Declarative Logic-Programming Components for Information Agents

Declarative Logic-Programming Components for Information Agents PDF Author: Michael Fink
Publisher: diplom.de
ISBN: 383246252X
Category : Computers
Languages : en
Pages : 335

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Book Description
Inhaltsangabe:Abstract: At present, the World Wide Web faces several problems regarding the search for specific in formation, arising, on the one hand, from the vast number of information sources available, and, on the other hand, from their intrinsic heterogeneity. A promising approach for solving the complex problems emerging in this context is the use of information agents in a multi-agent environment, which cooperatively solve advanced information-retrieval problems. An intelligent information agent provides advanced capabilities resorting to some form of logical reasoning, based on ad-hoc-knowledge about the task in question and on background knowledge of the domain, suitably represented in a knowledge base. In this thesis, our interest is in the role which some methods from the field of declarative logic programming can play in the realization of reasoning capabilities for intelligent information agents. We consider the task of updating extended logic programs (ELPs), since, in order to ensure adaptivity, an agent s knowledge base is subject to change. To this end, we develop update agents, which follow a declarative update policy and a reimplemented in the IMPACT agent environment. The proposed update agents adhere to a clear semantics and are able to deal with incomplete or in consistent information in an appropriate way. Furthermore, we introduce a framework for reasoning about evolving knowledgebases, which are represented as ELPs and maintained by an update policy. We describe a formal model which captures various update approaches, and define a logical language for expressing properties of evolving knowledge bases. We further investigate these mantical properties of knowledge states with respect to reasoning. In particular, we describe finitary characterizations of the knowledge evolution, and derive complexity results for our framework. Finally, we consider aparticular problem of information agents, namely information source selection, and develop an intelligent site-selection agent. We use ELPs for representing relevant knowledge and for declarative query an alysis and query abstraction. We define syntax and semantics of declarative site-selection programs, making use of advanced methods from answer set programming for priority handling and quantitative reasoning. A site selection component is implemented on top of the DLVKR system and its plp front-end for prioritized ELPs. We report experimental results for this implementation, [...]

Declarative Logic-Programming Components for Information Agents

Declarative Logic-Programming Components for Information Agents PDF Author: Michael Fink
Publisher: diplom.de
ISBN: 383246252X
Category : Computers
Languages : en
Pages : 335

Get Book Here

Book Description
Inhaltsangabe:Abstract: At present, the World Wide Web faces several problems regarding the search for specific in formation, arising, on the one hand, from the vast number of information sources available, and, on the other hand, from their intrinsic heterogeneity. A promising approach for solving the complex problems emerging in this context is the use of information agents in a multi-agent environment, which cooperatively solve advanced information-retrieval problems. An intelligent information agent provides advanced capabilities resorting to some form of logical reasoning, based on ad-hoc-knowledge about the task in question and on background knowledge of the domain, suitably represented in a knowledge base. In this thesis, our interest is in the role which some methods from the field of declarative logic programming can play in the realization of reasoning capabilities for intelligent information agents. We consider the task of updating extended logic programs (ELPs), since, in order to ensure adaptivity, an agent s knowledge base is subject to change. To this end, we develop update agents, which follow a declarative update policy and a reimplemented in the IMPACT agent environment. The proposed update agents adhere to a clear semantics and are able to deal with incomplete or in consistent information in an appropriate way. Furthermore, we introduce a framework for reasoning about evolving knowledgebases, which are represented as ELPs and maintained by an update policy. We describe a formal model which captures various update approaches, and define a logical language for expressing properties of evolving knowledge bases. We further investigate these mantical properties of knowledge states with respect to reasoning. In particular, we describe finitary characterizations of the knowledge evolution, and derive complexity results for our framework. Finally, we consider aparticular problem of information agents, namely information source selection, and develop an intelligent site-selection agent. We use ELPs for representing relevant knowledge and for declarative query an alysis and query abstraction. We define syntax and semantics of declarative site-selection programs, making use of advanced methods from answer set programming for priority handling and quantitative reasoning. A site selection component is implemented on top of the DLVKR system and its plp front-end for prioritized ELPs. We report experimental results for this implementation, [...]

Catalogue of the Library of Congress

Catalogue of the Library of Congress PDF Author: Library of Congress
Publisher:
ISBN:
Category : Library catalogs
Languages : en
Pages : 618

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Book Description


Figures of Authority

Figures of Authority PDF Author: Peter Becker
Publisher: Peter Lang
ISBN: 9789052014296
Category : History
Languages : en
Pages : 324

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Book Description
This book is about authority, more precisely, about figures of authority. The editors have put together an international group of renowned scholars to discuss the emergence of modern notions of authority from different angles. Modern authority is no longer legitimated by status and social position, but rather by institutional affiliation and performance. To research the genealogy and intricacies of this kind of authority, the chapters in this volume cast a closer look at the various institutional actors on whom authority has been bestowed. The authors use a case study approach to look at the instances in which modern authority emerged, was ridiculed, contested, or even failed. Taken together, the individual contributions shed new light on the intricate relationship between the subjects and their organisations; they challenge any Whig historiography of rationalisation and modernisation, and they help us to rethink the inter-relationship between modern and even postmodern institutional arrangements on the one hand, and their subjects on the other.

