Author Topic: Suggestion: treat no data different from zero  (Read 6789 times)

Fred93

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Suggestion: treat no data different from zero
« on: August 05, 2016, 01:16:56 PM »
Over time, LC has added several fields, such as "inquiries in last 12 months".  In such fields, most loans have no data.  NSR treats no data as if it were zero.  This results in misleading back test results.  I believe many users do not realize that they are entering filters where some loans have no data for a particular field.

I suggest you treat no data as different from zero, and report it on a separate line in the breakouts.  Also would be good to allow the user to specify how to filter no data.  For example, whether no data should pass or fail the filter.

TWLMG

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Re: Suggestion: treat no data different from zero
« Reply #1 on: August 06, 2016, 07:19:25 AM »
I second this. When making financial decisions, using the most accurate data possible is always the best way to go. And knowing something happened zero times is drastically different than knowing that a data point has no data.
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Zach

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Re: Suggestion: treat no data different from zero
« Reply #2 on: August 12, 2016, 02:56:04 PM »
Over time, LC has added several fields, such as "inquiries in last 12 months".  In such fields, most loans have no data.  NSR treats no data as if it were zero.  This results in misleading back test results.  I believe many users do not realize that they are entering filters where some loans have no data for a particular field.

I suggest you treat no data as different from zero, and report it on a separate line in the breakouts.  Also would be good to allow the user to specify how to filter no data.  For example, whether no data should pass or fail the filter.

Missing values for Lending Club attributes are now reported as "N/A". We are working on a similar fix for Prosper data.

Fred93

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Re: Suggestion: treat no data different from zero
« Reply #3 on: August 14, 2016, 03:36:38 AM »
Thank you.  This is a great improvement.