Strabon

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author Kostis Kyzirakos <kkyzir@di.uoa.gr>
date Mon Jul 23 12:40:55 2012 +0300 (2012-07-23)
parents 7c16c1e29945
children 6c155d83168c
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1 Strabon
2 -----------
4 Introduction
5 ============
6 Strabon is a fully implemented semantic geospatial database system that can be
7 used to store linked geospatial data expressed in RDF and query them using an
8 extension of SPARQL. Strabon supports spatial selections, spatial joins, a rich
9 set of spatial functions similar to those offered by geospatial relational
10 database systems, support for multiple Coordinate Reference Systems and widely
11 used serializations for geometric objects such as WKT and GML. Strabon is built
12 on top of the well-known RDF store Sesame and extends Sesame’s components to be
13 able to manage thematic and spatial data that are stored in PostGIS.
15 The development of Strabon started in the context of European FP7 project
16 SemsorGrid4Env (Semantic Sensor Grids for Rapid Application Development for
17 Environmental Management) [http://www.semsorgrid4env.eu/]. Starting September
18 2011, Strabon is being utilized and extended with new functionalities in the
19 FP7 project TELEIOS (Virtual Observatory Infrastructure for Earth Observation
20 Data) [http://www.earthobservatory.eu/] which our group leads.
22 The query language of Strabon is called stSPARQL. stSPARQL can be used to query
23 data represented in an extension of RDF called stRDF. stRDF and stSPARQL have
24 been designed for representing and querying geospatial data that changes over
25 time (e.g., the growth of a city over the years due to new developments).
27 Currently, only the geospatial features of stSPARQL have been implemented fully.
28 The temporal features are the subject of current work.
31 Strabon Homepage
32 ================
33 The homepage of Strabon is at http://www.strabon.di.uoa.gr/.
36 Demo
37 ====
38 You can find a demo of the system Strabon at http://test.strabon.di.uoa.gr/NOA/.
41 Getting Started
42 ===============
43 To get started with Strabon please have a look at the tutorial for the stRDF
44 data model and stSPARQL query language, the User Guide, and the Developer Guide.
46 stRDF and stSPARQL tutorial
47 http://www.strabon.di.uoa.gr/files/stSPARQL_tutorial.pdf
49 User Guide
50 ~~~~~~~~~~
51 Assuming that you are familiar with Maven, the following steps need to be
52 followed in order to use Strabon using Eclipse:
54 1. Install PostgreSQL from http://www.postgresql.org/download/. At the time of
55 this writing the latest PostgreSQL version is 9.1.
56 2. Install PostGIS from http://postgis.refractions.net/download/. At the time of
57 this writing we have tested Strabon with PostGIS 1.5.3.
58 3. Install Maven from http://maven.apache.org/download.html. At the time of this
59 writing the latest Maven version is 3.0.4.
60 4. Install Eclipse from http://www.eclipse.org/downloads/. At the time of this
61 writing the latest Eclipse version is 3.7.2.
62 5. Install the m2e plugin for Eclipse from http://www.eclipse.org/m2e/.
63 6. Install the MercurialEclipse plugin for Eclipse from
64 http://javaforge.com/project/HGE .
65 7. From Eclipse, go to File --> Import --> Mercurial --> Clone Existing
66 Mercurial Repository --> Next. In the URL textarea paste the following
67 URL: http://hg.strabon.di.uoa.gr/StrabonUser and then press Next --> Next -->
68 Finish. If you used the default settings, you should have a new project named
69 StrabonMain. Right click on the project and select Configure --> Convert to
70 Maven project. Eclipse will enable Maven dependency management for the
71 project, download any dependencies and build the project.
74 Storing stRDF graphs and evaluating stSPARQL queries
75 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
76 You can see some examples in the classes gr.uoa.di.strabon.example.PostgisExample
77 and gr.uoa.di.strabon.example.PostgisExample2.
80 Developer Guide
81 ~~~~~~~~~~~~~~~
82 Assuming that you are familiar with Maven, the following steps need to be
83 followed in order to use Strabon using Eclipse:
85 1. Install PostgreSQL from http://www.postgresql.org/download/. At the time of
86 this writing the latest PostgreSQL version is 9.1.
87 2. Install PostGIS from http://postgis.refractions.net/download/. At the time of
88 this writing we have tested Strabon with PostGIS 1.5.3.
89 3. Install Maven from http://maven.apache.org/download.html. At the time of this
90 writing the latest Maven version is 3.0.4.
91 4. Install Eclipse from http://www.eclipse.org/downloads/. At the time of this
92 writing the latest Eclipse version is 3.7.2.
93 5. Install the m2e plugin for Eclipse from http://www.eclipse.org/m2e/.
94 6. Install the MercurialEclipse plugin for Eclipse from
95 http://javaforge.com/project/HGE.
96 7. From Eclipse, go to File --> Import --> Mercurial --> Clone Existing
97 Mercurial Repository --> Next. In the URL textarea paste the following
98 URL: http://hg.strabon.di.uoa.gr/Strabon and then press Next --> Next -->
99 Finish. If you used the default settings, you should have a new project named
100 StrabonMain. Right click on the project and select Configure --> Convert to
101 Maven project. Eclipse will enable Maven dependency management for the
102 project, download any dependencies and build the project.
