- From: Mark Harrison <mark.harrison@cantab.net>
- Date: Mon, 16 Jan 2017 23:07:39 +0000
- To: Simon.Cox@csiro.au
- Cc: wes.turner@gmail.com, PublicVocabs <public-vocabs@w3.org>, axv4444@gmail.com, danbri@google.com, public-schemaorg@w3.org
- Message-ID: <CAL_MqQVTpUE_NWh0VewKtETi=m0NDCMdbz9eQ7f44vTsw+dW4w@mail.gmail.com>
I know! ;-) As a physicist I felt it was important to point out the distinction between them. On 16 Jan 2017 23:05, <Simon.Cox@csiro.au> wrote: > Ø Sorry to be pedantic ;-) > > > > That’s not pedantry. Its accuracy. Important. > > > > *From:* scenicviews.org@gmail.com [mailto:scenicviews.org@gmail.com] *On > Behalf Of *Mark Harrison > *Sent:* Tuesday, 17 January, 2017 03:58 > *To:* Wes Turner <wes.turner@gmail.com> > *Cc:* Dan Brickley <danbri@google.com>; Xavier Gonsalves < > axv4444@gmail.com>; schema.org Mailing List <public-schemaorg@w3.org>; > W3C Web Schemas Task Force <public-vocabs@w3.org> > *Subject:* Re: Improvement of www.schema.org/menu > > > > Sorry to be pedantic ;-) , but in fact, the SI base unit for mass is the > kilogram. > > See > > https://en.wikipedia.org/wiki/International_System_of_Units#Base_units > and http://physics.nist.gov/Pubs/SP330/sp330.pdf (section 2.1.1.2) and > > http://www.bipm.org/en/publications/si-brochure/kilogram.html > > > > The gram is the base unit for mass in the old CGS system - but not in the > modern SI system. > > > > QUDT will be more useful and more complete when version 2.0 is finally > released - and has very useful machine-readable triples for expressing the > dimension of each unit (is it a mass, a length, etc.) and conversion > factors and offsets between units that belong to the same physical > dimension (e.g. to convert between various units of mass or between various > units of length). > > > > In GS1 and the GS1 web vocabulary, for the value of > http://gs1.org/voc/unitCode we use a string value indicating a > Measurement Unit from UN/ECE Recommendation 20 code tables, e.g. GRM for > gram, KGM for Kilogram, MGM for milligram and MC for microgram. A 2005 > edition of the code tables is available at http://www.unece.org/ > fileadmin/DAM/cefact/recommendations/rec20/rec20_rev3_Annex3e.pdf > > > > Personally, I'd much prefer the QUDT approach but industry does currently > use the UN/ECE Rec 20 code tables for expressing units of measure, even if > some of these UN ECE code strings are completely opaque and non-intuitive, > e.g. 28 = kilogram per square metre. > > > > > > > > > > > > On Mon, Jan 16, 2017 at 4:27 PM, Wes Turner <wes.turner@gmail.com> wrote: > > http://schema.org/NutritionInformation > > > > http://schema.org/servingSize r: Text > > "The serving size, in terms of the number of volume or mass" > > > > Other NutritionInformation attributes have a r:ange of Mass. > > > > - Does this suggest a need for a Volume class? > > - Could/should the servingSize range be Quantity? > > > > - Should Quantity have a 'unit' property with r: URL? > > http://schema.org/Quantity > > > > - QUDT defines URLs for many (powers of) physical units > > - Unfortunately, there are a number of vocabularies for physical units > > - The SI unit for Mass is always g(ram) > > > > ... > > > > https://wrdrd.com/docs/consulting/units#rdf-and-units > > > > https://wrdrd.com/docs/consulting/linkedreproducibility#csv- > csvw-and-metadata-rows ... "Table with 7 metadata header rows" > > > On Monday, January 16, 2017, Dan Brickley <danbri@google.com> wrote: > > On 15 January 2017 at 07:42, Xavier Gonsalves <axv4444@gmail.com> wrote: > > Many have talked and requested about this but w3 seems to avoid it. > > > > > Schema should add more properties under restaurant menus like dish price, > > cuisine, spiciness, dish name, ingredients, veg, nonveg, vegan category, > > description .etc.. so that search engines can implement the following in > the > > future: > > > > https://searchenginewatch.com/sew/news/2328869/google-tests- > restaurant-menus-in-card-results/ > > > > It can be ordered such that these properties can be put on the webpage of > > the URL of the menu. > > > > Please look into it ASAP. > > Please comment on the draft at http://webschemas.org/MenuItem in > Github, https://github.com/schemaorg/schemaorg/issues/1288 > > Dan > > >
Received on Monday, 16 January 2017 23:08:14 UTC