Archive for October 2014
I’ve been running my new Comment Collector program during the Connected Courses (ccourses) MOOC and updating the output on a daily basis. The idea is to get a quick impression of current MOOC activity by bringing together in one place brief summarised versions of blog posts and their comments. Posts with comments are displayed for 15 days in order of their latest comments while posts without comments are flagged ‘New Post’ and displayed for 3 days. These parameters reflect my own ideas of what might be useful and can easily be changed.
The Collector currently scans the RSS post and comment feeds of a subset of blogs taken from the list of syndicated blogs. RSS feeds can lose old data so the Collector aggregates posts and comments over the 15 day periods. Posts intended as ccourses contributions are recognised by a tag placed in the post. There are currently over 230 syndicated blogs listed but some are inactive or have posts without recognisable tags in a label, category or in the title. Originally, the Collector recognised only ‘ccourses’ as a tag but this was altered so that variants such as ‘connectedcourses’ or ‘Connected Course’ were also recognised (not ‘cc’ – ‘cute cats’?) resulting in a significant increase in the number of accepted posts. The Collector works with most WordPress or Blogger blogs but not with some other commenting methods (eg tumblr, G+, FeedBurner etc) or blogs without comment feeds. At present, the Collector scans about 80 blogs with suitable feeds and probably covers the majority of active ccourses bloggers.
I ran a previous version of the program during the rhizo14 MOOC producing a graph showing (roughly) how commenting developed with time. The first graph illustrated below is similar and shows the total number of posts (blue) and comments (red) displayed each day (normally evening BST) and published with recognised ccourses tags over the preceding 15 day period. Again, this is no scientific study. The Collector is experimental and adjustments were made during the 31 day period covered by the graph This applies particularly to the first few days when blogs were being added and removed and the aggregation period was less than the nominal 15 days. A few blogs were removed because apparently valid RSS feeds could not be accessed by the Collector (reasons beyond me!). A sudden increase in posts and comments on the 25th Sept was caused when the number of recognised tags was increased. Subsequently, the graph is at least indicative of post and comment activity over the 80 or so blogs being scanned with not much variation around an average of about 60 posts and 225 comments over 15 day periods. For clarity, the average number of comments per post for each period (yellow) is scaled up by a factor of 100.
The second graph below is an attempt to estimate the distribution of specific numbers of comments among all recognised posts (495 in total) over the entire period from Sep 24 to Oct 24. For example, the first point indicates that 19 posts received 1 comment. The missing zeroth point corresponding to posts with zero comments would have indicated that 78 posts received no comments at all (displaying it would have compressed the vertical scale). This seems high but includes blogs with at least one recognisable post followed by other posts that may or may or may not have been intended for ccourses but with no recognisable tags. The sample lacks statistical significance but a cluster of posts with around 2 comments and maybe other clusters are discernible followed by a long tail of up to 18 comments for some single posts.
Other quantitative types of analysis are possible and may be useful for research or other purposes. For example, representations of the network of connections created by participants in a MOOC as they comment on each other’s posts could be of interest, maybe along the lines of what Martin Hawksey has done for Twitter. There are other possibilities – ranking people by name in order of number of posts or comments? This seems more questionable than ranking tweets in the same way but where should the line be drawn and why? Advice and suggestions welcome!
Thanks to all ccourses folks who have retweeted and favorited the Collector updates. The rapid turnover of ccourses posts and comments has field-tested the Comment Collector well – sometimes to breaking point! I will keep it running until the formal end of Connected Courses and now that the program is reasonably stable it’s little trouble to continue publishing the output. However, there are several other methods available to ccourses participants for monitoring activity such as the blog aggregator, the forum, the Facebook page etc and I’m unsure to what extent the Comment Collector has a useful or distinct role to play.
As always, comments and suggestions are very welcome but at the very least if you find the Collector useful, please ‘like’ this post so I have some measure of the Collector’s value in the context of ccourses – thanks!