Re: Popularity of Property Graphs

Dear all,

Unfortunately tomorrow i will not be able to attend the call due to a last minute flight.

Personally, I would like to express my consideration (following the discussion from last week) on the fact that more and more companies are utilising property graphs while on the same time draw away from RDF technologies.
The first deliverable of the recommendation (http://www.w3.org/community/propertygraphs/wiki/Recommendation) suggests that we describe the pg data model, which i am totally in favour of.
This way, we could create the corresponding RDF serialisation and have SPARQL as the main query language instead of creating a new one. We could explore queries in cypher, gremlin and similar pg query languages and find a match of them in SPARQL.

To quickly sum up, I totally agree with the starting point being a description of the data model for property graphs and later we could explore the correlation with the Semantic Web Cake( RDF, SPARQL, etc).

Regards,
Michael Petychakis.



On Jan 8, 2014, at 1:02 AM, Ashok Malhotra <ashok.malhotra@oracle.com<mailto:ashok.malhotra@oracle.com>> wrote:

You are correct JSON-LD does have datatype support.
I guess I was thinking of JSON which has only string and number
All the best, Ashok

On 1/7/2014 5:56 PM, Patrick Durusau wrote:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Ashok,

On 01/07/2014 05:24 PM, Ashok Malhotra wrote:
Hi Patrick: I agree that we are staring to see more and more data
whose structure fits Property Graphs.

I also agree that the models used by vendors are often
idiosyncratically different. So, yes, standardization of strings to
UTF-8  among other things would be very useful.

But if we add support for datatypes we may leave JSON-LD behind
and there may be some objection to this.
???

I'm not sure why adding property types would leave JSON-LD "behind?"

http://www.w3.org/TR/json-ld/ reports at 6.3 that JSON-LD has
non-normative support for datatypes and uses an XML Schema Part 2
datatype as an example.

Yes?

Hope you are having a great day!

Patrick

All the best, Ashok

On 1/7/2014 4:30 PM, Patrick Durusau wrote: Greetings!

There seems little doubt that property graphs are gaining ground
but I am less certain that the interchange of property graphs is
quite as well settled.

For example, one of the non-participants thus far in the
propertygraphs discussion supports label and property name
characters outside the ASCII character set if and only if each
character is preceded by a back tick. Creating the first family of
"back tick" languages I suppose.

Could that be transformed? Perhaps. I don't know how you would
apply the various Unicode algorithms since those are dependent upon
order i the original string. (Thinking of zero-spacing
characters.)

Declarations about serializations that mandates the use of UTF-8
would be a step in the right direction. Possibly enumerate the
other aspects of a property graph in the abstract that may or may
not be supported.

Allow multiple properties on nodes? Edges? Multiple nodes to one
edge? etc.

Not mandating any serialization but giving serializations an
outline of what they may or may not choose to support.

I can't imagine serious players using labels and property names
that don't support Unicode. (Remember name characters and start
name characters? Why repeat a mistake?)

Hope everyone is having a great week!

Patrick

-- Patrick Durusau patrick@durusau.net<mailto:patrick@durusau.net> Technical Advisory Board,
OASIS (TAB) Co-Chair, OpenDocument Format TC (OASIS) Editor,
OpenDocument Format TC, Project Editor ISO/IEC 26300 Former Chair,
V1 - US TAG to JTC 1/SC 34 Convener, JTC 1/SC 34/WG 3 (Topic Maps)
Co-Editor, ISO 13250-5 (Topic Maps)

Another Word For It (blog): http://tm.durusau.net Homepage:
http://www.durusau.net Twitter: patrickDurusau

- -- Patrick Durusau
patrick@durusau.net<mailto:patrick@durusau.net>
Technical Advisory Board, OASIS (TAB)
Co-Chair, OpenDocument Format TC (OASIS)
Editor, OpenDocument Format TC, Project Editor ISO/IEC 26300
Former Chair, V1 - US TAG to JTC 1/SC 34
Convener, JTC 1/SC 34/WG 3 (Topic Maps)
Co-Editor, ISO 13250-5 (Topic Maps)

Another Word For It (blog): http://tm.durusau.net
Homepage: http://www.durusau.net
Twitter: patrickDurusau
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
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=27yv
-----END PGP SIGNATURE-----