| 题名: | absent features or missing values? |
| 作者: | Zhang Wen
; Yang Ye
; Wang Qing
|
| 会议文集: | SEKE 2010 - Proceedings of the 22nd International Conference on Software Engineering and Knowledge Engineering
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| 会议名称: | 22nd International Conference on Software Engineering and Knowledge Engineering, SEKE 2010
|
| 会议日期: | 44013
|
| 出版日期: | 2010
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| 会议地点: | Redwood City, CA, United states
|
| 关键词: | Knowledge engineering
; Software engineering
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| 出版地: | United States
|
| 收录类别: | EI
|
| ISBN: | 1891706268
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| 部门归属: | (1) Laboratory for Internet Software Technologies, Institute of Software, Chinese Academy of Sciences, Beijing 100190, China
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| 主办者: | Knowledge Systems Institute Graduate School
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| 英文摘要: | To clarify the essence of unobserved values of software effort dataset, we comparatively investigate the effectiveness of regarding the unobserved values as absent features and missing values with the task of predicting software effort. When regarding unobserved values as absent features, max-margin classification is used to classify the effort directly. While regarding unobserved values as missing values, we use different imputation methods, including MINI (mean imputation based k nearest neighbor hot-deck imputation), CMI (class mean imputation) and MI (mean imputation) to impute missing values firstly and then SVM (support vector machine) is used to classify software efforts. The experiments show that the treatment of regarding unobserved values in software effort dataset as missing values produces more desirable performance measured by accuracy in using historical data for software effort classification than regarding unobserved values as absent features. Moreover, among the mentioned three imputation methods, on CSBSG data set, CMI has better performance than MINI, and on ISBSG data set, MINI has better performance than CMI. We explain the outcome in this paper. |
| 内容类型: | 会议论文
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| URI标识: | http://ir.iscas.ac.cn/handle/311060/8638
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| Appears in Collections: | 互联网软件技术实验室 _会议论文
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| Recommended Citation: | |
Zhang Wen,Yang Ye,Wang Qing. absent features or missing values?[C]. 见:22nd International Conference on Software Engineering and Knowledge Engineering, SEKE 2010. Redwood City, CA, United states. 44013.
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