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RDF Resources in AI & NLP

Wikipedia: 
Category:RDF | Graph Database | Graph Traversal | Knowledge Extraction | RDFa | RDF feed | RDF Schema | Semantic Reasoner | Triplestore (RDF Database)
Notes:
- More expressive models, beyond the label systems implemented in RDF, OWL and SKOS, are needed to capture the relation between natural language constructs and ontological structures.
- LexInfo is a RDF model for describing linguistic information of ontologies.
- The RDF data model is similar to classic conceptual modeling approaches such as entity-relationship or class diagrams.
- Triples are the basic components of RDF which resemble simple sentences in natural language of the form subject-verb-object.
- Relational databases may be converted into RDF, and become accessible to SPARQL, with D2RQ.  
- Both RDF and AIML are XML dialects and therefore may be translated using XSLT.  
- RDFS comes with a specific labeling relation rdfs:label which can be useful to add natural language terms to a class. 
- RDF played an important role as a basis for DAML, the DARPA Agent Markup Language; much of the work in DAML has now been incorporated into OWL, the Web Ontology Language.
- URDF is the Unified Robot Description Format, which is an XML format for representing a robot model.
- SeRQL is the Sesame RQL, RDFs Query Language.
- SPARQL stands for "Simple Protocol And RDF Query Language".
- eRQL (Easy RDF Query Language) is an intuitive easy to use query language.
Software:

AlchemyAPI provides comprehensive support for RDF and Linked Data, enabling any content to be brought into the "Semantic Web"

AllegroGraph 4.4 RDFStore (see also: Managed AllegroGraph Hosting in the Cloud) .. by @Franzinc 

Cumulus is an RDF store on cloud-based architectures, a REST-based API with CRUD operations to manage RDF data 

dbpedia.org is a community endeavor which is harvesting RDF subject-property-object triples from Wikipedia, and is now an RDF interlinking resource

DERI Pipes produce as an output streams of data (e.g. XML, RDF,JSON) that can be used by applications

D2RQ API provides access to relational database content from within the Jena and Sesame RDF frameworks 

EMail RDFizer consists of Python scripts that convert email to RDF (using an RDF/XML syntax) .. mbox2rdf & email2rdf

Freebase RDF service will find Freebase RDF (RDFa) identifiers.

Jena framework is an API for reading, processing and writing RDF data in XML, N-triples and Turtle formats

Joseki is an HTTP engine that supports the SPARQL Protocol and the SPARQL RDF Query language

JRDF - An RDF Library in Java

Intellidimension - RDF API is a comprehensive RDF API created for the Microsoft.NET Framework.

MAGENTIX (agent platform for open Multiagent Systems) uses RDF not only as a the content language for the message, but also as the language in which the message itself is expressed

Mulgara is a scalable RDF database written entirely in Java

OpenCalais turns unstructured HTML into semantically marked up data, returning a rich set of RDF triples describing various aspects of the content

OWLIM is a family of semantic repositories, or RDF database management systems

Plack-Middleware-RDF-Flow provides a PSGI application to serve Linked Data

Protege-OWL API is an open-source Java library for the Web Ontology Language and RDF(S).

Puelia is a PHP implemention of the Linked Data API specification

RAP - RDF API for PHP is a Semantic Web toolkit for PHP developers.

librdf.org/raptor .. open source C library that provides a set of parsers and serializers that generate RDF triples by parsing syntaxes

RDFbus is Ruby middleware for constructing RDF changesets/transactions and transmitting RDF publish/subscribe payloads

RDFLib is a Python library for working with RDF

Semantic Web Spaces is based on Linda and it extends classical Linda model with new types of tuples, containing RDF statements

Sesame is an extensible Java framework for storing, querying and inferencing for RDF

Sparks Prism is the first JQuery/JavaScript library designed for filtering and visualising RDF data using SPARQL

Sparta is an Python API for RDF that is designed to help easily learn and navigate the Semantic Web

structWSF is a platform-independent Web services framework for accessing and exposing structured RDF data

SWI-Prolog provides a Semantic Web Library dealing with the RDF data extracted from RDF(S)

TopBraid Composer can convert XML Schema (and their XML instance files) into RDF/OWL models 

Triplify is a small plugin for Web applications, which reveals the semantic structures encoded in relational databases by making database content available as RDF

Triplipse is a visualization tool for the Resource Description Framework (RDF) within Eclipse

