1 University of Bologna, IT 2 STLab, ISTC-CNR, IT Add authors - PowerPoint PPT Presentation

1 University of Bologna, IT 2 STLab, ISTC-CNR, IT Add authors Valentina Anita Carriero Aldo Gangemi Andrea Giovanni Nuzzolese Valentina Presutti WOP @ ISWC2019 Auckland, NZ 1, 2 1, 2 1, 2 2 0

What is a recurrent event? In 1917 Amedeo Modigliani creates an oil painting depicting Hanka Zborowska 1 Art Biennale is held biennially

What is a recurrent event? since 1895, and has: organizer art trends as mission two consecutive occurrences 1895 1897 1899 2019 […] 2 Art Biennale has been held biennially, • the Biennale Foundation as event • Venice as event place • the promotion of new contemporary • a time period of ~ 2 years between

But also... bus timetable cultural events ceremonies traditional filter cleaning air conditioner during pregnancy medical ultrasound seasons physiological needs Birthday the Nobel Prize movie showtimes Women's Day International Ramadan Christmas meetings periodical team Carnival Award ceremony 3

Looking around 4

me presenting a ISWC 2019 ISWC session poster ISWC2019 session poster ISWC2019 poster @ me presenting a ISWC 2019 ISWC session poster ISWC2019 session poster ISWC2019 poster @ 5

Looking around 6

Competency Questions ID series? Which is the (immediate) previous event in a recurrent event CQ5 series? CQ4 recurrent event series? 7 CQ3 recurrent event series? Which is the time period elapsing between two events of a CQ2 Which are the events of a recurrent event series? CQ1 COMPETENCY QUESTION What are the unifying criteria shared by all the events in a Which is the (immediate) next event in a recurrent event

RecurrentEventSeries ODP 8 ontologydesignpatterns.org/wiki/Submissions:RecurrentEventSeries

:RecurrentEventSeries Recurrent event series as an Situation its members are of type Event 9 intersection of Collection and

:hasNextEvent, :hasPreviousEvent The member events are in sequence These properties relate only events member of the same recurrent event series example for :hasNextEvent if not, running queries like this generates triples asserting local inconsistencies 10

:isTheLastEvent :eventNumber Is this event the last event of the series, or not? Which position this event has in the series? 1, 2, 3, … 11

:UnifyingFactor at least one element or property occurs in each event member with some degree of flexibility topic e.g. place organizer … 12

:TimePeriod It represents the recurrence of a Recurrent Event Series approximated temporal distance between one member event and the next and the previous ones Estimated or Observed time period? future work 13 It works as a parameter region of valid values

e.g. 14 possible implementation

Example […] Umbria Jazz has been held annually, since 1973, and has: takes place consecutive occurrences 1974 and 1975 started in July and ended on August 1 st 1973 was held in August 15 • the musical genre jazz as topic • Umbria as event place • July as month in which it usually * • a time period of ~ 1 year between two * always since 1976

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Future work - Traditional ceremonies, festivals, cultural events, but also: natural origin set by humans part of a workflow - Recurrent Event as a fluent ? 17 • sunrise • periodic migrations of animals • world days • train schedule • medical prescriptions • periodical supply of services

Thank you! Valentina Anita Carriero valentina.carriero@istc.cnr.it