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題 名 | 具有轉折點之可確定比率軟體可靠度模型研究=The Study of Deterministic Proportional Software Reliability with Change Point Model |
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作 者 | 張揖平; | 書刊名 | 東吳經濟商學學報 |
卷 期 | 21 1998.06[民87.06] |
頁 次 | 頁109-121 |
分類號 | 312.49 |
關鍵詞 | 軟體可靠度; 轉折點; 可確定比率模型; 最大概似法; Software reliability; Change-point; Deterministic propotional model; Maximum likelihood method; |
語 文 | 中文(Chinese) |
中文摘要 | 在軟體測試階段時,錯誤被偵測出的情況可能受到許多因素影響,包括測試環境 ;測試方法;資源分配等,因此,在軟體可靠度模型中亦可考慮有轉折點情形。本文主要提 出具有轉折點之可確定比率軟體可靠度模型,利用最大概似法估計模型中之未知參數,並且 提出兩階段數值方法尋找參數之估計值。其次證明此模型可以改寫成傳統之迴歸轉折點模型 但誤差項分配為 Gumbel (0,1) 之線性轉換。本文並使用提出之模型分析一組實際之軟體偵 測資料,由 U-Plot 之準則及 Kolmogorov-Smirnov 指標發現具有轉折點之可確定比率軟體 可靠度模型較傳統之可確定比率軟體可靠度模型合適。最後,提出本文結論與未來研究方向 。 |
英文摘要 | In the software testing process, the error detection can be affected by many factors such as the test environment, test method, and resource allocation. Hence the change-point problems are of interest in modelling the error detection process. In this paper, we consider the change-point problem in deterministic proportional software reliability model. The unknown parameters can be estimated by using the maximum likelihood method. We also propose a two-stage numerical procedure to find the estimates. The proposed deterministic proportional software reliability with change-point model is equivalent to the classical change-point regression model with error terms distributed as the linear trasformation of Gumbel (0,1). An illustrative numerical example is also presented. Model evaluation based on the U-Plot and Kolmogorov-Smirnov indicator is developed. For the data set of example, the proposed deterministic proportional software reliability with change-point model is better than the classical deterministic proportional software reliability model. Finally, the directions of future research are contemplated. |
本系統中英文摘要資訊取自各篇刊載內容。