Social Network Analysis @ FIX University Cultural Campus

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Social Network Analysis

Lada Adamic

This course will use social network analysis, both its theory and computational tools, to make sense of the social and information networks that have been fueled and rendered accessible by the internet.

Announcements

Live Stream Google Hangout with Google

Fri 5 Oct 2012 11:14:00 AM PDT

Social Analytics @ Google (slides)

Slide deck for Google Hangout. We will also hopefully have a URL in which the slides will auto-advance. Stay tuned.

Fri 5 Oct 2012 10:41:00 AM PDT

SNA: Google Hangout with Google researchers tomorrow + HW2 feedback

Hi Everyone,

Item 1: I will be chatting with Ed Chi and David Huffaker from Google tomorrow, Friday Oct. 5th, starting 11:15am Pacific Time. Ed and Dave will start out telling us about some SNA research they have been doing at Google, and then we'll open the channel up for questions. To watch the broadcast live, check https://class.coursera.org/sna-2012-001 around that time and there will be a live YouTube stream there (fingers crossed). If you are not in the hangout, you can post your questions to Ed and Dave on this thread https://class.coursera.org/sna-2012-001/forum/thread?thread_id=639. Up to 9 people can join us in the hangout. If you are interested in being one of those 9, please reply to the thread and tell us: 1) a bit about yourself 2) whether you have a high bandwidth connection 3) whether you have a Google+ account

More on Ed: http://www-users.cs.umn.edu/~echi/

More on Dave: http://www.davehuffaker.com/

Item 2: by popular demand, HW 2 will now give you immediate feedback. If you have already submitted the assignment, check back to see if the feedback is there. We are still learning about feedback, so if this feedback gives too much away, apologies, we will be more subtle on HW3, or at least try to be.

Item 3: We are glad the forums are so lively. In order to help others (including us) help you, please follow the guidelines posted at the top of the forum page:

* Use up-votes to bring attention to thoughtful, helpful posts (this makes it more likely that they'll get the attention they deserve).

* Search before you post (many duplicate posts make the forum cluttered and less usable).

* Post in the appropriate sub-forum (posting in the wrong sub-forum also creates clutter and makes it more difficult to find relevant info).

And lastly, if you are seeking technical help, please try to be descriptive. Saying 'The stuff is broken' without any further details makes it difficult to debug. Please say what operating system you are on, which software/browser you are using, the URL of the page you were accessing (if applicable), the steps you took that got you to the place where you experienced the problem etc.

Thanks and hope to see some of you tomorrow at the Hangout.

Thu 4 Oct 2012 11:38:00 AM PDT

SNA Week 2 lectures and assignment(s) available

Hi Everyone,

Lectures and assignments for the 2nd week have been posted. Thanks to fearless individuals (thank you! thank you! thank you!) who test-drove these materials and posted about their flaws to the forum today, these should be now ready for actual consumption.

We haven't heard of any major issues in viewing the new and improved NetLogo models in browsers with Java enabled. If you continue to experience difficulty, please refer to the wiki page on this and add to this thread with your configuration details. Also, for the RandomGraphs NetLogo model, load it, if possible, from this URL, as it will let you calculate the average shortest path.

Reminders:

HW 1 is due this Friday. Tips: wait for your network to download completely (N out of N) in GetNet before saving the GML file. Upload this file in this exact form for inspection by the grader. If you save it with Gephi, Gephi may write things in there that will make NetworkX, used by the grader, not want to read it. Use a plain-text editor to edit the template. Don't put any new newlines between the colon (:)s and your answers. The submission server has intermittently thrown some system errors but is well behaved at the moment. Let us know via the forum under 'Technical Feedback' if this is not the case.

HW 2 is due next Tuesday.

Optional programming assignment 1 is due next Tuesday.

Optional programming project is posted (you may be able to do variant 1 of this even if you do not know how to code, provided you have a ready data source that can be imported into various SNA software packages. In that case you are more than welcome to do the assignment and it will be peer-reviewed along with others).

We hope that this week's lectures and assignments will get you interested in modeling networks. Next week we'll be back to mostly empirical analysis when tackling network centrality.

