Hancock: a language for extracting signatures from data streams
Proceedings of the sixth ACM SIGKDD international conference on Knowledge discovery and data mining
Trajectory sampling for direct traffic observation
IEEE/ACM Transactions on Networking (TON)
An Introduction to the Theory of Computation
An Introduction to the Theory of Computation
Processing XML Streams with Deterministic Automata
ICDT '03 Proceedings of the 9th International Conference on Database Theory
Efficient Filtering of XML Documents for Selective Dissemination of Information
VLDB '00 Proceedings of the 26th International Conference on Very Large Data Bases
EDBT '02 Proceedings of the Worshops XMLDM, MDDE, and YRWS on XML-Based Data Management and Multimedia Engineering-Revised Papers
An XML query engine for network-bound data
The VLDB Journal — The International Journal on Very Large Data Bases
The complexity of XPath query evaluation
Proceedings of the twenty-second ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
XPath queries on streaming data
Proceedings of the 2003 ACM SIGMOD international conference on Management of data
Efficient Filtering of XML Documents with XPath Expressions
ICDE '02 Proceedings of the 18th International Conference on Data Engineering
Containment and equivalence for a fragment of XPath
Journal of the ACM (JACM)
The XML Stream Query Processor SPEX
ICDE '05 Proceedings of the 21st International Conference on Data Engineering
On the memory requirements of XPath evaluation over XML streams
PODS '04 Proceedings of the twenty-third ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Buffering in query evaluation over XML streams
Proceedings of the twenty-fourth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
An Efficient XPath Query Processor for XML Streams
ICDE '06 Proceedings of the 22nd International Conference on Data Engineering
Forward node-selecting queries over trees
ACM Transactions on Database Systems (TODS)
Attribute grammars for scalable query processing on XML streams
The VLDB Journal — The International Journal on Very Large Data Bases
Efficient algorithms for processing XPath queries
VLDB '02 Proceedings of the 28th international conference on Very Large Data Bases
A transducer-based XML query processor
VLDB '02 Proceedings of the 28th international conference on Very Large Data Bases
Data stream query processing: a tutorial
VLDB '03 Proceedings of the 29th international conference on Very large data bases - Volume 29
Machine models and lower bounds for query processing
Proceedings of the twenty-sixth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
The GCX system: dynamic buffer minimization in streaming XQuery evaluation
VLDB '07 Proceedings of the 33rd international conference on Very large data bases
Stream firewalling of xml constraints
Proceedings of the 2008 ACM SIGMOD international conference on Management of data
ACM Computing Surveys (CSUR)
Bounded Delay and Concurrency for Earliest Query Answering
LATA '09 Proceedings of the 3rd International Conference on Language and Automata Theory and Applications
Ordered Backward XPath Axis Processing against XML Streams
XSym '09 Proceedings of the 6th International XML Database Symposium on Database and XML Technologies
Processing XPath queries with forward and downward axes over XML streams
Proceedings of the 13th International Conference on Extending Database Technology
Completing queries: rewriting of incomplete web queries under schema constraints
RR'07 Proceedings of the 1st international conference on Web reasoning and rule systems
Efficient and expressive tree filters
FSTTCS'07 Proceedings of the 27th international conference on Foundations of software technology and theoretical computer science
Earliest query answering for deterministic nested word automata
FCT'09 Proceedings of the 17th international conference on Fundamentals of computation theory
Four lessons in versatility or how query languages adapt to the web
Semantic techniques for the web
Machine models for query processing
ACM SIGMOD Record
Efficient evaluation of generalized tree-pattern queries on XML streams
The VLDB Journal — The International Journal on Very Large Data Bases
Queries on Xml streams with bounded delay and concurrency
Information and Computation
Memory lower bounds for XPath evaluation over XML streams
Journal of Computer and System Sciences
Streamable fragments of forward XPath
CIAA'11 Proceedings of the 16th international conference on Implementation and application of automata
Chimera: stream-oriented XML filtering/querying engine
DASFAA'10 Proceedings of the 15th international conference on Database Systems for Advanced Applications - Volume Part II
Eager XPath evaluation over XML streams
SPIRE'12 Proceedings of the 19th international conference on String Processing and Information Retrieval
Energy and Latency Efficient Access of Wireless XML Stream
Journal of Database Management
A survey on XML streaming evaluation techniques
The VLDB Journal — The International Journal on Very Large Data Bases
Early nested word automata for XPath query answering on XML streams
CIAA'13 Proceedings of the 18th international conference on Implementation and Application of Automata
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Streams are preferable over data stored in memory in contexts where data is too large or volatile, or a standard approach to data processing based on storing is too time or space consuming. Emerging applications such as publish-subscribe systems, data monitoring in sensor networks, financial and traffic monitoring, and routing of MPEG-7 call for querying streams. In many such applications, XML streams are arguably more appropriate than flat streams, for they convey (possibly unbounded) unranked ordered trees with labeled nodes. However, the flexibility enabled by XML streams in data modeling makes query evaluation different from traditional settings and challenging. This paper describes SPEX, a streamed and progressive evaluation of XML Path Language (XPath). SPEX compiles queries into networks of simple and independent transducers and processes XML streams with polynomial combined complexity. This makes SPEX especially suitable for implementation on devices with low memory and simple logic as used, for example, in mobile computing.