On Fri, Sep 24, 2010 at 12:37 PM, Markus Korn <email address hidden> wrote:

> Seif, can you please give tow different usecases, one for the old
> definition of LeastRecentActors and one for your new one. Please also
> try to explain how changing the definition will influence real world
> usecases.
>
> --
> Wrong understanding of the LeastRecentActors
> https://bugs.launchpad.net/bugs/646124
> You received this bug notification because you are a member of Zeitgeist
> Framework Team, which is subscribed to Zeitgeist Framework.
>
> Status in Zeitgeist Framework: New
>
> Bug description:
> In an attempt to work on bug #641968 I discovered that we some of us defer
> on the understanding of LeastRecentActor
>
> The documentation stated that LeastRecentActor = enum_factory(("The first
> event of each different actor"))
>
> Let's assume we have sequential events. (The actors are defined by numbers)
>
> 2, 1, 3, 2, 1, 4
>
> So we have 4 different actors (1,2,3,4) and we want to sort them by least
> recent.
> the least recent is not 2 or 1 since they are used again at the end. the
> least recent is 3
>
> This means LeastRecentActors should return the latest actors sorted ASC:
>
> 3, 2, 1, 4
>
> and not
>
> 2, 1, 3, 4
>
> When we look at LeastRecentSubjects = enum_factory(("One event for each
> subject only, "
>   "ordered with oldest events first"))
> My understanding according to Siegfried is:
>
> <seif_> RainCT,
> <seif_> LeastRecentSubjects = enum_factory(("One event for each subject
> only, "
> <seif_>   "ordered with oldest events first")
> <seif_> so i f i have
> <seif_> the subject
> <seif_> 1, 2, 1, 3, 4
> <seif_> what do i get returned
> <seif_> 1, 2, 3, 4
> <seif_> or
> <seif_> 2, 1, 3, 4
> <seif_> ?
> <RainCT> seif_: the later
> <RainCT> for each subject you only look at the most recent one
> <seif_> ok then we should do the same for the actors :)
> <RainCT> Yes. Isn't it like this already?
> <seif_> no
>
> In that case if we follow this convention I can update the doc strings and
> already have the bug fix for both this bug and #641968
>
>
>
>
>
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Ok let me try to explain it in terms of real applications:

10:00 Firefox access youtube.com
10:01 Opera access google.com
10:02 Chrome access youtube.com
10:03 Firefox access facebook.com
10:04 Opera access twitter.com
10:05 Firefox access google.com


Currently LeastRecentActor would give us:

10:00 Firefox access youtube.com
10:01 Opera access google.com
10:02 Chrome access youtube.com

Where it should give us:
10:02 Chrome access youtube.com
10:04 Opera access twitter.com
10:05 Firefox access google.com

because with the same criteria LeastRecentSubject gives us:
10:02 Chrome access youtube.com
10:03 Firefox access facebook.com
10:04 Opera access twitter.com
10:05 Firefox access google.com

and not:
10:00 Firefox access youtube.com
10:01 Opera access google.com
10:03 Firefox access facebook.com
10:04 Opera access twitter.com

Real World use cases would be changed in terms of awaited results. I dont
know how to explain it.