Hi, Does RDFLIB currently support RDF-STAR and SPARQ-Star? thanks. Wes Turner <wes.tur...@gmail.com> 于2021年7月31日周六 下午8:14写道:
> Remaining rdflib-jsonld work: > > - Connection Negotiation > So that e.g. @context: https://schema.org/ correctly resolves the Link: > header > > - Only access external resources if RDFLIB_CONFIG or > rdflibconfig['allow_access_external_resources'] > instead of by default, which is what 6.0 is currently doing: > > "URLInputSource can be abused to retrieve arbitrary documents if used > naïvely" > https://github.com/RDFLib/rdflib/issues/1369 > > - Should RDFlib cache @contexts with requests-level caching with > requests-cache or CacheControl or something else? > > - Should RDFlib cache at least contexts in the JSON LD Recommended > Context [so that @context: https://schema.org/ works out of the box]? > https://github.com/w3c/json-ld-rc/blob/main/context.jsonld > > On Sat, Jul 31, 2021 at 8:03 AM Wes Turner <wes.tur...@gmail.com> wrote: > >> >> >> On Sat, Jul 31, 2021 at 6:45 AM Wes Turner <wes.tur...@gmail.com> wrote: >> >>> >>> >>> On Wed, Jul 28, 2021 at 4:49 AM Miel Vander Sande < >>> miel.vandersa...@meemoo.be> wrote: >>> >>>> Hi Nick, >>>> >>>> TBH, it's pretty much a function that converts a Dict or a JSON file in >>>> a streaming fashion: >>>> https://github.com/viaacode/construction-site/blob/main/construction_site/parse_functions.py. >>>> I think it's a stand-alone thing; I don't plan anything extra on that >>>> specifically, with maybe the exception of a cmd interface (hence the >>>> proposed refactoring of csv2rdf) >>>> >>> >>> Profiling / [comparative] benchmarks with e.g. Scalene [1][2] and/or >>> perfplot [3] (%timeit) [4][5] could be worthwhile. >>> >>> [1] >>> https://awesomeopensource.com/project/plasma-umass/scalene?categoryPage=26 >>> [2] https://github.com/plasma-umass/scalene >>> [3] https://github.com/nschloe/perfplot >>> [4] >>> https://docs.python.org/3/library/timeit.html#timeit-command-line-interface >>> [5] >>> https://ipython.readthedocs.io/en/stable/interactive/magics.html#magic-timeit >>> >> >> From https://twitter.com/westurner/status/1274571490688630785 plus >> further references: >> >> Other methods for CSV + transforms => RDF? >>> - #rdflib csv2rdf >>> >> >> >>> - COW >> >> - url: https://github.com/CLARIAH/COW >> - desc: Integrated CSV to RDF converter, using CSVW and nanopublications >> >> - #CSVW https://github.com/cldf/csvw/blob/master/README.md#see-also >>> >> >> Could https://github.com/cldf/csvw/ be modified to support (1) >> json-ld-streaming; and (2) alternate csv parsers? >> >> - @kidehen sponger / rdfm_yq_parse_csv()? >> >> - >> http://docs.openlinksw.com/virtuoso/rdfspongerprogrammerguide/#virtuosospongeroverviewcartarch >> - >> https://github.com/openlink/Virtuoso-RDFIzer-Mapper-Scripts/blob/master/rdf_mappers.sql >> >> - #tarql >>> >> - Web: https://tarql.github.io/ >> - Src: https://github.com/tarql/tarql >> - ProgrammingLanguage: Java >> >> - #csv2rdf GH topic: https://github.com/topics/csv2rdf >>> >> >> #csv2rdf >> https://github.com/topics/csv2rdf >> >> >>> Adding columnar & dataset-level metadata *with URIs* is the value add >>> here, IMHO #LR >> >> >> "7 metadata header rows (column label, property URI path, DataType, unit, >> accuracy, precision, significant figures)" >> >> https://wrdrd.github.io/docs/consulting/linkedreproducibility#csv-csvw-and-metadata-rows >> >> Example Table A with 7 metadata header rows: >> https://wrdrd.github.io/docs/consulting/linkedreproducibility#id4 >> >> The csv2rdf tool would need to optionally read this additional metadata >> from either additional header rows or an external 'header' file. >> >> >>> ijson [6] looks like it has some interesting features; iterative, >>> asyncio, push. How does the performance compare? >>> >>> [6] https://pypi.org/project/ijson/ >>> >>> I do plan to develop more components that assist scalable ETL, >>>> data-to-rdf like tasks. This includes a plugin for Apache Airflow >>>> ("provider"), which would be good as a RDFLib family repository. >>>> >>> >>> - The datasette and dogsheep projects have a bunch of *-to-sqlite utils >>> and an interface that a number of projects on PyPI have implemented: >>> https://datasette.io/tools >>> https://github.com/dogsheep >>> >>> https://pypi.org/search/?q=to-sqlite >>> - https://datasette.io/tools/csvs-to-sqlite >>> - >>> https://github.com/simonw/csvs-to-sqlite/blob/a8a37a016790dc93270c74e32d0a5051bc5a0f4d/tests/test_csvs_to_sqlite.py#L417-L446 >>> - parse datetimes in CSVs >>> - xsd:datetime (and schema.org/Date and schema.org/dateCreated >>> and schema.org/dateModified) specifies that time will be specified in >>> ISO8601 formats >>> >>> What are the solutions for generating RDFS schema from CSVs and SQL >>> tables? >>> >>> - https://pypi.org/project/tablib/ >>> https://github.com/jazzband/tablib/blob/master/tests/test_tablib.py >>> - doesn't do anything with datatypes FWICS >>> >>> - >>> https://sqlite-utils.datasette.io/en/stable/cli.html#showing-the-schema >>> https://github.com/simonw/sqlite-utils/blob/main/sqlite_utils/db.py >>> >>> def suggest_column_types: >>> >>> https://github.com/simonw/sqlite-utils/blob/c7e8d72be9fe8fe0811f685a18eebc637662d41b/sqlite_utils/utils.py#L29-L58 >>> >>> - https://en.wikipedia.org/wiki/Knowledge_extraction >>> >>> https://en.wikipedia.org/wiki/Knowledge_extraction#Relational_databases_to_RDF >>> >>> - https://pypi.org/project/rdb2rdf/ >>> https://github.com/nisavid/pyrdb2rdf/blob/master/rdb2rdf/stores.py >>> > PyRDB2RDF provides RDFLib with an interface to relational databases >>> as RDF stores. The underlying data is accessed via SQLAlchemy. It is mapped >>> to RDF according to the specifications of RDB2RDF. The corresponding RDF >>> graph is represented as an RDFLib graph. >>> > >>> > Translating from relational data to RDF via direct mapping is >>> currently supported. Translating in the other direction and mapping with >>> R2RML are planned but not yet implemented. >>> >>> - https://pypi.org/project/rdfizer/ >>> >>> - https://github.com/RDFLib/pyTARQL >>> - Does this handle datetimes? >>> >>> - Generate JSONschema from JSON and SHACL from JSON-Schema: >>> >>> https://stackoverflow.com/questions/7341537/tool-to-generate-json-schema-from-json-data/30294535#30294535 >>> - https://pypi.org/project/genson/ has been recently updated >>> - Src: https://github.com/wolverdude/genson/ >>> - https://github.com/mulesoft-labs/json-ld-schema >>> https://github.com/mulesoft-labs/json-ld-schema#how-does-it-work >>> > JSON-LD Schema defines a simple 'semantics' JSON-Schema vocabulary >>> (effectively a JSON-Schema meta-schema) that reuses the official JSON >>> Schema for JSON-LD to provide definitions for @context and @type >>> properties. These annotations can be used to provide JSON-LD context for a >>> JSON-Schema document. Provided this JSON-LD context, constraints over named >>> 'properties' in a JSON Schema document can be understood as constraints >>> over CURIES of JSON-LD documents following the context rules defined in the >>> JSON-LD specification. >>> >>> ## CSVW: CSV on the Web >>> >>> - Homepage: https://w3c.github.io/csvw/ >>> - Standard: https://www.w3.org/TR/tabular-data-model/ >>> - Standard: https://www.w3.org/TR/tabular-metadata/ >>> - Standard: https://www.w3.org/TR/csv2json/ >>> - Standard: https://www.w3.org/TR/csv2rdf/ >>> - Namespace: https://www.w3.org/ns/csvw# >>> - xmlns: `@prefix csvw: <https://www.w3.org/ns/csvw#> .