Wikidata:Property proposal/step count

step countEdit

Originally proposed at Wikidata:Property proposal/Natural science

   Withdrawn
Descriptionthe number of previous steps used in a calculating the next step of an iterative method
Data typeQuantity
Domainiterative methods
Allowed valuespositive integers
Allowed unitsnone
Example 1Euler method (Q868454) → 1
Example 2The second-order Adams–Bashforth method (Q97613851) → 2
Example 3explicit Runge–Kutta method (Q51846055) → 1
Example 4For any instance of linear multistep method (Q1462003), we will have <item> → s (where s is any positive integer, which depends on the particular method).
Format and edit filter validationto-do: only allow positive numbers. We can probably choose an upper bound because iterative methods don't use more than a few steps (As far as I know, at least!).
Planned useclassify lineary multistep methods.
Number of IDs in sourceN/A
See alsonumber of stages (Q97672364)

MotivationEdit

One of the defining characteristics of an iterative numerical method is the number of previous steps that are used to calculate the next step of the iteration. This value affects the memory requirements, computational expense, and the accuracy of the calculations. Multistep methods can also cause indexing problems at the beginning and end of an array. For this reason, it would be useful to classify numerical methods according to the step count.

In particular, I am planning to use this property to classify instances of linear multistep method (Q1462003). However, it could also be applied to other types of algorithms (I believe there are multistep algorithms for numerical optimization). The-erinaceous-one (talk) 08:22, 28 July 2020 (UTC)

DiscussionEdit

<ping project should not be used in an indented reply> Opensofias
Tobias1984
Arthur Rubin
Cuvwb
TomT0m
Physikerwelt
Lymantria
Bigbossfarin
Infovarius
Helder
PhilMINT
Malore
Nomen ad hoc
Lore.mazza51
Wikisaurus
The Anome
The-erinaceous-one
Daniel Mietchen
Haansn08
Xenmorpha
  Notified participants of WikiProject Mathematics

  Question Do all methods use a constant number of steps? It is possible that a particular method uses an adaptive step count (though I don't know of such a method). How should we handle such a case? The-erinaceous-one (talk) 08:22, 28 July 2020 (UTC)

  Oppose There are too many "number of" properties already. Use quantity (P1114) as qualifier instead. /ℇsquilo 07:44, 10 August 2020 (UTC)

  Withdrawn I withdraw the proposal, per User:Esquilo's comment. The-erinaceous-one (talk) 15:17, 12 August 2020 (UTC)