User:Ruud Koot

Babel user information
nl-N Deze gebruiker heeft het Nederlands als moedertaal. en-4 This user has near native speaker knowledge of English. en-GB-4 This user has near native speaker knowledge of British English. de-1 Dieser Benutzer beherrscht Deutsch auf grundlegendem Niveau. da-0 Denne bruger har intet kendskab til dansk (eller forstår det kun med stor vanskelighed). sv-0 Den här användaren har inga kunskaper i svenska (eller förstår det bara med en stor svårighet). fr-0 Cet utilisateur n’a aucune connaissance en français (ou le comprend avec de grandes difficultés). es-0 Esta persona no tiene ningún conocimiento del español (o lo entiende con mucha dificultad). it-0 Questo utente non è in grado di comunicare in italiano (o lo capisce solo con notevole difficoltà). ru-0 Этот участник не владеет русским языком (или понимает его с трудом).
Users by language

A Ph.D. candidate in computer science (Q21198) at Utrecht University (Q221653).

Accounts

• User:Ruud Koot (bot)

Ontology

→ Wikidata:WikiProject Ontology

→ Wikidata:Books and sources about Wikidata

• need to document best practices somewhere (separate namespace, per property?)
• unification vs. separation: do we prefer a few very expressive property or many simple ones; do we want to reuse the same property in different context or create separate ones? (e.g. Wikidata:Property proposal/Person#religious rank)
• how to properly represent and source birth/death dates/locations and multitudes of transliterations? (e.g. Al-Khwarizmi (Q9038))
  • date of birth (P569),
  • sourcing circumstances (P1480) - but what about floruit (Q36424) (gives neither a precise date of birth/death)?
    • what if we have multiple sources with different sourcing circumstances [1]
  • earliest date (P1319)/latest date (P1326) - this currently leaves the actual field as an unknown value
  • how should queries deal with these complex values?
  • Wikidata:Project_chat/Archive/2013/08#Approximate_birth_and_death_dates
  • w:Wikipedia:Manual of Style/Dates and numbers#Dates of birth and death
• negative claims: "x was not born in y" (especially if they contradict another source)
• Wikidata_talk:WikiProject_Informatics#Algorithms:_Instance_of_or_Subclass_of.3F
  • class vs instance; instance of vs subclass of vs subtype of vs is-a
  • part of, has-a
• Property talk:P1641
  • multi-dimensional properties: what is the preferred canonical form?
  • collections vs alternatives
  • {TCP 20, TCP 21} | {TCP 2220, TCP 2221}
• the current data model allows for different, but isomorphic encodings
  • type theory to the rescue?
  • in some situations a relational model seems more appropriate
• how to state that a certain list is (in)complete. e.g. tracks of an album.
• "named after" in case of multiple names

License

• CC0
• database rights

Other stuff to think about

• how to deal with ontology mismatches between WP and WD
  • or case where a WP wants a different property value
• sourcing
  • how to deal with unreliably imported statements
    • need to be flagged ("imported from" might be too much maintenance work)
    • user interface/API could give a relative view, only displaying/returning reliable/all statements depending on choice of the user
• import/synchronization with external data sources
  • best practices for imports done by bots
    • full URL, import data
  • conflicts between bot imports and manual curation
    • keep imported statements, but mark deprecated?
  • example scenario: record is imported from external database, statement gets manually approved on wikidata, record is deleted from external database; what to do on next synchronization pass (delete, keep, mark as deleted, flag as needing attention)?
  • keep full provenance data (research on this has been done in the context of SQL)
• language agnostic titles and aliasses

To do

• Q4027615 ∼ computer science/information science/computing/informatics
  • Also compare to Q2878974
  • User:Akkakk/iw/Q4027615
  • undo errors introduced by User:Pikolas
• Q2843902 ∼ technische informatica
• Q13423691/Q121182/Q126552/Q13407144
• Q9649/Q13400903
• computer hardware
• computer graphics
• Reductio ad absurdum / Proof by contradiction
• geological era (Q2040803) / age (Q568683)
• doctoral student (Q14437399), research assistant (Q14437386); thesis (Q1266946), doctoral thesis (Q187685)
• http://tools.wmflabs.org/addshore/addbot/iwlinks/

Inherently unsolvable interwiki conflicts

• Q199655, Q13420675
• calculation and computation: this distinction only exists in English
• "techniek", interstingly, this word doesn't seem to have an English equivalent

Notes

• http://phdtree.org/
• dblp, project euclid