Experimental Software Engineering (ESE)

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Presentation transcript:

Experimental Software Engineering (ESE) Survey: An Empirical Paradigm DICII – UniRoma2 – Giovanni Cantone

Surveys Often based on observation retrospect: e.g., when a software tool or a technique is used for a while. Concerned with collecting what people already know (the past history). Can be qualitative, quantitative or a combination of qualitative and quantitative data. DICII – UniRoma2 – Giovanni Cantone

Survey Purposes (1/3) Explorative Descriptive Explanatory DICII – UniRoma2 – Giovanni Cantone

Survey Purposes (2/3) Explorative: They do not aim to answer basic questions about a study; instead, they are used as a pre-study to a more enough investigation to assure that all the important issues are taken in consideration. Descriptive: Descriptive surveys can be conducted to evaluate the distribution of certain characteristics attributes in some population. DICII – UniRoma2 – Giovanni Cantone

Survey Purposes (3/3) Explanatory: Explanatory surveys aim at making explanatory claims about the population; for example, when studying how developers use a certain inspection technique. DICII – UniRoma2 – Giovanni Cantone

Data Collection in Surveys Questionnaire: A form filled with questions. This form could be a paper, electronic form, www or e-mail pages. Interview: Can be made face to face with persons, it can also be made through the telephone. DICII – UniRoma2 – Giovanni Cantone

Interviews vs. Questionnaires Pros of interviews Compared to questionnaires: An interview method achieves a higher response rates than, for example, mail surveys. The interviews generally decrease the number of “I don't know” type of answers. It is possible for the interviewer to observe and ask questions. Cons of interviews. Because interviewers are requested to be at least as domain-expert as interviewed, interviews usually are much more expensive than questionnaire. DICII – UniRoma2 – Giovanni Cantone

Data Collection in surveys. Examples E1- The Effect of Learning: Using a survey for collecting data to compare the degree of knowledge that students had before / gained after having a software programming course. E2- Understanding Software Documentations: Using surveys to compare the effect of learning by using two different methods of reading UML artifacts. DICII – UniRoma2 – Giovanni Cantone