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Foundational Extensible Corecursion -- A Proof Assistant Perspective

by Jasmin Christian Blanchette, Andrei Popescu, Dmitriy Traytel , 2015
"... This paper presents a formalized framework for defining corecursive functions safely in a total setting, based on corecursion up-to and relational parametricity. The end product is a general corecursor that allows corecursive (and even recursive) calls under “friendly” operations, including construc ..."
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constructors. Friendly corecursive functions can be registered as such, thereby increasing the corecursor’s expressiveness. The metatheory is formalized in the Isabelle proof assistant and forms the core of a prototype tool. The corecursor is derived from first principles, without requiring new axioms

Foundational Extensible Corecursion

by Jasmin Christian Blanchette , Andrei Popescu , Dmitriy Traytel , 2014
"... This paper presents a theoretical framework for defining corecur-sive functions safely in a total setting, based on corecursion up-to and relational parametricity. The end product is a general corecur-sor that allows corecursive (and even recursive) calls under well-behaved operations, including con ..."
Abstract - Cited by 1 (1 self) - Add to MetaCart
constructors. Corecursive functions that are well behaved can be registered as such, thereby increasing the corecursor’s expressiveness. To the extensible corecursor cor-responds an equally flexible coinduction principle. The metatheory is formalized in the Isabelle proof assistant and forms the core of a

Logical foundations of object-oriented and frame-based languages

by Michael Kifer, Georg Lausen, James Wu - JOURNAL OF THE ACM , 1995
"... We propose a novel formalism, called Frame Logic (abbr., F-logic), that accounts in a clean and declarative fashion for most of the structural aspects of object-oriented and frame-based languages. These features include object identity, complex objects, inheritance, polymorphic types, query methods, ..."
Abstract - Cited by 880 (64 self) - Add to MetaCart
, encapsulation, and others. In a sense, F-logic stands in the same relationship to the objectoriented paradigm as classical predicate calculus stands to relational programming. F-logic has a model-theoretic semantics and a sound and complete resolution-based proof theory. A small number of fundamental concepts

Letizia: An agent that assists web browsing

by Henry Lieberman - PROCEEDINGS OF THE FOURTEENTH INTERNATIONAL JOINT CONFERENCE ON ARTIFICIAL INTELLIGENCE (IJCAI-95 , 1995
"... ..."
Abstract - Cited by 658 (2 self) - Add to MetaCart
Abstract not found

Uniform proofs as a foundation for logic programming

by Dale Miller, Gopalan Nadathur , Frank Pfenning , Andre Scedrov - ANNALS OF PURE AND APPLIED LOGIC , 1991
"... A proof-theoretic characterization of logical languages that form suitable bases for Prolog-like programming languages is provided. This characterization is based on the principle that the declarative meaning of a logic program, provided by provability in a logical system, should coincide with its ..."
Abstract - Cited by 425 (124 self) - Add to MetaCart
A proof-theoretic characterization of logical languages that form suitable bases for Prolog-like programming languages is provided. This characterization is based on the principle that the declarative meaning of a logic program, provided by provability in a logical system, should coincide

The Foundation of a Generic Theorem Prover

by Lawrence C. Paulson - Journal of Automated Reasoning , 1989
"... Isabelle [28, 30] is an interactive theorem prover that supports a variety of logics. It represents rules as propositions (not as functions) and builds proofs by combining rules. These operations constitute a meta-logic (or `logical framework') in which the object-logics are formalized. Isabell ..."
Abstract - Cited by 471 (49 self) - Add to MetaCart
. Isabelle is now based on higher-order logic --- a precise and well-understood foundation. Examples illustrate use of this meta-logic to formalize logics and proofs. Axioms for first-order logic are shown sound and complete. Backwards proof is formalized by meta-reasoning about object-level entailment

Knowledge management and knowledge management systems: Conceptual foundations and an agenda . . .

by Maryam Alavi, Dorothy E. Leidner , 1998
"... ..."
Abstract - Cited by 823 (6 self) - Add to MetaCart
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A Framework for Defining Logics

by Robert Harper , Furio Honsell, Gordon Plotkin - JOURNAL OF THE ASSOCIATION FOR COMPUTING MACHINERY , 1993
"... The Edinburgh Logical Framework (LF) provides a means to define (or present) logics. It is based on a general treatment of syntax, rules, and proofs by means of a typed -calculus with dependent types. Syntax is treated in a style similar to, but more general than, Martin-Lof's system of ariti ..."
Abstract - Cited by 807 (45 self) - Add to MetaCart
The Edinburgh Logical Framework (LF) provides a means to define (or present) logics. It is based on a general treatment of syntax, rules, and proofs by means of a typed -calculus with dependent types. Syntax is treated in a style similar to, but more general than, Martin-Lof's system

An ecological perspective on health promotion programs

by Kenneth R. Mcleroy, Daniel Bibeau Phd, Allan Steckler Drph, Karen Glanz, Kenneth R. Mcleroy, Daniel Bibeau, Department Public Health - Health Education Quarterly , 1988
"... During the past 20 years there has been a dramatic increase in societal interest in preventing disability and death in the United States by changing individual behaviors linked to the risk of contracting chronic diseases. This renewed interest in health pro-motion and disease prevention has not been ..."
Abstract - Cited by 465 (1 self) - Add to MetaCart
During the past 20 years there has been a dramatic increase in societal interest in preventing disability and death in the United States by changing individual behaviors linked to the risk of contracting chronic diseases. This renewed interest in health pro-motion and disease prevention has

Modern Information Retrieval

by Ricardo Baeza-Yates, Berthier Ribeiro-Neto , 1999
"... Information retrieval (IR) has changed considerably in the last years with the expansion of the Web (World Wide Web) and the advent of modern and inexpensive graphical user interfaces and mass storage devices. As a result, traditional IR textbooks have become quite out-of-date which has led to the i ..."
Abstract - Cited by 3155 (28 self) - Add to MetaCart
to the introduction of new IR books recently. Nevertheless, we believe that there is still great need of a book that approaches the field in a rigorous and complete way from a computer-science perspective (in opposition to a user-centered perspective). This book is an effort to partially fulfill this gap and should
Results 1 - 10 of 375,262