Description

Module for dependency-driven SPARQL template generation from natural language, for English and Korean. It takes in a question and generates pseudo-queries as well as a list of strings (so-called slots) for which data from the knowledge base is needed.

Approach

First, the question is linguistically analysed, annotating it with part-of-speech tags, dependency relations, and semantic role labels. Second, the resulting parse tree is transformed into a template, covering one possibility of the how natural language expressions correspond to constructs in the target SPARQL query. This is the template that is most faithful to the linguistic structure of the question.

The scoring of the templates follows a simple heuristics computing the number of nodes in the query body that are neither projection variables nor slots.

A documentation of the rule format can be found in the GitHub repository: https://github.com/okbqa/rocknrole/tree/master/src/main/resources/rules

Scope and limit

How to deploy it

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