Sciweavers

PVLDB
2010
135views more  PVLDB 2010»
13 years 9 months ago
SXPath - Extending XPath towards Spatial Querying on Web Documents
Querying data from presentation formats like HTML, for purposes such as information extraction, requires the consideration of tree structures as well as the consideration of spati...
Ermelinda Oro, Massimo Ruffolo, Steffen Staab
GIS
2010
ACM
13 years 10 months ago
Topological reasoning between complex regions in databases with frequent updates
Reasoning about space has been a considerable field of study both in Artificial Intelligence and in spatial information theory. Many applications benefit from the inference of ...
Arif Khan, Markus Schneider
GIS
2010
ACM
13 years 10 months ago
Evaluation of cardinal direction developments between moving points
Recently, a wide range of applications like hurricane research, fire management, navigation systems, and transportation, to name only a few, has shown increasing interest in mana...
Tao Chen, Hechen Liu, Markus Schneider
SOFTWARE
1998
13 years 11 months ago
A New Way to Query GISs on the Web
BMS organizes information in abstract name spaces and lets users refer to thedatathroughtheirvalues,whileaspatialDBMSorganizesinformationinconcrete 2D geometric spaces and lets use...
Serena Coetzee, Judith Bishop
AGIS
2000
95views more  AGIS 2000»
13 years 11 months ago
Error Detection through Consistency Checking
Following a brief discussion on various aspects of data quality, possible methods are examined for the detection of errors in a spatial database. Using examples, we introduce the c...
Peng Gong, Lan Mu
IJAR
2006
241views more  IJAR 2006»
13 years 11 months ago
Spatial reasoning under imprecision using fuzzy set theory, formal logics and mathematical morphology
In spatial reasoning, in particular for applications in image understanding, structure recognition and computer vision, a lot of attention has to be paid to spatial relationships ...
Isabelle Bloch
VLDB
1995
ACM
97views Database» more  VLDB 1995»
14 years 3 months ago
Similarity based Retrieval of Pictures Using Indices on Spatial Relationships
The paper presents (i) two similarity based methods for retrieval of pictures using indices on spatial relationships; (ii) efficient algorithms for the deduction and reduction of ...
A. Prasad Sistla, Clement T. Yu, Chengwen Liu, Kin...
GIR
2007
ACM
14 years 3 months ago
Eliciting concepts of place for text-based image retrieval
This paper describes research being employed in the Tripod project to improve the retrieval of photographs through a comprehensive knowledge of where they were taken. The methods ...
Alistair J. Edwardes, Ross S. Purves
UIST
1992
ACM
14 years 3 months ago
Interactive Shadows
It is often difficult in computer graphics applications to understand spatial relationships betweenobjects in a 3D sceneor effect changes to those objects without specialized visu...
Kenneth P. Herndon, Robert C. Zeleznik, Daniel C. ...
ISD
1999
Springer
262views Database» more  ISD 1999»
14 years 3 months ago
Spatial Pictogram Enhanced Conceptual Data Models and Their Translation to Logical Data Models
The successful development of any geographic information system project needs the careful design and implementation of spatial databases via conceptual and logical data-modeling. T...
Shashi Shekhar, Ranga Raju Vatsavai, Sanjay Chawla...