#8288: Depth/Breadth improvement for SearchForest
-----------------------------+----------------------------------------------
Reporter: nborie | Owner: sage-combinat
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.3.4
Component: combinatorics | Keywords: enumeration depth breadth forest
children
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Description changed by nborie:
Old description:
> The goal of this patch is to include breadth enumeration method for
> SearchForest...
>
> The interested is for enumerated Set defined by a set of roots and a
> children function. For a finite set of roots but infinite set (infinite
> depth of the tree), the breadth method is a necessity.
>
> The breadth method is also a need to define properly indices of infinite
> Graded algebra (but finite degree by degree). The patch contains method
> returning iterator of all element of given depth.
>
> Using extra argument : father and next_brother method, it is possible to
> enumerate not starting from the roots of trees. a _iter_from_to method
> build an iterator keeping nothing in memory than the first and the last
> point.
New description:
The goal of this patch is to include breadth enumeration method for
SearchForest...
The interested is for enumerated Set defined by a set of roots and a
children function. For a finite set of roots but infinite set (infinite
depth of the tree), the breadth method is a necessity.
The breadth method is also a need to define properly indices of infinite
Graded algebra (but finite degree by degree). The patch contains method
returning iterator of all element of given depth.
Using extra argument : father and next_brother method, it is possible to
enumerate not starting from the roots of trees. a _iter_from_to method
build an iterator keeping nothing in memory than the first and the last
point.
#8361 #6812 will follow after this ticket.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8288#comment:5>
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