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Computing protected circumscription

Jack Minker, Donald Perlis
1985 The Journal of Logic Programming  
T his paper deals with computing circumscription in the case of Horn data with additional protection (indefinite data), an intermediate investigation between Reiter'sr esult on predicate completion and  ...  Lifschitz'se fforts to makeg eneral (formula) circumscription more efficient as a computational tool.  ...  McCarthy's [1984] later version of circumscription, called formula circumscription, does subsume protected circumscription, but it is not clear that Reiter'sw ork extends to allowo ne to compute efficiently  ... 
doi:10.1016/s0743-1066(85)80002-9 fatcat:pcspjcihtvcybdkayh6f2fm5ji

Sometimes Updates Are Circumscription

Marianne Winslett
1989 International Joint Conference on Artificial Intelligence  
In addition, future advances in computing cir cumscription can be mapped to improvements in computing theory revisions, and vice versa.  ...  This paper shows that model-based the ory revision is actually expressible as a form of circumscription.  ...  The theory revision approach should en joy computational advantages over circumscription, be cause the theory revision approach does not retain any information about previous states of the world.  ... 
dblp:conf/ijcai/Winslett89 fatcat:yhgsvdtagjdwdo3jnj2djmruci

Page 436 of Mathematical Reviews Vol. , Issue 87a [page]

1987 Mathematical Reviews  
protected circumscription.  ...  completion and Lifschitz efforts to make general (for- mula) circumscription more efficient as a computational tool.  ... 

An overview of nonmonotonic reasoning and logic programming

Jack Minker
1993 The Journal of Logic Programming  
Subrahmanian and Lu [201] have extended the concept of protected circumscription.  ...  Minker and Perlis [147] introduced protected circumsctiption and demonstrated how one can compute in this theory with logic programs.  ... 
doi:10.1016/0743-1066(93)90028-f fatcat:zs5h4ximffdfvapevyr6rvs4fm

Computing with Logic as Operator Elimination: The ToyElim System [chapter]

Christoph Wernhard
2013 Lecture Notes in Computer Science  
This approach allows to express many representational and computational tasks in knowledge representation -for example computation of abductive explanations and models with respect to logic programming  ...  prototype system is described whose core functionality is, based on propositional logic, the elimination of second-order operators, such as Boolean quantifiers and operators for projection, forgetting and circumscription  ...  Our method then subsumes a variety of tasks: Computation of uniform interpolants, QBF and SAT solving, as well as computation of certain forms of abductive explanations, of propositional circumscription  ... 
doi:10.1007/978-3-642-41524-1_17 fatcat:zzzgdm5icjf65jtutn7eqwlqsa

A Tractable Logic for Molecular Biology

Adrien Husson, Jean Krivine
2019 Electronic Proceedings in Theoretical Computer Science  
A second-order circumscription operator then enables nonmonotonic reasoning on the changes implied by a formula.  ...  Related work Circumscription dates back to [14] . We use an instanciation of unified circumscription, a new flavor of circumscription which generalises [9] .  ...  We combine general domain circumscription (GDC) [9, 14] and parallel predicate circumscription [15] .  ... 
doi:10.4204/eptcs.306.17 fatcat:fnccj5gdyzd6fpm5gpoi25lusq

Intended Models, Circumscription and Commonsense Reasoning

Wlodek Zadrozny
1987 International Joint Conference on Artificial Intelligence  
We show that such a model is an adequate tool for generating intended interpretations, and also for problems that cannot be satisfactorily solved by circumscription.  ...  , pointwise, variable, prioritized, protected).  ...  Implementation: "heuristie computer". OBJECT LEVEL : Axioms + theorems in a well de fined formal system -geometry .  ... 
dblp:conf/ijcai/Zadrozny87 fatcat:qp6eljfgizcvna3i5adls6uamq

Left Atrial Diverticula: Innocent Bystanders or Wolves in Sheep's Clothing?

