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## Spatio-Temporal Predicates (1999)

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Venue: | IEEE Transactions on Knowledge and Data Engineering |

Citations: | 57 - 15 self |

### Citations

2940 | Maintaining knowledge about temporal intervals
- Allen
- 1983
(Show Context)
Citation Context ...ral predicates is to employ concepts of temporal logic. We will first mention some related work and afterwards explain why we will take a partly different approach in this paper. Based on his work in =-=[1]-=- where he has identified thirteen possible relationships (like before, equal, meets, overlaps, during) between intervals, Allen in [2] defines a predicate Holds(p; i) which asserts that a property p i... |

1037 |
Towards a general theory of action and time.'
- Allen
- 1984
(Show Context)
Citation Context ...e a partly different approach in this paper. Based on his work in [1] where he has identified thirteen possible relationships (like before, equal, meets, overlaps, during) between intervals, Allen in =-=[2]-=- defines a predicate Holds(p; i) which asserts that a property p is true during a time interval i. This predicate implies that p holds at every subinterval of i as well. Logical operators like Boolean... |

443 |
Point-set topological spatial relations:
- Egenhofer, Franzosa
- 1991
(Show Context)
Citation Context ...n features in the (especially two-dimensional) Euclidean space have been intensively studied in the literature. Using point sets and point set topology as a formal framework, the 9-intersection model =-=[13, 7]-=- provides a canonical collection of topological predicates for each combination of spatial types. Based on the nine topologically invariant intersections of boundaries, interiors, and exteriors of the... |

261 |
Introduction to Functional Programming using Haskell,
- Bird
- 1988
(Show Context)
Citation Context ... and the process of building such a section is called sectioning. Sectioning is a popular syntactic tool in functional programming that allows to denote certain functions in a highly concise way (see =-=[4]-=-). For example, (1+) fixes the first argument of the addition function with 1 and thus denotes the successor function. Likewise, (\Gamma1) denotes the predecessor function (note that this is different... |

200 | A foundation for representing and querying moving objects,
- Guting, Bohlen, et al.
- 2000
(Show Context)
Citation Context ...endent) distance of an airplane and a storm. This could be achieved by an operation: Distance : (point) \Theta (region) ! (real ) This example demonstrates the important principle of temporal lifting =-=[29] avoiding -=-an inflation of operation definitions: we can, in principle, take almost any flat (that is, non-temporal) operation and "lift" it so that it works on temporal objects returning also a tempor... |

167 | Spatio-temporal data types: an approach to modeling and querying moving objects in databases,"
- Erwig, Schneider, et al.
- 1999
(Show Context)
Citation Context ...orts a more integrated view of space and time and incorporates the treatment of continuous spatial changes. It will be the basis of this paper and introduces the concept of spatio-temporal data types =-=[15, 16]-=-. These data types are designed as abstract data types whose values can be integrated as complex entities into databases [36, 35] and whose definition and integration into databases is independent of ... |

158 |
A small set of formal topological relationships suitable for end-user interaction
- CLEMENTINI, FELICE, et al.
- 1993
(Show Context)
Citation Context ...n features in the (especially two-dimensional) Euclidean space have been intensively studied in the literature. Using point sets and point set topology as a formal framework, the 9-intersection model =-=[13, 7]-=- provides a canonical collection of topological predicates for each combination of spatial types. Based on the nine topologically invariant intersections of boundaries, interiors, and exteriors of the... |

150 |
K.Al-Taha." Reasoning About Gradual Changes of Topological Relationships". Theories and Methods of Spatio-Temporal Reasoning in Geographic Space.
- Egenhofer
- 1992
(Show Context)
Citation Context ...es on spatio-temporal objects (Section 5). Second, we are interested in designing a canonical collection of spatio-temporal predicates (Section 6). A first hint to a possible design gives the work in =-=[12] which consider-=-s possible topological transitions (that is, changes) between topological relationships that are represented in a so-called "conceptual-neighborhood-graph" or "closest-topological-relat... |

