Video - Quadrant of Euphoria
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Reward (to participants):
(For example, $0.01)
Open to Public:
What does "Open to Public" mean?
If a profile is set to "Open to Public", it is listed on the index page of Quadrant of Euphoria so that everyone can see it.
Please make sure that your profile settings clearly address your need and don't forget to prepare the test files before you open your profile to public!
- One URL per line
Separate datasets with "--"
Supported file type(s): FLV, AVI
How to use multiple datasets?
You can ask participants to perform comparisons on multiple datasets in a single experiment by using the "Mixing Datasets" option.
To enable it please put a "--" line between datasets you provide. The images/audio clips/video clips in different datasets will not be compared.
Assume two datasets are mixed with size n and m respectively, there will be C(n,2)+C(m,2) rather than C(n+m,2) comparisons.
Supported file type(s)?
Video formats supported by Adobe Flash Player 9.0 are ideal for the experiment. We suggest you use FLV or H.264 compression to ensure smooth playback on the participant side.
Do I mix datasets or not?
You can let experiment participants test one dataset by another or just mix them up as one big dataset.
Show Verification Code:
Show Verification Code when experiment is completed
What is Verification Code?
If your experiment pays participants, Verification Code may save your time.
A participant can prove completion of the experiment by sending his/her Verification Code back to you.
The codes are also present in the names of log files, so you can check out if a participant has consistently completed the experiment.
TSR Threshold (0~100):
What is TSR Threshold?
TSR (Transitivity Satisfaction Rate) is a measure of whether a participant uses the same logic in comparing different data pairs. If a participant's TSR is high, it means he/she has been consistently choosing the better image/audio/video throughout the experiment.
You can set a threshold for TSR to ensure that participants focus on the experiment and produce acceptable results.
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Quadrant of Euphoria
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