Subconscious requirements must be fulfilled by the

This preview shows page 42 - 44 out of 182 pages.

(subconscious requirements) must be fulfilled by the system in any case. Otherwise, stakeholders will be disappointed and dissatisfied. Completely fulfilled dissatisfiers do not generate a positive disposition but merely help to avoid massive discontent. Dissatisfiers are dominantly influenced by existing systems. Therefore, observation and document-cen- tric techniques are especially well suited for the elicitation of these factors. Satisfiers Satisfiers (conscious requirements) are properties that are consciously known to the stakeholders and explicitly demanded. When these proper- ties are fulfilled, stakeholders are content and satisfied, which is desirable. If some demanded properties are missing, the stakeholders probably will not accept the product. Their satisfaction decreases with each missing sat- isfier. Satisfiers can be elicited well using survey techniques. Delighters Delighters (unconscious requirements) are properties of a system whose value is recognized only when the stakeholder can try out the sys- tem for herself or the requirements engineer proposes them. Creativity techniques are best suited to elicit delighters.
Image of page 42

Subscribe to view the full document.

24 3 Eliciting Requirements 3.3 Elicitation Techniques Requirements elicitation: no universal method The main goal of all elicitation techniques is in supporting the requirements engineer in ascertaining the knowledge and requirements of the stake- holders. How and when a technique can be applied depends on the given conditions. Applying the technique consciously and in a fashion appropri- ate to the situation at hand allows for tailoring the requirements elicitation process which takes into account project constraints so that requirements may be elicited as completely and comprehensibly as possible. 3.3.1 Types of Elicitation Techniques Influencing factors regarding the choice of elicitation techniques Elicitation techniques serve the purpose of identifying the conscious, unconscious, and subconscious stakeholder requirements. However, there is no universal method to elicit these requirements [Hickey and Davis 2003] . Every project has individual constraints and individual characteris- tics and is by and large unique, but there are always elicitation techniques that are compatible with the project. The most important influencing fac- tors when choosing the appropriate elicitation techniques are as follows: the distinction between conscious, unconscious, and subconscious requirements that are to be elicited the time and budget constraints, as well as the availability of the stake- holders the experience of the requirements engineer with a particular elicita- tion technique the chances and risks of the project Risk factors The first important step when choosing a suitable elicitation technique is to perform an analysis of constraints critical to the project, i.e., identifying so-called risk factors. Mostly, these result from human, organizational, and professional influences, as illustrated in the following passages.
Image of page 43
Image of page 44

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Ask Expert Tutors You can ask 0 bonus questions You can ask 0 questions (0 expire soon) You can ask 0 questions (will expire )
Answers in as fast as 15 minutes