I am currently involved in the research area of big data and cloud data management. My main research interests are summarized as follows:
Economics and principles of big data analytics, long-running queries and intermediate results, scientific data, heterogeneous data formats and storage, graph-based queries, data and workload migration.
Data management services, cloud federations, cloud economy, computation-intensive queries, database as a service, metadata management, service management, data placement, data privacy and reliability, data and workload migration.
P2P overlays structured and unstructured, multidimensional data sharing, peer data management systems, data and processing heterogeneity, query processing, query answering and rewriting, continuous queries, mobile peer environments, data privacy.
Semantic query processing, semantic similarity, ontology mapping, semantic annotation, semantic clustering, semantic integration.
Distributed and federated databases, grid computing, massive information sharing, P2P systems, distributed query processing, query optimization, distributed triggers, distributed data coordination, cloud computing, social networks.
Query languages, active mechanisms, query optimization, querying on semi-structured and unstructured data, data and schema heterogeneity and integration, schema mapping and data exchange.
Spatial data and queries, information integration and exchange, mobile databases, data streams, privacy and security, sensor networks, querying and processing graphs, location-based services.