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Interactions @ Scale:
User experiences with many objects
Southern New Hampshire University ACM Student Chapter meeting
Karen Donoghue & Craig Newell
HumanLogic

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What user experiences work best
for dealing with lots of things?

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Displaying a few items

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Lists of many items

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1656 items
Scrolling

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Pagination

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Finite
scrolling
17 pages

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Infinite scrolling

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Infinite
scrolling

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Clustering

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Keyword search

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taxes

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What happens when search fails to return
a manageable number of results?

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Help the user to search more precisely

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Faceted search

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If the user can’t search precisely enough,
then try to organize the results

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Progressive disclosure

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Progressive
disclosure of
search results

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Sorting by relevance

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Dynamic relevance
calculation used to order
based on user behavior

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Browse history
influences sort
order of results

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We now have a toolkit of interactions
for dealing with objects at scale

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“At scale”: many, thousands,
hundreds of thousands,
millions, tens of millions...

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Local Haze crowdsources air quality
sensor readings worldwide and
rates sensor accuracy

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Infinite scrolling list

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To help manage the size of the list we
added filtering

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After filtering, we added relevancy

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We added a map view to help users
better understand the contents of the list

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Lessons learned

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Use the best interaction model(s) based
on users’ needs

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Use multiple interaction models if needed

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THANK YOU!
info@humanlogic.com