144 | On the Complexity of Qualitative Spatial Reasoning: A Maximal Tractable Fragment of the Region Connection Calculus.
- Renz, Nebel
- 1999
(Show Context)
Citation Context ...ime intervals and not on time points. Galton [25] has extended Allen's approach to the treatment of temporally changing topological relationships. Topological relationships are based on the RCC model =-=[10, 31]-=- which comes to similar results as Egenhofer's 9-intersection model. In contrast to Allen, Galton also takes time points into account, as we do. In specifying changes of spatial situations he uses the... |

98 |
A unified model for spatial and temporal information
- Worboys
- 1994
(Show Context)
Citation Context ...ch. 2.1 Spatio-Temporal Objects So far, only a few data models for spatio-temporal data have been proposed. One approach has been to appropriately extend a spatial data model by temporal concepts. In =-=[41]-=- spatio-temporal objects are defined as so-called spatio-bitemporal complexes. Their spatial features are described by simplicial complexes, and their temporal features are given by bitemporal element... |

76 | Geo-relational algebra: A model and query language for geometric database systems
- Güting
- 1988
(Show Context)
Citation Context ..., line, and region have turned out to be a fundamental abstraction for modeling the two-dimensional structure of geometric entities, their properties, relationships, and operations (see, for example, =-=[28, 30, 32, 33, 37]-=-). Points are elements of the Euclidean plane. Lines are two-dimensional curves. Regions describe point sets with a two-dimensional extent and are bounded by lines which in this context are called bou... |

74 |
Set Membership Classification: A Unified Approach to Geometric Intersection Problems,"
- Tilove
- 1980
(Show Context)
Citation Context ...to formally express this requirement and to avoid the anomalies just described, the formalization of a data type for regions is based on point set topology [23] and on a process called regularization =-=[40]-=-. Point set topology also rests on the point set paradigm but additionally distinguishes different parts of an (arbitrary) point set. Given such a point set, say A, these parts identify its boundary @... |

63 |
Qualitative and Topological Relationships in Spatial Databases.
- Cui, Cohn, et al.
- 1993
(Show Context)
Citation Context ...ime intervals and not on time points. Galton [25] has extended Allen's approach to the treatment of temporally changing topological relationships. Topological relationships are based on the RCC model =-=[10, 31]-=- which comes to similar results as Egenhofer's 9-intersection model. In contrast to Allen, Galton also takes time points into account, as we do. In specifying changes of spatial situations he uses the... |

59 |
Spatial Data Types for Database Systems: Finite Resolution Geometries for Geographic Information Systems
- Schneider
- 1997
(Show Context)
Citation Context ..., line, and region have turned out to be a fundamental abstraction for modeling the two-dimensional structure of geometric entities, their properties, relationships, and operations (see, for example, =-=[28, 30, 32, 33, 37]-=-). Points are elements of the Euclidean plane. Lines are two-dimensional curves. Regions describe point sets with a two-dimensional extent and are bounded by lines which in this context are called bou... |

58 | A.: ‘Thematic Map Modelling
- Scholl, Voisard
- 1989
(Show Context)
Citation Context ..., line, and region have turned out to be a fundamental abstraction for modeling the two-dimensional structure of geometric entities, their properties, relationships, and operations (see, for example, =-=[28, 30, 32, 33, 37]-=-). Points are elements of the Euclidean plane. Lines are two-dimensional curves. Regions describe point sets with a two-dimensional extent and are bounded by lines which in this context are called bou... |

58 | Specifications for efficient indexing in spatiotemporal databases
- Theodoridis, Sellis, et al.
- 1998
(Show Context)
Citation Context ...bitemporal complexes. Their spatial features are described by simplicial complexes, and their temporal features are given by bitemporal elements attached to all components of simplicial complexes. In =-=[39]-=-, in a discrete snapshot model, a spatio-temporal object o is given as a time-evolving spatial object, that is, its evolution is represented by a set of triples (o id ; s i ; t i ) where o id is the o... |

55 | Modeling Conceptual Neighborhoods of Topological Line-Region Relations.
- Egenhofer, Mark
- 1995
(Show Context)
Citation Context ...tions [13] have been identified which lead to the eight predicates called equal, disjoint, coveredBy, covers, overlap, meet, inside, and contains. For a line and a region 19 topological relationships =-=[14]-=- can be distinguished. For two lines 33 relationships [11] can be found. For a point and a region we obtain the three predicates disjoint, meet, and inside. For two points we get the two predicates di... |

