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Education Commons

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Selected Works

2002

Educational Assessment, Evaluation, and Research

Algorithm

Articles 1 - 2 of 2

Full-Text Articles in Education

Parametric Optimization In Data Mining Incorporated With Ga-Based Search, L Tan, D Taniar, K Smith Dec 2001

Parametric Optimization In Data Mining Incorporated With Ga-Based Search, L Tan, D Taniar, K Smith

Dr Ling Tan

A number of parameters must be specified for a data-mining algorithm. Default values of these parameters are given and generally accepted as ‘good’ estimates for any data set. However, data mining models are known to be data dependent, and so are for their parameters. Default values may be good estimates, but they are often not the best parameter values for a particular data set. A tuned set of parameter values is able to produce a data-mining model of better classification and higher prediction accuracy. However parameter search is known to be expensive. This paper investigates GA-based heuristic techniques in a ...


Dynamic Task Assignment In Server Farms: Better Performance By Task Grouping, Ling Tan, Z Tari Dec 2001

Dynamic Task Assignment In Server Farms: Better Performance By Task Grouping, Ling Tan, Z Tari

Dr Ling Tan

This paper describes a dynamic load balancing approach to distributed server farm systems. This approach overcomes the interference caused by non-negligible very-large tasks in the heavy-tailed distribution. First, a subset of tasks is allocated proportionally to the processing capability of participating servers by taking into account their remaining processing time. Later, tasks in the servers are processed in order of priority to optimise the system response time. The proposed load balancing algorithm also takes into account the information on server loads to avoid load imbalance caused by very large tasks. The experiments show that the mean waiting time and the ...