Search results for "drama"

Hits ?▲	Authors	Title	Venue	Year	Link	Author keywords
132	María Arinbjarnar, Daniel Kudenko	Schemas in Directed Emergent Drama.	ICIDS	2008	DBLP DOI BibTeX RDF
129	Mark J. Nelson, Michael Mateas, David L. Roberts 0001, Charles Lee Isbell Jr.	Declarative Optimization-Based Drama Management in Interactive Fiction.	IEEE Computer Graphics and Applications	2006	DBLP DOI BibTeX RDF	game-tree search, reinforcement learning, computer gaming, interactive drama, drama management
92	Nye Parry, Helen Bendon, Stephen Boyd Davis, Magnus Moar	Locating Drama: A Demonstration of Location-Aware Audio Drama.	ICIDS	2008	DBLP DOI BibTeX RDF	Audio Drama, Interactivity, GPS, Narrative, Locative Media
86	Manish Mehta 0001, Steven Dow, Michael Mateas, Blair MacIntyre	Evaluating a conversation-centered interactive drama.	AAMAS	2007	DBLP DOI BibTeX RDF	evaluation, embodied conversational agents, interactive drama, believable agents
81	Hiroshi Uehara, Kenichi Yoshida	Annotating TV Drama based on Viewer Dialogue - Analysis of Viewers' Attention Generated on an Internet Bulletin Board -.	SAINT	2005	DBLP DOI BibTeX RDF
81	Dieter Van Rijsselbergen, Barbara Van De Keer, Maarten Verwaest, Erik Mannens, Rik Van de Walle	Movie script markup language.	ACM Symposium on Document Engineering	2009	DBLP DOI BibTeX RDF	drama production, screenplay, narratives, xml
74	Andrea Corradini 0002, Manish Mehta 0001, Santiago Ontañón	Evaluation of a Drama Manager Agent for an Interactive Story-Based Game.	ICIDS	2009	DBLP DOI BibTeX RDF	interactive fiction game, evaluation, gameplay, drama management
74	Dieter Van Rijsselbergen, Barbara Van De Keer, Rik Van de Walle	The canonical expression of the drama product manufacturing processes.	Multim. Syst.	2008	DBLP DOI BibTeX RDF	IT-based broadcasting, Drama production, Product manufacturing, Workflows, Processes
74	Nicolas Szilas, Jue Wang, Monica Axelrad	Towards minimalism and expressiveness in interactive drama.	DIMEA	2008	DBLP DOI BibTeX RDF	animation engine, author centered design, authoring, minimalism, interactive narrative, interactive drama
74	Frank Allan Hansen, Karen Johanne Kortbek, Kaj Grønbæk	Mobile Urban Drama - Setting the Stage with Location Based Technologies.	ICIDS	2008	DBLP DOI BibTeX RDF	Mobile drama, location-based technology, Semacodes, interactive audio, sensor/actuator based interaction, urban computing
68	Barry G. Silverman, Michael Johns, Ransom Weaver, Joshua Mosley	Authoring Edutainment Stories for Online Players (AESOP): Introducing Gameplay into Interactive Dramas.	International Conference on Virtual Storytelling	2003	DBLP DOI BibTeX RDF	videogame generator, stealth learning, agent ap- proach, training, interactive drama, role-playing games
61	Ivo Swartjes, Mariët Theune	An Experiment in Improvised Interactive Drama.	INTETAIN	2009	DBLP DOI BibTeX RDF	Dramatic Presence, Improvisational Theatre, Interactive Storytelling, Interactive Drama
61	Zeng-Wei Hong, Kai-Yi Chin, Jim-Min Lin	Developing embodied agent-based user interface by using interactive drama markup language.	ICUIMC	2009	DBLP DOI BibTeX RDF	ECA-based user interface, branching narrations, embodied conversational agent, interactive drama, markup language
61	Nicolas Szilas, Jason Barles, Manolya Kavakli	An implementation of real-time 3D interactive drama.	Comput. Entertain.	2007	DBLP DOI BibTeX RDF	behavior engine, template-based natural language generation, human computer interaction, agents, interactive narrative, virtual characters, interactive drama, narrative structures, narrative intelligence