54 |
Application of Abstract Data Types and Abstract Indices to CAD Data Bases
- Stonebraker, Rubenstein, et al.
- 1983
(Show Context)
Citation Context ...of this paper and introduces the concept of spatio-temporal data types [15, 16]. These data types are designed as abstract data types whose values can be integrated as complex entities into databases =-=[36, 35]-=- and whose definition and integration into databases is independent of a particular DBMS data model. The definition of a temporal object [22] in general is motivated by the observation that anything t... |

51 |
Symbolic description and visual querying of image sequences using spatio-temporal logic,”
- Bimbo, Vicario, et al.
- 1995
(Show Context)
Citation Context ...ed in spatio-temporal query languages. The concept for spatio-temporal predicates presented in this paper is a hybrid approach taking into account elements from temporal logic (similar to the work in =-=[3]-=-) and elements from point set theory and point set topology. The main reason for not taking a purely logic approach is the intended integration into spatio-temporal databases and query languages. Thes... |

51 |
Point Set Topology.
- Gaal
- 1964
(Show Context)
Citation Context ...ll-defined and regular. In order to be able to formally express this requirement and to avoid the anomalies just described, the formalization of a data type for regions is based on point set topology =-=[23]-=- and on a process called regularization [40]. Point set topology also rests on the point set paradigm but additionally distinguishes different parts of an (arbitrary) point set. Given such a point set... |

51 | Realm-Based Spatial Data Types
- Güting, Schneider
- 1995
(Show Context)
Citation Context ...e, and region have turned out to be a fundamental abstraction for modeling the twodimensional structure of geometric entities, their properties, relationships, and operations (see, for example, [28], =-=[30]-=-, [32], [33], [37]). Points are elements of the Euclidean plane. Lines are two-dimensional curves. Regions describe point sets with a two-dimensional extent and are bounded by lines which in this cont... |

45 | Spatiotemporal data handling with constraints
- Grumbach, Rigaux, et al.
- 2001
(Show Context)
Citation Context ...odels integrating spatial aspects include variants of Gadia's temporal model [24], which are described in [6, 5]. A third approach has been to use linear constraints for modeling spatio-temporal data =-=[27]-=-. This model allows to efficiently represent and manipulate infinite point sets in arbitrary dimension. But in [27] time and geometry are treated as different and independent categories of data. Unfor... |

43 |
Geo-SAL—a query language for spatial data analysis
- Svensson, Huang
- 1991
(Show Context)
Citation Context |

41 |
Temporal Databases: A Prelude to Parametric Data
- Gadia, Nair
(Show Context)
Citation Context ... approach has been to appropriately extend a temporal data model based on attribute timestamps by spatial concepts. In contrast to tuple timestamped models, attribute timestamped models (described in =-=[8, 9, 24, 34]-=-, for example) aim at gathering information about an object in one tuple and allow complex attribute values. These complex values incorporate the temporal dimension and are frequently modeled as funct... |

39 | Abstract and discrete modeling of spatiotemporal data types
- Erwig, Guting, et al.
- 1998
(Show Context)
Citation Context ...orts a more integrated view of space and time and incorporates the treatment of continuous spatial changes. It will be the basis of this paper and introduces the concept of spatio-temporal data types =-=[15, 16]-=-. These data types are designed as abstract data types whose values can be integrated as complex entities into databases [36, 35] and whose definition and integration into databases is independent of ... |

37 | Developments in spatio-temporal query languages
- Erwig, Schneider
- 1999
(Show Context)
Citation Context .... The concepts for spatio-temporal predicates and developments presented in the following sections have already been used in two different but related applications. The first application described in =-=[18]-=- relates to the identification of an important new class of spatio-temporal queries which is concerned with developments of spatial objects over time. This means queries ask especially for changes in ... |

