نتایج جستجو برای: spatial relations

تعداد نتایج: 500405  

2012
Yukio Sadahiro

This paper develops a new framework for analyzing the relations among distributions of spatial objects. Existing analytical methods usually focus on the distribution of one or two specific types of spatial objects. This paper, on the other hand, deals with the relations among more than two distributions of spatial objects. The framework is applicable independent of the type of spatial objects. ...

2007
Stephan Mäs

Integrity constraints play a major role when the quality of spatial data is checked by automatic procedures. Nevertheless the possibilities of checking the internal consistency of the integrity constraints themselves are hardly researched yet. This work analyses the applicability of reasoning techniques like the composition of spatial relations and constraint satisfaction in networks of relatio...

Journal: :Spatial Cognition & Computation 1999
Markus Knauff

Qualitative spatial reasoning (QSR) is often claimed to be cognitively more plausible than conventional numerical approaches to spatial reasoning, because it copes with the indeterminacy of spatial data and allows inferences based on incomplete spatial knowledge. The paper reports experimental results concerning the cognitive adequacy of an important approach used in QSR, namely the spatial int...

Journal: :ISPRS Int. J. Geo-Information 2017
Jingwei Shen Tinggang Zhou Min Chen

Determining the spatial relations between objects is a primary function of a geographic information system (GIS). One important aspect of spatial relations is topological relations, which remain constant under topological transformations. Describing the geometry of a spatial object using the OpenGIS Simple Features Specification requires only simple features: the interior, boundary and exterior...

2008
Xin Wang Pascal Matsakis Lana Trick Blair Nonnecke Melanie A. Veltman

Information describing the layout of objects in space is commonly conveyed through the use of linguistic terms denoting spatial relations that hold between the objects. Though progress has been made in the understanding and modelling of many individual relations, a better understanding of how human subjects use spatial relations together in natural language to is required. This paper outlines t...

2015
Bo Liu Dajun Li Yuanping Xia Jian Ruan Lili Xu Huanyi Wu

In recent years, formalization and reasoning of topological relations have become a hot topic as a means to generate knowledge about the relations between spatial objects at the conceptual and geometrical levels. These mechanisms have been widely used in spatial data query, spatial data mining, evaluation of equivalence and similarity in a spatial scene, as well as for consistency assessment of...

Journal: :Memory & cognition 2002
Markus Knauff P N Johnson-Laird

Although it is natural to suppose that visual mental imagery is important in human deductive reasoning, the evidence is equivocal. This article argues that reasoning studies have not distinguished between ease of visualization and ease of constructing spatial models. Rating studies show that these factors can be separated. Their results yielded four sorts of relations: (1) visuospatial relation...

Journal: :J. UCS 2002
Florence Le Ber Amedeo Napoli

Our work is concerned with the design of a knowledge-based system for recognizing agricultural landscape models on land-use maps. Landscape models are defined as sets of spatial structures and spatial relations. This paper focuses on the representation of topological relations inside an object-based representation system. In this system, relations are represented by objects with their own prope...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید