Ok I defined a MADisjointSets algorithm to do what you need (indeed
forgets that I needed some node with nextNodes)
See tests in MADisjointSetsTest
On 11 juin 2010, at 01:20, Alexandre Bergel wrote:
MOKruskal
will return edges to build some trees, not the
components.
Nothing out of the box, but it's pretty easy to use
MODisjointSetNode and a graph traversal to do that.
nodes do: [:n|
n makeSet ].
nodes do: [:n|
n nextNodes do: [:next |
n union: next ]]
nodes inject: Dictionary new into: [:d :n |
(d at: n find ifAbsentPut: [OrderedCollection new]) add: n ]
should return a map where each value is a connected component
I have no idea how to use this.
I tried:
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
| g |
g := MOGraphStructure new.
g nodeClass: MODisjointSetNode.
g edgeClass: MOGraphEdge.
g nodes: (1 to: 5).
g edges: {1 -> 2. 2 -> 3 . 4 -> 5} from: #key to: #value.
g nodes do: [:n|
n makeSet ].
g nodes do: [:n|
n nextNodes do: [:next |
n union: next ]].
g nodes inject: Dictionary new into: [:d :n |
(d at: n find ifAbsentPut: [OrderedCollection new]) add: n ]
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
There are 5 implementors of nextNodes: MASndNode, MATNodeNode,
MOHitsNode, MOLayerNode, MOTarjanNode.
What should I do?
Alexandre
>
> Doru
>
>
> On 10 Jun 2010, at 00:58, Alexandre Bergel wrote:
>
>> Hi!
>>
>> I haven't closely followed the status of the moose algo. I am
>> looking for a way to get group of interconnected nodes.
>>
>> A simple test would be:
>>
>> testCycle1
>> | view |
>> view := MOViewRenderer new.
>> view nodes: (1 to: 5).
>> view edges: {1 -> 2. 2 -> 3 . 4 -> 5} from: #key to: #value.
>> view treeLayout.
>> window := view open.
>>
>> self assert: (view root numberOfDistinctGroups = 2).
>> self assert: (view root distinctGroups first includesAllOf: (1
>> to: 3)).
>> self assert: (view root distinctGroups second includesAllOf:
>> (4 to: 5)).
>>
>> Is there some material that I can use to code
>> #numberOfDistinctGroups and #distinctGroups ?
>>
>> Cheers,
>> Alexandre
>>
>>
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>>
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>
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