36 |
A Temporal Data Model Based on Time Sequences, chapter 11
- Segev, Shoshani
- 1993
(Show Context)
Citation Context ... approach has been to appropriately extend a temporal data model based on attribute timestamps by spatial concepts. In contrast to tuple timestamped models, attribute timestamped models (described in =-=[8, 9, 24, 34]-=-, for example) aim at gathering information about an object in one tuple and allow complex attribute values. These complex values incorporate the temporal dimension and are frequently modeled as funct... |

34 | Spatio-Temporal Database Support For Legacy Applications
- Bohlen, Jensen, et al.
- 1998
(Show Context)
Citation Context ...mestamped models have the potential to fit very well with our purposes. Examples of temporal models integrating spatial aspects include variants of Gadia's temporal model [24], which are described in =-=[6, 5]-=-. A third approach has been to use linear constraints for modeling spatio-temporal data [27]. This model allows to efficiently represent and manipulate infinite point sets in arbitrary dimension. But ... |

34 |
Inclusion of New Types in Relational Database Systems
- Stonebraker
- 1986
(Show Context)
Citation Context ...of this paper and introduces the concept of spatio-temporal data types [15, 16]. These data types are designed as abstract data types whose values can be integrated as complex entities into databases =-=[36, 35]-=- and whose definition and integration into databases is independent of a particular DBMS data model. The definition of a temporal object [22] in general is motivated by the observation that anything t... |

34 | Functional programming with graphs.
- Erwig
- 1997
(Show Context)
Citation Context ...n how developments of spatial objects can be concisely expressed by building 3 This number has been determined by a small Haskell program on the basis of a graph library developed by the first author =-=[15]-=-. REFERENCES 35 sequences of elementary spatio-temporal and spatial predicates. The compositional design of the framework encourages the modular, structured, and step-by-step creation of complex predi... |

29 | Towards a qualitative theory of movement
- Galton
- 1995
(Show Context)
Citation Context ...ta types including a comprehensive collection of spatio-temporal operations [16]. Nevertheless, behavioral time sequences could be used as one possible representation for our temporal objects. Galton =-=[25, 26]-=- stresses continuity as an important feature of movement. His goal is to devise a framework for formalizing common-sense knowledge of the world, and he particularly focuses on how continuity fits into... |

26 | Cambray, Modeling Highly Variable Spatio-Temporal Data
- Yeh, de
- 1995
(Show Context)
Citation Context ..., a region or a point. We will use this view for a comparison of topological predicates on spatio-temporal objects with those on 3D objects (see Sections 2.2, 3.2, and 5). Similar to our approach, in =-=[42, 43]-=- so-called behavioral time sequences have been introduced which are based on the work in [34]. Each element of such a sequence contains a geometric value, a date, and a behavioral function; the latter... |

24 |
Heterogeneous visual languages: Integrating visual and textual programming.
- Erwig, Meyer
- 1995
(Show Context)
Citation Context ...ed directly as a visual query interface to spatio-temporal databases, or it can provide predicate specifications that can be integrated into textual query languages leading to heterogeneous languages =-=[17]-=-. 2.3 Logic-Based Approaches An obvious approach to deal with temporal predicates is to employ concepts of temporal logic. We will first mention some related work and afterwards explain why we will ta... |

24 |
Cambray, Time as a Geometric Dimension for Modeling the Evolution of Entities: A
- Yeh, de
- 1993
(Show Context)
Citation Context ..., a region or a point. We will use this view for a comparison of topological predicates on spatio-temporal objects with those on 3D objects (see Sections 2.2, 3.2, and 5). Similar to our approach, in =-=[42, 43]-=- so-called behavioral time sequences have been introduced which are based on the work in [34]. Each element of such a sequence contains a geometric value, a date, and a behavioral function; the latter... |

23 | A pattern matching language for spatio-temporal databases
- Cheng, Gadia
- 1994
(Show Context)
Citation Context ...mestamped models have the potential to fit very well with our purposes. Examples of temporal models integrating spatial aspects include variants of Gadia's temporal model [24], which are described in =-=[6, 5]-=-. A third approach has been to use linear constraints for modeling spatio-temporal data [27]. This model allows to efficiently represent and manipulate infinite point sets in arbitrary dimension. But ... |

