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Kristian Lum proslijedio/la je TweetHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
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Kristian Lum proslijedio/la je Tweet
PJI releases Updated Position: “We now see that pretrial risk assessment tools, designed to predict an individual’s appearance in court without a new arrest, can no longer be a part of our solution for building equitable pretrial justice systems.” https://www.pretrial.org/wp-content/uploads/Risk-Statement-PJI-2020.pdf …
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Kristian Lum proslijedio/la je Tweet
really important work on how police officers' booking decisions impact a machine-learning-based risk assessment tool. It's by my
@hrdag colleagues---and co-authored by San Francisco's new district attorney,@chesaboudin Recommended!https://twitter.com/KLdivergence/status/1225810113602043905 …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Kristian Lum proslijedio/la je Tweet
Just so you know RStudio conf is Jan 18-21 in Orlando
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There's lots more information and a more detailed explanation of the analysis in the paper. If this is an area you're interested in, I hope you'll take a look. Thanks!
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Why does this matter? This makes obvious how easily police could game the system. Want to keep this person off the street for a while? Just tack on some extra charges at booking-- voila! release not recommended! We need more police accountability for booking decisions.
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Why is this surprising? Only serious charges trigger increases. While it's no surprise that booking charges do not always lead to convictions, it is surprising that charges that are serious enough to impact the tool are routinely tacked on at booking w/o sufficient support.
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To repeat: for about 27% of the cases we analyzed, charges that were ultimately unsubstantiated by the criminal legal process caused the PSA to recommend higher levels of pre-trial supervision.
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We wanted to understand how often booking charges for which the person is ultimately not convicted cause the PSA to issue more restrictive pre-trial supervision conditions. The answer? About 27% of the time.
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As far as we know, these the charges that lead to these increases are based on politics rather than empirical correlations with the outcomes the tool directly predicts.
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To over-simplify a complex process, if the booking charges are serious, the PSA as it is used in SF increases its recommended level of supervision above and beyond what is indicated by the statistical models underlying the tool.
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One of the inputs to the PSA are the booking charges, the charges the police officer reports to the jail as the legal basis for the person's incarceration. There is virtually no oversight, feedback, or accountability around these charges.
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In this paper, we looked at how police officers' booking decisions in San Francisco impacted the outputs of the Public Safety Assessment (PSA)-- a risk assessment tool that is used to make pre-trial recs, i.e. should an arrested person be released and under what conditions.
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Way late here, but I was really pleased to present my recent work with
@StatMegan and@chesaboudin at FAT*2020/FAccT last week. Paper: https://dl.acm.org/doi/pdf/10.1145/3351095.3372846?download=true … Thread:
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Kristian Lum proslijedio/la je TweetHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
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Got to spend some time at WHYY talking about risk assessment. Fangirled so hard when I saw the Fresh Air studio. God, I love public radio.pic.twitter.com/k1NjVIFHxk
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Kristian Lum proslijedio/la je Tweet
Sometimes you need code or math. Sometimes you need sociology. Sometimes you need UX. Sometimes you need law. Sometimes it's hard to figure out which you need. This conference has done a great job of putting people who do various ones of those in the same room
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Kristian Lum proslijedio/la je Tweet
Hm, this is neither true, nor helpful. Many cases where a tech intervention directly contributed to better conditions - incl. advertising and product delivery use case this whole field stemmed from. It's never enough but also certainly not useless work. The field needs all of us!https://twitter.com/jimmyjwu/status/1222813589028950016 …
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Kristian Lum proslijedio/la je Tweet
As long as we don’t splinter into FAccTions or become FAccTotums.
#FAT2020Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Kristian Lum proslijedio/la je Tweet
With the new
#fatconf2020 name we can call ourselves#Facctoids.Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
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