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* GaryBader - What is the definition of a group in Cytoscape? Is it just a set? If so, what things can be in the set? Is this correct? "A group is a set of one or more nodes (CyNode) and zero or more edges (CyEdge) that connect nodes in the group. A group can be treated as a node (CyNode) itself by being the source or target of an edge."  * GaryBader - What is the definition of a group in Cytoscape? Is it just a set? If so, what things can be in the set? Is this correct? "A group is a set of one or more nodes (CyNode) and zero or more edges (CyEdge) that connect nodes in the group. A group can be treated as a node (CyNode) itself by being the source or target of an edge."
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 * IlianaAvila - In the interfaces I created, the word {{{group}}} is always closely tied to the relationship between a subnetwork and its containing network:

  * {{{GroupManager.addGroupToNetwork(network, subnetwork)}}}: record the fact that {{{subnetwork}}} is a group in {{{network}}}
  * {{{GroupingStrategy.group(network, subnetwork)}}}: depict {{{subnetwork}}} as a group in {{{network}}}

The reason why I don't simply call a {{{group}}} a {{{subnetwork}}} or a {{{network}}} is because the word {{{group}}} suggests that the nodes and edges contained in it are held together by a special relationship that other subnetworks in the containing network don't have. So, the word {{{group}}} could also be seen as an adjective for {{{subnetwork}}}: a {{{grouped subnetwork}}} is a subnetwork that has been deemed to be a special subnetwork (because its nodes and/or edges are related to each other in some special way) in the containing network. Does that make sense? I hope so...would the interface make more sense if the methods looked like this?:

 * {{{GroupManager.markSubnetworkAsGroup(network,subnetwork)}}}
 * {{{GroupingStrategy.groupSubnetwork(network, subnetwork)}}}

 * GaryBader - Can a group be used as a CyNode? Can I create a CyEdge that has a group as a source or target?
 * IlianaAvila - You should be able to. To depict a group as a {{{CyNode}}} you use the {{{COLLAPSING_STRATEGY}}}. Then, there needs to be a way of the user obtaining the {{{CyNode}}} that represents the group. This could be done in a number of ways. One of them could be changing the returned object of the {{{GroupingStrategy.group(network,subnetwork)}}} method from a boolean to an {{{Object}}} that the user should cast to the appropriate type.
  • GaryBader - What is the definition of a group in Cytoscape? Is it just a set? If so, what things can be in the set? Is this correct? "A group is a set of one or more nodes (CyNode) and zero or more edges (CyEdge) that connect nodes in the group. A group can be treated as a node (CyNode) itself by being the source or target of an edge."

I said one or more nodes because I assume it doesn't make sense for a group to have zero nodes - is that true? Maybe there is a case for a group to have zero nodes.

This is different than the hyperedge, which is a set of two or more nodes. The hyperedge cannot contain other edges and cannot be treated as a node itself. (I'm assuming that it doesn't make sense to create a hyperedge with 0 or 1 nodes).

  • IlianaAvila - In the interfaces I created, the word group is always closely tied to the relationship between a subnetwork and its containing network:

    • GroupManager.addGroupToNetwork(network, subnetwork): record the fact that subnetwork is a group in network

    • GroupingStrategy.group(network, subnetwork): depict subnetwork as a group in network

The reason why I don't simply call a group a subnetwork or a network is because the word group suggests that the nodes and edges contained in it are held together by a special relationship that other subnetworks in the containing network don't have. So, the word group could also be seen as an adjective for subnetwork: a grouped subnetwork is a subnetwork that has been deemed to be a special subnetwork (because its nodes and/or edges are related to each other in some special way) in the containing network. Does that make sense? I hope so...would the interface make more sense if the methods looked like this?:

  • GroupManager.markSubnetworkAsGroup(network,subnetwork)

  • GroupingStrategy.groupSubnetwork(network, subnetwork)

  • GaryBader - Can a group be used as a CyNode? Can I create a CyEdge that has a group as a source or target?

  • IlianaAvila - You should be able to. To depict a group as a CyNode you use the COLLAPSING_STRATEGY. Then, there needs to be a way of the user obtaining the CyNode that represents the group. This could be done in a number of ways. One of them could be changing the returned object of the GroupingStrategy.group(network,subnetwork) method from a boolean to an Object that the user should cast to the appropriate type.

API/CommentSemantics (last edited 2009-02-12 01:03:38 by localhost)

Funding for Cytoscape is provided by a federal grant from the U.S. National Institute of General Medical Sciences (NIGMS) of the Na tional Institutes of Health (NIH) under award number GM070743-01. Corporate funding is provided through a contract from Unilever PLC.

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