Semi-Automatic Ontology Development: Processes and Resources

Download Semi-Automatic Ontology Development: Processes and Resources PDF Online Free

Author :
Publisher : IGI Global
ISBN 13 : 1466601892
Total Pages : 341 pages
Book Rating : 4.4/5 (666 download)

DOWNLOAD NOW!


Book Synopsis Semi-Automatic Ontology Development: Processes and Resources by : Pazienza, Maria Teresa

Download or read book Semi-Automatic Ontology Development: Processes and Resources written by Pazienza, Maria Teresa and published by IGI Global. This book was released on 2012-02-29 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book includes state-of-the-art research results aimed at the automation of ontology development processes and the reuse of external resources becoming a reality, thus being of interest for a wide and diversified community of users"--

Semi-automatic Ontology Development

Download Semi-automatic Ontology Development PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (978 download)

DOWNLOAD NOW!


Book Synopsis Semi-automatic Ontology Development by : Maria Teresa Pazienza

Download or read book Semi-automatic Ontology Development written by Maria Teresa Pazienza and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book includes state-of-the-art research results aimed at the automation of ontology development processes and the reuse of external resources becoming a reality, thus being of interest for a wide and diversified community of users"--Provided by publisher.

Innovations, Developments, and Applications of Semantic Web and Information Systems

Download Innovations, Developments, and Applications of Semantic Web and Information Systems PDF Online Free

Author :
Publisher : IGI Global
ISBN 13 : 1522550437
Total Pages : 493 pages
Book Rating : 4.5/5 (225 download)

DOWNLOAD NOW!


Book Synopsis Innovations, Developments, and Applications of Semantic Web and Information Systems by : Lytras, Miltiadis D.

Download or read book Innovations, Developments, and Applications of Semantic Web and Information Systems written by Lytras, Miltiadis D. and published by IGI Global. This book was released on 2018-01-19 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last few years, there has been an increased advancement and evolution in semantic web and information systems in a variety of fields. The integration of these approaches to ontology engineering, sophisticated methods and algorithms for open linked data extraction, and advanced decision-making creates new opportunities for a bright future. Innovations, Developments, and Applications of Semantic Web and Information Systems is a critical scholarly resource that discusses integrated methods of research and analytics in information technology. Featuring coverage on a broad range of topics, such as cognitive computing, artificial intelligence, machine learning, data analysis, and algorithms, this book is geared towards researchers, academicians, and professionals seeking current information on semantic web and information systems.

The People’s Web Meets NLP

Download The People’s Web Meets NLP PDF Online Free

Author :
Publisher : Springer Science & Business Media
ISBN 13 : 3642350852
Total Pages : 394 pages
Book Rating : 4.6/5 (423 download)

DOWNLOAD NOW!


Book Synopsis The People’s Web Meets NLP by : Iryna Gurevych

Download or read book The People’s Web Meets NLP written by Iryna Gurevych and published by Springer Science & Business Media. This book was released on 2013-04-03 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collaboratively Constructed Language Resources (CCLRs) such as Wikipedia, Wiktionary, Linked Open Data, and various resources developed using crowdsourcing techniques such as Games with a Purpose and Mechanical Turk have substantially contributed to the research in natural language processing (NLP). Various NLP tasks utilize such resources to substitute for or supplement conventional lexical semantic resources and linguistically annotated corpora. These resources also provide an extensive body of texts from which valuable knowledge is mined. There are an increasing number of community efforts to link and maintain multiple linguistic resources. This book aims offers comprehensive coverage of CCLR-related topics, including their construction, utilization in NLP tasks, and interlinkage and management. Various Bachelor/Master/Ph.D. programs in natural language processing, computational linguistics, and knowledge discovery can use this book both as the main text and as a supplementary reading. The book also provides a valuable reference guide for researchers and professionals for the above topics.

Innovative Professional Development Methods and Strategies for STEM Education

Download Innovative Professional Development Methods and Strategies for STEM Education PDF Online Free

Author :
Publisher : IGI Global
ISBN 13 : 1466694726
Total Pages : 330 pages
Book Rating : 4.4/5 (666 download)

DOWNLOAD NOW!


