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cwm - Closed World Machine, an RDF/N3 semantic web data processor

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NAME

cwm - Closed World Machine, an RDF/N3 semantic web data processor

DESCRIPTION

Command line RDF/N3 tool
<command> <options> <steps> [--with <more args> ]

OPTIONS

--pipe
Don't store, just pipe out *
steps, in order left to right:
--rdf
Input & Output ** in RDF/XML instead of n3 from now on
--n3
Input & Output in N3 from now on. (Default)
--rdf=flags
Input & Output ** in RDF and set given RDF flags
--n3=flags
Input & Output in N3 and set N3 flags
--ntriples
Input & Output in NTriples (equiv --n3=usbpartane -bySubject -quiet)
--language=x
Input & Output in "x" (rdf, n3, etc) --rdf same as: --language=rdf
--languageOptions=y
--n3=sp same as: --language=n3 --languageOptions=sp
--ugly
Store input and regurgitate, data only, fastest *
--bySubject
Store input and regurgitate in subject order *
--no
No output *
(default is to store and pretty print with anonymous nodes) *
--base=<uri>
Set the base URI. Input or output is done as though this were the document URI.
--closure=flags
Control automatic lookup of identifiers (see below) <uri> Load document. URI may be relative to current directory.
--apply=foo
Read rules from foo, apply to store, adding conclusions to store
--patch=foo
Read patches from foo, applying insertions and deletions to store
--filter=foo
Read rules from foo, apply to store, REPLACING store with conclusions
--query=foo
Read a N3QL query from foo, apply it to the store, and replace the store with its conclusions
--sparql=foo
Read a SPARQL query from foo, apply it to the store, and replace the store with its conclusions
--rules
Apply rules in store to store, adding conclusions to store
--think
as -rules but continue until no more rule matches (or forever!)
--engine=otter
use otter (in your $PATH) instead of llyn for linking, etc
--why
Replace the store with an explanation of its contents
--why=u
proof tries to be shorter
--mode=flags
Set modus operandi for inference (see below)
--reify
Replace the statements in the store with statements describing them.
--dereify
Undo the effects of --reify
--flatten
Reify only nested subexpressions (not top level) so that no {} remain.
--unflatten
Undo the effects of --flatten
--think=foo
as -apply=foo but continue until no more rule matches (or forever!)
--purge
Remove from store any triple involving anything in class log:Chaff
--data
Remove all except plain RDF triples (formulae, forAll, etc)
--strings
Dump :s to stdout ordered by :k whereever { :k log:outputString :s }
--crypto
Enable processing of crypto builtin functions. Requires python crypto.
--help
print this message
--revision
print CVS revision numbers of major modules
--chatty=50
Verbose debugging output of questionable use, range 0-99
--sparqlServer
instead of outputting, start a SPARQL server on port 8000 of the store
--sparqlResults
After sparql query, print in sparqlResults format instead of rdf
finally:
--with
Pass any further arguments to the N3 store as os:argv values
* mutually exclusive ** doesn't work for complex cases :-/

EXAMPLES

cwm --rdf foo.rdf --n3 --pipe
Convert from rdf/xml to rdf/n3
cwm foo.n3 bar.n3 --think
Combine data and find all deductions
cwm foo.n3 --flat --n3=spart

Mode flags affect inference extending to the web:

r
Needed to enable any remote stuff.
a
When reading schema, also load rules pointed to by schema (requires r, s)
E
Errors loading schemas of definitive documents are ignored
m
Schemas and definitive documents loaded are merged into the meta knowledge (otherwise they are consulted independently)
s
Read the schema for any predicate in a query.
u
Generate unique ids using a run-specific
Closure flags are set to cause the working formula to be automatically expanded to the closure under the operation of looking up:
s
the subject of a statement added
p
the predicate of a statement added
o
the object of a statement added
t
the object of an rdf:type statement added
i
any owl:imports documents
r
any doc:rules documents
E
errors are ignored --- This is independant of --mode=E
n
Normalize IRIs to URIs
e
Smush together any nodes which are = (owl:sameAs)
See http://www.w3.org/2000/10/swap/doc/cwm for more documentation.
Setting the environment variable CWM_RDFLIB to 1 makes Cwm use rdflib to parse rdf/xml files. Note that this requires rdflib.
Flags for N3 output are as follows:-
a Anonymous nodes should be output using the _: convention (p flag or not). d Don't use default namespace (empty prefix) e escape literals --- use \u notation i Use identifiers from store - don't regen on output l List syntax suppression. Don't use (..) n No numeric syntax - use strings typed with ^^ syntax p Prefix suppression - don't use them, always URIs in <> instead of qnames. q Quiet - don't output comments about version and base URI used. r Relative URI suppression. Always use absolute URIs. s Subject must be explicit for every statement. Don't use ";" shorthand. t "this" and "()" special syntax should be suppressed. u Use \u for unicode escaping in URIs instead of utf-8 %XX v Use "this log:forAll" for @forAll, and "this log:forAll" for "@forSome". / If namespace has no # in it, assume it ends at the last slash if outputting.
Flags for N3 input:
B Turn any blank node into an existentially qualified explicitly named node.
Flags to control RDF/XML output (after --rdf=) areas follows:
b - Don't use nodeIDs for Bnodes c - Don't use elements as class names d - Default namespace supressed. l - Don't use RDF collection syntax for lists r - Relative URI suppression. Always use absolute URIs. z - Allow relative URIs for namespaces
Flags to control RDF/XML INPUT (after --rdf=) follow:
S
- Strict spec. Unknown parse type treated as Literal instead of error.
T
- take foreign XML as transparent and parse any RDF in it
(default is to ignore unless rdf:RDF at top level)
L
- If non-rdf attributes have no namespace prefix, assume in local <#> namespace
D
- Assume default namespace declared as local document is assume xmlns=""
R
- Do not require an outer <rdf:RDF>, treating the file as RDF content (opposite of T)
Note: The parser (sax2rdf) does not support reification, bagIds, or parseType=Literal.
It does support the rest of RDF incl. datatypes, xml:lang, and nodeIds.
June 2015 cwm 1.197