Here's a bit of stuff I remember coming up on radar...
Given a BNF grammar, yacker writes parsers in C, C++, perl and python. I use it for tracking evolution in languages that I've implemented. Also nice to settle LL(1)/LALR(1) issues in real time.
SPARQL in WSDL (SPDL)
WSDL (and its embedded XML Schema) have annotation mechansims. Adding WSDL and XML Schema annotations that associate RDF GraphTerms with allows a mapping between SPARQL triples and a locations in a SOAP message. See the write-up and the write-up of the subsidiary SPAT language.
MySQL+SPARQL — LillyGrants project
Having played with mapping SPARQL (and Algae2) queries to SQL, I decided to move that logic into mysqld, allowing arbitrary clients of the conventional MySQL protocol (perl, dbi, ODBC, JDBC) use of it with no modification. See the code, write-up and some earlier notes.
RDAL - RDF Annotations Language — another schema annotations, this time for Relax NG. RDAL associates semantic actions (stored in RNG Annotations) with call-outs to a generic API; implemented as a validating XSLT with callouts to another XSLT library.
media type identification
As web protocols are are more and more stacked, the conventional two-tier media-type mechanism becomes insufficient to hint to applications that they may or may not have some utility in looking at the entity. The list of IANA media types is available in a general IANA registry.
Machine understanding implies machines are told what consitutes sufficient processing. I actually don't even remember writing this proposal.
Briefly describe and contrast a set of XML protocols. RPC and messaging, mostly.
The modularity of XML specifications deliniates a set of functionality boundries. Different documents will require differnet modules. This document is a plea for a taxonmy of modules names, ordering and optional processing directives.
provides an algorithmic transformation of WSDL document to an RDF model.
example of use of the RDF WSDL Mapping.
NOT DONE - barely even started - don't look here.
survey of web service research from the RDF perspective.
Resource nodes to describe documents, analogous to i-nodes, implemented over http extensions.
Topic Maps describe associations of objects (identified by URI). RDF describes relationships between objects. This document describes a few algorithmic mappings between the two.
Semantic schema annotation
The above perl RDF parser uses an XML-centric grammer with scripted actions associated with each production. This workes to parser many forms of XML. I hope this work leads language requirements for a general schema annotation language.
This provides an alternative to the an XML-centric grammer approach used by the perllib parser.
A way to present a user with policies from a published P3P policy.
Many communities decide to use RDF or Topic Maps or UML without understanding the overlaps or constrasts in expressivity of those systems. This paper attempts to reduce FUD (fear, uncertainty and doubg) and promote some common understanding.
This paper explores RDF access to an OrderTracking database and demonstrates practical queries to the database.
We can get much more efficient use of databases if we normalize our data into conventional relations. This paper demonstrates that this normalizations need not sacrifice flexibility of expression.
Many RDF database implementations support an attribution or context. There is no standard way to do this. This paper explores some alternatives and discusses their respective pros and cons.
RDF query facilities:
Similar to the XML protocol matrix.
storage implications on query efficiency
RDF SQL mapping paper also discusses this.
Protocol Extension Protocol
Abstrace API for access to RDF datastores. Has concrete bindings in SOAP and HTTP GET/PUT/POST/DELETE.
Recent & Upcoming Travel
10 Jun 0800 UN173 BOSc→SFO 20 Jun 0810 AC563 SFO →YVR 25 Jun 1100 UA768 YVR →ORD (26 Jun) 26 Jun 0630 UA525 ORD →BOS
31 Jul 1730 AF337 BOSe→CDGe 0645 (20 Oct) 10 Aug 1315 AF332 CDGf→BOSe 1555