23 |
The Historical Relational Data Model (HRDM) Revisited
- Clifford, Croker
- 1993
(Show Context)
Citation Context ... approach has been to appropriately extend a temporal data model based on attribute timestamps by spatial concepts. In contrast to tuple timestamped models, attribute timestamped models (described in =-=[8, 9, 24, 34]-=-, for example) aim at gathering information about an object in one tuple and allow complex attribute values. These complex values incorporate the temporal dimension and are frequently modeled as funct... |

18 | Temporal Objects for Spatio-Temporal Data Models and a Comparison of Their Representations
- Erwig, Schneider, et al.
- 1998
(Show Context)
Citation Context ...s can be integrated as complex entities into databases [36, 35] and whose definition and integration into databases is independent of a particular DBMS data model. The definition of a temporal object =-=[22]-=- in general is motivated by the observation that anything that changes over time can be expressed as a function over time. A temporal version of an object of type ff is then given by a function from t... |

17 |
Inclusion of New Types
- Stonebraker
- 1986
(Show Context)
Citation Context ...paper and introduces the concept of spatio-temporal data types [15], [16]. These data types are designed as abstract data types whose values can be integrated as complex entities into databases [36], =-=[35]-=- and whose definition and integration into databases is independent of a particular DBMS data model. The definition of a temporal object [22] in general is motivated by the observation that anything t... |

15 | Query-by-trace: Visual predicate specification in spatio-temporal databases
- Erwig, Schneider
- 2000
(Show Context)
Citation Context ... realized in a relational model and how SQL can be appropriately extended to a spatio-temporal query language called STQL to enable the querying of developments. 3 The second application described in =-=[20, 21]-=- deals with the user's problem of comfortably specifying temporally changing topological situations and predicates. For this purpose, we have proposed a visual language which extends existing concepts... |

15 | Qualitative and topological relationships,
- Cui, Cohn, et al.
- 1993
(Show Context)
Citation Context ...ime intervals and not on time points. Galton [25] has extended Allen's approach to the treatment of temporally changing topological relationships. Topological relationships are based on the RCC model =-=[10]-=-, [31] which comes to similar results as Egenhofer's 9-intersection model. In contrast to Allen, Galton also takes time points into account, as we do. In specifying changes of spatial situations, he u... |

14 |
Definitions of Line-Line Relations for Geographic Databases
- Egenhofer
- 1994
(Show Context)
Citation Context ...edicates called equal, disjoint, coveredBy, covers, overlap, meet, inside, and contains. For a line and a region 19 topological relationships [14] can be distinguished. For two lines 33 relationships =-=[11]-=- can be found. For a point and a region we obtain the three predicates disjoint, meet, and inside. For two points we get the two predicates disjoint and meet (which corresponds to equality). For each ... |

13 |
On the Completeness of Query Languages for Grouped and Ungrouped Historical Data Models
- Clifford, Croker, et al.
- 1993
(Show Context)
Citation Context |

13 | M.: Visual Specification of SpatioTemporal Developments
- Erwig, Schneider
- 1999
(Show Context)
Citation Context ... realized in a relational model and how SQL can be appropriately extended to a spatio-temporal query language called STQL to enable the querying of developments. 3 The second application described in =-=[20, 21]-=- deals with the user's problem of comfortably specifying temporally changing topological situations and predicates. For this purpose, we have proposed a visual language which extends existing concepts... |

10 | The Honeycomb Model for Spatio-Temporal Partitions
- Erwig, Schneider
- 1999
(Show Context)
Citation Context ... spatial objects possibly satisfying some constraints over time. For example, an approach to modeling spatiotemporal partitions for describing the temporal evolution of maps has already been given in =-=[19]-=-. 2.2 Spatio-Temporal Predicates In the past, topological relationships like meet, overlap, or inside between point, line, and region features in the (especially two-dimensional) Euclidean space have ... |

9 |
Specifications for Efficient Indexing
- Theodoridis, Sellis, et al.
- 1998
(Show Context)
Citation Context ...bitemporal complexes. Their spatial features are described by simplicial complexes, and their temporal features are given by bitemporal elements attached to all components of simplicial complexes. In =-=[39]-=-, in a discrete snapshot model, a spatio-temporal object o is given as a time-evolving spatial object, that is, its evolution is represented by a set of triples …o id; si;ti†, where o id is the object... |

