Search Results for author: Joachim Baumann

Found 8 papers, 5 papers with code

Preventing Eviction-Caused Homelessness through ML-Informed Distribution of Rental Assistance

no code implementations19 Mar 2024 Catalina Vajiac, Arun Frey, Joachim Baumann, Abigail Smith, Kasun Amarasinghe, Alice Lai, Kit Rodolfa, Rayid Ghani

Rental assistance programs provide individuals with financial assistance to prevent housing instabilities caused by evictions and avert homelessness.

Algorithmic Collective Action in Recommender Systems: Promoting Songs by Reordering Playlists

no code implementations19 Mar 2024 Joachim Baumann, Celestine Mendler-Dünner

The success of the collective is measured by the increase in test-time recommendations of the targeted song.

Recommendation Systems

On Prediction-Modelers and Decision-Makers: Why Fairness Requires More Than a Fair Prediction Model

no code implementations9 Oct 2023 Teresa Scantamburlo, Joachim Baumann, Christoph Heitz

We clarify the distinction between the concepts of prediction and decision and show the different ways in which these two elements influence the final fairness properties of a prediction-based decision system.

Decision Making Fairness

A Classification of Feedback Loops and Their Relation to Biases in Automated Decision-Making Systems

1 code implementation10 May 2023 Nicolò Pagan, Joachim Baumann, Ezzat Elokda, Giulia De Pasquale, Saverio Bolognani, Anikó Hannák

By qualitative analysis, and through a simulation example of recommender systems, we show which specific types of ML biases are affected by each type of feedback loop.

Decision Making Fairness +2

Group Fairness in Prediction-Based Decision Making: From Moral Assessment to Implementation

1 code implementation19 Oct 2022 Joachim Baumann, Christoph Heitz

In this paper, we present a step-by-step procedure integrating three elements: (a) a framework for the moral assessment of what fairness means in a given context, based on the recently proposed general principle of "Fair equality of chances" (FEC) (b) a mapping of the assessment's results to established statistical group fairness criteria, and (c) a method for integrating the thus-defined fairness into optimal decision making.

Decision Making Fairness

Enforcing Group Fairness in Algorithmic Decision Making: Utility Maximization Under Sufficiency

1 code implementation5 Jun 2022 Joachim Baumann, Anikó Hannák, Christoph Heitz

We show that group-specific threshold rules are optimal for PPV parity and FOR parity, similar to well-known results for other group fairness criteria.

Decision Making Fairness

Cannot find the paper you are looking for? You can Submit a new open access paper.