Where we present an overview on why relevancy is a problem, how important it is and how we can improve it. The topic of relevancy is becoming increasingly important in earth data discovery as our audience is tuned to the accuracy of standard search engines like Google

Lynnes, Chris

Newman, Doug

NASA Technical Reports Server

SESIP-0716-DN2
Relevancy 101
ESIP Summer Meeting 2016
July 19-22 2016
Chris Lynnes (NASA ESDIS)
Doug Newman (NASA Earthdata – Raytheon)
The material is based upon work supported by the National Aeronautics and 
Space Administration under Contract Number NNG15HZ39C
https://ntrs.nasa.gov/search.jsp?R=20160009284 2019-08-31T02:17:11+00:00Z
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WHAT IS RELEVANCY?
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A la Wikipedia
“how well a retrieved 
document or set of 
documents meets the 
information need of the 
user”
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Say I’m looking for ozone data from the 
Ozone Monitoring Instrument...
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Say I’m looking for ozone data from the 
Ozone Monitoring Instrument...
Wait, 
what?
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WHY IT IS IMPORTANT?
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Back to our ozone search...
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Back to our ozone search...
Good thing I’m not busy for the 
next two weeks  :-/
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HOW?
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The Content Heuristic
Well, it would be nice if the dataset actually 
had the content I am looking for... 
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New and Improved Heuristic -
Processing Version
Newer version is better than older version
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New and Improved Heuristic -
Processing Version
New version is more likely to be up to date
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New and Improved Heuristic -
Instrument
Newer instrument is supposed to be 
“better” than previous instruments
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Usability Heuristic
Level 3 Gridded datasets are easier for 
most users to use than Level 2 Swaths
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Community Usage Heuristic
The dataset most often used by the 
community is more likely to be useful
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Time Range Heuristic
Datasets covering the user’s full time range 
are better than those covering just part of 
it
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Spatial Heuristic
Datasets covering the user’s full area are 
better than those covering just part of it
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User-centric Heuristics
User type or intent The most relevant datasets are...
Applications users High spatial resolution, near-real-time
Students Easier to use data (L3 grids in netCDF)
Climate Modeler Datasets on Climate Model Grid (CMG)
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This material is based upon work 
supported by the National 
Aeronautics and Space 
Administration under Contract 
Number NNG15HZ39C.


Relevancy 101

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