8 |
Continous change in spatial regions
- Galton
- 1997
(Show Context)
Citation Context ...ta types including a comprehensive collection of spatio-temporal operations [16]. Nevertheless, behavioral time sequences could be used as one possible representation for our temporal objects. Galton =-=[25, 26]-=- stresses continuity as an important feature of movement. His goal is to devise a framework for formalizing common-sense knowledge of the world, and he particularly focuses on how continuity fits into... |

8 |
A Temporal Data Model Based on Time
- Segev, Shoshani
(Show Context)
Citation Context ...n to appropriately extend a temporal data model based on attribute timestamps by spatial concepts. In contrast to tuple timestamped models, attribute time-stamped models (described in [8], [9], [24], =-=[34]-=-, for example) aim at gathering information about an object in one tuple and allow complex attribute values. These complex values incorporate the temporal dimension and are frequently modeled as funct... |

7 |
ªMaintaining Knowledge about Temporal Intervals,º
- Allen
- 1983
(Show Context)
Citation Context ...oral predicates is to employ concepts of temporal logic. We will first mention some related work and afterward explain why we will take a partly different approach in this paper. Based on his work in =-=[1]-=- where he has identified 13 possible relationships (like before, equal, meets, overlaps, during) between intervals, Allen in [2] defines a predicate Holds…p; i† which asserts that a property p is true... |

5 |
A Unified Model of Spatial and Temporal Informaiton
- Worboys
- 1994
(Show Context)
Citation Context ...ch. 2.1 Spatio-Temporal Objects So far, only a few data models for spatio-temporal data have been proposed. One approach has been to appropriately extend a spatial data model by temporal concepts. In =-=[41]-=-, spatio-temporal objects are defined as so-called spatio-bitemporal complexes. Their spatial features are described by simplicial complexes, and their temporal features are given by bitemporal elemen... |

3 |
ªTowards a General Theory of Action and Time,º
- Allen
- 1984
(Show Context)
Citation Context ...ll take a partly different approach in this paper. Based on his work in [1] where he has identified 13 possible relationships (like before, equal, meets, overlaps, during) between intervals, Allen in =-=[2]-=- defines a predicate Holds…p; i† which asserts that a property p is true during a time interval i. This predicate implies that p holds at every subinterval of i as well. Logical operators like Boolean... |

3 |
ªPoint-Set Topological Spatial Relations,º Int'l
- Egenhofer, Franzosa
- 1991
(Show Context)
Citation Context ...n features in the (especially two-dimensional) Euclidean space have been intensively studied in the literature. Using point sets and point set topology as a formal framework, the 9-intersection model =-=[13]-=-, [7] provides a canonical collection of topological predicates for each combination of spatial types. Based on the nine topologically invariant intersections of boundaries, interiors, and exteriors o... |

2 |
Oosterom, ªA Small Set of Formal Topological Relationships Suitable for End-User Interaction,º
- Clementini, Felice, et al.
- 1993
(Show Context)
Citation Context ...ures in the (especially two-dimensional) Euclidean space have been intensively studied in the literature. Using point sets and point set topology as a formal framework, the 9-intersection model [13], =-=[7]-=- provides a canonical collection of topological predicates for each combination of spatial types. Based on the nine topologically invariant intersections of boundaries, interiors, and exteriors of the... |

2 |
The Historical Relational Data Model (HRDM
- Cliord, Croker
- 1993
(Show Context)
Citation Context ...approach has been to appropriately extend a temporal data model based on attribute timestamps by spatial concepts. In contrast to tuple timestamped models, attribute time-stamped models (described in =-=[8]-=-, [9], [24], [34], for example) aim at gathering information about an object in one tuple and allow complex attribute values. These complex values incorporate the temporal dimension and are frequently... |

2 |
ªThematic Map Modeling,º
- Scholl, Voisard
- 1989
(Show Context)
Citation Context ...n have turned out to be a fundamental abstraction for modeling the twodimensional structure of geometric entities, their properties, relationships, and operations (see, for example, [28], [30], [32], =-=[33]-=-, [37]). Points are elements of the Euclidean plane. Lines are two-dimensional curves. Regions describe point sets with a two-dimensional extent and are bounded by lines which in this context are call... |