Book Synopsis Innovative Professional Development Methods and Strategies for STEM Education by : Dikilita?, Kenan

Download or read book Innovative Professional Development Methods and Strategies for STEM Education written by Dikilita?, Kenan and published by IGI Global. This book was released on 2015-10-19 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Professional development of educators is an complex process through which teachers strive continuously for pedagogical improvement. In that sense, professional growth benefits learners and teachers while also promoting the quality of the schools, colleges, and academic departments where it takes place. Innovative Professional Development Methods and Strategies for STEM Education is an authoritative publication featuring the latest scholarly research on a wide range of professional advancement topics in STEM education with special emphasis on content, process, implementation, and impact, as well as on the implications for teachers, educators, and administrators. Highlighting comprehensive research across a broad scope of relevant issues including, but not limited to, teacher training, development models, and the implementation of leadership practices, this book is a seminal reference source for STEM professionals working in schools, colleges, and various science and mathematics departments at secondary and post-secondary institutions.

Semi-automatic ontology engineering and ontology supported document indexing in a multilingual environment

Download Semi-automatic ontology engineering and ontology supported document indexing in a multilingual environment PDF Online Free

Author :
Publisher : diplom.de
ISBN 13 : 3832469052
Total Pages : 134 pages
Book Rating : 4.8/5 (324 download)

DOWNLOAD NOW!


Book Synopsis Semi-automatic ontology engineering and ontology supported document indexing in a multilingual environment by : Boris Lauser

Download or read book Semi-automatic ontology engineering and ontology supported document indexing in a multilingual environment written by Boris Lauser and published by diplom.de. This book was released on 2014-04-02 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inhaltsangabe:Introduction: The management of large amounts of information and knowledge is of ever increasing importance in today s large organisations. With the ongoing ease of supplying information online, especially in corporate intranets and knowledge bases, finding the right information becomes an increasingly difficult task. Today s search tools perform rather poorly in the sense that information access is mostly based on keyword searching or even mere browsing of topic areas. This unfocused approach often leads to undesired results. The following example illustrates the problem more clearly: An agriculture scientist would like to find out which organisation established the Agreement on Agriculture. A simple search for establish Agreement on Agriculture might result in a huge list of documents containing these words, but actually none of them containing the desired result: WTO or World Trade Organisation. The problem becomes even worse if the result searched for only appears in a foreign language document. Semantically annotated documents, i.e. documents that are indexed with ontological terms and concepts instead of simple keywords, provide several advantages. First, the ontological abstraction provides robustness against changes in the document. In the above example, the document representation might change using the term Agricultural Agreement instead of Agreement on Agriculture . However, since the document has been annotated with the ontological semantics, this will not affect the search results. Second, since the ontology used for annotating the document in this example is domain-specific, the semantic meanings and interpretations of keywords are bound to that domain and therefore the retrieval is likely to be more efficient. A term can have several meanings in different domains. By first mapping the keyword to its semantic representation in a specific ontology and using the ontology s linked knowledge structure, a much more focused search approach can be taken. Third, document specific representations no longer affect the search. This is extremely important in the case of multilingual representations. Keywords of several languages are mapped to the same concept in an ontology and are therefore given the same meaning. Multilingual search portals can be established to produce the same results, no matter which language is used for retrieval. An important task in knowledge management facilitating above described search scenario id [...]

Computational Linguistics and Intelligent Text Processing

Download Computational Linguistics and Intelligent Text Processing PDF Online Free

Author :
Publisher : Springer
ISBN 13 : 3642286046
Total Pages : 639 pages
Book Rating : 4.6/5 (422 download)

DOWNLOAD NOW!


