Search Results for author: Benjamin Fish

Found 7 papers, 1 papers with code

On Performance Discrepancies Across Local Homophily Levels in Graph Neural Networks

no code implementations8 Jun 2023 Donald Loveland, Jiong Zhu, Mark Heimann, Benjamin Fish, Michael T. Schaub, Danai Koutra

We ground the practical implications of this work through granular analysis on five real-world datasets with varying global homophily levels, demonstrating that (a) GNNs can fail to generalize to test nodes that deviate from the global homophily of a graph, and (b) high local homophily does not necessarily confer high performance for a node.

Node Classification

It's Not Fairness, and It's Not Fair: The Failure of Distributional Equality and the Promise of Relational Equality in Complete-Information Hiring Games

no code implementations12 Sep 2022 Benjamin Fish, Luke Stark

Existing efforts to formulate computational definitions of fairness have largely focused on distributional notions of equality, where equality is defined by the resources or decisions given to individuals in the system.

Fairness

On the Complexity of Learning from Label Proportions

no code implementations7 Apr 2020 Benjamin Fish, Lev Reyzin

In the problem of learning with label proportions, which we call LLP learning, the training data is unlabeled, and only the proportions of examples receiving each label are given.

PAC learning

Sampling Without Compromising Accuracy in Adaptive Data Analysis

no code implementations28 Sep 2017 Benjamin Fish, Lev Reyzin, Benjamin I. P. Rubinstein

In this work, we study how to use sampling to speed up mechanisms for answering adaptive queries into datasets without reducing the accuracy of those mechanisms.

A supervised approach to time scale detection in dynamic networks

no code implementations24 Feb 2017 Benjamin Fish, Rajmonda S. Caceres

We introduce a framework that tackles both of these issues: By measuring the performance of the time scale detection algorithm based on how well a given task is accomplished on the resulting network, we are for the first time able to directly compare different time scale detection algorithms to each other.

A Confidence-Based Approach for Balancing Fairness and Accuracy

1 code implementation21 Jan 2016 Benjamin Fish, Jeremy Kun, Ádám D. Lelkes

To help to distinguish between these naive algorithms and more sensible algorithms we propose a new measure of fairness, called resilience to random bias (RRB).

Fairness

Handling oversampling in dynamic networks using link prediction

no code implementations24 Apr 2015 Benjamin Fish, Rajmonda S. Caceres

We show that not only does oversampling affect the quality of link prediction, but that we can use link prediction to recover from the effects of oversampling.

Link Prediction

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