• Title/Summary/Keyword: Kolmogov-Smirnov Test

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A Study on Quality of Portals Based on Probability Distributions of Response Time (확률분포를 이용한 포털들의 응답시간 품질에 관한 연구)

  • Ryu, Gui-Yeol
    • Journal of Korean Society for Quality Management
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    • v.42 no.1
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    • pp.33-41
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    • 2014
  • Purpose: The purpose of this paper is estimate response quality of three major portal in Korea based on the response time. In addition to response time, the response time by 1Kbyte will be analysed. Methods: Data was collected from July 2010 to November 2013 using Firebug. For comparing averages, ANOVA will be used. For comparing distributions, Chisquare test and Kolmogov-Smirnov test will be used for parametric and non parametric test respectively. Results: For response quality based on response time, Daum gets the first place, Naver the second place, and Nate the third place. But the order of the response time per 1Kbyte is different. The order is Naver, Daum and Nate. Conclusion: The response quality may be estimated using various factors. Response time is the most important factor. Daum provides the shortest response time. We could say Daum provides the best response quality. But Naver provides the shortest response time per 1Kbyte. From these results, we know reducing packets is very important thing in response time.

A study on distribution comparison of response packets for major portal sites (주요 포털사이트의 응답패킷분포에 관한 연구)

  • Ryu, Gui-Yeol
    • Journal of the Korean Data and Information Science Society
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    • v.24 no.3
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    • pp.437-444
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    • 2013
  • The object of study is to verify the distributions of response packets of 3 portal sites such as Naver, Daum, Nate. The period of experiments is from May 19th 2010 to November 7th 2012 and the number of experiments is 4,642. The distributions of Naver, Nate are biomodals. The distribution of Daum has long right tails. 3 distributions are different under 1% significance level using chi-square test and two sample Kolmogorov-Smirnov test. From proportions and percentiles, Naver has a distribution with the largest values. Nate is the second place, and Daum has a distribution with the smallest values. We must make portal pages light to increase response speed including other technologies. We expect our results to activate competition among portal sites.