1 / 23

Interactive Systems

Interactive Systems. Changing Requested System Requirements. Johan F. Hoorn Vrije Universiteit Faculty of Sciences Division of Mathematics and Computer Science Department of Information Management and Software Engineering jfhoorn@cs.vu.nl. Contents. Status Goal Case Theory

robertbenton
Download Presentation

Interactive Systems

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. InteractiveSystems Johan F. Hoorn

  2. Changing Requested System Requirements Johan F. Hoorn Vrije Universiteit Faculty of Sciences Division of Mathematics and Computer Science Department of Information Management and Software Engineering jfhoorn@cs.vu.nl Johan F. Hoorn

  3. Contents • Status • Goal • Case • Theory • Model of change • Prospects • Questions Johan F. Hoorn

  4. Status • Sept. 1, 2001 – Sept. 1, 2005 • Supervisors: Hans van Vliet and Gerrit van der Veer • Three international publications • Industries: • Human-Machine Interaction Johan F. Hoorn

  5. Goal • Requirements management tool - can we predict changes in what people want? Integrate: • Requirements engineering • Task modeling • Business modeling • Emotion psychology Johan F. Hoorn

  6. Events New goals New processes Case Changing system requirements Johan F. Hoorn

  7. Task Model 1 Emotions Task Model 2 Culture Tool: Special questionnaire Theory How come they disagree? Johan F. Hoorn

  8. TM1 Cristina TM2 Johan Johan F. Hoorn

  9. new goals set new priorities, arousing (new) emotions new new business model Johan F. Hoorn

  10. new business model new positive emotions negative emotions new Johan F. Hoorn

  11. but where does the change come from? requirements specification GTA ISAC Johan F. Hoorn

  12. Types of goals affecting requirements Business goals: - maximize profit egotistic - make quality products altruistic Personal goals: - make a career egotistic - support my company altruistic New business model shifts focus Johan F. Hoorn

  13. Requirements change Stakeholders Client Management Employees vs. vs. Sources of conflict, regarding goals vs. Business goals Personal goals egotistic vs. altruistic egotistic vs. altruistic Event Johan F. Hoorn

  14. Predictions for valence to business goals: When new business goal supports personal goals  positive emotions, easy acceptance TM2, no requirements change When new business goal obstructs personal goals  negative emotions, difficult acceptance TM2, requirements change Johan F. Hoorn

  15. Predictions for relevance of business goals: When new business goal has personal importance/real life consequences  strong emotions, whether positive or negative When new business goal has no personal importance  weak emotions, whether positive or negative Relevance intensifies (non)acceptance TM2 and affects the rank ordering of requirements (the priority list) Johan F. Hoorn

  16. Help me! Types of processes affecting requirements Accurate processes: - command from prompt fast - task analysis slow Inaccurate processes: - JPEG decoder fast - office assistants slow New business model shifts focus Johan F. Hoorn

  17. Requirements change Stakeholders Client Management Employees vs. vs. Sources of conflict, regarding proceses vs. Accurate process Inaccurate process fast vs. slow fast vs. slow Event Johan F. Hoorn

  18. Predictions for valence to business processes: When new process is needed for goal (whether business or personal)  positive emotions, easy acceptance TM2, no requirements change When new process is undesired for goal (whether business or personal)  negative emotions, difficult acceptance TM2, requirements change Johan F. Hoorn

  19. Predictions for relevance business processes: When new process affects personal goals  strong emotions, whether positive or negative When new process is irrelevant to personal goals  weak emotions, whether positive or negative Relevance intensifies (non)acceptance TM2 and affects the rank ordering of requirements (the priority list) Johan F. Hoorn

  20. change’ Agreed requirements goal process egotistic personal fast inaccurate Maximize profit Bring good Work way up Employalty Make chip Empirical cycle Reflexes Office assist business altruistic accurate slow Relevance Valence Model of change Johan F. Hoorn

  21. Johan F. Hoorn

  22. Prospects • Ethnography (TM1) • Structured questionnaires (TM2) • Confirmative factor analysis • Model fit • Requirements management tool? Johan F. Hoorn

  23. Questions • Let this not be one of them: Johan F. Hoorn

More Related