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There are many ways that one can get data on police officers, here are a few ideas:
- Body cameras if the footage can be FOIAed in your state
- Public cameras operated by police. Try to FOIA for camera data from times and locations there are likely to be police officers in public spaces (e.g. during the day near police departments). Resolution might be an issue, but it's worth a shot, and many surveillance camears do have zoom capability.
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"Data Quality using Crowdsourcing Techniques" - http://gureckislab.org/mtworkshop/
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Crowdflower
Once data is uploaded to the platform, the system automatically allocates the work to contributors and tests them against known answers hidden within the task (what CrowdFlower refers to as a "job" [5]). The way in which contributors perform on these hidden test questions calibrates how much the system trusts them on an individual level. As long as contributors remain trusted they're allowed to continue working on a given job. If they become untrusted, they're removed from the job and all of their work is disregarded. Multiple contributor judgments are collected and an aggregate answer with an associated confidence score (agreement of the contributors weighted by the trust of each contributor) is provided as a result - effectively returning the "most trusted judgment," for a given unit of data.