chapter 16
dialogue notations and
design
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Understanding Human-Computer Interaction: Dialogue Notations and Design, Slides of Human Resource Management
This chapter explores dialogue notations, a crucial aspect of human-computer interaction design. Dialogue notations include diagrammatic representations like state transition networks, jsd diagrams, and flow charts, as well as textual representations such as formal grammars, production rules, and csp. The document also discusses the relationship between dialogue and the semantics and presentation of systems, and the importance of analyzing formal descriptions for inconsistencies, missing actions, and potential errors. Real-life dialogues and their alternatives are also considered, highlighting the need to focus on normative responses and cope with unexpected user behavior.
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2012/2013
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chapter 16
dialogue notations and
design
Dialogue Notations and Design
- Dialogue Notations
- Diagrammatic
- state transition networks, JSD diagrams, flow charts
- Textual
- formal grammars, production rules, CSP
- Diagrammatic
- Dialogue linked to
- the semantics of the system – what it does
- the presentation of the system – how it looks
- Formal descriptions can be analysed
- for inconsistent actions
- for difficult to reverse actions
- for missing actions
- for potential miskeying errors
structured human dialogue
- human-computer dialogue very constrained
- some human-human dialogue formal too …
Minister: do you man’s name take this woman … Man: I do Minister: do you woman’s name take this man … Woman: I do Man: With this ring I thee wed (places ring on womans finger) Woman: With this ring I thee wed (places ring ..) Minister: I now pronounce you man and wife
lessons about dialogue
- wedding service
- sort of script for three parties
- specifies order
- some contributions fixed – “I do”
- others variable – “do you man’s name …”
- instructions for ring concurrent with saying words “with this ring …”
- if you say these words are you married?
- only if in the right place, with marriage licence
- syntax not semantics
dialogue design notations
- dialogue gets buried in the program
- in a big system can we:
- analyse the dialogue:
- can the user always get to see current shopping basket
- change platforms (e.g. Windows/Mac)
- dialogue notations helps us to
- analyse systems
- separate lexical from semantoc
- analyse the dialogue:
- … and before the system is built
- notations help us understand proposed designs
graphical notations
state-transition nets (STN)
Petri nets, state charts
flow charts, JSD diagrams
State transition networks -
events
- arc labels a bit cramped because:
- notation is `state heavy‘
- the events require most detail
Start Menu
Circle 1 Circle 2 Finish
Line 1 Line 2 Finish
select 'circle'
select 'line'
click on centre (^) circumferenceclick on rubber band draw circle
rubber band draw lastline
first pointclick on double click
click on point draw a line