6 citations · 22 across the 19 of their papers we have counts for
12 papers · 1 filter
gSMat: A Scalable Sparse Matrix-based Join for SPARQL Query Processing
Xiaowang Zhang, Mingyue Zhang, Peng Peng +3
Resource Description Framework (RDF) has been widely used to represent information on the web, while SPARQL is a standard query language to manipulate RDF data. Given a SPARQL quer…
TrQuery: An Embedding-based Framework for Recommanding SPARQL Queries
Lijing Zhang, Xiaowang Zhang, Zhiyong Feng
In this paper, we present an embedding-based framework (TrQuery) for recommending solutions of a SPARQL query, including approximate solutions when exact querying solutions are not…
MapSQ: A MapReduce-based Framework for SPARQL Queries on GPU
Jiaying Feng, Xiaowang Zhang, Zhiyong Feng
In this paper, we present a MapReduce-based framework for evaluating SPARQL queries on GPU (named MapSQ) to large-scale RDF datesets efficiently by applying both high performance.…
hMDAP: A Hybrid Framework for Multi-paradigm Data Analytical Processing on Spark
Xiaowang Zhang, Jiahui Zhang, Zhiyong Feng
We propose hMDAP, a hybrid framework for large-scale data analytical processing on Spark, to support multi-paradigm process (incl. OLAP, machine learning, and graph analysis etc.)…
PRSP: A Plugin-based Framework for RDF Stream Processing
Qiong Li, Xiaowang Zhang, Zhiyong Feng
In this paper, we propose a plugin-based framework for RDF stream processing named PRSP. Within this framework, we can employ SPARQL query engines to process C-SPARQL queries with…
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…
Context-Free Path Queries on RDF Graphs
Xiaowang Zhang, Zhiyong Feng, Xin Wang +2
Navigational graph queries are an important class of queries that canextract implicit binary relations over the nodes of input graphs. Most of the navigational query languages used…
On the satisfiability problem for SPARQL patterns
Xiaowang Zhang, Jan Van den Bussche, François Picalausa
The satisfiability problem for SPARQL patterns is undecidable in general, since the expressive power of SPARQL 1.0 is comparable with that of the relational algebra. The goal of th…