1 |
ªSpatio-Temporal Database Support for Legacy Applications,º
- BoÈhlen, Jensen, et al.
- 1998
(Show Context)
Citation Context ...mped models have the potential to fit very well with our purposes. Examples of temporal models integrating spatial aspects include variants of Gadia's temporal model [24], which are described in [6], =-=[5]-=-. A third approach has been to use linear constraints for modeling spatio-temporal data [27]. This model allows us to efficiently represent and manipulate infinite point sets in arbitrary dimension. B... |

1 |
ªDefinitions of Line-Line Relations for Geographic Databases,º
- Egenhofer
- 1993
(Show Context)
Citation Context ...icates called equal, disjoint, coveredBy, covers, overlap, meet, inside, and contains. For a line and a region, 19 topological relationships [14] can be distinguished. For two lines, 33 relationships =-=[11]-=- can be found. For a point and a region, we obtain the three predicates disjoint, meet, and inside. For two points, we get the two predicates disjoint and meet (which corresponds to equality). For eac... |

1 |
ªHeterogeneous Visual LanguagesÐIntegrating Visual and Textual
- Erwig, Meyer
- 1995
(Show Context)
Citation Context ...ed directly as a visual query interface to spatio-temporal databases, or it can provide predicate specifications that can be integrated into textual query languages leading to heterogeneous languages =-=[17]-=-. 2.3 Logic-Based Approaches An obvious approach for dealing with temporal predicates is to employ concepts of temporal logic. We will first mention some related work and afterward explain why we will... |

1 |
ªDevelopments in Spatio-Temporal Query Languages,º
- Erwig, Schneider
- 1999
(Show Context)
Citation Context .... The concepts for spatio-temporal predicates and developments presented in the following sections have already been used in two different but related applications. The first application described in =-=[18]-=- relates to the identification of an important new class of spatio-temporal queries which is concerned with developments of spatial objects over time. This means queries ask especially for changes in ... |

1 |
ªVisual Specifications of SpatioTemporal Developments,º
- Erwig, Schneider
- 1999
(Show Context)
Citation Context ...be realized in a relational model and how SQL can be appropriately extended to a spatio-temporal query language called STQL to enable the querying of developments. The second application described in =-=[20]-=-, [21] deals with the user's problem of comfortably specifying temporally changing topological situations and predicates. For this purpose, we have proposed a visual language which extends existing co... |

1 |
ªQuery-By-Trace: Visual Predicate Specification
- Erwig, Schneider
- 2000
(Show Context)
Citation Context ...lized in a relational model and how SQL can be appropriately extended to a spatio-temporal query language called STQL to enable the querying of developments. The second application described in [20], =-=[21]-=- deals with the user's problem of comfortably specifying temporally changing topological situations and predicates. For this purpose, we have proposed a visual language which extends existing concepts... |

1 |
GuÈ ting, ªTemporal Objects for Spatio-Temporal Data Models and a Comparison of Their Representations,º
- Erwig, Schneider, et al.
- 1998
(Show Context)
Citation Context ...can be integrated as complex entities into databases [36], [35] and whose definition and integration into databases is independent of a particular DBMS data model. The definition of a temporal object =-=[22]-=- in general is motivated by the observation that anything that changes over time can be expressed as a function over time. A temporal version of an object of type is then given by a function from time... |

1 |
ªTemporal Databases: A Prelude to Parametric Data,º Temporal Databases: Theory, Design, and Implementation
- Gadia, Nair
- 1993
(Show Context)
Citation Context ...as been to appropriately extend a temporal data model based on attribute timestamps by spatial concepts. In contrast to tuple timestamped models, attribute time-stamped models (described in [8], [9], =-=[24]-=-, [34], for example) aim at gathering information about an object in one tuple and allow complex attribute values. These complex values incorporate the temporal dimension and are frequently modeled as... |

