Saatviga Sudhahar
2019
Reasoning Over Paths via Knowledge Base Completion
Saatviga Sudhahar
|
Andrea Pierleoni
|
Ian Roberts
Proceedings of the Thirteenth Workshop on Graph-Based Methods for Natural Language Processing (TextGraphs-13)
Reasoning over paths in large scale knowledge graphs is an important problem for many applications. In this paper we discuss a simple approach to automatically build and rank paths between a source and target entity pair with learned embeddings using a knowledge base completion model (KBC). We assembled a knowledge graph by mining the available biomedical scientific literature and extracted a set of high frequency paths to use for validation. We demonstrate that our method is able to effectively rank a list of known paths between a pair of entities and also come up with plausible paths that are not present in the knowledge graph. For a given entity pair we are able to reconstruct the highest ranking path 60% of the time within the top 10 ranked paths and achieve 49% mean average precision. Our approach is compositional since any KBC model that can produce vector representations of entities can be used.
2012
ElectionWatch: Detecting Patterns in News Coverage of US Elections
Saatviga Sudhahar
|
Thomas Lansdall-Welfare
|
Ilias Flaounas
|
Nello Cristianini
Proceedings of the Demonstrations at the 13th Conference of the European Chapter of the Association for Computational Linguistics
Search