Difference between revisions of "Ontology of Perception"
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==Ontologies and Knowledge Bases== | ==Ontologies and Knowledge Bases== | ||
+ | <strong>Specification of Perception Cycle in Set Theory</strong> | ||
+ | [[Image:Set-theory.jpg|none|thumb|500px| Figure 4. Specification of Perception Cycle in Set Theory.]] | ||
+ | |||
<strong>Weather Background Knowledge</strong> | <strong>Weather Background Knowledge</strong> | ||
− | [[Image:bipartite_graph_black.jpg|none|thumb|600px| Figure | + | [[Image:bipartite_graph_black.jpg|none|thumb|600px| Figure 5. Weather Background Knowledge]] |
* [http://sonicbanana.cs.wright.edu/activeperception/ont/weather.owl Weather Background Knowledge] | * [http://sonicbanana.cs.wright.edu/activeperception/ont/weather.owl Weather Background Knowledge] | ||
* [http://wiki.knoesis.org/index.php/SSW_Datasets Observation Knowledge Base] | * [http://wiki.knoesis.org/index.php/SSW_Datasets Observation Knowledge Base] | ||
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<strong>25 miles (17 observers)</strong> | <strong>25 miles (17 observers)</strong> | ||
− | [[Image:25miles.jpg|none|thumb|600px| Figure | + | [[Image:25miles.jpg|none|thumb|600px| Figure 6. ]] |
<strong>50 miles (70 observers)</strong> | <strong>50 miles (70 observers)</strong> | ||
− | [[Image:50miles.jpg|none|thumb|600px| Figure | + | [[Image:50miles.jpg|none|thumb|600px| Figure 7. ]] |
<strong>100 miles (170 observers)</strong> | <strong>100 miles (170 observers)</strong> | ||
− | [[Image:100miles.jpg|none|thumb|600px| Figure | + | [[Image:100miles.jpg|none|thumb|600px| Figure 8. ]] |
<strong>200 miles (373 observers)</strong> | <strong>200 miles (373 observers)</strong> | ||
− | [[Image:200miles.jpg|none|thumb|600px| Figure | + | [[Image:200miles.jpg|none|thumb|600px| Figure 9. ]] |
<strong>400 miles (516 observers></strong> | <strong>400 miles (516 observers></strong> | ||
− | [[Image:400miles.jpg|none|thumb|600px| Figure | + | [[Image:400miles.jpg|none|thumb|600px| Figure 10. ]] |
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<strong>Grounded Percepts</strong> | <strong>Grounded Percepts</strong> | ||
− | [[Image:trend_grounded.jpg|none|thumb|600px| Figure | + | [[Image:trend_grounded.jpg|none|thumb|600px| Figure 11. ]] |
<strong>Extraneous Percepts</strong> | <strong>Extraneous Percepts</strong> | ||
− | [[Image:trend_extraneous.jpg|none|thumb|600px| Figure | + | [[Image:trend_extraneous.jpg|none|thumb|600px| Figure 12. ]] |
====Theories Generated during Evaluation==== | ====Theories Generated during Evaluation==== | ||
− | [[Image:trend_theory.jpg|none|thumb|600px| Figure | + | [[Image:trend_theory.jpg|none|thumb|600px| Figure 13. ]] |
Revision as of 17:34, 28 October 2010
Contents
Ontology of Perception: A Semantic Web Approach to Enhance Machine Perception
Today, many sensor networks and their applications employ a brute force approach to collecting and analyzing sensor data, and ignore the semantics inherent in the environmental data. Such an approach often wastes valuable resources – including both energy and computational resources – by unnecessarily tasking sensors and generating observations of minimal use. People, on the other hand, have evolved sophisticated mechanisms to efficiently perceive their environment. Such mechanisms include the use of background knowledge to determine what aspects of the environment to focus and a strong interdependent relationship between our ability to observe and perceive. In this paper, we develop an ontology of perception – derived from cognitive theory – that may be used to more efficiently convert observations into perceptions. We evaluate this approach by collecting and analyzing observations of weather conditions, and show up to 50% reduction in the number of observations necessary for analysis.
System Architecture
Perception Cycle
Perception Process
Observation Process
Ontologies and Knowledge Bases
Specification of Perception Cycle in Set Theory
Weather Background Knowledge
- Weather Background Knowledge
- Observation Knowledge Base
- Perception Ontology
- Perception Datasets:
Demonstrations
Statistics
Percepts Generated during Evaluation: # and %
(p = precipitation, t = temperature, w = wind speed)
25 miles (17 observers)
50 miles (70 observers)
100 miles (170 observers)
200 miles (373 observers)
400 miles (516 observers>
Percepts Generated during Evaluation: Trends
Grounded Percepts
Extraneous Percepts