This book constitutes the refereed proceedings of the 16th International Conference on Practice and theory in Public-Key Cryptography, PKC 2013, held in Nara, Japan, in February/March 2013.;The 28 papers presented tog...
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ISBN:
(数字)9783642363627
ISBN:
(纸本)9783642363610
This book constitutes the refereed proceedings of the 16th International Conference on Practice and theory in Public-Key Cryptography, PKC 2013, held in Nara, Japan, in February/March 2013.;The 28 papers presented together with 2 invited talks were carefully reviewed and selected from numerous submissions. The papers are organized in the following topical sections: homomorphic encryption, primitives, functional encryption/signatures, RSA, IBE and IPE, key exchange, signature schemes, encryption, and protocols.
1.1 Gegenstand der informations-und Kodierungstheorie Die informations-und Kodierungstheorie [information and codingtheory) ge hört zum theoretischen Fundament der Informatik. Sie dient der formalen Be...
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ISBN:
(数字)9783663103479
1.1 Gegenstand der informations-und Kodierungstheorie Die informations-und Kodierungstheorie [information and codingtheory) ge hört zum theoretischen Fundament der Informatik. Sie dient der formalen Be schreibung, der Analyse und Bewertung informationeHer Prozesse (wie Erzeu gung, Übertragung und Speicherung von informationen) in unterschiedlichen Anwendungsbereichen. Bemerkenswert dabei ist, daß die information in diesen Prozessen immer nur in kodierter Form erscheint, womit bereits auf den engen Zusammenhang zwischen information und Kodierung hingewiesen werden soll. Die Entstehung der informationstheorie und der Kodierungstheorie fällt des halb nicht zufällig in die gleiche Zeit, die mit den grundlegenden Arbeiten von C. E. SHANNON [SHA 48) und R. W. HAMMING [HAM 50) datiert werden kann. In der Folgezeit haben sich beide Theorien dann jedoch weitgehend selb ständig entwickelt. Obwohl die informationstheorie, historisch gesehen, aus den Bedürfnissen der Nachrichtenübertragung entstand, fand sie nach dem Erscheinen der Arbeit von SHANNON eine rasche Verbreitung in vielen Anwendungsbereichen. Da bei wurden aber auch bald ihre Grenzen erkannt, die darin bestehen, daß die informationstheorie nur eine spezifische Seite der information, nämlich ihren statistischen Aspekt, erfaßt, der sich auf die wahrscheinlichkeitstheoretische Verteilung der informationstragenden Elemente (z.B. Zeichen) bezieht. Man sagt deshalb auch zu Recht "Statistische informationstheorie" oder ,,SHAN N 0 N sehe informationstheorie". Für die Einbeziehung des semantischen Aspekts (Bedeutung der information) und des pragmatischen Aspekts (Nutzen für den lnformationsempfänger) ist bisher noch keine gleichwertige und allgemeingültige Lösung gefunden worden.
In this book, H. S. Green, a former student of Max Born and well known as an author in physics and in philosophy of science, presents an individual and modern approach to theoretical physics and related fundamental pr...
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ISBN:
(数字)9783642571626
ISBN:
(纸本)9783540665175;9783642630613
In this book, H. S. Green, a former student of Max Born and well known as an author in physics and in philosophy of science, presents an individual and modern approach to theoretical physics and related fundamental problems. Starting from first principles, the links between physics and information science are unveiled step by step: modern informationtheory and the classical theory of the Turing machine are combined to create a new interpretation of quantum computability, which is then applied to field theory, gravitation and submicroscopic measurement theory and culminates in a detailed examination of the role of the conscious observer in physical measurements. The result is a highly readable book that unifies a wide range of scientific knowledge and is essential reading for all scientists and philosophers of science interested in the interpretation and the implications of the interaction between information science and basic physical theories.
This Open Access Book explores how classical informationtheory’s focus on syntactic information has limited the further development of communication science. Recently, communication technologies that handle and tran...
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ISBN:
(数字)9789819651320
ISBN:
(纸本)9789819651313
This Open Access Book explores how c
lassical informationtheory’s focus on syntactic information has limited the further development of communication science. Recently, communication technologies that handle and transmit semantic information have gained widespread attention in academia. Semantic communication has paved new directions for the future of communication technology development, yet it lacks a general mathematical guiding theory. To address this challenge, th
is open access
book constructs a theoretical framework for semantic informationtheory and provides a systematic exposition of the measurement system for semantic information and the theoretical limits of semantic communication. It serves as a professional reference for researchers in information and communication. The book begins by deeply analyzing the data characteristics of various information sources and the needs of downstream tasks to summarize and generalize the universal attribute of semantic information—synonym
ity and to
define the synonymous mapping between semantic information and syntactic information. Stemming from this core concept, synonymous mapping,
this book
introduces the measures of semantic information
.
It then introduces a new mathematical tool, S
ynonymous
Asymptotic Equipartition (AEP), to explore the mathematical properties of synonymous typical sequences and applies random coding and synonymous typical sequence decoding/encoding to prove the semantic lossless source coding theorem, semantic channel coding theorem, and semantic limited distortion source coding theorem. In addition, the semantic information measures in the continuous case
are discussed and
a new channel capacity formula
of
the band-limited Gaussian channel
is
obtain
ed,
which
is an important extension of the classical channel capacity
.
The book is a valuable resource for researchers, academics, and professionals in the field of information and communication, particularly those interested in advancing the f
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