105 Storing stRDF graphs and evaluating stSPARQL queries
106 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
107 You can see some examples in the classes
108 eu.earthobservatory.runtime.postgis.StoreOp and
109 eu.earthobservatory.runtime.postgis.QueryOp.
112 Download
113 ========
114 You can download the source code of the latest version of Strabon by accessing
115 our public mercurial repository located at http://hg.strabon.di.uoa.gr/Strabon.
116 You can find more information on how to use and extend Strabon at the Getting
117 Started section.
120 Publications
121 ============
122 You can learn about stRDF data model and stSPARQL query language employed in
123 Strabon by reading our tutorial under the Getting Started section and/or the
124 publications given on this page.
126 The current versions of stRDF and stSPARQL which are based on OGC standards are
127 presented in the following document:
128 * Manolis Koubarakis, Kostis Kyzirakos, Babis Nikolaou, Michael Sioutis, and
129 Stavros Vassos. A data model and query language for an extension of RDF with
130 time and space. Deliverable D2.1, European ICT project TELEIOS, 2011.
131 [pdf: http://strabon.di.uoa.gr/files/deliv2-1-re-revised.pdf]
133 The initial versions of stRDF and stSPARQL that are based on constraint
134 databases are presented in the following publications:
135 * Manolis Koubarakis and Kostis Kyzirakos. Modeling and Querying Metadata in
136 the Semantic Sensor Web: the Model stRDF and the Query Language stSPARQL.
137 In 7th Extended Semantic Web Conference (ESWC 2010). Heraklion, Crete,
138 30 May - 03 June, 2010.
139 [pdf: http://strabon.di.uoa.gr/files/stSPARQL.pdf]
141 * Kostis Kyzirakos, Manos Karpathiotakis and Manolis Koubarakis. Developing
142 Registries for the Semantic Sensor Web using stRDF and stSPARQL (short
143 paper).
144 In Proceedings of 3rd International workshop on Semantic Sensor Networks
145 2010, in conjunction with ISWC 2010, November 2010, Shanghai, China.
146 [pdf: http://strabon.di.uoa.gr/files/strabon.pdf]
148 Applications of stRDF, stSPARQL, and the system Strabon are described here:
149 * Alasdair J. G. Gray, Raúl García-Castro, Kostis Kyzirakos, Manos
150 Karpathiotakis, Jean-Paul Calbimonte, Kevin Page, Jason Sadler, Alex
151 Frazer, Ixent Galpin, Alvaro A. A. Fernandes, Norman W. Paton, Oscar
152 Corcho, Manolis Koubarakis, David De Roure, Kirk Martinez and Asunción
153 Gómez-Pérez. A Semantically Enabled Service Architecture for Mashups over
154 Streaming and Stored Data. In 8th Extended Semantic Web Conference (ESWC
155 2011). Heraklion, Crete, May 20 - June 2, 2011.
156 [pdf: http://strabon.di.uoa.gr/files/Gray2011Architecture.pdf]
158 * A.J.G. Gray, J. Sadler, O. Kit, K. Kyzirakos, M. Karpathiotakis, J.-P.
159 Calbimonte, K. Page, R. García-Castro, A. Frazer, I. Galpin, A.A.A.
160 Fernandes, N.W. Paton, O. Corcho, M. Koubarakis, D.D. Roure, K. Martinez,
161 A. Gómez-Pérez. A Semantic Sensor Web for Environmental Decision Support
162 Applications. Sensors. 11, 8855-8887.
163 [pdf: http://strabon.di.uoa.gr/files/sensors-11-08855.pdf]
165 Coming up soon:
166 Strabon will soon support an extension of RDF for incomplete geospatial
167 information. The following publication gives a preview of the relevant research
168 problems:
169 * M. Koubarakis, K. Kyzirakos, M. Karpathiotakis, C. Nikolaou, M. Sioutis,
170 S. Vassos, D. Michail, T. Herekakis, C. Kontoes and I. Papoutsis. Challenges
171 for Qualitative Spatial Reasoning in Linked Geospatial Data. In Proceedings
172 of IJCAI 2011 Workshop on Benchmarks and Applications of Spatial Reasoning,
173 Barcelona, Spain.
174 [pdf: http://www.earthobservatory.eu/publications/SciQL_ADASS2011.pdf]
177 Contributors
178 ============
179 The system Strabon has been developed by the following members of our team:
181 * Manos Karpathiotakis <mk@di.uoa.gr>
182 * Kostis Kyzirakos <kkyzir@di.uoa.gr>
183 * Manolis Koubarakis <koubarak@di.uoa.gr>
184 * Giorgos Garbis <ggarbis@di.uoa.gr>
185 * Konstantina Bereta <konstantina.bereta@di.uoa.gr>
188 Mailing-list
189 ============
190 Currently, there is only a developers mailing-list, Strabon-devel, for support
191 and other questions concerning Strabon. To subscribe to the mailing-list, please
192 visit page http://cgi.di.uoa.gr/~mailman/listinfo/strabon-devel. To post e-mails
193 to Strabon-devel mailing-list, write to Strabon-devel@di.uoa.gr.
196 Bugs
197 ====
198 Please report bugs to http://bug.strabon.di.uoa.gr/report or
199 the Strabon-devel mailing-list Strabon-devel@di.uoa.gr.
202 License
203 =======
204 Copyright (C) 2010-2012 Strabon Team