Rdf Graph Visualization Tools
AI3 Assembles 26 Candidate Tools The pending UMBEL subject concept “backbone” ontology will involve literally thousands of concepts. In order to manage and view. Paged Graph Visualization (PGV) [36] utilizes a Ferris-Wheel approach to display nodes with high degree. RDF graph visualizer [115] adopts a node-centric approach to visualize RDF graphs. Rather than trying to visualize the whole graph, nodes of interest (i.e., staring nodes) are discovered by searching over nodes labels. Articles by Mike Bergman on the semantic Web, adaptive information, adaptive innovation and adaptive infrastructure.
I want to find some great tools or styles to visualize my RDF data so that it can give viewers a shock when they access the RDF data.
The problem is that the visualization tools I get now can just generate some simple styles (node,edge...) like below:
They look ugly because edges take up too many spaces and nodes are too small.I don't think this kind of graphs can give viewers any different experiences from viewing sheets or tables directly.
I want to know if there are any new visualization tools or just styles that can give users really different experiences so that they can feel how invaluable linked data are...
Any suggestions or recommendations?
Stanislav Kralinclosed as off-topic by Jimbo, khr055, explunit, Jim Garrison, Mario SannumAug 15 '13 at 20:35
This question appears to be off-topic. The users who voted to close gave this specific reason:
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3 Answers
By far the best RDF linked open data visualization tool that I've come across is LodLive:http://en.lodlive.it/
Rdf Graph Visualization Tools
It knows of numerous SPARQL endpoints, including DBpedia.
I've previously implemented a web based RDF authoring tool that hooks into it: https://github.com/robstewart57/discover-me-semantically .
i am looking for pretty much the same thing. lots of googling, and reading of phd articles, lead me to a few possibilities.
definitely would be interested in whatever others may have found, or are using.
Wayne WeibelWayne WeibelI'm looking for the same thing. All I can find after hours of searching are just plain circles and node connected by dull lines. I came however upon this tool which seems to be rather advanced in displaying RDF information. I haven't looked deep into it yet, but it looks promising:
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Developer(s) | Oracle Corporation |
---|---|
Stable release | |
Operating system | Cross-platform |
Available in | English |
Type | GIS and Graph Database |
License | Proprietary |
Website | Official website |
Oracle Spatial and Graph, formerly Oracle Spatial, forms a separately-licensed option component of the Oracle Database. The spatial features in Oracle Spatial and Graph aid users in managing geographic and location-data in a native type within an Oracle database, potentially supporting a wide range of applications — from automated mapping, facilities management, and geographic information systems (AM/FM/GIS), to wireless location services and location-enabled e-business. The graph features in Oracle Spatial and Graph include Oracle Network Data Model (NDM) graphs used in traditional network applications in major transportation, telcos, utilities and energy organizations and RDF semantic graphs used in social networks and social interactions and in linking disparate data sets to address requirements from the research, health sciences, finance, media and intelligence communities.
- 1Components
Components[edit]
The geospatial feature of Oracle Spatial and Graph provides a SQLschema and functions that facilitate the storage, retrieval, update, and query of collections of spatial features in an Oracle database. (The spatial component of a spatial feature consists of the geometric representation of its shape in some coordinate space — referred to as its 'geometry'.)
Geospatial data features[edit]
The Oracle Spatial geospatial data features consist of:
- a schema - MDSYS (as in 'multi-dimensional system'[1]) - that prescribes the storage, syntax, and semantics of supported geometricdata types[2]
- a spatial indexing system
- operators, functions, and procedures for performing area-of-interest queries, spatial join queries, and other spatial analysis operations
- functions and procedures for utility and tuning operations
- vector performance acceleration for substantially faster querying and more efficient use of CPU, memory, and partitioning[citation needed]
- support for parametric curves (NURBS) for mathematically precise representation of free-form curves that can be reproduced exactly for 2D and 3D data
- a topologydata model for working with data about nodes, edges, and faces in a topology
- a GeoRaster feature to store, index, query, analyze, and deliver GeoRaster data (raster image and gridded data and its associated metadata) with virtual mosaics, raster-algebra operations, image processing, Java API, and GDAL-Based ETL Wizard
- 3-dimensional or 'SDO' for Oracle 7. (The SDO_ prefix continues in use within Oracle Spatial implementations.) The spatial indexing system for SDO involved an adaptation of Riemannianhypercube, or HHCode, as developed by CHS and implemented by Oracle Spatial, comprises a form of space-filling curve.
With Oracle 8, Oracle Corporation marketing dubbed the spatial extension simply 'Oracle Spatial'. The primary spatial indexing system no longer uses the HHCode, but a standard r-tree index.
Since July, 2012, the option has been named Oracle Spatial and Graph to highlight the graph database capabilities in the product - Network Data Model graph introduced with Oracle Database 10g Release 1 and RDF Semantic Graph introduced with Oracle Database 10g Release 2.
Further reading[edit]
- Albert Godfrind, Richard Pitts, Hans Viehmann, Ravikanth Kothuri. Pro Oracle Spatial for Oracle Database 12c. Apress (2015) ISBN978-1-4302-6313-5
- Simon Greener, Siva Ravada. Applying and Extending Oracle Spatial. Packt Publishing (2013) ISBN184968636X
- Euro Beinat, Albert Godfrind & Ravikanth V. Kothuri. Pro Oracle Spatial for Oracle Database 11g. Apress (2007) ISBN1-59059-899-7
- Euro Beinat, Albert Godfrind & Ravikanth V. Kothuri. Pro Oracle Spatial. Apress (2004) ISBN1-59059-383-9
See also[edit]
- OGR – The OGR Simple Feature Library is an open source interface to Oracle Spatial data
References[edit]
Oracle Documentation Library http://www.oracle.com/pls/db121/portal.portal_db?selected=7&frame= See:
- Spatial and Graph Developer's Guide
- Spatial and Graph GeoRaster Developer's Guide
- Spatial and Graph Topology Data Model and Network Data Model Graph Developer's Guide
- Spatial and Graph Java API Reference (Javadoc)
- Spatial and Graph RDF Semantic Graph Developer's Guide
Notes[edit]
- ^Greener, Simon Gerard; Ravada, Siva (2013). '1. Defining a Data Model for Spatial Data Storage'. Applying and Extending Oracle Spatial. Birmingham: Packt Publishing Ltd. ISBN9781849686372. Retrieved 2017-05-19.
Oracle Spatial mainly consists of the following: [...] A schema (MDSYS derived from Multi-Dimensional System) that defines the storage, syntax, and semantics of the supported geometric (both vector and raster) data types [...]
- ^Cyran, Michele (2005). 'Oracle Database Concepts, 10g Release 2 (10.2)'. docs.oracle.com. Oracle Corporation. Retrieved 2016-07-05.
Spatial consists of the following: [...] A schema (MDSYS) that prescribes the storage, syntax, and semantics of supported geometric datatypes [...]
- ^Westra, Erik (2013) [2010]. Python Geospatial Development (2 ed.). Packt Publishing Ltd. ISBN9781782161530. Retrieved 2015-02-16.
A subset of the Oracle Spatial functionality, called Oracle Locator, is available for the Standard edition of the Oracle database. Oracle Locator does not support common operations such as unions and buffers, intersections, area and length calculations. It also excludes support for more advanced features such as linear referencing systems, spatial analysis functions, geocoding, and raster format data.
External links[edit]
- http://www.oracle.com/technetwork/database-options/spatialandgraph/overview/index.html – Oracle Corporation's official website
- http://fdo.osgeo.org/fdooracle/index.html – Open Source FDO interface to Oracle Spatial data