Book Synopsis Computational Linguistics and Intelligent Text Processing by : Alexander Gelbukh

Download or read book Computational Linguistics and Intelligent Text Processing written by Alexander Gelbukh and published by Springer. This book was released on 2012-03-06 with total page 639 pages. Available in PDF, EPUB and Kindle. Book excerpt: This two-volume set, consisting of LNCS 7181 and LNCS 7182, constitutes the thoroughly refereed proceedings of the 13th International Conference on Computer Linguistics and Intelligent Processing, held in New Delhi, India, in March 2012. The total of 92 full papers were carefully reviewed and selected for inclusion in the proceedings. The contents have been ordered according to the following topical sections: NLP system architecture; lexical resources; morphology and syntax; word sense disambiguation and named entity recognition; semantics and discourse; sentiment analysis, opinion mining, and emotions; natural language generation; machine translation and multilingualism; text categorization and clustering; information extraction and text mining; information retrieval and question answering; document summarization; and applications.

Knowledge Engineering and Knowledge Management

Download Knowledge Engineering and Knowledge Management PDF Online Free

Author :
Publisher : Springer
ISBN 13 : 3319586947
Total Pages : 296 pages
Book Rating : 4.3/5 (195 download)

DOWNLOAD NOW!


Book Synopsis Knowledge Engineering and Knowledge Management by : Paolo Ciancarini

Download or read book Knowledge Engineering and Knowledge Management written by Paolo Ciancarini and published by Springer. This book was released on 2017-05-17 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the best selected papers of two Satellite Events held at the 20th International Conference on Knowledge Engineering and Knowledge Management, EKAW 2016, in November 2016 in Bologna, Italy: The Second International Workshop on Educational Knowledge Management, EKM 2016, and the First Workshop: Detection, Representation and Management of Concept Drift in Linked Open Data, Drift-an-LOD 2016. The 6 revised full papers included in this volume were carefully reviewed and selected from the 13 full papers that were accepted for presentation at the conference from the initial 82 submissions. This volume also contains the 37 accepted contributions for the EKAW 2016 tutorials, demo and poster sessions, and the doctoral consortium. The special focus of this year's EKAW was "evolving knowledge", which concerns all aspects of the management and acquisition of knowledge representations of evolving, contextual, and local models. This includes change management, trend detection, model evolution, streaming data and stream reasoning, event processing, time-and space dependent models, contextual and local knowledge representations with a special emphasis on the evolvability and localization of knowledge and the correct usage of these limits.

Towards the Multilingual Semantic Web

Download Towards the Multilingual Semantic Web PDF Online Free

Author :
Publisher : Springer
ISBN 13 : 3662435853
Total Pages : 339 pages
Book Rating : 4.6/5 (624 download)

DOWNLOAD NOW!


Book Synopsis Towards the Multilingual Semantic Web by : Paul Buitelaar

Download or read book Towards the Multilingual Semantic Web written by Paul Buitelaar and published by Springer. This book was released on 2014-11-13 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: To date, the relation between multilingualism and the Semantic Web has not yet received enough attention in the research community. One major challenge for the Semantic Web community is to develop architectures, frameworks and systems that can help in overcoming national and language barriers, facilitating equal access to information produced in different cultures and languages. As such, this volume aims at documenting the state-of-the-art with regard to the vision of a Multilingual Semantic Web, in which semantic information will be accessible in and across multiple languages. The Multilingual Semantic Web as envisioned in this volume will support the following functionalities: (1) responding to information needs in any language with regard to semantically structured data available on the Semantic Web and Linked Open Data (LOD) cloud, (2) verbalizing and accessing semantically structured data, ontologies or other conceptualizations in multiple languages, (3) harmonizing, integrating, aggregating, comparing and repurposing semantically structured data across languages and (4) aligning and reconciling ontologies or other conceptualizations across languages. The volume is divided into three main sections: Principles, Methods and Applications. The section on “Principles” discusses models, architectures and methodologies that enrich the current Semantic Web architecture with features necessary to handle multiple languages. The section on “Methods” describes algorithms and approaches for solving key issues related to the construction of the Multilingual Semantic Web. The section on “Applications” describes the use of Multilingual Semantic Web based approaches in the context of several application domains. This volume is essential reading for all academic and industrial researchers who want to embark on this new research field at the intersection of various research topics, including the Semantic Web, Linked Data, natural language processing, computational linguistics, terminology and information retrieval. It will also be of great interest to practitioners who are interested in re-examining their existing infrastructure and methodologies for handling multiple languages in Web applications or information retrieval systems.

