Closed dingaaling closed 4 months ago
Notes from 1 Dec convo:
- Automated decision making optimised for prediction
- Integrating the states/actions you can take into the assessment of risk
Great Summary! Some more quick thoughts (to be worked out more in detail):
This is the paper I mentioned, that describes the extensive critique on automated decision making systems that are optimized for prediction Wang, Angelina, et al. "Against predictive optimization: On the legitimacy of decision-making algorithms that optimize predictive accuracy." Available at SSRN (2022).
some points made in the paper relevant for the HEV framework:
"The most common [distribution shift ]is that the training population is different from the target population in important ways, e.g., due to differences in geography."
"where the variable used as a proxy for the desired outcome does not accurately represent it, can lead to inaccurate and biased predictions."
Some fairness and ethics considerations mentioned in the paper:
practices towards ensuring solutions target vulnerable demographics that could be "assured"
And here the other paper that continues this line of research but then argues for taking into account the action space: Liu, Lydia T., et al. "On the Actionability of Outcome Prediction." arXiv preprint arXiv:2309.04470 (2023).
haven't read yet but might be interesting in that context. From the abstract: "Making measurements of actionable latent states, where specific actions lead to desired outcomes, considerably enhances the action value compared to outcome prediction, and the degree of improvement depends on action costs and the outcome model. This analysis emphasizes the need to go beyond generic outcome prediction in interventional settings by incorporating knowledge of plausible actions and latent states. "
Have started to draft a case study to be completed with Ruth & Alisha here: https://hackmd.io/wTGdj2_3R1eE6lUJqWIy-A
Very helpful to have these notes shared and some of the links brought together.
Seeing the HEV framework, especially, is particularly instructive as it provides an additional framework onto which specific biases (and ethical issues more generally) can be mapped.
For instance, representation bias
could obviously occur between the hazard identification and exposure stages. Similar to an example I used in a talk at the Met Office last year.
Figure 1—HEV framework
Figure 2—graphic showing how placement of radar sensor to detect storm risks, unintentionally created racial bias by underrepresenting black communities
Proposed process: