Intermediate COCOMO model The basic COCOMO model assumes that effort and development time are functions of the product size alone. However, a host of other project parameters besides the product size affect the effort required to develop the product as well as the development 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 recognizes this fact and refines the initial estimate obtained using the basic COCOMO expressions by using a set of 15 cost drivers (multipliers) basedon various attributes of software development. For example, if modern programming practices are used, the initial estimates are scaled downward by multiplication with a cost driver having a value less than 1. If there are stringent reliability requirements on the software product, this initial estimate is scaled upward. Boehm requires the project manager to rate these 15 different parameters for a particular project on a scale of one to three. Then, depending on these ratings, he suggests appropriate cost driver values which should be multiplied with the initial estimate obtained using the basic COCOMO. In general, the cost drivers can be classified as being attributes of the following items: Product: The characteristics of the product that are considered include the inherent complexity of the product, reliability requirements of the product, etc. Computer: Characteristics of the computer that are considered include the execution speed required, storage space required etc. Personnel: The attributes of development personnel that are considered include the experience level of personnel, programming capability, analysis capability, etc. Development Environment: Development environment attributes capture the development facilities available to the developers. An important parameter that is considered is the sophistication of the automation (CASE) tools used for software development.

Question

Intermediate COCOMO model The  basic  COCOMO  model  assumes  that  effort  and  development  time  are  functions of the product size alone. However, a host of other project parameters besides the product size affect the effort required to develop the product as well as the development 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 recognizes this fact and refines the  initial  estimate  obtained  using  the  basic  COCOMO  expressions  by  using  a  set  of  15  cost  drivers  (multipliers)  basedon  various  attributes  of  software  development. For example, if modern programming practices are used, the initial estimates are scaled downward by multiplication with a cost driver having a value less than 1. If there are stringent reliability requirements on the software product, this initial estimate is scaled upward. Boehm requires the project manager to rate these 15 different parameters for a particular project on a scale of one to three. Then,  depending  on  these  ratings,  he  suggests  appropriate  cost  driver  values  which  should  be  multiplied  with  the  initial  estimate  obtained  using  the  basic  COCOMO. In general, the cost drivers can be classified as being attributes of the following items: Product:    The  characteristics  of  the  product  that  are  considered  include  the  inherent complexity of the product, reliability requirements of the product, etc. Computer:    Characteristics  of  the  computer  that  are  considered  include  the  execution speed required, storage space required etc. Personnel:  The attributes of development personnel that are considered include the  experience  level  of  personnel,  programming  capability,  analysis  capability,  etc. Development  Environment:    Development  environment  attributes  capture  the  development facilities available to the developers. An important parameter that is considered is the sophistication of the automation (CASE) tools used for software development.

trilok sharma · Accepted Answer

Intermediate COCOMO model The  basic  COCOMO  model  assumes  that  effort  and  development  time  are  functions of the product size alone. However, a host of other project parameters besides the product size affect the effort required to develop the product as well as the development 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 recognizes this fact and refines the  initial  estimate  obtained  using  the  basic  COCOMO  expressions  by  using  a  set  of  15  cost  drivers  (multipliers)  basedon  various  attributes  of  software  development. For example, if modern programming practices are used, the initial estimates are scaled downward by multiplication with a cost driver having a value less than 1. If there are stringent reliability requirements on the software product, this initial estimate is scaled upward. Boehm requires the project manager to rate these 15 different parameters for a particular project on a scale of one to three. Then,  depending  on  these  ratings,  he  suggests  appropriate  cost  driver  values  which  should  be  multiplied  with  the  initial  estimate  obtained  using  the  basic  COCOMO. In general, the cost drivers can be classified as being attributes of the following items: Product:    The  characteristics  of  the  product  that  are  considered  include  the  inherent complexity of the product, reliability requirements of the product, etc. Computer:    Characteristics  of  the  computer  that  are  considered  include  the  execution speed required, storage space required etc. Personnel:  The attributes of development personnel that are considered include the  experience  level  of  personnel,  programming  capability,  analysis  capability,  etc. Development  Environment:    Development  environment  attributes  capture  the  development facilities available to the developers. An important parameter that is considered is the sophistication of the automation (CASE) tools used for software development.

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