Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Mostafa S. Haghjoo"'
Publikováno v:
PLoS ONE, Vol 10, Iss 6, p e0130693 (2015)
Maintaining privacy in network data publishing is a major challenge. This is because known characteristics of individuals can be used to extract new information about them. Recently, researchers have developed privacy methods based on k-anonymity and
Externí odkaz:
https://doaj.org/article/ebda22cd330c47f5b1a48aae869ff1ac
Publikováno v:
International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems. 21:695-722
Many emerging applications need continuous querying over uncertain event streams, mostly for online monitoring. These streaming uncertain events may come from radars, sensors, or even software hooks. The uncertainty is usually due to measurement erro
Publikováno v:
International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems. 20:701-728
Inherent imprecision of data in many applications motivates us to support uncertainty as a first-class concept. Data stream and probabilistic data have been recently considered noticeably in isolation. However, there are many applications including s
Publikováno v:
Distributed and Parallel Databases. 30:145-176
In this paper, a method for fast processing of data stream tuples in parallel execution of continuous queries over a multiprocessing environment is proposed. A copy of the query plan is assigned to each of processing units in the multiprocessing envi
Publikováno v:
Data & Knowledge Engineering. 72:31-62
XML is a tree-based data representation format which combines data and structure. Therefore, XML queries not only contain predicates to filter data but also refer to relationships between document elements searched. The existing elements in an XML qu
Autor:
Ali Asghar Safaei, Mostafa S. Haghjoo
Publikováno v:
The Journal of Supercomputing. 61:619-641
Data stream is a continuous, rapid, time-varying sequence of data elements which should be processed in an online manner. These matters are under research in Data Stream Management Systems (DSMSs). Single processor DSMSs cannot satisfy data stream ap
Autor:
Ali Asghar Safaei, Mostafa S. Haghjoo
Publikováno v:
Distributed and Parallel Databases. 28:93-118
In this paper, we propose parallel processing of continuous queries over data streams to handle the bottleneck of single processor DSMSs. Queries are executed in parallel over the logical machines in a multiprocessing environment. Scheduling parallel
Publikováno v:
Data & Knowledge Engineering. 68:126-145
XML queries are frequently based on path expressions where their elements are connected to each other in a tree-pattern structure, called query tree pattern (QTP). Therefore, a key operation in XML query processing is finding those elements which mat
Autor:
Mehri Rajaei, Mostafa S. Haghjoo
Publikováno v:
2015 7th Conference on Information and Knowledge Technology (IKT).
The main problem in releasing sensitive data to public networks and domains is how to publish data while protecting privacy and permitting useful analysis. This problem is known as privacy-preserving data publishing. In the well-known (α,β)-privacy
Autor:
Majid Ghayoori, Mostafa S. Haghjoo
Publikováno v:
COMPUTING AND INFORMATICS; Vol 32, No 3 (2013): Computing and Informatics; 549-571
Despite the fact that using the services of outsourced data stream servers has been welcomed extremely, still the problem of obtaining assurance about the received results from these untrusted servers in unsecure environment is one of the basic chall