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Architectures to make Simple Visualisations Simple Systems Alan Dix Lancaster University and aQtive Russell Beale Birmingham University and aQtive Andy Wood aQtive
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outline simple visualisation and dancing histograms onCue and appropriate intelligence pieTrees deeper inside onCue - Qbits ree
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dancing histograms
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simple visualisation AVI98 paper (Geoff Ellis & Alan Dix) key concept –familiar paper representations (can be domain specific) –add interactivity –surprisingly powerful
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stacked histograms
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dancing histogram
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doing it applet version –histogram 1 day –axes - another day!!! –load/save data –different file formats –etc. etc. full application ?
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onCue
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context sensitive link to resources –on the web –on the desktop –on the intranet component based framework easily extensible
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20 21 22 23 25 24 20 17 7 7 3 7 the dancing histograms very useful a ing out some of the textile sites yo x's page at http://www.hiraeth.com/ onCue in action histograms
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kinds of data short text–search engines single word– thesaurus, spell check names– directory services post codes– maps, local info numbers– SumIt! (add them up) custom– order #, cust ref...
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appropriate intelligence (a)be useful when it is right (b)be right often enough to be useful (c)not cause problems when it is wrong
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how it works
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dancing histograms in onCue table recogniser (½ day initially) turn applet into onCue service (½ day) usable Qbit in onCue later –improved recogniser (another day) –MS Excel service using same recogniser
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pieTree ree
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pieTree simple data – pie chart hierarchical data–exploding pie (info at leaves) info on nodes too ??? file space usage web site log files ree
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web stats corporate/4000 [9000] –info.html3000 –press.html2000 community/3000 [8000] –user.html2000 –research.html1000 –developer.html2000 product/2000 [8000] –onCue/ 2000 [4000] online.html1000 download.html1000 –vfridge/ 1000 –support/ 1000 ree
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top level - pie chart corporate/4000 [9000] community/3000 [8000] product/2000 [8000] ree
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drilling corporate/4000 [9000] community/3000 [8000] product/2000 [8000] –onCue/ 2000 [4000] –vfridge/ 1000 –support/ 1000 ree
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deeper corporate/4000 [9000] community/3000 [8000] product/2000 [8000] –onCue/ 2000 [4000] online.html1000 download.html1000 –vfridge/ 1000 –support/ 1000 ree
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root hits /3000 [28000] –corporate/4000 [9000] –community/3000 [8000] –product/2000 [8000] ree
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pieTree - pros and cons + similar to pie charts + equal area / equal value + display inertia + temporal fusion – hard to judge area – poor for small interior values – less good near leaves ree
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recogniser heuristics first element in each line a number (like du) last number in each line a number (like web log) some items prefixes of others (e.g. "/exercises" and "/exercises/images") some lines indented more than others numbers for higher levels > lower levels ree
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deep inside
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what happens inside aQtiveSpace –component framework Qbits –bit like beans, but different mixed initiative external and dynamic configuration
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Qbit nodes data flow initiative
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advantages external linkage –neither Qbit needs to know about the other mixed initiative styles –data-driven - using set/listen –demand driven - using get/give
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underlying theory status-event analysis scope – includes human and computer power –equal footing for status and event phenomena implementation –understand status representation
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more visualisation http://www.hiraeth.com/alan/topics/vis onCue http://www.aQtive.com ree
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