====== Differences ====== This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
projects [2013/10/21 03:10] pszwed [Fuzzy Semantic Petri Nets] |
projects [2013/12/07 00:01] pszwed |
||
---|---|---|---|
Line 1: | Line 1: | ||
====== Projects ====== | ====== Projects ====== | ||
- | ===== Fuzzy Semantic Petri Nets ===== | + | ==INDECT== |
- | Fuzzy Semantic Petri Nets (FSPN) are Petri nets coupled with an underlying fuzzy ontology. | + | Informacje o projekcie: [[http://www.indect-project.eu/]] |
- | *The fuzzy ontology stores facts about a development of a certain complex event (or a process). They are expressed as fuzzy unary or binary relations between participating objects. The ontology ABox is updated with new observations. | + | Współautor raportów: |
- | *The Petri net defines a scenario of an event (or a process, if you like), its places correspond to the scenario steps | + | |
- | *Tokens in FSPN represent combinations of objects participating in the event. They are attributed with weights expressing likelihood of a scenario step occurrence | + | |
- | *Guards in FSPN are conjunctions of fuzzy predicates referencing the assertions in the coupled ontology | + | |
- | FSPN were applied to the problem of video event recognition. In the presented example an abandonned laguagge is correctly detected. (The event scenario and the dataset were published at [[http://www.cvg.rdg.ac.uk/PETS2006/|PETS 2006 Workshop]]) . | + | *D6.4 Ontology and automatic reasoning in crisis management - definitions and concepts, [[http://www.indect-project.eu/files/deliverables/public/d6.4/view]] |
- | + | *D9.11 Ontology and automatic reasoning in crisis management - definitions and concepts, [[http://www.indect-project.eu/files/deliverables/public/deliverable-9.11/view]] | |
- | Scenario: | + | |
- | -A man enters the scene and is still for some time | + | |
- | -Then he takes his rucksack off and puts it on the floor. He stays close to it for some time. | + | |
- | -Next, he leaves the rucksack unattended (the object is classified //unattended// if the distance between it and its owner is greater than 3 m) | + | |
- | -Finally, the man disappears and the luggage rest unattended (possible bomb planting) | + | |
- | + | ||
- | The listed above steps correspond to the places of FSPN specifying the scenario. Transition guards define the conditions that should be satisfied to reach the next step. | + | |
- | + | ||
- | {{:projects:pets-scenario.png?600}} | + | |
- | + | ||
- | + | ||
- | The clip below shows the GUI of a software, that internally usess the FSPN approach to recognize video events. | + | |
- | + | ||
- | <html> | + | |
- | <iframe width="560" height="315" src="//www.youtube.com/embed/_hArl9i20TY" frameborder="0" allowfullscreen></iframe> | + | |
- | </html> | + |