PigSPARQL - Mapping SPARQL to Pig Latin
Cascading Map-Side Joins over HBase for Scalable Join Processing
Sempala - Interactive SPARQL Query Processing on Hadoop
Map-Side Merge Joins for Scalable SPARQL BGP Processing
PigSPARQL: A SPARQL Query Processing Baseline for Big Data
RDF Constraint Checking using RDF Data Descriptions (RDD)