorilycaptures the intuitive notion of the entrenchment of beliefs in a number ofaspects, the requirement that all wffs be comparable has drawn criticismfrom various quarters. We define a set of refined versions of theirentrenchment orderings that are not subject to the same criticism, andinvestigate the relationship between the refined entrenched orderings,the entrenchment orderings of Gärdenfors and Makinson, and AGM theorycontraction (Alchourrón et al., 1985). To conclude, we compare refinedentrenchment with two related approaches to epistemic entrenchment. Kluwer Academic Publishers, 2000 belief contraction nationallicence belief revision nationallicence epistemic entrenchment nationallicence power orders nationallicence theory change nationallicence Meyer Thomas Department of Computer Science, University of Pretoria, 0002, Pretoria, South Africa aut Labuschagne Willem Department of Computer Science and Information Systems, University of South Africa, Box 392, 0003, Pretoria, South Africa aut Heidema Johannes Department of Mathematics, Applied Mathematics and Astronomy, University of South Africa, Box 392, 0003, Pretoria, South Africa aut Journal of Logic, Language and Information Kluwer Academic Publishers 9/2(2000-04-01), 237-259 0925-8531 9:2<237 2000 9 10849 https://doi.org/10.1023/A:1008316802976 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1008316802976 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Meyer Thomas Department of Computer Science, University of Pretoria, 0002, Pretoria, South Africa aut NATIONALLICENCE 700 1- Labuschagne Willem Department of Computer Science and Information Systems, University of South Africa, Box 392, 0003, Pretoria, South Africa aut NATIONALLICENCE 700 1- Heidema Johannes Department of Mathematics, Applied Mathematics and Astronomy, University of South Africa, Box 392, 0003, Pretoria, South Africa aut NATIONALLICENCE 773 0- Journal of Logic, Language and Information Kluwer Academic Publishers 9/2(2000-04-01), 237-259 0925-8531 9:2<237 2000 9 10849 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer