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Inconsistency Issues in Spatial Databases [chapter]

Andrea Rodríguez
2005 Lecture Notes in Computer Science  
In particular, it reviews types of inconsistency, specification of integrity constraints, and treatment of inconsistency in multiple representations and data integration.  ...  This chapter analyzes inconsistency issues in spatial databases.  ...  Like in traditional database systems, constraints at a conceptual and logical level in spatial databases are inherited by the implementation or physical level.  ... 
doi:10.1007/978-3-540-30597-2_8 fatcat:edougipvhveexkikdrkso47ud4

Solving the Sequential Ordering Problem with Automatically Generated Lower Bounds [chapter]

István T. Hernádvölgyi
2004 Operations Research Proceedings  
In one instance, it has proved a solution value to be optimal for an open problem while it also has matched best known solutions quickly for many unsolved problems from the TSPLIB.  ...  We use novel branch&bound search algorithms with lower bounds obtained from homomorphic abstractions of the original state space. Our method is asymptotically optimal.  ...  Holte (University of Alberta) for his insights and encouragement.  ... 
doi:10.1007/978-3-642-17022-5_46 fatcat:6wmorpiuv5hnlcugnwjhlddgqq

Aircraft Multidisciplinary Design Optimization Under Both Model and Design Variables Uncertainty

L. Jaeger, C. Gogu, S. Segonds, C. Bes
2013 Journal of Aircraft  
To reduce the number of calls to the computer code and to minimize the computation time, we chose to replace the constraints by surrogate models with a fast response time; these surrogate models provide  ...  This is what is done during conceptual design, in which all models are analytical models derived from either simplified physical models or simple regression models based on aircraft databases.  ... 
doi:10.2514/1.c031914 fatcat:hf52dmys6rc2tcltc5ecjhcrzy

Information retrieval through hybrid navigation of lattice representations

Claudio Carpineto, Giovanni Romano
1996 International Journal of Human-Computer Studies  
In this paper we present a comprehensive approach to automatic organization and hybrid navigation of text databases.  ...  Browsing and querying are used to search the retrieval space, bounding is used to restrict it based on the information that users have, or get during their interaction with the system.  ...  Acknowledgements We would like to thank three anonymous reviewers for many useful comments and suggestions.  ... 
doi:10.1006/ijhc.1996.0067 fatcat:6olji35nhbbk5edo5xgonxttny

GIS and Network Analysis [chapter]

Manfred M. Fischer
2004 Handbook of Transport Geography and Spatial Systems  
Constraints (18) and (19) define the flow conditions on the network, while time windows appear in constraint (20).  ...  In the soft time windows case the time window case can be violated at a cost.  ... 
doi:10.1108/9781615832538-022 fatcat:qbnfib6z5rhzdiwhwuc3uieedm

Approximate spatio-temporal retrieval

Dimitris Papadias, Nikos Mamoulis, Vasilis Delis
2001 ACM Transactions on Information Systems  
We then extend this model to various granularity levels and many dimensions, and show that reasoning on spatio-temporal structure is significantly facilitated in the new framework.  ...  Finally, we provide algorithms and optimization methods for four types of queries: (i) object retrieval based on some spatio-temporal relations with respect to a reference object, (ii) spatial joins, i.e  ...  ACKNOWLEDGMENTS We would like to thank Marios Mantzourogiannis for proofreading the paper.  ... 
doi:10.1145/366836.366874 fatcat:yggbxw4bl5hnnflsmt5fujddge

Query, Nearest Neighbor [chapter]

2017 Encyclopedia of GIS  
The quadtree tree is greatly used for two-dimensional space and the octree is used for three-dimensional space.  ...  The records exist in the leaf nodes of the tree. An octree is the same concept except the branches are in groups of eight. An octree can represent and image by subdividing the cubical volume.  ...  Consider, for instance, a window query where the window (and possibly the database objects) moves/changes with time.  ... 
doi:10.1007/978-3-319-17885-1_101046 fatcat:soumyguq4vgzrifipxdyb2wgeu


Andrew Frank, Hans-Jörg Schek, Michel Scholl, Timos Sellis, Babis Theodoulidis, Peter Widmayer, Stephane Grumbach, Ralf Hartmut Güting, Christian S. Jensen, Manolis Koubarakis, Nikos Lorentzos, Yannis Manolopoulos (+2 others)
1999 SIGMOD record  
This model is based on the linear constraint database model of DEDALE and the indefinite temporal constraint database model (ITCDB) previously proposed in [SK98b] .  ...  A significant effort in the area of models and languages deals with the use of constraint database models.  ... 
doi:10.1145/333607.333609 fatcat:jguia6jvvzbexj4zpe574bdiyu

Towards Integrating Heterogeneous Data: A Spatial DBMS Solution from a CRC-LCL Project in Australia

Wei Li, Sisi Zlatanova, Abdoulaye A. Diakite, Mitko Aleksandrov, Jinjin Yan
2020 ISPRS International Journal of Geo-Information  
Then, we tackle spatial data management problems in a Spatial Database Management System (SDBMS) solution for our defined unified model.  ...  Due to different spatial scale requirements for planning and managing various built environments, integration of Geographic Information Systems (GIS) and Building Information Modeling (BIM) has emerged  ...  Abbreviations The following abbreviations are used in this manuscript:  ... 
doi:10.3390/ijgi9020063 fatcat:5g3pcjotvfa5hf44rcjcr7534m

CASE Tool Support for Temporal Database Design [chapter]

Virginie Detienne, Jean-Luc Hainaut
2001 Lecture Notes in Computer Science  
About this paper Like for conventional databases, a temporal database design methodology must lead to correct and efficient databases. However, the design of even modest ones can be fairly  ...  Current RDBMS technology provides little support for building temporal databases.  ...  Credits Jeff Wijsen kindly reviewed our results and made several important suggestions to improve the models. Babis Theodoulidis and his staff, hosted O. Ramlot during his stay in UMIST, Manchester.  ... 
doi:10.1007/3-540-45581-7_17 fatcat:phsyw5kukjcrbkmh3iehkv43te

A Space-Time Network-Based Modeling Framework for Dynamic Unmanned Aerial Vehicle Routing in Traffic Incident Monitoring Applications

Jisheng Zhang, Limin Jia, Shuyun Niu, Fan Zhang, Lu Tong, Xuesong Zhou
2015 Sensors  
This paper presents a space-time network-based modeling framework for integrated fixed and mobile sensor networks, in order to provide a rapid and systematic road traffic monitoring mechanism.  ...  Several examples are used to demonstrate the results of proposed models in UAVs' route planning for small and medium-scale networks.  ...  " (No. 2014BAG01B02) in China.  ... 
doi:10.3390/s150613874 pmid:26076404 pmcid:PMC4507631 fatcat:ua3uubqc3jghpeptapowrhvnwy

Adding Temporal Constraints to XML Schema

Faiz A. Currim, Sabah A. Currim, Curtis E. Dyreson, Richard T. Snodgrass, Stephen W. Thomas, Rui Zhang
2012 IEEE Transactions on Knowledge and Data Engineering  
This paper describes how to interpret such constraints as sequenced constraints, applicable at each point in time.  ...  Our approach supports temporal documents that vary over both valid and transaction time, whose schema can vary over transaction time.  ...  Prior work in conceptual modeling for temporal databases has considered extensions to identity [24] and cardinality [25] constraints.  ... 
doi:10.1109/tkde.2011.74 fatcat:jg7pxybavrd3rc66osjtlslfv4

VizCraft: a problem-solving environment for aircraft configuration design

A. Goel, C.A. Baker, C.A. Shaffer, B. Grossman, W.H. Mason, L.T. Watson, R.T. Haftka
2001 Computing in science & engineering (Print)  
Individual designs can be (and are) viewed as points in a multidimensional design space.  ...  The conceptual-design stage determines and sets major design parameters for the final configuration.  ...  Acknowledgments This work was supported by NASA Grant NAG-2-1180, NSF Grant DMS-9625968, and AFOSR Grant F496320-99-1-0128.  ... 
doi:10.1109/5992.895188 fatcat:6jf7gtcs35fdfho2ul4c6jwqru

Efficient schemes for similarity-aware refinement of aggregation queries

Abdullah M. Albarrak, Mohamed A. Sharaf
2017 World wide web (Bussum)  
bound the search space and quickly find a refined query that meets users' expectations.  ...  and similarity constraints imposed on the refined query to maximize its overall benefit to the user.  ...  In particular, for a machine loaded with Intel Core i7 3.40GHz CPU, 16.0 GB RAM, and Windows 7 OS, Table 4 shows the time per probe for the different databases sizes.  ... 
doi:10.1007/s11280-017-0434-4 fatcat:efcn3kwkpjemzbisxhem5i3rgy

Structural SVM for visual localization and continuous state estimation

Catalin Ionescu, Liefeng Bo, Cristian Sminchisescu
2009 2009 IEEE 12th International Conference on Computer Vision  
We present an integrated model for visual object localization and continuous state estimation in a discriminative structured prediction framework.  ...  inputs (effectively an efficient form of object localization) and in the space of possible structured outputs, given those inputs.  ...  Acknowledgements: This research was supported, in part, by awards from the European Commission (MCEXT-025481) and NSF (IIS-0535140).  ... 
doi:10.1109/iccv.2009.5459346 dblp:conf/iccv/IonescuBS09 fatcat:2d32zjjcabdhpdaok6b4vraq2i
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