MIS 301 Assignment #4 (This is not a group assignment!)

Bear in mind that you are bound by Smeal’s code of academic integrity. All work should be your own and completed individually, and you are not allowed to discuss this assignment. Any violation will result in a minimum penalty of 2 times the assignment (-100 points). Please type your name on the statement below:

I ________________________ affirm that I have neither given, utilized, received, nor witnessed unauthorized aid on this deliverable and have completed this work honestly and according to the professor’s guidelines.

Download and save the dolphins.gml dataset. The dolphin dataset shows the frequent associations between bottlenose dolphins in a community living off Doubtful Sound, New Zealand, as compiled by D. Lusseau et al. (2003).

When the assignment is completed, please upload this page with your answers, and the exported pdf file (#8 below). Open the data set and set as undirected.

How many nodes are in the data set? ______ How many edges are in the data set? _______

Use Force Atlas to draw the network graph. Change your repulsion strength (6000) to make the graph show properly. Change the ranking to Degree.

Under the statistics, run the average path length. What is the diameter?__________

What is the average path length? _______________

Run the average degree which is also on the statistics tab. What is the average degree? _____

Click on the size icon, select betweenness centrality for Ranking, change the max size to 50 and then apply. Repeat with the palette icon. You may have to play with these tabs to make sure the graph is updated. In Layout, click on adjust by sizes, run and then stop. Finally, turn on the labels, and then adjust the labels by size.

Which two dolphins have the greatest influence on the network (biggest two nodes)? ____ _____________________________________________________

Now, click on the size icon, select closeness centrality for Ranking, change the max size to 60, and then apply. Repeat with the palette icon. You may have to play with these tabs to make sure the graph is updated. Have more dolphins become more influential? Which three or four have the greatest influence? ___ ____________________________________________

Next, run the modularity statistic to obtain clusters or communities. Then, click on the Palette, Partition and select modularity class and apply. How many communities? __________

Save the file as .gephi extension. Click on Preview, if labels are missing, click on Show Labels under Nodes, and change font size if needed. Uncheck the curved under Edges. Then, export it as a pdf file. Upload this exported PDF, your answer sheet (this Word document), and your Gephi file to Canvas. Note, if the preview is not working, take a screenshot of your Work Area. If you cannot open the saved .gephi file by double clicking, try to open the Gephi application first, then use the “Open Graph File…”to load the saved .gephi file.