The state of the art in distributed query processing
ACM Computing Surveys (CSUR)
Chord: A scalable peer-to-peer lookup service for internet applications
Proceedings of the 2001 conference on Applications, technologies, architectures, and protocols for computer communications
A scalable content-addressable network
Proceedings of the 2001 conference on Applications, technologies, architectures, and protocols for computer communications
Kademlia: A Peer-to-Peer Information System Based on the XOR Metric
IPTPS '01 Revised Papers from the First International Workshop on Peer-to-Peer Systems
Pastry: Scalable, Decentralized Object Location, and Routing for Large-Scale Peer-to-Peer Systems
Middleware '01 Proceedings of the IFIP/ACM International Conference on Distributed Systems Platforms Heidelberg
Peer-to-peer management of XML data: issues and research challenges
ACM SIGMOD Record
Highly distributed XQuery with DXQ
Proceedings of the 2007 ACM SIGMOD international conference on Management of data
Dynamo: amazon's highly available key-value store
Proceedings of twenty-first ACM SIGOPS symposium on Operating systems principles
Locating data sources in large distributed systems
VLDB '03 Proceedings of the 29th international conference on Very large data bases - Volume 29
XRPC: interoperable and efficient distributed XQuery
VLDB '07 Proceedings of the 33rd international conference on Very large data bases
DXQ: a distributed XQuery scripting language
XIME-P '07 Proceedings of the 4th international workshop on XQuery implementation, experience and perspectives
XTreeNet: democratic community search
Proceedings of the VLDB Endowment
XML processing in DHT networks
ICDE '08 Proceedings of the 2008 IEEE 24th International Conference on Data Engineering
An Internet-Scale Service for Publishing and Locating XML Documents
ICDE '09 Proceedings of the 2009 IEEE International Conference on Data Engineering
Locating XML Documents in a Peer-to-Peer Network Using Distributed Hash Tables
IEEE Transactions on Knowledge and Data Engineering
Federated querying architecture for clinical & translational health IT
Proceedings of the 1st ACM International Health Informatics Symposium
Towards large-scale sharing of electronic health records of cancer patients
Proceedings of the 1st ACM International Health Informatics Symposium
Tapestry: a resilient global-scale overlay for service deployment
IEEE Journal on Selected Areas in Communications
A new tool for sharing and querying of clinical documents modeled using HL7 Version 3 standard
Computer Methods and Programs in Biomedicine
The VLDB Journal — The International Journal on Very Large Data Bases
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We present a novel software tool called CDN (Collaborative Data Network) for large-scale sharing and querying of clinical documents modeled using HL7 v3 standard (e.g., Clinical Document Architecture (CDA), Continuity of Care Document (CCD)). Similar to the caBIG initiative, CDN aims to foster innovations in cancer treatment and diagnosis through large-scale, sharing of clinical data. We focus on cancer because it is the second leading cause of deaths in the US. CDN is based on the synergistic combination of peer-to-peer technology and the extensible markup language XML and XQuery. Using CDN, a user can pose both structured queries and keyword queries on the HL7 v3 documents hosted by data providers. CDN is unique in its design - it supports location oblivious queries in a large-scale, network wherein a user does not explicitly provide the location of the data for a query. A location service in CDN discovers data of interest in the network at query time. CDN uses standard cryptographic techniques to provide security to data providers and protect the privacy of patients. Using CDN, a user can pose clinical queries pertaining to cancer containing aggregations and joins across data hosted by multiple data providers. CDN is implemented with open-source software for web application development and XML query processing. We report the evaluation of CDN in a distributed environment (LAN) using a real dataset of discharge summaries available from the i2b2 project.