Wordnet 3.0 in RDF

XML2RDF is a transformation from XML to RDF via XSLT.

xOperator is a semantic agent for xmpp / jabber network which finds and shares content about resources (using RDF/SPARQL)
References:
2012

Experience with transformation of bibliographic data into linked data (2012) [PDF] .. by Jindřich Mynarz @jindrichmynarz etc

2011

A Comparison of RDB-to-RDF Mapping Languages (2011) [PDF] .. by Matthias Hert etc

A cognitive approach to web-based intelligent agents: The TRIPLE architecture (2011) .. by Maurice Grinberg @mauricegrinberg

Beyond RDF Links-Exploring the Semantic Web with the Help of Formal Concepts (2011) [PDF] .. by Markus Kirchberg etc

Effective and efficient entity search in RDF data (2011) [PDF] .. by Roi Blanco etc

English Access to Structured Data (2011) [PDF] .. by Kyle D. Richardson etc
"In the DARPA-sponsored Machine Reading project, an ontology has been provided (encoded in RDF) ...."
Exploiting RDFS and OWL for Integrating Heterogeneous, Large-Scale, Linked Data Corpora (2011) [PDF] .. thesis by Aidan Hogan

Extracting events from wikipedia as RDF triples linked to widespread semantic web datasets (2011) .. by Carlo Aliprandi etc

Growing Triples on Trees: an XML-RDF Hybrid Model for Annotated Documents (2011) [PDF] .. by François Goasdoué etc

IfiPipes - The RDF UI Widget Framework (2011) [PDF] .. by Clemens Wilding @wigginus

Interactive Reasoning in Uncertain RDF Knowledge Bases (2011) [PDF] .. by Timm Meiser etc

Keyword search over RDF graphs (2011) [PDF] .. by Shady Elbassuoni & Roi Blanco

Processing SPARQL queries with regular expressions in RDF databases (2011) .. by Jinsoo Lee etc

Rapid Development of Multimodal Dialogue Applications with Semantic Models (2011) [PDF] .. by Robert Neßelrath & Daniel Porta {attached below}

Simple reasoning for contextualized rdf knowledge (2011) [PDF] .. by Mathew Joseph & Luciano Serafini

The RDFa Content Editor-From WYSIWYG to WYSIWYM (2011) .. by Ali Khalili & Sören Auer {attached below}

XSLT Conversion between XLIFF and RDF (2011) [PDF] .. by Dimitra Anastasiou

2010

Accessing the Web of Data through embodied virtual characters (2010) [PDF] .. by Philipp Cimiano & Stefan Kopp [Google Scholar] 

Active knowledge: dynamically enriching RDF knowledge bases by web services (2010) [PDF] .. by Nicoleta Preda etc [Google Scholar] 

An Unsupervised Approach for Acquiring Ontologies and RDF Data from Online Life Science Databases (2010) .. by Saqib Mir etc [Google Scholar] 

Basic Help and Teachable Agent (2010) [PDF] .. by Michael Wissner etc [Google Scholar]
"Since all the conceptual knowledge communicated for the Basic Help is represented in a RDF-based way as described above, we first parse it using the OWL API."
Explanations in dialogue systems through uncertain RDF knowledge bases (2010) [PDF] .. by Daniel Sonntag & Martin Theobald [Google Scholar]
"The dialogue system acts as the middleware between the clients and the backend services (i.e., the RDF repositories with an online API) ..."

"In previous implementations of dialogue system backends without URDF, weused SPARQL queries because they are the de facto standard."
GOSPL: Grounding Ontologies with Social Processes and Natural Language (2010) .. by Christophe Debruyne (@chrdebru) etc [Google Scholar] 

HYPERBUG: A Scalable Natural Language Generation Approach (2010) [PDF] .. by Martin Klarner [Google Scholar] 

Impact of Semantic Web on the Development of Spoken Dialogue Systems (2010) .. by Masahiro Araki & Yu Funakura [Google Scholar]
"Sonntag et al. proposed a rapid prototyping of a spoken dialogue system using RDF/OWL as a knowledge representation and SPARQL (Query Language for RDF) as a query language."
Optimizing real-time RDF data streams (2010) [PDF] .. by Joshua Shinavier @joshsh [Google Scholar] 

Silk-Generating RDF Links while publishing or consuming Linked Data (2010) [PDF] .. by Anja Jentzsch etc [Google Scholar] 