61	Steven Dow, Manish Mehta 0001, Ellie Harmon, Blair MacIntyre, Michael Mateas	Presence and engagement in an interactive drama.	CHI	2007	DBLP DOI BibTeX RDF	cross-media study, virtual or augmented reality experiences, presence, engagement, interactive drama, qualitative study
61	Li Zhang 0013, Marco Gillies, John A. Barnden, Robert J. Hendley, Mark G. Lee, Alan M. Wallington	Affect Detection and an Automated Improvisational AI Actor in E-Drama.	Artifical Intelligence for Human Computing	2007	DBLP DOI BibTeX RDF	E-drama, improvisational AI actor, emotional behaviour and metaphor, affect detection
61	Stacey Hand, Duane Varan	Exploring the Effects of Interactivity in Television Drama.	EuroITV	2007	DBLP DOI BibTeX RDF	Audience Research, Interactive television, Interactive Narrative, Drama
61	Nicolas Szilas, Manolya Kavakli	PastMaster@storytelling: a controlled interface for interactive drama.	IUI	2006	DBLP DOI BibTeX RDF	adaptive interfaces, interactive narrative, usability study, interactive drama, interaction history
61	Steven Dow, Manish Mehta 0001, Annie Lausier, Blair MacIntyre, Michael Mateas	Initial lessons from AR Façade, an interactive augmented reality drama.	Advances in Computer Entertainment Technology	2006	DBLP DOI BibTeX RDF	augmented reality, artificial intelligence, games, natural language, entertainment, embodiment, experience design, interactive drama
61	Ben Medler, Brian Magerko	Scribe: A Tool for Authoring Event Driven Interactive Drama.	TIDSE	2006	DBLP DOI BibTeX RDF	authoring tool, interactive drama, story representation
61	Mark J. Nelson, David L. Roberts 0001, Charles Lee Isbell Jr., Michael Mateas	Reinforcement learning for declarative optimization-based drama management.	AAMAS	2006	DBLP DOI BibTeX RDF	reinforcement learning, interactive entertainment, drama management
56	María Arinbjarnar, Daniel Kudenko	Duality of Actor and Character Goals in Virtual Drama.	IVA	2009	DBLP DOI BibTeX RDF
56	Ritu Chadha, Cho-Yu Jason Chiang	DRAMA: Distributed Policy Management for MANETs.	POLICY	2008	DBLP DOI BibTeX RDF	policy MANET
56	Mei Si, Stacy Marsella, David V. Pynadath	Proactive Authoring for Interactive Drama: An Author's Assistant.	IVA	2007	DBLP DOI BibTeX RDF
56	Dieter Van Rijsselbergen, Maarten Verwaest, Barbara Van De Keer, Rik Van de Walle	Introducing the Data Model for a Centralized Drama Production System.	ICME	2007	DBLP DOI BibTeX RDF
56	Mark O. Riedl, Andrew Stern	Failing Believably: Toward Drama Management with Autonomous Actors in Interactive Narratives.	TIDSE	2006	DBLP DOI BibTeX RDF
56	Stacy Marsella	Interactive Pedagogical Drama: Carmen's Bright IDEAS Assessed.	IVA	2003	DBLP DOI BibTeX RDF
56	Utomo Sarjono Putro, Manahan Siallagan, Santi Novani, Dhanan Sarwo Utomo	Managing Collaboration Using Agent Based Simulation.	PRIMA	2008	DBLP DOI BibTeX RDF	Dilemma, Drama Theory, Emotion, Negotiation, Agent based Simulation
56	Parthasarathi Banerjee	A sketch of blissful actions and democracy based upon rasa.	AI Soc.	2007	DBLP DOI BibTeX RDF	Indian drama, Rasa, Folk life, Emotion, Language, Dialogue, Action, Institutions, Democracy
56	Nik Baerten, Peter J. Braspenning	MAS Dynamics on Stage.	Virtual Real.	2003	DBLP DOI BibTeX RDF	Multi-Agent Systems, Conceptual Model, Intelligent Interfaces, Virtual Actors, Drama
50	Kurt Maly, Edwin C. Foudriat, David Game, Ravi Mukkamala, C. Michael Overstreet	Traffic Placement Policies for Multi-Band Network.	SIGCOMM	1989	DBLP DOI BibTeX RDF
