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ACM SIGCHI WWW Human Factors (Open Discussion)

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"ACM SIGCHI WWW Human Factors (Open Discussion)" <[log in to unmask]>
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Cindy Lu <[log in to unmask]>
Date:
Mon, 4 Jun 2007 12:13:21 -0400
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"Jared M. Spool" <[log in to unmask]>
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"Jared M. Spool" <[log in to unmask]>
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On Jun 2, 2007, at 9:23 PM, Cindy Lu wrote:

> The question is if the scope is 200-500, does the live scrolling  
> feature
> still work well?
>
> On search.live.com, you can use the scroll bar for the millions of  
> search
> results and the visible range is displayed to you ask you scroll.
> http://search.live.com/images/results.aspx?q=msn&FORM=BIRE
>
> In an enterprise web application where complicated business logics are
> involved, can the data be presented fast enough?

Hi Cindy,

The key question is how the users scan the data.

If the data appears with the most likely candidates at the top, the  
user is likely to scan slowly. In cases like this, the dynamic  
loading and presentation of subsequent data in the live model can  
keep up.

If the user is going to grab the scroll bar to quickly get further  
into the data set, skipping the initial items without even scanning  
them, the live model will likely struggle. This would be a scenario  
where the user is jumping into the data set (say, starting at a  
specific letter further into the data,) and therefore not interested  
in the stuff that is initially loaded. In this case, you'd be better  
off offering an indexed approach to the data.

Hope that helps,

Jared

Jared M. Spool
User Interface Engineering
510 Turnpike St., Suite 102, North Andover, MA 01845
e: [log in to unmask] p: +1 978 327 5561
http://uie.com  Blog: http://uie.com/brainsparks



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