- 我们看到了风险严重程度是如何计算的。然而,这是基于特定时间测量的值。风险的概率和影响不是一成不变的。此外,新的风险可能突然出现,或者现有的风险可能被认为不再相关而从而关闭。在项目的生命周期中,风险的参数可能会根据一些因素发生变化。因此,EMV或风险的严重程度在项目期间可能会改变几次。一般的观察是,不确定性和风险在项目开始时是最高的,预计随着项目的进展会呈现下降的趋势
- 以图形显示迭代中每项需求相关的各种风险,随着项目不断推进和功能完成开发,项目风险将会不断减少或燃烧殆尽。用来显示我们的风险管理策略和目前风险分数的影响的燃尽图
Iteration 1 | Iteration 2 | Iteration 3 | Iteration 4 | Iteration 5 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Risk id | Risk description | P1 | I1 | S1=P1xI1 | P2 | I2 | S2=P2xI2 | P3 | I3 | S3=P3xI3 | P4 | I4 | S4=P4xI4 | P5 | I5 | S5=P5xI5 |
1 | UX designer not available to design thefront end of the portal | 0.80 | 0.50 | 0.40 | 0.80 | 0.30 | 0.24 | 0.80 | 0.30 | 0.24 | 0.60 | 0.30 | 0.18 | 0.60 | 0.10 | 0.06 |
2 | Dependency on vendor software toperform user authentication andauthorization | 0.50 | 0.25 | 0.13 | 0.25 | 0.25 | 0.06 | 0.25 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 |
3 | Library users are not accustomed tousing a computer | 0.80 | 0.75 | 0.60 | 0.60 | 0.75 | 0.45 | 0.50 | 0.5 | 0.25 | 0.50 | 0.25 | 0.13 | 0.20 | 0.25 | 0.05 |
4 | Web portal registration is timeconsuming | 0.25 | 0.50 | 0.13 | 0.25 | 0.40 | 0.10 | 0.10 | 0.40 | 0.04 | 0.00 | 0.40 | 0.00 | 0.00 | 0.40 | 0.00 |
5 | License cost and lifetime maintenancecost of Websphere server is high | 0.90 | 0.75 | 0.68 | 0.90 | 0.60 | 0.54 | 0.50 | 0.40 | 0.20 | 0.50 | 0.40 | 0.20 | 0.20 | 0.40 | 0.08 |
6 | Booksellers and publishers have theirown systems to which interfacing isvery complex | 0.25 | 0.10 | 0.03 | 0.25 | 0.10 | 0.03 | 0.25 | 0.10 | 0.03 | 0.25 | 0.10 | 0.03 | 0.25 | 0.10 | 0.03 |
7 | Existing hardware has reached end oflife | 0.00 | 0.00 | 0.00 | 0.90 | 0.25 | 0.23 | 0.50 | 0.25 | 0.13 | 0.25 | 0.25 | 0.06 | 0.00 | 0.25 | 0.00 |
8 | Javascript and CSS skills are notavailable | 0.00 | 0.00 | 0.00 | 0.50 | 0.20 | 0.10 | 0.40 | 0.20 | 0.08 | 0.20 | 0.20 | 0.04 | 0.10 | 0.10 | 0.01 |
9 | Integration challenges with studentdatabase on active directory | 0.00 | 0.00 | 0.00 | 0.50 | 0.20 | 0.10 | 0.50 | 0.20 | 0.10 | 0.40 | 0.20 | 0.08 | 0.20 | 0.20 | 0.04 |
10 | Attrition of a senior developer wholooked after the software configuration | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | 0.60 | 0.60 | 1.00 | 0.30 | 0.30 | 1.00 | 0.10 | 0.10 |
Cumulative risk severity | 1.95 | 1.84 | 1.66 | 1.01 | 0.37 |