49	Nicolas Szilas, Monica Axelrad	To Be or Not to Be: Towards Stateless Interactive Drama.	ICIDS	2009	DBLP DOI BibTeX RDF	authoring, interactive narrative, Interactive drama, stateless
49	Nicolas Szilas	The mutiny: an interactive drama on IDtension.	DIMEA	2008	DBLP DOI BibTeX RDF	global agency, interactive narrative, interactive drama
49	Georg Struck, Ralf Böse, Ulrike Spierling	Trying to Get Trapped in the Past - Exploring the Illusion of Presence in Virtual Drama.	ICIDS	2008	DBLP DOI BibTeX RDF	virtual cultural heritage, stereoscopic video, presence, Immersion, spatial audio, virtual storytelling, drama, wave field synthesis
49	Li Zhang 0013, John A. Barnden, Robert J. Hendley, Alan M. Wallington	Exploitation in Affect Detection in Improvisational E-Drama.	IVA	2006	DBLP DOI BibTeX RDF	E-drama, intelligent virtual actor and metaphor, affect detection
49	Josephine Anstey, Dave Pape	Scripting the interactor: an approach to VR drama.	Creativity & Cognition	2002	DBLP DOI BibTeX RDF	VR, virtual reality, intelligent agents, interactive drama
49	J. Michael Moshell, Charles E. Hughes, Dean Reed, Diane Z. Chase, Arlen Chase	Virtual Drama as a Learning Medium: The Caracol Time Travel Project.	VR	2000	DBLP DOI BibTeX RDF	virtual drama, Virtual Academy, learning, role-playing, archaeology
44	Özge Drama, Alexander Badri-Spröwitz	A Control Method to Compensate Ground Level Changes for Running Bipedal Robots.	CoRR	2020	DBLP BibTeX RDF
44	Özge Drama, Johanna Vielemeyer, Alexander Badri-Spröwitz, Roy Muüller	Postural Stability in Human Running with Step-down Perturbations: An Experimental and Numerical Study.	CoRR	2020	DBLP BibTeX RDF
44	Özge Drama, Alexander Badri-Spröwitz	Trunk Pitch Oscillations for Joint Load Redistribution in Humans and Humanoid Robots.	CoRR	2019	DBLP BibTeX RDF
44	Özge Drama, Alexander Badri-Spröwitz	Trunk Pitch Oscillations to Improve Energetics in Bipedal Running Birds and Robots.	CoRR	2019	DBLP BibTeX RDF
44	Özge Drama, Alexander Badri-Spröwitz	Trunk Pitch Oscillations for Joint Load Redistribution in Humans and Humanoid Robots.	Humanoids	2019	DBLP DOI BibTeX RDF
43	Santiago Ontañón, Abhishek Jain 0004, Manish Mehta 0001, Ashwin Ram 0001	Developing a Drama Management Architecture for Interactive Fiction Games.	ICIDS	2008	DBLP DOI BibTeX RDF
43	Steven Dow, Manish Mehta 0001, Blair MacIntyre, Michael Mateas	AR façade: an augmented reality interactve drama.	VRST	2007	DBLP DOI BibTeX RDF
43	Michael Mateas, Andrew Stern	Façade: Architecture and Authorial Idioms for Believable Agents in Interactive Drama.	IVA	2006	DBLP DOI BibTeX RDF
43	Rossana Damiano, Vincenzo Lombardo, Antonio Pizzo	Formal Encoding of Drama Ontology.	International Conference on Virtual Storytelling	2005	DBLP DOI BibTeX RDF
43	Rossana Damiano, Vincenzo Lombardo, Antonio Pizzo	Laying the Foundations for a Formal Theory of Drama.	AI*IA	2005	DBLP DOI BibTeX RDF
43	Mei Si, Stacy Marsella, David V. Pynadath	Thespian: using multi-agent fitting to craft interactive drama.	AAMAS	2005	DBLP DOI BibTeX RDF	authoring tools, pedagogical agents
43	Nicolas Szilas	Stepping into the Interactive Drama.	TIDSE	2004	DBLP DOI BibTeX RDF
43	Chris Flerackers, Rae A. Earnshaw, Gert Vansichem, Frank Van Reeth, Frank Alsema	Creating Broadcast Interactive Drama in an NVE.	IEEE Computer Graphics and Applications	2001	DBLP DOI BibTeX RDF
43	Kengo Nakajima, Jochen Fingberg, Hiroshi Okuda	Parallel 3D Adaptive Compressible Navier-Stokes Solver in GeoFEM with Dynamic Load-Balancing by DRAMA Library.	HPCN	2001	DBLP DOI BibTeX RDF