Royals on tour

Royals on tour PDF Author: Robert Aldrich
Publisher: Manchester University Press
ISBN: 1526109409
Category : History
Languages : en
Pages : 395

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Book Description
Royals on Tour explores visits by European monarchs and princes to colonies, and by indigenous royals to Europe in the 1800s and early 1900s with case studies of travel by royals from Britain, France, Portugal, Germany, Italy, the Netherlands, Belgium, Japan, the Dutch East Indies and French Indochina. Such tours projected imperial dominion and asserted the status of non-European dynasties. The celebrity of royals, the increased facility of travel, and the interest of public and press made tours key encounters between Europeans and non-Europeans. The reception visitors received illustrate the dynamics of empire and international relations. Ceremonies, speeches and meetings formed part of the popular culture of empire and monarchy. Mixed in with pageantry and protocol were profound questions about the role of monarchs, imperial governance, relationships between metropolitan and overseas elites, and evolving expressions of nationalism.

The Kaiser and the Colonies

The Kaiser and the Colonies PDF Author: Matthew P. Fitzpatrick
Publisher: Oxford University Press
ISBN: 0192651218
Category : History
Languages : en
Pages : 568

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Book Description
Many have viewed Kaiser Wilhelm II as having personally ruled Germany, dominating its politics, and choreographing its ambitious leap to global power. But how accurate is this picture? As The Kaiser and the Colonies shows, Wilhelm II was a constitutional monarch like many other crowned heads of Europe. Rather than an expression of Wilhelm II's personal rule, Germany's global empire and its Weltpolitik had their origins in the political and economic changes undergone by the nation as German commerce and industry strained to globalise alongside other European nations. More central to Germany's imperial processes than an emperor who reigned but did not rule were the numerous monarchs around the world with whom the German Empire came into contact. In Africa, Asia, and the Pacific, kings, sultans and other paramount leaders both resisted and accommodated Germany's ambitions as they charted their own course through the era of European imperialism. The result was often violent suppression, but also complex diplomatic negotiation, attempts at manipulation, and even mutual cooperation. In vivid detail drawn from archival holdings, The Kaiser and the Colonies examines the surprisingly muted role played by Wilhelm II in the German Empire and contrasts it to the lively, varied, and innovative responses to German imperialism from monarchs around the world.

Dictionary of Latin and Greek Theological Terms

Dictionary of Latin and Greek Theological Terms PDF Author: Richard A. Muller
Publisher: Baker Academic
ISBN: 1493412086
Category : Religion
Languages : en
Pages : 467

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Book Description
This indispensable companion to key post-Reformation theological texts provides clear and concise definitions of Latin and Greek terms for students at a variety of levels. Written by a leading scholar of the Reformation and post-Reformation eras, this volume offers definitions that bear the mark of expert judgment and precision. The second edition includes new material and has been updated and revised throughout.

Computer-Aided Design of User Interfaces IV

Computer-Aided Design of User Interfaces IV PDF Author: Robert J.K. Jacob
Publisher: Springer Science & Business Media
ISBN: 9781402031458
Category : Computers
Languages : en
Pages : 390

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Book Description
It also addresses User Interface Description Languages.

Namibia Under German Rule

Namibia Under German Rule PDF Author: Helmut Bley
Publisher: LIT Verlag Münster
ISBN: 9783894732257
Category : History
Languages : en
Pages : 360

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Book Description
This is the first paperback edition of a book which originally appeared under the title "South-West Africa Under German Rule", and appears with a new introduction by the author. The history of Namibia offers many parallels to developments in other European colonies. The settlers, with a greater or lesser use of force, established themselves in the country and their confrontation with the African population often culminated in rebellion in the area of major settlement; a European settler community would then consolidate itself over the ruins left by military conquest. The pattern was repeated in Namibia during the Nama and Herero wars. Helmut Bley shows how the roots of German totalitarianism stem from the colonial period. He provides a picture of how social insecurity, bureaucracy and rigid economic thinking produced the racialism and the extremism of the last years of German rule. The abuse of the Africans provided the roots of the abuse of the Jews.

The Pastoral Letters as Composite Documents

The Pastoral Letters as Composite Documents PDF Author: James D. Miller
Publisher: Cambridge University Press
ISBN: 9780521560481
Category : Religion
Languages : en
Pages : 230

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Book Description
The authorship of the Pastoral letters has been a matter of intense scholarly debate for almost two hundred years. The letters clearly purport to be written by Paul, but perceived differences in the literary style, vocabulary and theology of the Pastorals when compared with that of the genuine Pauline letters suggests that this was not so. The arguments have centred primarily on the question of whether Paul or a disciple of Paul - a gifted pseudonymist - composed these letters. It is the 'either/or' nature of the debate that is brought into serious question in this book. Dr Miller argues that the Pastorals reflect a compositional history that was commonplace throughout the ancient Near East. He takes the reader on a wide-ranging tour of biblical and extra-biblical sources, examining their literary histories, and arguing that the Pastorals are composite documents, not unlike many Jewish and early Christian works.

Paul the Letter-Writer and the Second Letter to Timothy

Paul the Letter-Writer and the Second Letter to Timothy PDF Author: Michael Prior
Publisher: Bloomsbury Publishing
ISBN: 056718062X
Category : Religion
Languages : en
Pages : 305

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Book Description
This study argues for new perspectives on the letters of Paul, especially the Second Letter to Timothy. It examines striking aspects of Paul's letters, especially the fact that many of them are co-authored, that six of them acknowledge that a secretary has penned the letter, and that 1 Timothy, 2 Timothy and Titus are the only ones addressed to individuals. It investigates the implications of these facts for the concept of Pauline authorship. Prior maintains that the received arguments, statistical as well as literary, which exclude 2 Timothy from the influence of Paul, are less than convincing. The author suggests an original reading of 2 Timothy arguing it was composed by Paul towards the end of his first Roman imprisonment. Contrary to all interpretations of the letter which argue that Paul was about to be martyred, Prior claims that Paul was confident that he would be released, and was assembling a mission team to bring his proclamation of the Gospel to a completion. Timothy's courage and missionary zeal needed rekindling, for he and Mark were to be key figures in this new team.