create a graph for a large dataset in Matlab

How to create a graph for a large dataset in Matlab? first load the dataset, how to define nodes, edges, and weights?because we cant define source and target nodes and their weights in a large dataset, for example, creating graph for a social network

Answer 1

[Steven Lord]

How large is your "large dataset"?

You might find this post on Loren's blog useful, as it walks through creating and analyzing a graph using data about friendship between a number of karate clubs.

[bita hallajian]

Thank you so much, I used the codes that you mentioned a lot, these codes are for karate club or facebook, I want to implement Bugzilla or any other bug tracking systems but I don't have the data set, nodes are stakeholders that post comments on one requirement,how can I show connection between these nodes in graph,can you give me some information in this case?

[bita hallajian]

Is it possible to introduce me a link in this relation I'll be very grateful with your favour

[Steven Lord]

So you want two nodes to be connected by an edge if there is at least one bug on which they both commented? So if you looked at MATLAB Answers you and I would be connected because we both posted in this Answer?

That should be possible to do, but I don't have any code prepared to do it. My thought is to assemble an array with two columns, each row containing a pair of people who posted in the same bug. sort each row then take the unique rows. Continue building that array until you've processed all the bugs in the tracking system, then build your graph using that array.

Alternately for each bug report you could build that same array, check which edges are not already in the graph under construction using findedge, and add the new edges using addedge.

[bita hallajian]

With great thanks for your help I'll try the helpful points you directed me