2009

An open-source natural language generator for OWL ontologies and its use in Protégé and Second Life (2009) [PDF] .. by Dimitrios Galanis etc [Google Scholar] 

Analogy making in the TRIPLE model (2009) [PDF] .. by Maurice Grinberg & Stefan Kostadinov [Google Scholar] 

Building service-based applications for the iphone using rdf: a tourism application (2009) .. by Javier Palanca (Cámara) etc [Google Scholar] 

LexiRes RDF/OWL Editor: Maintaining Multilingual Resources (2009) [PDF] .. by Ernesto William De Luca & Birte Lonneker-Rodman [Google Scholar] 

The TRIPLE Cognitive Architecture: Implementation of Embodied Agents Based on a Cognitive Model (2009) [PDF] .. by Maurice Grinberg & Stefan Kostadinov etc [Google Scholar] 

2008

A semantic layer on semi-structured data sources for intuitive chatbots (2008) .. by Agnese Augello etc [Google Scholar] 

FABilT-finding answers in a billion triples (2008) [PDF] .. by Mathieu d'Aquin etc [Google Scholar] 

Integrating metaphor information into RDF/OWL EuroWordNet (2008) [PDF] .. by Ernesto William De Luca & Birte Lonneker-Rodman [Google Scholar] 

Linguistic Watermark 3.0: an RDF framework and a software library for bridging language and ontologies in the Semantic Web (2008) [PDF] .. by Maria Teresa Pazienza etc [Google Scholar] 

The design of a semantic web compatible content language for agent communication (2008) [PDF] .. by Riza Cenk Erdur & Inanç Seylan [Google Scholar]
"By the standardization of an RDF query language, namely SPARQL, the lack of query statements in OWL is not a serious limitation anymore."
The triple model: Combining cutting-edge web technologies with a cognitive model in an ECA (2008) [PDF] .. by Maurice Grinberg & Stefan Kostadinov [Google Scholar]
"The RDF-based agent LTM [long term memory] provides the permanent storage of the agent knowledge."
2007

A RDF and OWL-Based Temporal Context Reasoning Model for Smart Home (2007) [PDF] .. by Hsien-Chou Liao & Chien-Chih Tu [Google Scholar] 

Enhancing AIML Bots using Semantic Web Technologies (2007) .. by Eric Freese @efreese [Google Scholar]

2006

Integrating owl ontologies with a dialogue manager (2006) [PDF] .. by Guillermo Pérez etc [Google Scholar] 

2005

Representing Probabilistic Relations in RDF (2005) [PDF] .. by Yoshio Fukushige [Google Scholar] 

2004

Conversational Agents as Web Services (2004) .. {attached below} .. by Paul Tarau & Elizabeth Figa [Google Scholar] 

D2RQ-treating non-RDF databases as virtual RDF graphs (2004) [PDF] .. by Christian Bizer & Andy Seaborne [Google Scholar] 

Knowledge-based conversational agents and virtual storytelling (2004) [PDF] .. by Paul Tarau & Elizabeth Figa [Google Scholar]
"The architecture uses an XML-based Web Interface, RDF-based Semantic Web data, object-oriented content hierarchies and a Prolog-based natural language and a knowledge processor."
2003

Generating Responses and Explanations from RDF/XML and DAML+OIL (2003) [PDF] .. by Graham Wilcock & Kristiina Jokinen [Google Scholar]

Knowledge Intensive Conversational Agents: a Logic Programming Approach (2003) .. {attached below} .. by Paul Tarau & Elizabeth Figa [Google Scholar] 

Talking OWLs: Towards an Ontology Verbalizer (2003) [PDF] .. by Graham Wilcock [Google Scholar]
See also:
JRDF (Java Resource Description Framework) | Lexinfo | Monrai Cypher | NaturalOWL | OWLJessKB | QALL-ME | RDF & AIML | RDFizers | Sesame & Dialog Systems | Texai 

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v.1
Conversational Agents as Web Services (2004).pdf
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Marcus Endicott,
Feb 15, 2012 10:32 AM
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v.1
The RDFa Content Editor (2011).pdf
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Marcus Endicott,
Feb 14, 2012 10:40 AM
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v.1
ijcai-krdps2011.pdf
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Marcus Endicott,
Feb 15, 2012 7:28 AM