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Record Nr. |
UNINA9910814774803321 |
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Autore |
Ligozat Gérard |
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Titolo |
Qualitative spatial and temporal reasoning / / Gérard Ligozat |
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Pubbl/distr/stampa |
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London, U.K., : ISTE |
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Hoboken, N.J., : Wiley, 2012 |
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ISBN |
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9781118601563 |
1118601564 |
9781118601457 |
1118601459 |
9781118601372 |
1118601378 |
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Edizione |
[1st ed.] |
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Descrizione fisica |
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1 online resource (539 p.) |
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Collana |
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Disciplina |
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Soggetti |
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Qualitative reasoning |
Spatial analysis (Statistics) |
Space and time - Mathematical models |
Logic, Symbolic and mathematical |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references (p. [471]-500) and index. |
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Nota di contenuto |
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Cover; Qualitative Spatial and Temporal Reasoning; Title Page; Copyright Page; Table of Contents; Introduction. Qualitative Reasoning; Chapter 1. Allen's Calculus; 1.1. Introduction; 1.1.1. ""The mystery of the dark room""; 1.1.2. Contributions of Allen's formalism; 1.2. Allen's interval relations; 1.2.1. Basic relations; 1.2.2. Disjunctive relations; 1.3. Constraint networks; 1.3.1. Definition; 1.3.2. Expressiveness; 1.3.3. Consistency; 1.4. Constraint propagation; 1.4.1. Operations: inversion and composition; 1.4.2. Composition table; 1.4.3. Allen's algebra; 1.4.4. Algebraic closure |
1.4.5. Enforcing algebraic closure 1.5. Consistency tests; 1.5.1. The case of atomic networks; 1.5.2. Arbitrary networks; 1.5.3. Determining polynomial subsets; Chapter 2. Polynomial Subclasses of Allen's Algebra; 2.1. ""Show me a tractable relation!""; 2.2. Subclasses of Allen's algebra; 2.2.1. A geometrical representation of Allen's relations; |
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2.2.2. Interpretation in terms of granularity; 2.2.3. Convex and pre-convex relations; 2.2.4. The lattice of Allen's basic relations; 2.2.5. Tractability of convex relations; 2.2.6. Pre-convex relations; 2.2.7. Polynomiality of pre-convex relations |
2.2.8. ORD-Horn relations 2.3. Maximal tractable subclasses of Allen's algebra; 2.3.1. An alternative characterization of pre-convex relations; 2.3.2. The other maximal polynomial subclasses; 2.4. Using polynomial subclasses; 2.4.1. Ladkin an Reinefeld's algorithm; 2.4.2. Empirical study of the consistency problem; 2.5. Models of Allen's language; 2.5.1. Representations of Allen's algebra; 2.5.2. Representations of the time-point algebra; 2.5.3. א0-categoricity of Allen's algebra; 2.6. Historical note; Chapter 3.neralized Intervals; 3.1. ""When they built the bridge" |
3.1.1. Towards generalized intervals 3.2. Entities and relations; 3.3. The lattice of basic (p, q)-relations; 3.4. Regions associated with basic (p, q)-relations; 3.4.1. Associated polytopes; 3.4.2. M-convexity of the basic relations; 3.5. Inversion and composition; 3.5.1. Inversion; 3.5.2. Composition; 3.5.3. The algebras of generalized intervals; 3.6. Subclasses of relations: convex and pre-convex relations; 3.6.1. (p, q)-relations; 3.6.2. Convex relations; 3.6.3. Pre-convex relations; 3.7. Constraint networks; 3.8. Tractability of strongly pre-convex relations; 3.8.1. ORD-Horn relations |
3.9. Conclusions 3.10. Historical note; Chapter 4. Binary Qualitative Formalisms; 4.1. ""Night driving""; 4.1.1. Parameters; 4.1.2. A panorama of the presented formalisms; 4.2. Directed points in dimension 1; 4.2.1. Operations; 4.2.2. Constraint networks; 4.2.3. Networks reducible to point networks; 4.2.4. Arbitrary directed point networks; 4.3. Directed intervals; 4.3.1. Operations; 4.3.2. Constraint networks and complexity; 4.4. The OPRA direction calculi; 4.5. Dipole calculi; 4.6. The Cardinal direction calculus; 4.6.1. Convex and pre-convex relations; 4.6.2. Complexity |
4.7. The Rectangle calculus |
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Sommario/riassunto |
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Starting with an updated description of Allen's calculus, the book proceeds with a description of the main qualitative calculi which have been developed over the last two decades. It describes the connection of complexity issues to geometric properties. Models of the formalisms are described using the algebraic notion of weak representations of the associated algebras. The book also includes a presentation of fuzzy extensions of qualitative calculi, and a description of the study of complexity in terms of clones of operations. |
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2. |
Record Nr. |
UNINA9910137458803321 |
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Autore |
Elsa Coslado Justin McGuinness, Catherine Miller (dir.) |
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Titolo |
Médinas immuables ? : gentrification et changement dans les villes historiques marocaines (1996-2010 |
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Pubbl/distr/stampa |
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Centre Jacques-Berque, 2013 |
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[Place of publication not identified], : Centre Jacques Berque, 2013 |
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ISBN |
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Descrizione fisica |
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1 online resource (412 pages) |
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Collana |
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Soggetti |
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Sociology & Social History |
Social Sciences |
Communities - Urban Groups |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Bibliographic Level Mode of Issuance: Monograph |
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Sommario/riassunto |
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Cet ouvrage entend contribuer au renouveau théorique de l’étude des médinas au Maroc, en rendant compte de l’étendue et de la nature d’un phénomène à peine envisageable au début des années quatre-vingt-dix. Les auteurs abordent, en effet, les mutations en cours dans les médinas à partir de la perspective de la gentrification, c'est-à-dire du phénomène de réinvestissement de quartiers anciens, souvent fort détériorés, par des nouveaux résidents aisés, qui y impulsent des dynamiques rénovatrices. S’appuyant sur des enquêtes de terrain dans plusieurs villes marocaines, les études présentées s’intéressent aux profils et aux motivations de ces nouveaux habitants, à leurs interactions avec les anciens habitants, au rôle de l’Etat, aux rapports entre gentrification, tourisme, patrimonialisation et cosmopolitisme. Tout en soulignant les dynamiques convergentes et les caractéristiques que les médinas marocaines partagent avec le modèle « classique » de la gentrification, elles pointent également les spécificités locales, y compris entre les différentes médinas. L’ensemble de ces études et des entretiens avec des personnalités impliquées dans la sauvegarde du patrimoine fournit une première perspective synthétique sur ce phénomène. |
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