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KGxBoard: Explainable and Interactive Leaderboard for Evaluation of Knowledge Graph Completion Models

23 August 2022
Haris Widjaja
Kiril Gashteovski
Wiem Ben-Rim
Pengfei Liu
Christopher Malon
Daniel Ruffinelli
Carolin (Haas) Lawrence
Graham Neubig
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Abstract

Knowledge Graphs (KGs) store information in the form of (head, predicate, tail)-triples. To augment KGs with new knowledge, researchers proposed models for KG Completion (KGC) tasks such as link prediction; i.e., answering (h; p; ?) or (?; p; t) queries. Such models are usually evaluated with averaged metrics on a held-out test set. While useful for tracking progress, averaged single-score metrics cannot reveal what exactly a model has learned -- or failed to learn. To address this issue, we propose KGxBoard: an interactive framework for performing fine-grained evaluation on meaningful subsets of the data, each of which tests individual and interpretable capabilities of a KGC model. In our experiments, we highlight the findings that we discovered with the use of KGxBoard, which would have been impossible to detect with standard averaged single-score metrics.

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