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Structured Query Construction via Knowledge Graph Embedding (arxiv.org)
2 points by sel1 on Sep 10, 2019 | hide | past | pdf | discuss on HN

In plain words: It turns a knowledge graph into simple vector coordinates, then uses those to work out a question's query shape and pick the right points and links. This answered complex questions more accurately and faster than the usual question-parsing and graph-search approach.

Abstract

In order to facilitate the accesses of general users to knowledge graphs, an increasing effort is being exerted to construct graph-structured queries of given natural language questions. At the core of the construction is to deduce the structure of the target query and determine the vertices/edges which constitute the query. Existing query construction methods rely on question understanding and conventional graph-based algorithms which lead to inefficient and degraded performances facing complex natural language questions over knowledge graphs with large scales. In this paper, we focus on this problem and propose a novel framework standing on recent knowledge graph embedding techniques. Our framework first encodes the underlying knowledge graph into a low-dimensional embedding space by leveraging generalized local knowledge graphs. Given a natural language question, the learned embedding representations of the knowledge graph are utilized to compute the query structure and assemble vertices/edges into the target query. Extensive experiments were conducted on the benchmark dataset, and the results demonstrate that our framework outperforms state-of-the-art baseline models regarding effectiveness and efficiency.

Ruijie Wang, Meng Wang, Jun Liu, Michael Cochez, Stefan Decker
arXiv:1909.02930 · cs.AI, cs.CL, cs.LG · submitted Sep 6, 2019
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