1 |
ªTowards a Qualitative Theory of Movement,º
- Galton
- 1995
(Show Context)
Citation Context ...ta types, including a comprehensive collection of spatiotemporal operations [16]. Nevertheless, behavioral time sequences could be used as one possible representation for our temporal objects. Galton =-=[25]-=-, [26] stresses continuity as an important feature of movement. His goal is to devise a framework for formalizing common-sense knowledge of the world, and he particularly focuses on how continuity fit... |

1 |
ªContinuous Change in Spatial Regions,º
- Galton
- 1997
(Show Context)
Citation Context ...es, including a comprehensive collection of spatiotemporal operations [16]. Nevertheless, behavioral time sequences could be used as one possible representation for our temporal objects. Galton [25], =-=[26]-=- stresses continuity as an important feature of movement. His goal is to devise a framework for formalizing common-sense knowledge of the world, and he particularly focuses on how continuity fits into... |

1 |
ªSpatio-Temporal Data Handling with Constraints,º
- Grumbach, Rigaux, et al.
- 1998
(Show Context)
Citation Context ...els integrating spatial aspects include variants of Gadia's temporal model [24], which are described in [6], [5]. A third approach has been to use linear constraints for modeling spatio-temporal data =-=[27]-=-. This model allows us to efficiently represent and manipulate infinite point sets in arbitrary dimension. But, in [27], time and geometry are treated as different and independent categories of data. ... |

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ªGeo-Relational Algebra: A Model and Query Language for Geometric Database Systems,º
- ting
- 1988
(Show Context)
Citation Context ...t, line, and region have turned out to be a fundamental abstraction for modeling the twodimensional structure of geometric entities, their properties, relationships, and operations (see, for example, =-=[28]-=-, [30], [32], [33], [37]). Points are elements of the Euclidean plane. Lines are two-dimensional curves. Regions describe point sets with a two-dimensional extent and are bounded by lines which in thi... |

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ªA Foundation for Representing and Querying Moving Objects,º
- ting, BoÈhlen, et al.
- 2000
(Show Context)
Citation Context ...time-dependent) distance of an airplane and a storm. This could be achieved by an operation: Distance : …point† …region†! …real†: This example demonstrates the important principle of temporal lifting =-=[29]-=- in avoiding an inflation of operation definitions: We can, in principle, take almost any flat (that is, nontemporal) operation and ªliftº it so that it works on temporal objects returning also a temp... |

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Spatial Data Types for Database SystemsÐFinite Resolution Geometry for Geographic Information Systems
- Schneider
- 1997
(Show Context)
Citation Context ... region have turned out to be a fundamental abstraction for modeling the twodimensional structure of geometric entities, their properties, relationships, and operations (see, for example, [28], [30], =-=[32]-=-, [33], [37]). Points are elements of the Euclidean plane. Lines are two-dimensional curves. Regions describe point sets with a two-dimensional extent and are bounded by lines which in this context ar... |

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ªApplication of Abstract Data Types and Abstract Indices to
- Stonebraker, Rubenstein, et al.
- 1983
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Citation Context ... this paper and introduces the concept of spatio-temporal data types [15], [16]. These data types are designed as abstract data types whose values can be integrated as complex entities into databases =-=[36]-=-, [35] and whose definition and integration into databases is independent of a particular DBMS data model. The definition of a temporal object [22] in general is motivated by the observation that anyt... |

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Cambray, ªTime as a Geometric Dimension for Modeling the Evolution of Entities: A
- Yeh, de
- 1993
(Show Context)
Citation Context ..., a region or a point. We will use this view for a comparison of topological predicates on spatio-temporal objects with those on 3D objects (see Sections 2.2, 3.2, and 5). Similar to our approach, in =-=[42]-=-, [43], so-called behavioral time sequences have been introduced which are based on the work in [34]. Each element of such a sequence contains a geometric value, a date, and a behavioral function; the... |

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Cambray, ªModeling Highly Variable SpatioTemporal Data,º
- Yeh, de
- 1995
(Show Context)
Citation Context ...gion or a point. We will use this view for a comparison of topological predicates on spatio-temporal objects with those on 3D objects (see Sections 2.2, 3.2, and 5). Similar to our approach, in [42], =-=[43]-=-, so-called behavioral time sequences have been introduced which are based on the work in [34]. Each element of such a sequence contains a geometric value, a date, and a behavioral function; the latte... |