Danny Veen, Tobias A. Bruning, Natasja. M.S. Groot
2020 Cardiovascular Electrophysiology  
This article is protected by copyright. All rights reserved.  ...  The finding of left atria diverticula (LAD) on cardiac Computed Tomography (CT) images obtained from patients with atrial fibrillation (AF) referred for pulmonary vein isolation is not uncommon.  ...  They have a circumscriptive ostium and their body shows a variable morphology including cystic, sac like, tubular, and hooked shaped.  ... 
doi:10.1111/jce.14581 pmid:32445428 fatcat:3srmy3rponandoeuvj46zsgwqu

Page 5736 of Mathematical Reviews Vol. , Issue 92j [page]

1992 Mathematical Reviews  
The proof theory appeals to arguments (consistent sets of assumptions) which may conflict with each other and be protected from each other.  ...  The main theorem describes the effect of the circumscription that solves the frame problem in the pres- ence of ramifications.  ... 

Model enumeration in propositional circumscription via unsatisfiable core analysis [article]

Mario Alviano
2017 arXiv   pre-print
Circumscription formalizes such preference relations by associating propositional theories with minimal models.  ...  Lee and Lin (2006) studied theoretical properties of the computational problem associated with circumscription.  ...  More specifically, the idea of circumscription is to minimize the extension of some predicates.  ... 
arXiv:1707.01423v1 fatcat:6fnygfwx5vfrxkuzvpfc5lpfim

Epiploic appendagitis in an 80-year-old woman, an uncommon cause of acute abdominal pain in the elderly

A. González-García, M. Escribano-Pérez, S. Diz Fariña
2015 Revista de Gastroenterología de México (English Edition)  
B) A 3 × 3 mm image, immediately adjacent to the previous image, consistent with circumscript inflammatory changes in the epiploic fat of the left flank with a small quantity of free fluid.  ...  Physical examination Ethical responsibilities Protection of persons and animals. The authors declare that no experiments were performed on humans or animals for this study. Data confidentiality.  ... 
doi:10.1016/j.rgmxen.2015.10.003 fatcat:n7kr3irkuvfmzluu3gpwzhrbri

Event calculus planning revisited [chapter]

Murray Shanahan
1997 Lecture Notes in Computer Science  
In particular, I will show that if we adopt the event calculus as our logical formalism and employ abductive logic programming as our theorem proving technique, then the computation performed mirrors closely  ...  Many of the computational concepts central to the literature on partial order planning, such as threats, protected links, promotions and demotions [Chapman, 1987] , [Penberthy & Weld, 1992] , turn out  ...  Happens(a,t) ≡ def Happens(a,t,t) The frame problem is overcome through circumscription.  ... 
doi:10.1007/3-540-63912-8_101 fatcat:khujelm2knhgldpl636vzpcroa

Clinical multifactorial analysis of early postoperative seizures in elderly patients following meningioma resection

2015 Molecular and clinical oncology  
Tumor diameter, PPAD administration, PTBE and tumor site were closely correlated with early postoperative seizures; PTBE and PPAD administration were risk and protective factors, respectively.  ...  The correlation of the 14 clinical factors (gender, tumor site, dyskinesia, peritumoral brain edema (PTBE), tumor diameter, pre-and postoperative prophylaxes, surgery time, tumor adhesion, circumscription  ...  All the patients had been diagnosed by head magnetic resonance imaging and/or computed tomography scans, and the gross tumor volume, tumor site and any peritumoral brain edema (PTBE) were preliminarily  ... 
doi:10.3892/mco.2015.493 pmid:26137257 pmcid:PMC4471514 fatcat:4c6iyveedrfrpj3l23amhmhvdy


No authorship indicated
1921 Psychological bulletin  
The basic principle has been developed from that underlying Kelley's tables for the computation of partial correlations. P. T. YOUNG (Illinois) 641. CALKINS, M.  ...  The task which the study of circumscript attributes sets for itself is the working out of a new "dynamology."  ... 
doi:10.1037/h0067001 fatcat:suaqqh5vinaf7gwwr6i3o7xyfu

Natural Gas: Moving to Chaos and Complexity in Financial Statements [chapter]

Fernando Juarez
2012 Natural Gas - Extraction to End Use  
This has an impact on contract prices and the consumer must be protected against significant variations in prices.  ...  Financial ratios are open to different explanations depending on the tacit knowledge that people have of the company, and the reasons to compute them [82] .  ... 
doi:10.5772/54131 fatcat:ngvuejoubjckjli4zlymw4l4wm
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