Question :
What is COCOMO model?.Give the procedure of the Delphi method.
Subject
Software Engineering
Standard
Computer Science Engineering
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587
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Knowledge
Deepak
Answer / Solution
Answer / Solution
COCOMO model
The Constructive Cost Model (COCOMO) is a software cost estimation model developed by Barry Boehm. The model parameters are derived from fitting a regression formula using data from historical projects (63 projects for COCOMO 81 and 163 projects for COCOMO II).
COCOMO is a procedural model, which means that it provides a step-by-step process for estimating software costs. The model is divided into three levels of detail:
- Basic COCOMO: This level is the simplest and provides the least accurate estimates. It is suitable for early-stage estimates when little information is available.
- Intermediate COCOMO: This level is more accurate than Basic COCOMO and requires more information about the project. It is suitable for mid-stage estimates when more information is available.
- Detailed COCOMO: This level is the most accurate but requires the most information. It is suitable for late-stage estimates when all information is available.
The COCOMO model uses a number of factors to estimate software costs, including:
- Development environment: The type of development environment, such as a mainframe or a personal computer, can affect the cost of development.
- Development team: The experience and skill level of the development team can also affect the cost of development.
- Software complexity: The complexity of the software being developed can also affect the cost of development.
Delphi method
The Delphi method is a structured communication technique used to obtain the best estimates of a group of experts. The method is named after the Oracle of Delphi, a famous oracle in ancient Greece.
The Delphi method is a two-stage process:
- Round 1: In the first round, each expert independently submits their estimates of the unknown quantity.
- Round 2: The facilitator collects the estimates and summarizes them without revealing the identity of the experts. The facilitator then distributes the summary to the experts and asks them to revise their estimates based on the information provided by the other experts.
This process is repeated until the experts reach a consensus or until the estimates converge.
The Delphi method has a number of advantages, including:
- It can be used to obtain estimates from a large group of experts.
- It can be used to obtain estimates on topics that are difficult to quantify.
- It can be used to obtain estimates from experts who are geographically dispersed.
The Delphi method also has a number of disadvantages, including:
- It can be time-consuming and expensive.
- It can be difficult to obtain a consensus among experts.
- It can be difficult to ensure that the experts are truly independent.
Overall, the Delphi method is a valuable tool for obtaining estimates from a group of experts. However, it is important to be aware of the limitations of the method before using it.
Vedhika
Answer / Solution
Answer / Solution
COCOMO Model
COCOMO, or Constructive Cost Model, is a software cost estimation model developed by Barry Boehm in 1981. It is a procedural model that uses a set of factors to estimate the effort, schedule, and cost of a software project. The factors include the size of the project, the experience of the development team, the use of new technology, and the complexity of the project.
COCOMO is one of the most widely used software cost estimation models. It is relatively easy to use and can be used to estimate the cost of a wide range of software projects. However, COCOMO is not without its limitations. It is not as accurate as some other software cost estimation models, and it can be difficult to use for projects that are outside the scope of the model's data.
Delphi Method
The Delphi method is a structured communication technique that gathers opinions from a group of experts. The method is designed to reduce bias and groupthink by allowing experts to anonymously share their opinions and then receive feedback from the group.
The Delphi method typically involves the following steps:
- A panel of experts is assembled.
- The experts are asked to anonymously answer a series of questions.
- The responses are compiled and summarized.
- The experts are then given the opportunity to review the summary and revise their responses.
- Steps 3 and 4 are repeated until the experts reach a consensus on their answers.
The Delphi method is a valuable tool for gathering expert opinion on a variety of topics. It can be used to estimate costs, forecast demand, or make other predictions. The method is particularly useful for projects where there is a lack of data or where it is difficult to get experts together in person.
Here are some of the advantages of using the Delphi method:
- It can reduce bias and groupthink.
- It can gather input from a large number of experts.
- It can be used to gather information on sensitive topics.
- It can be used to get input from experts who are located in different parts of the world.
Here are some of the disadvantages of using the Delphi method:
- It can be time-consuming and expensive.
- It can be difficult to get experts to participate.
- It can be difficult to get experts to reach a consensus.
- The results of the Delphi method may not be accurate.
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