Gérard Ligozat – författare

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.

This is the fifth volume in a series of book publications featuring basic interdisciplinary research in spatial cognition. The study of spatial cognition is the study of knowledge about spatial properties of objects and events in the world. Spatial properties include location, size, distance, direction, separation and connection, shape, pattern, and so on. Cognition is about the structures and processes of knowledge: its acquisition, storage, retrieval, manipulation, and use by humans, nonhuman animals, and machines. Broadly construed, cognitive activities include sensation and perception, thinking, attention, imagery, attitudes, memory, learning, language, and reasoning and problem-solving; the interaction of these activities with motoric (body movement) and affective (emotional) processing is recognized as critically important, as well. Cognition is typically considered to make up much of the activity of the mind. But though the mind is an expression of the structures and processes of the brain and nervous system, it is also an expression of an organism or agent with a physical body that typically exists in a physical and socio-cultural world. Researchers study spatial cognition for several reasons. Spatial cognition plays important roles in most of the domains of knowledge and behavior of sentient beings, including activities associated with biological survival, social interaction, cultural practice, and economic exchange. Attempts to describe, predict, and explain the basic components of spatial cognition and their interrelationships stimulate a host of interesting basic questions about how important parts of reality work.

This is the fifth volume in a series of book publications featuring basic interdisciplinary research in spatial cognition. The study of spatial cognition is the study of knowledge about spatial properties of objects and events in the world. Spatial properties include location, size, distance, direction, separation and connection, shape, pattern, and so on. Cognition is about the structures and processes of knowledge: its acquisition, storage, retrieval, manipulation, and use by humans, nonhuman animals, and machines. Broadly construed, cognitive activities include sensation and perception, thinking, attention, imagery, attitudes, memory, learning, language, and reasoning and problem-solving; the interaction of these activities with motoric (body movement) and affective (emotional) processing is recognized as critically important, as well. Cognition is typically considered to make up much of the activity of the mind. But though the mind is an expression of the structures and processes of the brain and nervous system, it is also an expression of an organism or agent with a physical body that typically exists in a physical and socio-cultural world. Researchers study spatial cognition for several reasons. Spatial cognition plays important roles in most of the domains of knowledge and behavior of sentient beings, including activities associated with biological survival, social interaction, cultural practice, and economic exchange. Attempts to describe, predict, and explain the basic components of spatial cognition and their interrelationships stimulate a host of interesting basic questions about how important parts of reality work.

First established in 1993 with a conference in Elba, Italy, COSIT (the International C- ference on Spatial Information Theory) is widely acknowledged as one of the most - portant conferences for the field of spatial information theory. This conference series brings together researchers from a wide range of disciplines for intensive scientific - changes centered on spatial information theory. COSIT submissions typically address research questions drawn from cognitive, perceptual, and environmental psychology, geography, spatial information science, computer science, artificial intelligence, cog- tive science, engineering, cognitive anthropology, linguistics, ontology, architecture, planning, and environmental design. Some of the topical areas include, for example, the cognitive structure of spatial knowledge; events and processes in geographic space; incomplete or imprecise spatial knowledge; languages of spatial relations; navigation by organisms and robots; ontology of space; communication of spatial information; and the social and cultural organization of space to name a few. This volume contains the papers presented at the 9th International Conference on Spatial Information Theory, COSIT 2009, held in Aber Wrac’h, France, September 21–25, 2009. For COSIT 2009, 70 full paper submissions were received. These papers were carefully reviewed by an international Program Committee based on relevance to the conference, intellectual quality, scientific significance, novelty, relation to previously published literature, and clarity of presentation. After reviewing was completed, 30 papers were selected for presentation at the conference and appear in this volume. This number of papers reflects the high quality of submissions to COSIT this year.