The Semantic Web: Semantics and Big Data

Download The Semantic Web: Semantics and Big Data PDF Online Free

Author :
Publisher : Springer
ISBN 13 : 3642382886
Total Pages : 753 pages
Book Rating : 4.6/5 (423 download)

DOWNLOAD NOW!


Book Synopsis The Semantic Web: Semantics and Big Data by : Philipp Cimiano

Download or read book The Semantic Web: Semantics and Big Data written by Philipp Cimiano and published by Springer. This book was released on 2013-05-20 with total page 753 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 10th Extended Semantic Web Conference, ESWC 2013, held in Montpellier, France, in May 2013. The 42 revised full papers presented together with three invited talks were carefully reviewed and selected from 162 submissions. They are organized in tracks on ontologies; linked open data; semantic data management; mobile Web, sensors and semantic streams; reasoning; natural language processing and information retrieval; machine learning; social Web and Web science; cognition and semantic Web; and in-use and industrial tracks. The book also includes 17 PhD papers presented at the PhD Symposium.

Modern Advances in Applied Intelligence

Download Modern Advances in Applied Intelligence PDF Online Free

Author :
Publisher : Springer
ISBN 13 : 3319074679
Total Pages : 543 pages
Book Rating : 4.3/5 (19 download)

DOWNLOAD NOW!


Book Synopsis Modern Advances in Applied Intelligence by : Moonis Ali

Download or read book Modern Advances in Applied Intelligence written by Moonis Ali and published by Springer. This book was released on 2014-05-20 with total page 543 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two volume set LNAI 8481 and 8482 constitutes the refereed conference proceedings of the 27th International Conference on Industrial, Engineering and Other Applications of Applied Intelligent Systems, IEA/AIE 2014, held in Kaohsiung, Taiwan, in June 2014. The total of 106 papers selected for the proceedings were carefully reviewed and selected from various submissions. The papers deal with a wide range of topics from applications of applied intelligent systems to solve real-life problems in all areas including engineering, science, industry, automation and robotics, business and finance, medicine and biomedicine, bioinformatics, cyberspace and human-machine interaction.

Knowledge Science, Engineering and Management

Download Knowledge Science, Engineering and Management PDF Online Free

Author :
Publisher : Springer
ISBN 13 : 3642397875
Total Pages : 615 pages
Book Rating : 4.6/5 (423 download)

DOWNLOAD NOW!


Book Synopsis Knowledge Science, Engineering and Management by : Mingzheng Wang

Download or read book Knowledge Science, Engineering and Management written by Mingzheng Wang and published by Springer. This book was released on 2013-07-03 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 6 th International Conference on Knowledge Science, Engineering and Management, KSEM 2013, held in Dalian City, China, in August 2013. The 50 revised papers (33 regular papers, 18 short papers, and keynote and invited talks) were carefully reviewed and selected from various submissions.

Artificial Intelligence: Methodology, Systems, and Applications

Download Artificial Intelligence: Methodology, Systems, and Applications PDF Online Free

Author :
Publisher : Springer
ISBN 13 : 3642331858
Total Pages : 346 pages
Book Rating : 4.6/5 (423 download)

DOWNLOAD NOW!


Book Synopsis Artificial Intelligence: Methodology, Systems, and Applications by : Allan Ramsay

Download or read book Artificial Intelligence: Methodology, Systems, and Applications written by Allan Ramsay and published by Springer. This book was released on 2012-08-29 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 15th International Conference on Artificial Intelligence: Methodology, Systems, and Applications, AIMSA 2012, held in Varna, Bulgaria in September 2012. The 36 revised full papers presented were carefully reviewed and selected from numerous submissions. The papers are organized in topical sections on natural language processing, social networks, knowledge representation and reasoning, machine learning, planning and agents, search, and computer vision.

