Legalo
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(→Generating semantic relations) |
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** vnrole:Destination → to | ** vnrole:Destination → to | ||
** vnrole:Topic → about | ** vnrole:Topic → about | ||
- | * | + | * while traversing the statements, also the types of subject nodes are taken into account. Namely, given a subject node its most general FRED type is added into the label of a semantic relation |
* repetitions of terms into a label of a semantic relation are avoided, i.e. in case of consecutive properties in a sub-graph such as ''born'' ''born'' only one is used into a semantic relation | * repetitions of terms into a label of a semantic relation are avoided, i.e. in case of consecutive properties in a sub-graph such as ''born'' ''born'' only one is used into a semantic relation |
Revision as of 19:35, 13 June 2014
Legalo
Path identification algorithm
algorithm legalo is input An RDF graph G from FRED output A set S of RDF triples expressing semantic relations between named entities recognized in G let E the set of named entities in G let C a set of named entity pairs for each named entity e1 in E for each' named entity e2 in E if e1 != e2' add <e1, e2'> to C let P a set of sub-graphs for each pair <e1, e2> in C directPaths ← depth first search in G of direct paths between e1 and e2 if directPaths is not empty for each directPath in directPaths add directPath to P else for each event event in G leftSubGraph ← depth first search in G for finding the shortest direct paths between e1 and event rightSubGraph ← depth first search in G for finding the shortest direct paths between and event and e2 if rightSubGraph does not contain agentive roles add rightSubGraph to P for each sub-graph p in P statement ← generate semantic relation from p
Generating semantic relations
In order to generate a semantic relation from each sub-graph identified with the legalo algorithm, the following criteria are taken into account:
- a label of a semantic relation is generated by concatenating the properties found in the statements from an event to an object
- some mappings between properties and terms of a semantic relation are performed according to the following criteria
- vnrole:Beneficiary → for
- vnrole:Instrument → with
- vnrole:Destination → to
- vnrole:Topic → about
- while traversing the statements, also the types of subject nodes are taken into account. Namely, given a subject node its most general FRED type is added into the label of a semantic relation
- repetitions of terms into a label of a semantic relation are avoided, i.e. in case of consecutive properties in a sub-graph such as born born only one is used into a semantic relation