Mon 1 Oct 2012 10:06:00 PM PDT

Coursera SNA Week 1 updates

Thanks to everyone for a lively start to the first week. 21K students have been active in the course so far. This is the first time the course is being taught online, and we appreciate your participation and helpful feedback as we iron out some kinks. We are grateful to those of you who fearlessly watched lectures and submitted assignments on the very first day, and are especially grateful to those who are helping others through the forums.

Guided by the forum discussions, we have compiled some troubleshooting info for NetLogo and Gephi. We encourage you to help make the wiki our go-to spot for useful info by contributing to it. Don't fret about Gephi and NetLogo. If you can get Pajek, UCINet, or similar to work, you will be able to do "Gephi" assignments. The forum and wiki would be great places to help one another translate between these different software packages. NetLogo runs very reliably as a standalone application, so there's no worry about being able to run/use NetLogo. NetLogo's creators have also given us updated browser applet software, so e.g. thecommunity visualization demo should be usable with more browser setups (as long as you enable Java!).

Here are some of the most common issues:

1) Video playback is flaky: make sure you are using the most up-to-date browser. If all else fails, download the video.

2) Can't open pptx slides: under 'video lectures' we have now made PDF versions available.

3) NetLogo app won't load, Gephi won't install (see above)

4) Where is dining.gephi, HW1 template

5) formatting HW1 for auto-grader (use Notepad++ or similar on Windows to keep the text clean, upload the .gml from GetNet directly, also see forum for additional tips)

6) HTML toggle obscures video in Lecture 1A (we have removed the toggle)

What you can do to help:

* keep reporting issues in the forums

* search the forum before you post (is there already a thread with your question?) to reduce clutter

* vote up interesting questions and helpful answers, mark questions as resolved if they are

* share solutions to frustrations you've encountered

* add information to the wiki

Reminders:

* HW1 is due next Friday Oct. 5th

* Twitter: @SNAcourse, #SNAc, thanks for all the thanks, enthusiasm and interesting thoughts tweeted to these! We've been admonished about retweeting too much, but we do appreciate them. BTW, if you'd like a response to a request for help, the forum is a more reliable/helpful place.

* Did we mention how we'd like to build up the wiki? Those useful tools you were mentioning in the forum, let's put them in the wiki. You plan to do assignments in Pajek? Share Pajek functionality on the wiki. You're writing lecture notes? Please post them!

Lastly, it's amazing to see different communities come together around shared interests. Hope that continues.

Thank you!

Thu 27 Sep 2012 11:17:00 PM PDT

Assignment 1 ready to view, but not ready to submit

Hi Everyone,

From the forums I see that many of you just can't wait to get started on the first assignment. It is now postedhere, but we're still working on getting the 'submit' button to work properly on the live site. So please feel free to get started, but don't expect flawless grading until a day or two from now (don't worry, you can resubmit as many times as you like and the highest score will be counted).

Also, some of you have been tweeting about using the netvizz app to pull your Facebook networks. I have been in contact with the creator of the netvizz app about the anticipated load on his university's server, and he very graciously allowed me to use his code on Coursera's servers. So please, use http://snacourse.com/getnet/ to download your network instead of netvizz. Things might still get overloaded, but they'll get overloaded on our servers :). As an added bonus GetNet directly generates a GML file which is what you need to upload as part of the assignment.

Finally, Rodger Devine, a member of our fearless teaching staff, has put together survey results from our pre-course survey. Have a look.

Thanks,

Lada

Mon 24 Sep 2012 9:28:00 AM PDT

SNA course starts today

Hi Everyone,

We're just about ready to get started. Week 1's lectures are available (apologies for the mediocre sound quality on a few of the clips, it gets better in subsequent weeks...). Assignment 1 will be available by Tuesday Sept. 25th and will be due on Friday, Oct. 5th.

If you have questions, please check out the FAQ. If they are not answered there, please post them to theforum. We also have a course wiki, that has additional information and that you should feel free to contribute to. My assistants (Rodger Devine, Bonnie Yu, and Ke Wu) and I will be checking in on the forum and wiki and helping out.

I will occasionally be tweeting about the course as @snacourse, and the hashtag we have settled on for now is #SNAc.

I'm thrilled that so many of you have decided to give this course a try. Social (and other) networks everywhere, prepare to be analyzed!

Lada

Mon 24 Sep 2012 4:04:00 AM PDT