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= Measure microformat =
{{DISPLAYTITLE:Measure microformat research}}


Currently this microformat is in exploratory stage. Contributions should focus on real examples from the Web, existing formats/encoding of measures.
<div style="float:right;margin-left:1em">__TOC__</div>
 
This page is for researching and developing a [[measure]] microformat. Per the [[process]]:
* [[measure-examples]]
* [[measure-formats]]
* [[measure-brainstorming]]


== The problem ==
== The problem ==


Measures (e.g. weights, sizes, temperatures) occur frequently on the Web, but they differ from locale to locale (e.g. Fahrenheit vs. Celsius, pound versus Kilogram) making comparison and matching of offerings difficult.
Measures (e.g. weights, sizes, temperatures) occur frequently on the Web, they are constituted of a value a unit-measure and, in scientific and technical contexts, an experimental uncertainty. These 3 elements should be marked-up consistently across websites so that they can be easily identified and acted upon (export, compute, convert) in collaborative distributed applications.
 
Unit-measures differ from locale to locale (e.g. Fahrenheit vs. Celsius, pound versus Kilogram), making comparison and matching of offerings difficult.
 
The Measurement microformat will enable unambiguous description of physical quantities and thus provide a solid ground for data sharing and automation in many areas.


The Measurement Unit microformat will enable unambiguous description of measures and as a result easier comparison and matching of offerings.
== Next Steps ==
* clean-up [[measure-examples]] to refer to <em>current</em> real world examples
* update [[measure-formats]] with formats from other recent efforts such as schema.org
* massive clean-up of [[measure-brainstorming]]


== Related microformats ==
== Related microformats ==
 
* [[hcalendar]] can provide a complete quantitative description of a natural event (for example an earthquake) occurring at a specified time (dtstart/dtend) and location (embedded [[geo]]), by just embedding measured physical quantities in the 'descrition' span.
* [[job-listing]] can use time measure for specify per what period of time the salary is for.
* [[job-listing]] can use time measure for specify per what period of time the salary is for.
* [[hlisting]] same as for job listing.
* [[hlisting]] product dimensions; weight/mass; time period (as above); price.
* [[directions-examples]] can use length measure for mileage and time to go from one point to the next.
* [[directions-examples]] can use length measure for mileage and time to go from one point to the next.
* [[recipe-examples]] can use weight, volume and time measure for ingredients and preparation time.
* [[recipe-examples]] can use weight, volume and time measure for ingredients and preparation time.
* [[currency]] can be viewed as a measurement unit, or as a component of a measurement unit, as in $ per hour.
* [[currency]] can be viewed as a measurement unit, or as a component of a measurement unit, as in $ per hour.


==References==


== Measurment Classification ==
*[http://en.wikipedia.org/wiki/Measurement Measurement in scientific/technical contexts (Wikipedia)]
 
*[http://en.wikipedia.org/wiki/Scientific_Notation Scientific notation for Physical quantities (Wikipedia)]
Because it is easier to provide examples, I will first list examples.
 
=== Categorical Data ===
 
* Various measuremnts may produce '''NON-Numerical''' values
** a pain scale: '''most severe''', '''very severe''', '''severe''', ...
 
=== A Single Value / Data Point ===
 
* the distance between 2 cities is '''40 km'''
* the velocity is '''62 mph'''
* ...
 
=== An Interval Measurement ===
 
* time: the shop is open between '''6am - 18pm''' on every day of the week, exept Saturdays  from '''9am - 16pm''' and Sundays from '''9am - 13pm'''
**[[hcalendar|hCalendar]]? [[User:AndyMabbett|Andy Mabbett]] 09:24, 22 Nov 2006 (PST)
 
=== Matrices ===
 
* the GPS coordinates are '''12°14' N and 25°55' E'''
* the dimension of the box is '''3m x 2m x 0.55m'''
**this is three separate, single measurements, surely? [[User:AndyMabbett|Andy Mabbett]] 09:21, 22 Nov 2006 (PST)
 
=== Statistical Measurements ===
 
Often, a group of data is summarized using a statistics:
* the mean length was 1.3m (SD 0.12m, group size 22)
* the median age was 42 years (interquartile range 95% 18 - 97)
 
=== Measurement Scales ===
 
==== Accuracy vs. Precision ====
 
'''QUESTIONS'''
* How detailed should a measurement be stored?
**Microformats aren't for storing measurements; they're for "labelling" the measurements that are already present. [[User:AndyMabbett|Andy Mabbett]] 09:23, 22 Nov 2006 (PST)
* If Accuracy and precision are relevant to the measurement, how do we store these?
 
==== Standardization of Measurement ====
 
* sometimes we may need to store the calibration information / calibration curves
* we may need to store the reference point the measurment is based on
* we may need to store the '''normal values'''
** biomedical measurements are often laboratory dependent, so it does NOT make sense to have the measurement without the corresponding normal values
** e.g. anti-Hepatitis B surface antigen antibody (anti-HBs) Titer: 32 MIU/ml
*** normal: 0 (non-infected, non-past infection, non-immunity)
*** protective immunity: >10 MIU/ml
*** interpretation is however more complex, depending on other tests as well
 
== Contributors ==
* Guillaume Lebleu
* [[User:AndyMabbett|Andy Mabbett]]
 
==References==
*[http://www.bipm.org/en/si/ International System of Units (SI)]
*[http://www.bipm.org/en/si/ International System of Units (SI)]
**[http://en.wikipedia.org/wiki/International_System_of_Units (Wikipedia)]
**[http://en.wikipedia.org/wiki/International_System_of_Units (Wikipedia)]
*[http://video.google.com/videoplay?docid=5871900250712259806 the Semantic ChemicalWeb] (GoogleEng presentation, Peter Murray-Rust)
*[http://www.slideshare.net/dder/the-new-science-bangalore-edition the New e-Science]  (SlideShare, David De Roure)
*[http://en.wikipedia.org/wiki/Template:Convert Wikipedia's "convert" template]
*[http://www.cs.tut.fi/~jkorpela/chars/si.html Jukka Korpela - Characters in SI notations]


==See also==
==See also==
* [[currency]]
{{measure-related-pages}}
* [[measure-formats]]
* [[measure-examples]]
* [[measure-brainstorming]]

Latest revision as of 16:28, 18 July 2020


This page is for researching and developing a measure microformat. Per the process:

The problem

Measures (e.g. weights, sizes, temperatures) occur frequently on the Web, they are constituted of a value a unit-measure and, in scientific and technical contexts, an experimental uncertainty. These 3 elements should be marked-up consistently across websites so that they can be easily identified and acted upon (export, compute, convert) in collaborative distributed applications.

Unit-measures differ from locale to locale (e.g. Fahrenheit vs. Celsius, pound versus Kilogram), making comparison and matching of offerings difficult.

The Measurement microformat will enable unambiguous description of physical quantities and thus provide a solid ground for data sharing and automation in many areas.

Next Steps

Related microformats

  • hcalendar can provide a complete quantitative description of a natural event (for example an earthquake) occurring at a specified time (dtstart/dtend) and location (embedded geo), by just embedding measured physical quantities in the 'descrition' span.
  • job-listing can use time measure for specify per what period of time the salary is for.
  • hlisting product dimensions; weight/mass; time period (as above); price.
  • directions-examples can use length measure for mileage and time to go from one point to the next.
  • recipe-examples can use weight, volume and time measure for ingredients and preparation time.
  • currency can be viewed as a measurement unit, or as a component of a measurement unit, as in $ per hour.

References

See also

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