We consider two popular approaches to Knowledge
Graph Completion (KGC): textual models
that rely on textual entity descriptions, and
structure-based models that exploit the connectivity
structure of the Knowledge Graph
(KG). Preliminary experiments show that these
approaches have complementary strengths:
structure-based models perform exceptionally
well when the gold answer is easily reachable
from the query head in the KG, while textual
models exploit descriptions to give good
performance even when the gold answer is
not easily reachable. In response, we propose
DynaSemble, a novel method for learning
query-dependent ensemble weights to combine
these approaches by using the distributions of
scores assigned by the models in the ensemble
to all candidate entities. DynaSemble achieves
state-of-the-art results on three standard KGC
datasets, with up to 6.8 pt MRR and 8.3 pt
Hits@1 gains over the best baseline model for
the WN18RR dataset.

DynaSemble: Dynamic Ensembling of Textual and Structure-Based Models for Knowledge Graph Completion

High-quality and high-coverage rule sets are imperative to the success of Neuro-Symbolic Knowledge Graph Completion (NS-KGC) models, because they form the basis of all symbolic inferences. Recent literature builds neural models for generating rule sets, however, preliminary experiments show that they struggle with maintaining high coverage. In this work, we suggest three simple augmentations to existing rule sets: (1) transforming rules to their abductive forms, (2) generating equivalent rules that use inverse forms of constituent relations and (3) random walks that propose new rules. Finally, we prune potentially low quality rules. Experiments over four datasets and five ruleset-baseline settings suggest that these simple augmentations consistently improve results, and obtain up to 7.1 pt MRR and 8.5 pt Hits@1 gains over using rules without augmentations.

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Simple Augmentations of Logical Rules for Neuro-Symbolic Knowledge Graph Completion

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poster

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Poster Session 1

### Welcome to ACL 2023, the 61st Annual Meeting of the Association for Computational Linguistics! 
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ACL 2023

The Association for Computational Linguistics (ACL) is the premier international scientific and professional society for people working on computational problems involving human language, a field often referred to as either computational linguistics or natural language processing.

Ananjan Nandi

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SHORT BIO

Presentations

DynaSemble: Dynamic Ensembling of Textual and Structure-Based Models for Knowledge Graph Completion

Simple Augmentations of Logical Rules for Neuro-Symbolic Knowledge Graph Completion

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