Intelligent Tutoring Systems

Download Intelligent Tutoring Systems PDF Online Free

Author :
Publisher : Springer
ISBN 13 : 3319072218
Total Pages : 727 pages
Book Rating : 4.3/5 (19 download)

DOWNLOAD NOW!


Book Synopsis Intelligent Tutoring Systems by : Stefan Trausan-Matu

Download or read book Intelligent Tutoring Systems written by Stefan Trausan-Matu and published by Springer. This book was released on 2014-05-24 with total page 727 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 12th International Conference on Intelligent Tutoring Systems, ITS 2014, held in Honolulu, HI, USA, in June 2014. The 31 revised full papers, 45 short papers and 27 posters presented were carefully viewed and selected from 177 submissions. The specific theme of the ITS 2014 conference is "Creating fertile soil for learning interactions". Besides that, the highly interdisciplinary ITS conferences bring together researchers in computer science, learning sciences, cognitive and educational psychology, sociology, cognitive science, artificial intelligence, machine learning and linguistics. The papers are organized in topical sections on affect; multimodality and metacognition; collaborative learning; data mining and student behavior; dialogue and discourse; generating hints, scaffolds and questions; game-based learning and simulation; graphical representations and learning; student strategies and problem solving; scaling ITS and assessment.

LMF Lexical Markup Framework

Download LMF Lexical Markup Framework PDF Online Free

Author :
Publisher : John Wiley & Sons
ISBN 13 : 1118712595
Total Pages : 268 pages
Book Rating : 4.1/5 (187 download)

DOWNLOAD NOW!


Book Synopsis LMF Lexical Markup Framework by : Gil Francopoulo

Download or read book LMF Lexical Markup Framework written by Gil Francopoulo and published by John Wiley & Sons. This book was released on 2013-05-06 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: The community responsible for developing lexicons for Natural Language Processing (NLP) and Machine Readable Dictionaries (MRDs) started their ISO standardization activities in 2003. These activities resulted in the ISO standard – Lexical Markup Framework (LMF). After selecting and defining a common terminology, the LMF team had to identify the common notions shared by all lexicons in order to specify a common skeleton (called the core model) and understand the various requirements coming from different groups of users. The goals of LMF are to provide a common model for the creation and use of lexical resources, to manage the exchange of data between and among these resources, and to enable the merging of a large number of individual electronic resources to form extensive global electronic resources. The various types of individual instantiations of LMF can include monolingual, bilingual or multilingual lexical resources. The same specifications can be used for small and large lexicons, both simple and complex, as well as for both written and spoken lexical representations. The descriptions range from morphology, syntax and computational semantics to computer-assisted translation. The languages covered are not restricted to European languages, but apply to all natural languages. The LMF specification is now a success and numerous lexicon managers currently use LMF in different languages and contexts. This book starts with the historical context of LMF, before providing an overview of the LMF model and the Data Category Registry, which provides a flexible means for applying constants like /grammatical gender/ in a variety of different settings. It then presents concrete applications and experiments on real data, which are important for developers who want to learn about the use of LMF. Contents 1. LMF – Historical Context and Perspectives, Nicoletta Calzolari, Monica Monachini and Claudia Soria. 2. Model Description, Gil Francopoulo and Monte George. 3. LMF and the Data Category Registry: Principles and Application, Menzo Windhouwer and Sue Ellen Wright. 4. Wordnet-LMF: A Standard Representation for Multilingual Wordnets, Piek Vossen, Claudia Soria and Monica Monachini. 5. Prolmf: A Multilingual Dictionary of Proper Names and their Relations, Denis Maurel, Béatrice Bouchou-Markhoff. 6. LMF for Arabic, Aida Khemakhem, Bilel Gargouri, Kais Haddar and Abdelmajid Ben Hamadou. 7. LMF for a Selection of African Languages, Chantal Enguehard and Mathieu Mangeot. 8. LMF and its Implementation in Some Asian Languages, Takenobu Tokunaga, Sophia Y.M. Lee, Virach Sornlertlamvanich, Kiyoaki Shirai, Shu-Kai Hsieh and Chu-Ren Huang. 9. DUELME: Dutch Electronic Lexicon of Multiword Expressions, Jan Odijk. 10. UBY-LMF – Exploring the Boundaries of Language-Independent Lexicon Models, Judith Eckle-Kohler, Iryna Gurevych, Silvana Hartmann, Michael Matuschek and Christian M. Meyer. 11. Conversion of Lexicon-Grammar Tables to LMF: Application to French, Éric Laporte, Elsa Tolone and Matthieu Constant. 12. Collaborative Tools: From Wiktionary to LMF, for Synchronic and Diachronic Language Data, Thierry Declerck, Pirsoka Lendvai and Karlheinz Mörth. 13. LMF Experiments on Format Conversions for Resource Merging: Converters and Problems, Marta Villegas, Muntsa Padró and Núria Bel. 14. LMF as a Foundation for Servicized Lexical Resources, Yoshihiko Hayashi, Monica Monachini, Bora Savas, Claudia Soria and Nicoletta Calzolari. 15. Creating a Serialization of LMF: The Experience of the RELISH Project, Menzo Windhouwer, Justin Petro, Irina Nevskaya, Sebastian Drude, Helen Aristar-Dry and Jost Gippert. 16. Global Atlas: Proper Nouns, From Wikipedia to LMF, Gil Francopoulo, Frédéric Marcoul, David Causse and Grégory Piparo. 17. LMF in U.S. Government Language Resource Management, Monte George. About the Authors Gil Francopoulo works for Tagmatica (www.tagmatica.com), a company specializing in software development in the field of linguistics and documentation in the semantic web, in Paris, France, as well as for Spotter (www.spotter.com), a company specializing in media and social media analytics.

