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Spatio-Temporal Predicates
- IEEE Transactions on Knowledge and Data Engineering
, 1999
"... AbstractÐThis paper investigates temporal changes of topological relationships and thereby integrates two important research areas: First, two-dimensional topological relationships that have been investigated quite intensively and, second, the change of spatial information over time. We investigate ..."
Abstract
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Cited by 57 (15 self)
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spatio-temporal predicates, which describe developments of well-known spatial topological relationships. A framework is developed in which spatio-temporal predicates can be obtained by temporal aggregation of elementary spatial predicates and sequential composition. We compare our framework with two
Evaluation of Spatio-Temporal Predicates on Moving Objects
- in Proceedings of the 21st International Conference on Data Engineering
, 2005
"... Moving objects databases managing spatial objects with continuously changing position and extent over time have recently found large interest in the database community. Queries about moving objects become particularly interesting when they ask for temporal changes in the topological relationships be ..."
Abstract
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Cited by 2 (0 self)
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between evolving spatial objects. A concept of spatio-temporal predicates has been proposed to describe these relationships. The goal of this paper is to design efficient algorithms for them so that they can be used in spatiotemporal joins and selections. This paper proposes not to design an algorithm
Using spatio-temporal predicates to model situations in field sports
"... Introduction The role of technology is a hot issue in contemporary sport. Measuring and transmission devices are now sufficiently developed to be attached to clothes or body parts. These systems can provide data rates of up to 1000 measurements per second, accurate down to few centimetres [5]. This ..."
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Introduction The role of technology is a hot issue in contemporary sport. Measuring and transmission devices are now sufficiently developed to be attached to clothes or body parts. These systems can provide data rates of up to 1000 measurements per second, accurate down to few centimetres [5]. This represents a rather big data resource.
Visual Specifications of Spatio-Temporal Developments
- In 15th IEEE Symp. on Visual Languages
, 1999
"... We introduce a visual language for the specification of temporally changing spatial situations. The main idea is to represent spatio-temporal (ST) objects in a two-dimensional way by their trace. The intersections of these traces with other objects are interpreted and translated into sequences of sp ..."
Abstract
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Cited by 13 (9 self)
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of spatial and spatio-temporal predicates, called developments, that can then be used, for example, to query spatiotemporal databases. 1. ST Objects, Predicates, and Developments Spatio-temporal objects like flying airplanes, migrating whales, or spreading fires have the characteristic property
Developments in Spatio-Temporal Query Languages
, 1999
"... Integrating spatio-temporal data as abstract data types into already existing data models is a promising approach to creating spatio-temporal query languages. In this context, an important new class of queries can be identified which is concerned with developments of spatial objects over time, that ..."
Abstract
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Cited by 37 (11 self)
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, that is, queries ask especially for changes in spatial relationships. Based on a definition of the notion of spatio-temporal predicate we provide a framework which allows to build more and more complex predicates starting with a small set of elementary ones. These predicates can be well used
Developments in Spatio-Temporal Query Languages
"... Integrating spatio-temporal data as abstract data types into already existing data models is a promising approach to creating spatio-temporal query languages. In this context, an important new class of queries can be identified which is concerned with developments of spatial objects over time, that ..."
Abstract
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, that is, queries ask especially for changes in spatial relationships. Based on a definition of the notion of spatio-temporal predicate we provide a framework which allows to build more and more complex predicates starting with a small set of elementary ones. These predicates can be well used
FlexTrack: a System for Querying Flexible Patterns in Trajectory Databases
- In Proc. Int’l Symp. on Advances in Spatial and Temporal Databases (SSTD
, 2011
"... Abstract. We describe the FlexTrack system for querying trajectories using flexible pattern queries. Such queries are composed of a sequence of simple spatio-temporal predicates, e.g., range and nearest-neighbors, as well as complex motion pattern predicates, e.g., predicates that contain variables ..."
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Cited by 1 (1 self)
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Abstract. We describe the FlexTrack system for querying trajectories using flexible pattern queries. Such queries are composed of a sequence of simple spatio-temporal predicates, e.g., range and nearest-neighbors, as well as complex motion pattern predicates, e.g., predicates that contain
STQL -- A Spatio-Temporal Query Language
, 2002
"... Integrating spatio-temporal data as abstract data types into already existing data models is a promising approach to creating spatio-temporal query languages. Based on a formal foundation presented elsewhere, we present the main aspects of an SQL-like, spatio-temporal query language, called STQL. As ..."
Abstract
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Cited by 6 (2 self)
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, the projection into space and time, selection, and aggregation. Another important class of queries is concerned with developments, which are changes of spatial relationships over time. Based on the notion of spatio-temporal predicates we provide a framework in STQL that allows a user to build more and more
Modeling Historical and Future Spatio-Temporal Relationships of Moving Objects in Databases
"... Abstract. Moving object databases have recently found large interest in the database community, geographical information systems, and geosciences. So far, moving object models have focused exclusively either on past or future movements. The so-called Balloon Model is the first attempt to treat past ..."
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Cited by 3 (0 self)
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and future movements of moving objects in a consistent and integrated manner. Based on a new set of spatio-temporal data types and operations as well as former research, in this paper, we propose a design of spatio-temporal predicates on Balloon objects. These predicates explore the topological relationships
Chapter 1 STQL — A SPATIO-TEMPORAL QUERY LANGUAGE
"... Abstract Integrating spatio-temporal data as abstract data types into already existing data models is a promising approach to creating spatio-temporal query languages. Based on a formal foundation presented elsewhere, we present the main aspects of an SQL-like, spatio-temporal query language, called ..."
Abstract
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operations, the projection into space and time, selection, and aggregation. Another important class of queries is concerned with developments, which are changes of spatial relationships over time. Based on the notion of spatio-temporal predicates we provide a framework in STQL that allows a user to build
Results 1 - 10
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80
