Discover and read the best of Twitter Threads about #fat2020
Most recents (10)
🏅 And the #FAT2020 Best Paper Awards... 🏅1/
Best CS paper: Kate Donahue and Jon Kleinberg, Fairness and Utilization in Allocating Resources with Uncertain Demand dl.acm.org/doi/abs/10.114… 2/ 
Best non-CS track paper: What does it mean to ‘solve’ the problem of discrimination in hiring? Javier Sánchez-Monedero, @LinaDencik and @lilianedwards dl.acm.org/doi/abs/10.114… 3/
Next up excited for @KLdivergence with a risk assessment tool analysis on “overbooking”. This is when someone is arrested on charges that are more serious than they should be. First off: there’s very little accountability so this is gonna be a hard problem to address. #FAT2020
Guess what? There is a lot of racial disparity in this. I’ll say... But again, this is hard to address because there’s no real “ground truth”. It’s complicated and we can attack the issue by looking at actual convictions vs. accusations.
So let’s look at the pre-trial risk assessment algos. One in particular in the USA is made of many models that output a score. Green = freedom. Red = you go to jail.
Next up, something I’m very interested in: bias in hiring algorithms. Can it be made better? #FAT2020 with @manish_raghavan we’re gonna find out.
Looking at vendors like HireVue and others, specifically all their publicly available information on steps they’ve taken to “de-bias”.
One in particular, a video interview platform, scores people on how they answer questions. This is bad, but it’s not the only bad thing in the space (ugh, lol). Another example grades your online behavior playing a little game....... to predict your job performance???
Talk by Chris Sweeney at #FAT2020 on "Reducing sentiment polarity for demographic attributes in word embeddings using adversarial learning," with @Maryam_Najafian.
There are several types of bias encoded in language models, and this paper focuses on sentiment bias, where certain identity terms encode a more positive sentiment than others. #FAT2020
Various papers have studied the different possible sources of this bias, and this paper focuses on the word vectors themselves. #FAT2020
Quote of the day at #FAT2020:
So far my key takeaway from this conference is that anthropologists are absolutely vital to this process. A call to “study up” is to contextualize a process by studying its situation within systems.
Our work (in data) is tangled in larger social and political struggles. Tendency is to gaze “down” focusing on the powerless for “social good”. It happens (as an example) when we try to study criminal tendencies rather than the bias of the policing systems that criminalize.
Ok now how do we make it more fair? Kit Rodolfa at #FAT2020: recidivism algorithms.
Too true: anything you optimize for will have a down side. In this case, let’s look at recall optimization. In other words, equal rates of finding those who will actually re-offend, regardless of race (I think? Might have that backwards...)
Surprise! One size fits all doesn’t work. Perhaps different thresholds will improve equity to cater to different groups who have different needs?
Exciting to see more discussion of protected classes as counterfactual (just changing M to F isn’t enough to realistically audit discriminatory processes) #FAT2020
One potential solution “FlipTest” maps individuals to their reflected alter of a different gender (or other demographic trait) in a comparable distribution of individuals. Interesting.
Auditing: look at distributions of subgroups and those who would gain a good outcome in one case and bad in another (and vice versa)... ‼️
Fairness now at #FAT2020 starting off with a really important question: what do you do if you don’t collect demographic data?
Proxy methods like BISG can be used to infer the category, but that means that all auditing is vulnerable to the particularities/problems in the proxy method.
Maybe you have access to an auxiliary dataset like a census file. How effective would that be?
Explainability up next (!) at #FAT2020 with @JcMalgieri and @MargotKaminski paper on GDPR and impact assessments.
No public consensus on the Right to Explanation but lawyers wanted automated decision making to be justified based on fairness.
Data controllers must assess risks since GDPR states that higher risk cases require higher safeguards. Here are some examples of duties:
Data sheets and model cards aren’t enough. Design decisions must be examined. Especially in large, complex systems with multiple algorithms.
Too much to cover today but READ THE PAPER! Failure modes and effect up next.
