Query evaluation time for timestamp-count
Spatio-Temporal Query Processing on Weighted Timestamp Data Environment
... for time series data, despite the importance of such ...top-k query by a k-NN query with an imaginary reference time series that has the largest domain value at each time moment, such a ...
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Moving real-time linked data query evaluation to the client
... {firstname.lastname}@ugent.be Abstract. Traditional rdf stream processing engines work completely server-side, which contributes to a high server cost. For allowing a large number of concurrent clients to do continuous ...
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Learning to Accurately COUNT with Query-Driven Predictive Analytics
... specifically COUNT) queries over large-scale ...(i.e., COUNT) aggregation operator, as it is a fundamental operator for both internal data system optimisations and for aggregation-query ...novel, ...
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In Memory Database. Performance evaluation based on query time. Seminar Database Systems
... Order processing delivers main input for online recommendation systems, by analyzing the selection and consumption behavior of individual users both in past and real time. Therefore Northwind database offer ...
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Query-Time Data Integration
... keyword query is covered in the list of ...our evaluation, the first solution according the system’s ranking scheme is not necessarily the best solution, for example because of errors in Web table schema ...
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An Evaluation of Strict Timestamp Ordering Concurrency Control for Main-Memory Database Systems
... the time of a ...the time needed for the base trans- action instructions should be about one quarter of the cycles ...a timestamp is updated, the changes will be written into the processor’s ...or ...
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Performance Evaluation of Materialized Query
... that, query performance degrades since they have to go through large volumes of data after making multiple ...same query is fired by multiple users is also high. Hence each time same query is ...
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Recycling in Pipelined Query Evaluation
... 256 query streams, as generated by the standard QGEN ...H query patterns in different orders and with differ- ent randomly assigned parameters, according to the bench- mark ...each query pattern only ...
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Evaluation of the Impacts of Data Model and Query Language on Query Performance
... EXPERIMENT RESULT AND DISCUSSION The mean and standard deviation (in parenthesis) for accuracy, time, and confidence are shown in Table 1. Since the stage 1 data do not follow a normal distribution, non-parametric ...
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Some Models for Count Time Series
... Remark 3.2.1. Several comments are in place regarding the problems of interest above. Smoothing is another commonly considered problem in connection to HMMs. It is not considered here for several reasons. First, in the ...
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Google Spreadsheet Transform Date To Timestamp
... transform timestamp to force a ...transform timestamp at the american format, could understand correctly: you can apply a new ...date timestamp must depend on opinion; back them in the week are ...
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Optimization of Dynamic Query Evaluation Plans
... While the optimization time and the plan activation time, tagged e and $ in Figure 3, are longer than those for static plans, the total execution times of dynamic plans can be dramatical[r] ...
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Containerized SQL Query Evaluation in a Cloud
... execution time of the join operation is lower bonded by the execution time of the JoinNode with the heaviest workload, any performance benefit of adding more JoinNodes is lost when the number of JoinNodes ...
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Parallel query evaluation on multicore architectures
... 2.5. SOFTWARE PROFILING TOOLS 21 [Lev04]. This property is common for all tools using performance counters as a basis. Zaparanuks et. al. [ZJH09] provides a detailed study of hardware performance counters and of the ...
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Incremental Query Evaluation in a Ring of Databases.
... parallel time on any amount of bounded fan-in (“real”) ...non-incremental evaluation takes TC0 and AC0 for queries with and with- out aggregates, ...incremental evaluation is indeed easier than ...
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Making it count: Explorations of time limitation and meaning
... feel frustrated in their attempts to recast the way in which they wished to live. Relationships and sexuality also emerge as markers of change - longstanding marriages face the challenge of renegotiating domestic space ...
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Standardization of radical cystectomy: Time to count and be counted
... C O M M E N T S Second, are surgical standards important? We think they are for the outcome in individual patients, and for the design and evaluation of multimodal studies in bladder cancer. Who, where and how ...
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Bayesian analysis for time series of count data
... lead to situations where the equations do not have solutions (Ng et al., 2011). To improve effi- ciency of the estimators, a parametric distribution on the latent process needs to be assumed. This assumption results in a ...
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OLAP Query Evaluation in a Database Cluster: A Performance Study on Intra-Query Parallelism
... different query classes from the previous section ...speedup. Query 1 scales perfectly with the cluster size. The speedup of Query 6 is more or less the same for clusters of size 2 and ...execution ...
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Reducing Run time Execution in Query Optimization
... and evaluation of many plans and choosing the lowest cost ...the query relatively fast, using the least amount of resources, CPU and ...more time to evaluate many plans in comparison to running a ...
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