` >>> - @context: https://www.w3.org/ns/csvw.jsonld >>> >>> CSVW (*CSV on the Web*) is a set of relatively new standards >>> for representing :ref:`CSV` rows and columns >>> as :ref:`RDF` (and :ref:`JSON` / :ref:`JSON-LD`) >>> along with *metadata*. >>> >>> * URIs for datatypes (XSD) >>> >> >> FWIU, there is not yet a vocabulary for physical units like meters**2 in >> the JSON-LD Recommended Context: >> https://w3c.github.io/json-ld-rc/context.jsonld >> https://github.com/w3c/json-ld-rc >> https://github.com/w3c/json-ld-rc/blob/main/context.jsonld >> >> QUDT is one such vocabulary: >> ```turtle >> qudt-quantity:Time >> rdf:type qudt:SpaceAndTimeQuantityKind ; >> rdfs:label "Time"^^xsd:string ; >> qudt:description "Time is a basic component of the measuring system >> used to sequence events, to compare the durations of events and the >> intervals between them, and to quantify the motions of >> objects."^^xsd:string ; >> qudt:symbol "T"^^xsd:string ; >> skos:exactMatch <http://dbpedia.org/resource/Time> . >> >> # ... >> unit:SecondTime >> rdf:type qudt:SIBaseUnit , qudt:TimeUnit ; >> rdfs:label "Second"^^xsd:string ; >> qudt:abbreviation "s"^^xsd:string ; >> qudt:code "1615"^^xsd:string ; >> qudt:conversionMultiplier >> "1"^^xsd:double ; >> qudt:conversionOffset >> "0.0"^^xsd:double ; >> qudt:symbol "s"^^xsd:string ; >> skos:exactMatch <http://dbpedia.org/resource/Second> . >> # ... >> ``` >> http://www.qudt.org/qudt/owl/1.0.0/unit/Instances.html#SecondTime >> >> ... We must be able to say that the numbers in a column have a physical >> unit with URI; to specify columnar metadata so that downstream tools don't >> need to try to sniff and cast between datatypes and lossily drop units from >> strings in column names: >> >> - (_datatype_ _physical_unit_): >> - (float64, "unit:SecondTime",) >> - (float64, unit["SecondTime"],) >> >> >> >>> * URIs for columns (RDF) >>> * Document Metadata >>> * CSV -> JSON (-> JSON-LD -> RDF) >>> * CSV -> RDF >>> >>> Could there be a file naming convention for specifying the extra CSVW >>> header to apply_to or transform zero or more CSV files with? >>> >>> filename.csv >>> filename.csv.csvw >>> filename.csv.csvwheader.jsonld.json >>> filename.csv.csvw.jsonld.json >>> >> ```python >> >> uri = 'filename.csv' >> if Path(uri + 'csvw.jsonld.json').exists(): >> read_csvw(uri, *args, **kwargs) >> else: >> read_csv(uri, *args, **kwargs) >> >> ``` >> >>> >>> https://www.w3.org/TR/tabular-data-primer/ >>> >>> >>>> Best, >>>> >>>> Miel >>>> >>>> Op wo 28 jul. 2021 om 06:09 schreef Nicholas Car < >>>> nicholas....@surroundaustralia.com>: >>>> >>>>> Hi Meil, >>>>> >>>>> Yes, all offers of contribution are of interest! The CSV 2 RDF stuff >>>>> is very old and many tools related to it, such as pyTARQL ( >>>>> https://github.com/RDFLib/pyTARQL), are missing. Are you planning on >>>>> presenting JSON2RDF as a new plugin to RDFlib? that may be an option, >>>>> however remember that another option is also just to present your tool's >>>>> repository within RDFlib's family of repositories (i.e. within >>>>> https://github.com/RDFLib) and the choice will depend on how stable >>>>> the tool is and how you see it's future development going. >>>>> >>>>> But perhaps you have other things in mind? Whatever the case, we'd >>>>> love to hear your plans. >>>>> >>>>> Cheers, >>>>> >>>>> Nick >>>>> >>>>> On Tue, Jul 27, 2021 at 5:56 PM Miel Vander Sande < >>>>> miel.vandersa...