edited to add: Hello new visitors! Eek! I had no idea there would be so much interest. Please be advised: Twitter comments and text mining are hardly exact sciences, and this was an exercise to see whether we could get a simple algorithm to detect positive and negative commentary.
The takeaway is that people complain about transit rather a lot–particularly when it’s 100+ degrees out!
IOW, these are NOT rankings of transit system performance! They are rankings of how much, on average, Twitterers complain/compliment the services or individuals examined via the feeds.
I haven’t analyzed the word clusters yet, but it’s pretty clear: one of the most common things to complain about: other passengers! (not related to transit company performance!)
So with those caveats:
I recently scraped some Twitter feeds to gauge the sentiment expressed about three control groups and two groups of mobility providers: airlines and transit providers. The controls: celebrities, politicians, and “villains”.
Next up: what are people saying as they kvetch about transit?
Schweitzer, L. 2011. “How are we doing? Transit and Airline Customer Sentiment Expressed Via Twitter”. Working paper. University of Southern California School of Policy, Planning and Development.