Difference between basic cocomo model and intermediate cocomo model and complete cocomo model
Answers
The Constructive Cost Model (COCOMO) is defined as a procedural software cost estimation model. Its parameters are derived from a regression formula that uses data from different historical projects. The different types of COCOMO are:
Basic COCOMO: This model is used to give an approximate estimate of the various parameters of the project.
Intermediate COCOMO: This model refines the above estimate using 15 multipliers that are based on different software development attributes.
Complete COCOMO: This model calculates the development time and effort taken as the total of the estimates of all the individual subsystems.
Answer:
Basic Cocomo Model-Single Valued Model, Computing Software Development Efforts.
• It is Quick and Rough estimation techniques which gives an approximate
estimate of the project parameters.
Intermediate COCOMO Model
• The basic COCOMO model considers efforts and time development are the
alone functions of product size, but some factors from other projects may
also affect the efforts and time.
• Therefore, in order to obtain an accurate estimation of the effort and
project duration, the effect of all relevant parameters must be taken into
account.
• The intermediate COCOMO model doing this by using a set of 15 Cost
Drivers (Multipliers) based on various attributes of software development.
• The Intermediate COCOCMO model consumes these “Cost Drivers”
Complete (Detailed) COCOMO Model
• A major shortcoming of both the Basic and Intermediate COCOMO models
is that they consider a software product as a single similar entity.
• But most large systems are made up several smaller sub-systems.
• For example, some subsystems may be considered as Organic Type, some
Semidetached, and some Embedded.