43	Knut Hartmann, Sandra Hartmann, Matthias Feustel	Motif Definition and Classification to Structure Non-linear Plots and to Control the Narrative Flow in Interactive Dramas.	International Conference on Virtual Storytelling	2005	DBLP DOI BibTeX RDF	Non-linear Plots, Propp Functions, Narrative Control, ChatterBots, WordNet, Authoring Tools, Document Classification, Interactive Drama, Motifs
38	James Skorupski	Storyboard authoring of plan-based interactive dramas.	FDG	2009	DBLP DOI BibTeX RDF
38	Jeong-Jun Suh, Shan Guo Quan, Jeong Doo Park, Jong Hyuk Park, Young Yong Kim	Asymmetric Link Dynamic Routing Algorithm for Ubiquitous Multimedia Services.	MMM (2)	2007	DBLP DOI BibTeX RDF
38	Yundong Cai, Chunyan Miao, Ah-Hwee Tan, Zhiqi Shen 0001	Fuzzy cognitive goal net for interactive storytelling plot design.	Advances in Computer Entertainment Technology	2006	DBLP DOI BibTeX RDF	goal net, story planning, generation, interactive storytelling, fuzzy cognitive maps (FCMs), formation, AI planning, situated learning, plan execution
36	Dongyeon Kim, Kyuhong Park, Youngsok Bang	The effect of TV drama piracy: An analysis of digital piracy users, internet buzz, and TV drama viewership.	Inf. Manag.	2022	DBLP DOI BibTeX RDF
36	Valentino Vranic, Aleksandra Vranic	Drama patterns: extracting and reusing the essence of drama.	EuroPLoP	2019	DBLP DOI BibTeX RDF
36	Rosamund Davies, Paul Rissen, Michael O. Jewell	Adapting historical drama for the web: a model for metadata backed publishing of historical drama programmes.	NHT@HT	2013	DBLP DOI BibTeX RDF
36	Bronwin Patrickson	Multi-user Interactive Drama: A Micro User Drama in Process.	ICIDS	2011	DBLP DOI BibTeX RDF
36	Rossana Damiano, Cristina Gena, Vincenzo Lombardo, Fabrizio Nunnari, Antonio Pizzo	A stroll with Carletto: adaptation in drama-based tours with virtual characters.	User Model. User Adapt. Interact.	2008	DBLP DOI BibTeX RDF	Mobile computing, Cultural heritage, Virtual characters, Interactive drama, Adaptive applications
36	Dana Plautz	A look at Intel's research council funding in sensor networks for feature film production and interactive drama.	Comput. Entertain.	2004	DBLP DOI BibTeX RDF	film production, networks, artificial intelligence, arts, digital media, interactive drama, theatre
35	Blair MacIntyre, Jay David Bolter	Single-narrative, multiple point-of-view dramatic experiences in augmented reality.	Virtual Real.	2003	DBLP DOI BibTeX RDF	Aura, Point-of-view drama, Augmented reality, Interactive drama, Remediation
31	Birgit Endrass, Michael Boegler, Nikolaus Bee, Elisabeth André	What Would You Do in Their Shoes? Experiencing Different Perspectives in an Interactive Drama for Multiple Users.	ICIDS	2009	DBLP DOI BibTeX RDF	distributed behavior planning, Multiagent systems, Interactive storytelling, multi user
31	Rossana Damiano, Vincenzo Lombardo	Value-Driven Characters for Storytelling and Drama.	AI*IA	2009	DBLP DOI BibTeX RDF
31	Chung-Cheng Chiu, Edward Chao-Chun Kao, Hsueh-Min Chang, Von-Wun Soo	AI-RPG Toolkit: Towards A Deep Model Implementation for Improvisational Virtual Drama.	IVA	2007	DBLP DOI BibTeX RDF
31	Kaixian Hu, Keith W. Hipel, Liping Fang	Ivory coast toxic waste dumping dispute: A comparison of the graph model and drama theory.	SMC	2007	DBLP DOI BibTeX RDF
31	Nicolas Szilas, Maurizio Mancini	The Control of Agents' Expressivity in Interactive Drama.	International Conference on Virtual Storytelling	2005	DBLP DOI BibTeX RDF
