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Ilaria Tiddi

5 accepted papers

2026

Exact Shapley Attributions in Quadratic-time for FANOVA Gaussian Processes

AAAI 2026technical

Shapley values are widely recognized as a principled method for attributing importance to input features in machine learning. However, the exact computation of Shapley values scales exponentially with the number of features, severely limiting the practical application of this powerful approach. The

Cited by 0SourcePDFScholar
2025

Data Augmentation for Instruction Following Policies via Trajectory Segmentation

AAAI 2025technical

The scalability of instructable agents in robotics or gaming is often hindered by limited data that pairs instructions with agent trajectories. However, large datasets of unannotated trajectories containing sequences of various agent behaviour (play trajectories) are often available. In a semi-super…

2025

Support Vector-based Estimation of Multilinear Games for Feature Selection and Explanation

AAAI 2025technical

In recent years, employing Shapley values to compute feature importance has gained considerable attention. Calculating these values inherently necessitates managing an exponential number of parameters—a challenge commonly mitigated through an additivity assumption coupled with linear regression. Thi…

Cited by 0SourcePDFScholar
2025

Unlocking the Game: Estimating Games in Möbius Representation for Explanation and High-Order Interaction Detection

AAAI 2025technical

Shapley value-based explanations are widely utilized to demystify predictions made by opaque models. Approaches to estimating Shapley values often approximate explanation games as inessential and estimate the Shapley value directly as feature attribution with a limited capacity to quantify feature i…

2022

Leveraging Class Abstraction for Commonsense Reinforcement Learning via Residual Policy Gradient Methods

IJCAI 2022poster

Enabling reinforcement learning (RL) agents to leverage a knowledge base while learning from experience promises to advance RL in knowledge intensive domains. However, it has proven difficult to leverage knowledge that is not manually tailored to the environment. We propose to use the subclass relat…