scispace - formally typeset
Journal ArticleDOI

On visual formalisms

David Harel
- 01 May 1988 - 
- Vol. 31, Iss: 5, pp 514-530
TLDR
The higraph, a general kind of diagramming object, forms a visual formalism of topological nature that is suited for a wide array of applications to databases, knowledge representation, and the behavioral specification of complex concurrent systems using the higraph-based language of statecharts.
Abstract
The higraph, a general kind of diagramming object, forms a visual formalism of topological nature. Higraphs are suited for a wide array of applications to databases, knowledge representation, and, most notably, the behavioral specification of complex concurrent systems using the higraph-based language of statecharts.

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Citations
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A Principled Approach To The Integration Of Human Factors And Systems Engineering For Interactive Control System Design

Chris Johnson
TL;DR: It is argued that principles provide a framework which helps to ensure that human factors and systems engineering are integrated at all stages of development, and that the principled approach advocated in this thesis is methodologically inadequate.
Proceedings Article

Using Hy + for network management and distributed debugging

TL;DR: This paper shows how the Hy+/GraphLog system can be used by network managers or distributed debuggers to meet their information manipulation and visualization goals and for debugging of distributed and parallel applications.
Journal ArticleDOI

The Mystery of Deduction and Diagrammatic Aspects of Representation

TL;DR: In this paper, the authors identify the mystery of deduction as surprise-effect and demonstration-difficulty, and compare symbolic and diagrammatic representation systems in terms of how they handle these aspects.
Journal ArticleDOI

Bridging the gap between artificial market simulations and qualitative research in diffusion of innovation

TL;DR: A novel method combining qualitative marketing research and software engineering techniques to synthesize simulation-ready theories of consumer behavior that is sufficiently precise and formal to be expressed in Unified Modeling Language (UML).
Dissertation

Efficient visual navigation of hierarchically structured graphs.

TL;DR: A new variant, dynamic leaves, is introduced, which is based on the dynamic graph variant, but additionally allows insertion and deletion of graph nodes, i.
References
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Book

Graph theory

Frank Harary
Book

Introduction to Automata Theory, Languages, and Computation

TL;DR: This book is a rigorous exposition of formal languages and models of computation, with an introduction to computational complexity, appropriate for upper-level computer science undergraduates who are comfortable with mathematical arguments.
Journal ArticleDOI

Communicating sequential processes

TL;DR: It is suggested that input and output are basic primitives of programming and that parallel composition of communicating sequential processes is a fundamental program structuring method.
Journal ArticleDOI

Statecharts: A visual formalism for complex systems

TL;DR: It is intended to demonstrate here that statecharts counter many of the objections raised against conventional state diagrams, and thus appear to render specification by diagrams an attractive and plausible approach.
Book

The entity-relationship model: toward a unified view of data

TL;DR: A data model, called the entity-relationship model, is proposed that incorporates some of the important semantic information about the real world and can be used as a basis for unification of different views of data: the network model, the relational model, and the entity set model.