A Critical Assessment of State-of-the-Art in Entity Alignment

30 Oct 2020  ·  Max Berrendorf, Ludwig Wacker, Evgeniy Faerman ·

In this work, we perform an extensive investigation of two state-of-the-art (SotA) methods for the task of Entity Alignment in Knowledge Graphs. Therefore, we first carefully examine the benchmarking process and identify several shortcomings, which make the results reported in the original works not always comparable. Furthermore, we suspect that it is a common practice in the community to make the hyperparameter optimization directly on a test set, reducing the informative value of reported performance. Thus, we select a representative sample of benchmarking datasets and describe their properties. We also examine different initializations for entity representations since they are a decisive factor for model performance. Furthermore, we use a shared train/validation/test split for a fair evaluation setting in which we evaluate all methods on all datasets. In our evaluation, we make several interesting findings. While we observe that most of the time SotA approaches perform better than baselines, they have difficulties when the dataset contains noise, which is the case in most real-life applications. Moreover, we find out in our ablation study that often different features of SotA methods are crucial for good performance than previously assumed. The code is available at https://github.com/mberr/ea-sota-comparison.

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Results from the Paper

Task Dataset Model Metric Name Metric Value Global Rank Uses Extra
Training Data
Result Benchmark
Entity Alignment dbp15k fr-en Zero Shot Hits@1 0.8370 # 5
Entity Alignment dbp15k ja-en Zero Shot Hits@1 0.6564 # 6
Entity Alignment DBP15k zh-en RDGCN Hits@1 0.6954 # 14
Entity Alignment DBP15k zh-en Zero Shot Hits@1 0.594 # 19


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