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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Journal ArticleDOI

Syntax highlighting in business process models

TL;DR: This work formalizes a concept for syntax highlighting in workflow nets and presents a prototypical implementation with the WoPeD modeling tool, and reports on the results of an experiment that tests the hypothetical benefits of highlighting for comprehension.
Journal ArticleDOI

Improving medical protocols by formal methods

TL;DR: The results have been evaluated by a panel of medical experts, who judged that the problems detected in the protocols with the help of formal methods were serious and should be avoided.
Proceedings ArticleDOI

On integrating visualization techniques for effective software exploration

TL;DR: The SHriMP visualization technique for seamlessly exploring software structure and browsing source code, with a focus on effectively assisting hybrid program comprehension strategies, is described.
Proceedings ArticleDOI

On object state testing

TL;DR: An object state test model is described and a reverse engineering method for extracting object state behaviors from C++ source code is outlined that resembles the concepts of inheritance and aggregation in the object-oriented paradigm rather than the concept of state decomposition as in some existing models.
Journal ArticleDOI

A method for design and performance modeling of client/server systems

TL;DR: The paper advocates the need to integrate both design and performance modeling activities so that one can help the other in the design of a fairly large and complex client/server application.
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.