6 citations · 22 across the 19 of their papers we have counts for
5 papers · 1 filter
Path discovery by Querying the federation of Relational Database and RDF Graph
Xiaowang Zhang, Jiahui Zhang, Muhammad Qasim Yasin +2
The class of queries for detecting path is an important as those can extract implicit binary relations over the nodes of input graphs. Most of the path querying languages used by t…
PIWD: A Plugin-based Framework for Well-Designed SPARQL
Xiaowang Zhang, Zhenyu Song, Zhiyong Feng +1
In the real world datasets (e.g.,DBpedia query log), queries built on well-designed patterns containing only AND and OPT operators (for short, WDAO-patterns) account for a large pr…
RORS: Enhanced Rule-based OWL Reasoning on Spark
Zhihui Liu, Zhiyong Feng, Xiaowang Zhang +2
The rule-based OWL reasoning is to compute the deductive closure of an ontology by applying RDF/RDFS and OWL entailment rules. The performance of the rule-based OWL reasoning is of…
Efficient Approximation of Well-Designed SPARQL Queries
Zhenyu Song, Zhiyong Feng, Xiaowang Zhang +2
Query response time often influences user experience in the real world. However, it possibly takes more time to answer a query with its all exact solutions, especially when it cont…
On the Statistical Analysis of Practical SPARQL Queries
Xingwang Han, Zhiyong Feng, Xiaowang Zhang +3
In this paper, we analyze some basic features of SPARQL queries coming from our practical world in a statistical way. These features include three statistic features such as the oc…