31	Rachel Lee Knickmeyer, Michael Mateas	Preliminary evaluation of the interactive drama facade.	CHI Extended Abstracts	2005	DBLP DOI BibTeX RDF	game evaluation, hedonic evaluation, retroactive protocol analysis, qualitative evaluation
31	Oskar Preinfalk, Helmut A. Mayer	Automatic construction of drama school timetables based on a generic evolutionary framework for allocation and scheduling problems.	SAC	2004	DBLP DOI BibTeX RDF	allocation and scheduling problems, evolutionary computation, framework architecture
31	Nicolas Szilas, Olivier Marty, Jean-Hugues Réty	Authoring Highly Generative Interactive Drama.	International Conference on Virtual Storytelling	2003	DBLP DOI BibTeX RDF
31	Michael P. Craven, Ian Taylor, Adam Drozd, Jim Purbrick, Chris Greenhalgh, Steve Benford, Mike Fraser 0001, John Bowers 0001, Kai-Mikael Jää-Aro, Bernd Lintermann, Michael Hoch	Exploiting interactivity, influence, space and time to explore non-linear drama in virtual worlds.	CHI	2001	DBLP DOI BibTeX RDF	enterainment applications, virtual reality
31	Michael Mateas	An Oz-Centric Review of Interactive Drama and Believable Agents.	Artificial Intelligence Today	1999	DBLP DOI BibTeX RDF
31	Bart Maerten, Dirk Roose, Achim Basermann, Jochen Fingberg, Guy Lonsdale	DRAMA: A Library for Parallel Dynamic Load Balancing of Finite Element Applications.	Euro-Par	1999	DBLP DOI BibTeX RDF
31	Masafumi Nishida, Yasuo Ariki	Speaker Indexing for News Articles, Debates and Drama in Broadcasted TV Programs.	ICMCS, Vol. 2	1999	DBLP DOI BibTeX RDF	Content-based indexing retrieval, Pattern recognition, video, Image, Multimedia database, speech processing, audio content analysis, Multimedia tools
30	Ulrike Spierling, Nicolas Szilas	Authoring Issues beyond Tools.	ICIDS	2009	DBLP DOI BibTeX RDF	creation process, authoring, interactive storytelling, interactive drama
30	Vesa Kantola, Sauli Tiitta, Katri Mehto, Tomi Kankainen	Using dramaturgical methods to gain more dynamic user understanding in user-centered design.	Creativity & Cognition	2007	DBLP DOI BibTeX RDF	dramaturgical methods, interactive theater, role character, visualization, user-centered design, user profile, design methodology, persona, drama
30	Robert Mosher, Brian Magerko	Personality Templates and Social Hierarchies Using Stereotypes.	TIDSE	2006	DBLP DOI BibTeX RDF	social-hierarchy, personality, stereotypes, interactive drama, synthetic characters
30	Nicolas Szilas, Jean-Hugues Réty	Minimal structures for stories.	SRMC	2004	DBLP DOI BibTeX RDF	human computer interaction, interactive narrative, interactive drama, narrative structures, narrative intelligence
30	Tsuyoshi Moriyama, Masao Sakauchi	Video summarisation based on the psychological content in the track structure.	ACM Multimedia Workshops	2000	DBLP DOI BibTeX RDF	TV drama, time series pattern, track structure, video summarisation, multimedia, human factors, theory
30	Selim Balcisoy, Daniel Thalmann	Interaction between Real and Virtual Humans in Augmented Reality.	CA	1997	DBLP DOI BibTeX RDF	interaction, augmented reality, virtual humans, interactive drama
25	Gabriella Giannachi, Marco Gillies, Nick Kaye, David Swapp	Mediating Performance through Virtual Agents.	IVA	2009	DBLP DOI BibTeX RDF
25	Se-Hyung Park, So-Young Kim, Jinny Hye-Jin Choo, Won-jae Lee, Jun-sang Kang	Using new media to create integrating art therapy: animation therapy.	SIGGRAPH ASIA Educators Program	2009	DBLP DOI BibTeX RDF	art therapy, compulsive use of mass media, game addiction, integrating art therapy, therapeutic method, relaxation
