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DM: Simulation Data Model RFC and other comments

DM: Simulation Data Model RFC and other comments. Tuesday, 1130-1300, A. Overview. Recap SimDM RFC Comments AI:action item Implementations Note (LePetit etal) SimDB@VO-URP Further work SimDB (this afternoon) SimTAP (yesterday). Particle catalogues. FOF group catalogues.

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DM: Simulation Data Model RFC and other comments

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  1. DM:Simulation Data Model RFC and other comments Tuesday, 1130-1300, A

  2. Overview • Recap SimDM • RFC Comments • AI:action item • Implementations • Note (LePetit etal) • SimDB@VO-URP • Further work • SimDB (this afternoon) • SimTAP (yesterday)

  3. Particle catalogues FOF group catalogues initial conditions FOF group finder GADGET3 SUBFIND Mock images “Gridder” Density field grids Subhalo merger tree forest SkyMaker Synthetic galaxy catalogues MoMaF L-Galaxies Galaxy spectra + Mock galaxy catalogues (“light cones”) BC03/M05 SSPs

  4. Other example: PDR

  5. RFC • there • here

  6. Which docs in RFC? • see header of RFC page • May need better cross-linking in docs themselves • AI: Find out how to combine docs in final PR package.

  7. Use of term Protocol • SimDM:simdb/protocol/Protocol:describes how an experiment can/will/must be defined. • Compare ”Method by which an observation is made” () • Defines parameters, results,some semantics • Compare to SIAP, SSA etc. • SAME! • So in fact very apt name to use! • AI: describe possible confusion in document and suggested ways to avoid it.

  8. Service not well defined • A resource that allows access to SimDM/Resource-s • to results of 1..* Experiments • to results of experiments for a given SimDM/Protocol • to resources in a SimDM/Project • Vaguely defined on purpose • service will define details itself • Can be a SimDAL service • when defined for a finite set of SimDM/Protocols, could have SimTAP as queryData part. • AI: improve description (CR, GL)

  9. How to use the model? • SimDAL+SimTAP • SimDB? • SimRegistryExt? • Too complex for simple models? • SimDM targets discovery of services • Also results of “simple models” have been created with protocols • Sometimes required to assist description of complex models • examples above • AI: Try to describe simple models in SimDM • NB Spec contains no statement about exclusivity of SimDM • special cases may deserve (if not need) special attention • “micro-simulations”, “cosmological simulations”

  10. SimDB => SimDM • in utypes and names of XML files, replace SimDB with SimDM • AI: Do it, how about root package (simdb)?

  11. Algorithm • What if different protocols use same Algorithm. No normalised usage of common algorithms • REPLY:Algorithm uses semantic label to refer to externally assumed common definition. No redundancy. • AI: none

  12. New comments(discussion yesterday with VOParis) • ProductType: Should it be on Protocol iso on Product • Query: “Give me all SimDM/Protocol-s that can produce spectra.” • Do we need a kind of InputDataType on Protocol? • Required information if one wants to run a SimDM/Protocol • AI: put discussion on wiki

  13. Semantics • We use SKOS concepts • Semantic vocabularies for SimDM • See Franck in semantics session • AI: Check we have properly written vocabularies containing all SKOS concepts used in the model.

  14. Implementations • What is an implementation? • serialisation of real(istic) instaces in XML schema • (Web) application using the model • Described in Note (link) • see B. Ooghe Thursday morning DM) • SimDB@VO-URP (local link)

  15. Registry • Which SimDM/Resource-s qualify as Registry resources. • SimDM → Registry extension for SimDAL services. • AI: Discuss what must be done, this afternoon theory session.

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