نتایج جستجو برای: relational and uncertain data streams
تعداد نتایج: 17034420 فیلتر نتایج به سال:
iv abstract this study examined the linguistic behaviors of two iranian efl teachers each of them teaching learners of two similar proficiency levels, a beginner level and an intermediate level, to investigate the relationship between the learners proficiency levels and the amounts and purposes for l1 use by the two teachers. the study was carried out to investigate whether there were differe...
he Map/Reduce framework-a parallel processing paradigm-is widely being used for large scale distributed data processing. Map/Reduce can perform typical relational database operations like selection, aggregation, and projection etc. However, binary relational operators like join, cartesian product, and set operations are difficult to implement with Map/Reduce. Map/Reduce can process homogeneous ...
Currently, considerable body of work exists on stream data processing. Research on data streams varies from algorithms for computing various operators on streams to the design of architectures and implementation of systems for large scale stream processing. Most of the work has focused on the use of queues with traditional query processing operators to handle unpredictable, real-time processing...
the study of air infiltration into the buildings is important from several perspectives that may be noted to energy and design of hvac systems, indoor air quality and thermal comfort and design of smoke control systems. given the importance of this issue, an experimental and numerical study of air infiltration through conventional doors and windows has been explored in iran. to this end, at fir...
with the increasing population and the need for more food, as well as with the development of science and technology, human approach to unnatural and often chemical inputs to increase agricultural production has been a great expansion and problems such as increased cancers, chronic diseases has created environmental pollution. implementation of organic organic is a solution to these problems . ...
The integration of information retrieval (IR) and database systems requires a data model which allows for modelling documents as entities, representing uncertainty and vagueness and performing uncertain inference. For this purpose, we present a probabilistic data model based on relations in non-rst-normal-form (NF2). Here, tuples are assigned probabilistic weights giving the probability that a ...
the aim of this thesis is an approach for assessing insurer’s solvency for iranian insurance companies. we use of economic data with both time series and cross-sectional variation, thus by using the panel data model will survey the insurer solvency.
This article proposes an approach to rely on the standard operators of relational algebra (including grouping and aggregation) for processing complex event without requiring window specifications. In this way the approach can process complex event queries of the kind encountered in applications such as emergency management in metro networks. This article presents Temporal Stream Algebra (TSA) w...
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