Hi everyone,

This Friday, February 12 at noon Eastern time, the International Methods
Colloquium will host a presentation by Nora Webb Williams (University of
Illinois at Urbana-Champaign). Nora's presentation is entitled "When
Republicans See Red but Democrats Feel Blue: Why Labeler Characteristics
Matter for Image Analysis."

The abstract of the talk is as follows:

Image analysis studies, big or small, rely on human labelers to annotate
> materials. Human annotations inform researchers about what is in the raw
> materials (e.g. pictures of cats, dogs, protests) and also about reactions
> to those materials (e.g. evoked sadness, disgust, enthusiasm).
> Human-generated labels are treated as ground truth for analysis and for the
> training of machine-learning algorithms. However, as we demonstrate in this
> paper, what labelers see and what their reactions are varies based on their
> personal characteristics. Republicans and Democrats, for example, have very
> different emotional reactions to our set of test images, which come from
> 1.8 million tweets and 947,005 attached images relating to thirteen
> left-leaning social movements in the United States. The partisans on
> occasion disagree about which images show protest. We also see significant
> variation between labels from men and women. We show how an analysis of
> retweets using these data changes when different labelers are used. Our
> results emphasize that image analysis researchers must understand the
> differences in their labeler populations to draw accurate inferences.
>

To tune in to the presentation and participate in the discussion after the
talk, visit http://www.methods-colloquium.com/ and click "Watch Now!" on
the day of the talk. To register for the talk in advance, click here:

https://zoom.us/webinar/register/WN_It8T59DdQeyB3ldtUmmqMw

The IMC uses Zoom, which is free to use for listeners and works on PCs,
Macs, and iOS and Android tablets and phones. You can be a part of the talk
from anywhere around the world with access to the Internet. The
presentation and Q&A will last for a total of one hour.

I hope to see you there!

-JE

--

Dr. Justin Esarey
Associate Professor of Politics and International Affairs
Wake Forest University
Voice: (678) 383-9629
Fax: (336) 758-6104
E-mail:  <[log in to unmask]>[log in to unmask]
Web: www.justinesarey.com

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