25	Bartosz Michalik, Jerzy R. Nawrocki, Miroslaw Ochodek	3-step knowledge transition: a case study on architecture evaluation.	ICSE	2008	DBLP DOI BibTeX RDF	atam, knowledge transfer, architecture evaluation
25	Michael Mateas	Expressive Intelligence: Artificial Intelligence, Games and New Media.	AI*IA	2007	DBLP DOI BibTeX RDF
25	Sarah Kenderdine	The Irreducible Ensemble: Place-Hampi.	VSMM	2007	DBLP DOI BibTeX RDF	co-evolutionary narrative, omnistereoscopic panoramas, autonomous agency, Hampi, Indian mythology, Symmetrical Archaeology, virtual heritage
25	Wenli Zhang, Xiaomeng Wu, Shunsuke Kamijo, Masao Sakauchi	Semantic video database system with semi-automatic secondary-content generation capability.	Multim. Tools Appl.	2006	DBLP DOI BibTeX RDF	Semantic video content extraction, Object-based annotation, Object-based query, Semantic video system, Region-based model matching, Ontological object model, Object extraction and annotation, Object-based interactive applications, Multimedia applications, Video database
25	Isabel Machado 0001, Paul Brna, Ana Paiva 0001	Tell Me a Story.	Virtual Real.	2005	DBLP DOI BibTeX RDF	Intelligent agents, Narrative, Story generation, Virtual storytelling, Intelligent learning environments
25	Byunghee Jung, Tae-Yeong Kwak, Junehwa Song, Yoon-Joon Lee	Narrative abstraction model for story-oriented video.	ACM Multimedia	2004	DBLP DOI BibTeX RDF	narrative abstraction, story-oriented, film, video abstraction, narrative structure, story understanding
25	Michael Mateas, Andrew Stern	Natural Language Understanding in Façade: Surface-Text Processing.	TIDSE	2004	DBLP DOI BibTeX RDF
25	Parthasarathi Banerjee	Narration, discourse and dialogue: issues in the management of inter-cultural innovation.	AI Soc.	2003	DBLP DOI BibTeX RDF	Utterance, Management, Culture, Innovation, Tacit knowledge
25	Ruth Aylett, Sandy Louchart	Towards a narrative theory of virtual reality.	Virtual Real.	2003	DBLP DOI BibTeX RDF	Virtual reality, Interactivity, User experience, Storytelling, Narrative theory, Emergent narrative
25	Chang-Jiun Tsai, Shian-Shyong Tseng, Yu-Co Wu	A New Architecture of Object-Oriented Rule Base Management System.	TOOLS (31)	1999	DBLP DOI BibTeX RDF	rule package, RBMS, object-oriented, rule base model
18	Leonid Yavits	DRAMA: Commodity DRAM Based Content Addressable Memory.	IEEE Comput. Archit. Lett.	2024	DBLP DOI BibTeX RDF
18	Corinna Coupette, Jilles Vreeken, Bastian Rieck	All the world's a (hyper)graph: A data drama.	Digit. Scholarsh. Humanit.	2024	DBLP DOI BibTeX RDF
18	Gabriel Avelino R. Sampedro	How You Like That?: Development of a Korean Drama Recommendation System Through Sentiment Analysis.	ICEIC	2024	DBLP DOI BibTeX RDF
18	Katarzyna Marak, Milosz Markocki, Piotr Siuda	The Next Level of Horror Entertainment: Facing Fear in Cooperative Interactive Drama Survival Horror Games.	HICSS	2024	DBLP BibTeX RDF
18	Michael Oesterle, Tim Grams, Christian Bartelt	DRAMA at the PettingZoo: Dynamically Restricted Action Spaces for Multi-Agent Reinforcement Learning Frameworks.	HICSS	2024	DBLP BibTeX RDF
18		Retraction Note: AR/VR drama contents for Korean literature by story bank.	Multim. Tools Appl.	2023	DBLP DOI BibTeX RDF
18	Kinnosuke Manabe, Wu-Yuin Hwang, Yan-Wen Chuang	English learning enhanced by collaborative contextual drama in an authentic context.	Interact. Learn. Environ.	2023	DBLP DOI BibTeX RDF
18	Leonid Yavits	DRAMA: Commodity DRAM based Content Addressable Memory.	CoRR	2023	DBLP DOI BibTeX RDF