BTS is a platform to test various peer prediction mechanisms on crowdsourcing platforms.

Researchers wishing to use the platform can supply a list of questions, create small HTML templates for the UI and specify the payment mechanism. BTS does the rest.

• Each agent sees a different random permutation of the questions
• Multiple agents may work on the same question. Payment mechanism may rely on all answers in that round
• GUI to set up the experiment (beta feature)
• Built using the Meteor framework with MongoDB
• Export data from the experiments in a CSV format.

To install a local copy of the platform, follow these instructions:

1. Install Meteor.

2. Install Docker

3. Clone the directory:

   git clone https://github.com/CdavM/bts bts/
   

4. Start your app with the docker run command.

5. Navigate to /setup to configure the experiment

It is possible to deploy the platform via Amazon AWS. Once you provision a Ubuntu instance (14.04 LTS), follow the instructions above.

Multiple experiments have been deployed with this platform:

• Iterative decision making under various utility models [Stanford University]: https://github.com/cdavm/harp
• Rewarding truthfulness with inversely proportional rewards [UC Berkeley]: https://github.com/CdavM/purple/
• Comparing output agreement mechanisms to state-of-the-art [UC Berkeley]: The master branch contains this experiment as the default setup.
• Comparing the confusion of agents: https://github.com/CdavM/bts/tree/comparison

Feel free to open pull requests or issues on GitHub should you notice any bugs.

This platform is licensed under the GPL 3.0 license.