@meemoo.be> wrote: >>>>> >>>>>> Hi all, >>>>>> >>>>>> little late to the party, but what a great effort this is! Congrats >>>>>> with the release and thank you; this library is super essential to my >>>>>> work >>>>>> and it makes RDF usable in ways other libraries can't. >>>>>> >>>>>> Sidenote: I have a streaming direct json-to-rdf mapping >>>>>> implementation (port of https://github.com/AtomGraph/JSON2RDF) that >>>>>> I'd like to contribute, possibly in combination with a refactoring of >>>>>> https://rdflib.readthedocs.io/en/stable/apidocs/rdflib.tools.html#rdflib.tools.csv2rdf.CSV2RDF. >>>>>> Would that be of interest? >>>>>> >>>>> >>> Does JSON2RDF [need to] implement the w3c json-ld-streaming spec [7]? >>> [7] https://w3c.github.io/json-ld-streaming/ >>> >>> - https://w3c.github.io/json-ld-streaming/#streaming-document-form >>> - https://w3c.github.io/json-ld-streaming/#streaming-rdf-form >>> >>> >>>> >>>>>> Best, >>>>>> >>>>>> Miel >>>>>> >>>>>> Op di 20 jul. 2021 om 21:58 schreef Natanael Arndt <arn...@gmail.com >>>>>> >: >>>>>> >>>>>>> I've retweetet the tweet by jarven. But I don't use reddit or hacker >>>>>>> news, I think also semantic web mailing list would be a good idea. >>>>>>> >>>>>>> If you'd like to post something in the channels, please do so. >>>>>>> >>>>>>> Natanael >>>>>>> >>>>>>> Am 20. Juli 2021 20:14:09 MESZ schrieb Wes Turner < >>>>>>> wes.tur...@gmail.com>: >>>>>>> >Congrats and thanks! >>>>>>> > >>>>>>> >From the release notes on the Release: >>>>>>> >https://github.com/RDFLib/rdflib/releases/tag/6.0.0 >>>>>>> > >>>>>>> >``` >>>>>>> >6.0.0 is a major stable release that drops support for Python 2 and >>>>>>> >Python >>>>>>> >3 < 3.7. Type hinting is now present in much >>>>>>> >of the toolkit as a result. >>>>>>> > >>>>>>> >It includes the formerly independent JSON-LD parser/serializer, >>>>>>> >improvements to Namespaces that allow for IDE namespace >>>>>>> >prompting, simplified use of g.serialize() (turtle default, no need >>>>>>> to >>>>>>> >decode()) and many other updates to >>>>>>> >documentation, store backends and so on. >>>>>>> > >>>>>>> >Performance of the in-memory store has also improved since Python >>>>>>> 3.6 >>>>>>> >dictionary improvements. >>>>>>> > >>>>>>> >There are numerous supplementary improvements to the toolkit too, >>>>>>> such >>>>>>> >as: >>>>>>> > >>>>>>> >- inclusion of Docker files for easier CI/CD >>>>>>> >- black config files for standardised code formatting >>>>>>> >- improved testing with mock SPARQL stores, rather than a reliance >>>>>>> on >>>>>>> >DBPedia etc >>>>>>> >``` >>>>>>> > >>>>>>> >Have there been ANN posts to e.g. Hacker news and e.g. >>>>>>> /r/semanticweb? >>>>>>> > >>>>>>> >On Tue, Jul 20, 2021, 10:23 Florent Georges <fgeor...@gmail.com> >>>>>>> wrote: >>>>>>> > >>>>>>> >> Congratulations, and thank you all for the hard work! >>>>>>> >> >>>>>>> >> -- >>>>>>> >> Florent Georges >>>>>>> >> H2O Consulting >>>>>>> >> http://h2o.consulting/ >>>>>>> >> >>>>>>> >> On Tue, Jul 20, 2021, 16:00 Nicholas Car < >>>>>>> >> nicholas....