October 2012 Archives

MathML in Drupal

| | Comments (0)

I was also able to get MathML to display in Drupal, at least on the AccessAbility Web site. The key for Drupal is to make sure that the Input Format is set for Full HTML.

See the ANGEL and MathML entry for information getting the appropriate namespace version of MathML.

Possible Improvement in Speech Recognition?

| | Comments (0)

One of the challenges of video captioning is that it does rely human intervention to achieve the most accurate results. That's because speech recognition is only reliable in certain circumstances, usually when the speaker has set up a profile on a Dragon speech recognition engine (this could include instructors BTW).

To achieve the best transcription in other circumstances though (and human listeners require 96-98% accuracy), you usually need a person to do one of the following:

  1. Watch and transcribe a video
  2. Watch a video and correct speech recognition errors (e.g. "Rest in Peas" for "Rest in Peace")
  3. Have a videographer watch and repeat the words on the video through her or his trained speech recognition speech system

Note that all of the above assume that someone is spending time re-watching the video. Ugh!

Could an Easy Button be Coming?

What we are all waiting for is the captioning "Easy Button" that will allow use to upload any video file and presto - get back a reasonably accurate transcription regardless of the speaker.

The good news is that Norwegian University of Science and Technology (NTNU) has been working on new speech recognition algorithms. Unlike previous systems, it appears that this one will include a little more old-fashioned phonetic and phonological information and won't be quite as reliant on statistical models.

It still might not be perfect. As with current systems, you will need high quality recordings so the right amount of phonetic information can be retrieved. I suspect that any speaker outside known linguistic parameters (e.g. a speaker with an undocumented accent) will still be able to throw off the system.

But I am glad that linguistics is being included in the solution.

Badges in Comments

| | Comments (0)

I've been exploring the Grademark tools in Turnitin which includes comments and realized that they could that comments could maybe be....Badges.

Just to briefly describe the tool, Grademark allows instructor to drag comments onto a paper (like the well-known "ΒΆ" and "Awk." comments of writing instructors. However, this tool allows instructors to create their own comments, and this is where badgification could come in.

Suppose I am teaching a linguistics course and want to reward the extra effort in a piece of linguistic writing. I could use light hearted comments to reward students for going the extra mile. For instance, if a student included non-English data with the correct accent marks or in an authentic script, they could get the "Script Master" badge, while those who record audio could get a "Podcaster" badge.

It's not a full badge system, but it's a way to leverage a feedback system to be a little more badge like.