The Semantic Web -- ISWC 2012

Download The Semantic Web -- ISWC 2012 PDF Online Free

Author :
Publisher : Springer
ISBN 13 : 364235176X
Total Pages : 704 pages
Book Rating : 4.6/5 (423 download)

DOWNLOAD NOW!


Book Synopsis The Semantic Web -- ISWC 2012 by : Philippe Cudré-Mauroux

Download or read book The Semantic Web -- ISWC 2012 written by Philippe Cudré-Mauroux and published by Springer. This book was released on 2012-10-28 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two-volume set LNCS 7649 + 7650 constitutes the refereed proceedings of the 11th International Semantic Web Conference, ISWC 2012, held in Boston, MA, USA, in November 2012. The International Semantic Web Conference is the premier forum for Semantic Web research, where cutting edge scientific results and technological innovations are presented, where problems and solutions are discussed, and where the future of this vision is being developed. It brings together specialists in fields such as artificial intelligence, databases, social networks, distributed computing, Web engineering, information systems, human-computer interaction, natural language processing, and the social sciences. Volume 1 contains a total of 41 papers which were presented in the research track. They were carefully reviewed and selected from 186 submissions. Volume 2 contains 17 papers from the in-use track which were accepted from 77 submissions. In addition, it presents 8 contributions to the evaluations and experiments track and 7 long papers and 8 short papers of the doctoral consortium.

Ontology Learning from Text

Download Ontology Learning from Text PDF Online Free

Author :
Publisher : IOS Press
ISBN 13 : 9781586035235
Total Pages : 188 pages
Book Rating : 4.0/5 (352 download)

DOWNLOAD NOW!


Book Synopsis Ontology Learning from Text by : Paul Buitelaar

Download or read book Ontology Learning from Text written by Paul Buitelaar and published by IOS Press. This book was released on 2005 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: The latest title in Black Library's premium line. Perturabo - master of siegecraft, and executioner of Olympia. Long has he lived in the shadow of his more favoured primarch brothers, frustrated by the mundane and ignominious duties which regularly fall to his Legion. When Fulgrim offers him the chance to lead an expedition in search of an ancient and destructive xenos weapon, the Iron Warriors and the Emperor's Children unite and venture deep into the heart of the great warp-rift known only as 'the Eye'. Pursued by a ragged band of survivors from Isstvan V and the revenants of a dead eldar world, they must work quickly if they are to unleash the devastating power of the Angel Exterminatus