@surroundaustralia.com> wrote: >>>>>>> >> >>>>>>> >>> Hi all, >>>>>>> >>> >>>>>>> >>> Yes, 6.0.0 is out: >>>>>>> >>> >>>>>>> >>> - https://pypi.org/project/rdflib/6.0.0/ >>>>>>> >>> - https://github.com/RDFLib/rdflib/releases/tag/6.0.0 >>>>>>> >>> >>>>>>> >>> Please publicise this release: it has a lot of stuff since 5.0.0 >>>>>>> in >>>>>>> >April >>>>>>> >>> last year. >>>>>>> >>> >>>>>>> >>> Thank you very much to all of you who contributed, in particular >>>>>>> my >>>>>>> >>> co-maintainers, Ashley & Natanael and Edmond, Iwan, Tom, Remi, >>>>>>> >Harold and >>>>>>> >>> all the PR and Issue creators. Thanks also to the institutions >>>>>>> that >>>>>>> >>> provided time for their staff to contribute. >>>>>>> >>> >>>>>>> >>> If you see issues, please let the co-maintainers know straight >>>>>>> away: >>>>>>> >we >>>>>>> >>> keen to get a 6.0.1 release out shortly (like weeks to a month) >>>>>>> to >>>>>>> >speed up >>>>>>> >>> the RDFlib release cycle. >>>>>>> >>> >>>>>>> >>> Cheers, >>>>>>> >>> >>>>>>> >>> Nick >>>>>>> >>> >>>>>>> >>> -- >>>>>>> >>> kind regards >>>>>>> >>> Dr Nicholas Car >>>>>>> >>> Data Systems Architect >>>>>>> >>> >>>>>>> >>> SURROUND Australia Pty Ltd and >>>>>>> >>> SURROUND NZ Limited >>>>>>> >>> >>>>>>> >>> Address Level 9, Nishi Building, >>>>>>> >>> 2 Phillip Law Street >>>>>>> >>> New Acton Canberra 2601 >>>>>>> >>> Mobile +61 477 560 177 >>>>>>> >>> Email nicholas....@surroundaustralia.com >>>>>>> >>> Website https://www.surroundaustralia.com >>>>>>> >>> >>>>>>> >>> Enhancing Intelligence Within Organisations >>>>>>> >>> delivering evidence that connects decisions to outcomes >>>>>>> >>> >>>>>>> >>> Dr Nicholas Car >>>>>>> >>> Adjunct Senior Lecturer >>>>>>> >>> >>>>>>> >>> Research School of Computer Science >>>>>>> >>> >>>>>>> >>> The Australian National University, >>>>>>> >>> Canberra ACT Australia >>>>>>> >>> +61 477 560 177 >>>>>>> >>> nicholas....@anu.edu.au >>>>>>> >>> https://cs.anu.edu.au/people/nicholas-car >>>>>>> >>> https://orcid.org/0000-0002-8742-7730 >>>>>>> ><https://www.surroundaustralia.com> >>>>>>> >>> >>>>>>> >>> >>>>>>> >>> -- >>>>>>> >>> http://github.com/RDFLib >>>>>>> >>> --- >>>>>>> >>> You received this message because you are subscribed to the >>>>>>> Google >>>>>>> >Groups >>>>>>> >>> "rdflib-dev" group. >>>>>>> >>> To unsubscribe from this group and stop receiving emails from it, >>>>>>> >send an >>>>>>> >>> email to rdflib-dev+unsubscr...@googlegroups.com. >>>>>>> >>> To view this discussion on the web visit >>>>>>> >>> >>>>>>> > >>>>>>> https://groups.google.com/d/msgid/rdflib-dev/CAP7nqh19yjpwB8EoHVqs5QzKug_rSq1X%2BfFHfnFtOJBdZ1RwYg%40mail.gmail.com >>>>>>> >>> >>>>>>> >< >>>>>>> https://groups.google.com/d/msgid/rdflib-dev/CAP7nqh19yjpwB8EoHVqs5QzKug_rSq1X%2BfFHfnFtOJBdZ1RwYg%40mail.gmail.com?utm_medium=email&utm_source=footer >>>>>>> > >>>>>>> >>> . >>>>>>> >>> >>>>>>> >> -- >>>>>>> >> http://github.com/RDFLib >>>>>>> >> --- >>>>>>> >> You received this message because you are subscribed to the Google >>>>>>> >Groups >>>>>>> >> "rdflib-dev" group. >>>>>>> >> To unsubscribe from this group and stop receiving emails from it, >>>>>>> >send an >>>>>>> >> email to rdflib-dev+unsubscr...@googlegroups.com. >>>>>>> >> To view this discussion on the web visit >>>>>>> >> >>>>>>> > >>>>>>> https://groups.google.com/d/msgid/rdflib-dev/CADyR_r1Q_hvfnufYVD0YLYhP%3DwEXnjsi5ucpjzWK_owyYfsfnQ%40mail.gmail.com >>>>>>> >> >>>>>>> >< >>>>>>> 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