Search Results for author: Joshua Lockhart

Found 9 papers, 0 papers with code

Learn to explain yourself, when you can: Equipping Concept Bottleneck Models with the ability to abstain on their concept predictions

no code implementations21 Nov 2022 Joshua Lockhart, Daniele Magazzeni, Manuela Veloso

The Concept Bottleneck Models (CBMs) of Koh et al. [2020] provide a means to ensure that a neural network based classifier bases its predictions solely on human understandable concepts.

Towards learning to explain with concept bottleneck models: mitigating information leakage

no code implementations7 Nov 2022 Joshua Lockhart, Nicolas Marchesotti, Daniele Magazzeni, Manuela Veloso

Concept bottleneck models perform classification by first predicting which of a list of human provided concepts are true about a datapoint.

Feature Importance for Time Series Data: Improving KernelSHAP

no code implementations5 Oct 2022 Mattia Villani, Joshua Lockhart, Daniele Magazzeni

Feature importance techniques have enjoyed widespread attention in the explainable AI literature as a means of determining how trained machine learning models make their predictions.

Event Detection Feature Importance +2

Reductive MDPs: A Perspective Beyond Temporal Horizons

no code implementations15 May 2022 Thomas Spooner, Rui Silva, Joshua Lockhart, Jason Long, Vacslav Glukhov

Solving general Markov decision processes (MDPs) is a computationally hard problem.

Asynchronous Collaborative Learning Across Data Silos

no code implementations23 Mar 2022 Tiffany Tuor, Joshua Lockhart, Daniele Magazzeni

Our proposed approach enhances conventional federated learning techniques to make them suitable for this asynchronous training in this intra-organisation, cross-silo setting.

BIG-bench Machine Learning Federated Learning

SURF: Improving classifiers in production by learning from busy and noisy end users

no code implementations12 Oct 2020 Joshua Lockhart, Samuel Assefa, Ayham Alajdad, Andrew Alexander, Tucker Balch, Manuela Veloso

We show that conventional crowdsourcing algorithms struggle in this user feedback setting, and present a new algorithm, SURF, that can cope with this non-response ambiguity.

Some people aren't worth listening to: periodically retraining classifiers with feedback from a team of end users

no code implementations27 Apr 2020 Joshua Lockhart, Samuel Assefa, Tucker Balch, Manuela Veloso

Document classification is ubiquitous in a business setting, but often the end users of a classifier are engaged in an ongoing feedback-retrain loop with the team that maintain it.

Document Classification

On the Importance of Opponent Modeling in Auction Markets

no code implementations28 Nov 2019 Mahmoud Mahfouz, Angelos Filos, Cyrine Chtourou, Joshua Lockhart, Samuel Assefa, Manuela Veloso, Danilo Mandic, Tucker Balch

The dynamics of financial markets are driven by the interactions between participants, as well as the trading mechanisms and regulatory frameworks that govern these interactions.

Hierarchical quantum classifiers

no code implementations10 Apr 2018 Edward Grant, Marcello Benedetti, Shuxiang Cao, Andrew Hallam, Joshua Lockhart, Vid Stojevic, Andrew G. Green, Simone Severini

Quantum circuits with hierarchical structure have been used to perform binary classification of classical data encoded in a quantum state.

Quantum Physics

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