naf2sem and cross-document event coreference
TRANSCRIPT
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Streaming event architecture
Piek, Filip
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NAFs
NAF2SEM
- chunk size- map non-entities?- location of frame files...
Extraction arguments
Cross-documentEvent
Coreference
- match type- needed roles- synsets or phrases- time(for each event type)
Matching arguments
Knowledge Store
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#1) NAF2SEM
● reads NAFs as they come● extracts events within a single file● converts them to RDF-TRIG● passes the RDF relations to the cross-document Event
Coreference module
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#2) Event Coreference module
● gets a stream of RDF events● for each event, checks if coreferential event exists in KS
○ yes => insert event RDF + identity relations (to other events) in KS○ no => insert event RDF only
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#3) Knowledge Store
● exposes a method to insert RDF from outside● merges events which are connected with an identity relation
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This means ..
● .. now we have a streaming end-to-end architecture, from NAF to KS
● .. no need to reprocess previous NAFs when new file arrives● .. flexibility and support for further event coreference research
○ new idea =>adjust the command line arguments
● .. the NAFs should be processed in decent chunks to prevent crashing KS
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Future brings ..
.. cool ideas (to be examined first):
● using WordNet relations for coreference● handling future events● specific treatment for recent events which happened in the last
X days
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DEMO
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New NAF arrived
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NAF2SEM creates TRIG
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EC queries the KS for potential matches
example query:
Event types
Associated ILIs
Role fillersTime expressions
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.. and appends identity relations to the TRIG file
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The TRIG is now ready to be digested by KS.
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