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pro vyhledávání: '"R.N. Horspool"'
Autor:
R.N. Horspool
This state-of-the-art book aims to address problems and solutions in implementing complex and high quality systems past the year 2000. In particular, it focuses on the development of languages, methods and tools and their further evaluation. Among th
Autor:
Gordon V. Cormack, R.N. Horspool
Publikováno v:
Data Compression Conference
Text compression algorithms are normally defined in terms of a source alphabet Sigma of 8-bit ASCII codes. The authors consider choosing Sigma to be an alphabet whose symbols are the words of English or, in general, alternate maximal strings of alpha
Autor:
J. Vitek, R.N. Horspool
Publikováno v:
ICCL
It is pointed out that stack-based languages, such as PostScript, present a major challenge to static analysis techniques because of their almost unlimited polymorphism. A regular expression notation that is used to represent allowed combinations of
Autor:
W.J. Windels, R.N. Horspool
Publikováno v:
CBMS
Two highly effective families of lossless compression methods were created by Ziv and Lempel (1977). However, these methods are normally ineffective when applied to digitized signals. We have successfully adapted the LZ77 method to take advantage of
Autor:
R.N. Horspool
Publikováno v:
[1991] Proceedings. Data Compression Conference.
The Lempel-Ziv-Welch compression algorithm is widely used because it achieves an excellent compromise between compression performance and speed of execution. A simple way to improve the compression without significantly degrading its speed is propose
Autor:
R.N. Horspool, H.C. Ho
Publikováno v:
Proceedings of the Eighth Israeli Conference on Computer Systems and Software Engineering.
Partial redundancy elimination has become a major compiler optimization that subsumes various ad hoc code motion optimizations. However, partial redundancy elimination is extremely conservative, failing to take advantage of many opportunities for opt
Autor:
R.N. Horspool, B. Koehler
Publikováno v:
IEEE Pacific Rim Conference on Communications, Computers, and Signal Processing. Proceedings.
Breaking the source text of a contemporary C program into separate compilation units and employing aggressive selective compilation schemes can greatly reduce the amount of time spent compiling programs. However, much redundant processing still occur
Autor:
R.N. Horspool
Publikováno v:
Data Compression Conference
Most practical compression methods in the LZ77 and LZ78 families parse their input using a greedy heuristic. However the popular gzip compression program demonstrates that modest but significant gains in compression performance are possible if non-gr
Publikováno v:
Proceedings of International Workshop on Object Orientation in Operating Systems.
This paper proposes the unification of active and passive objects in object-oriented operating systems. With such a unification, programmers can concentrate on programming an algorithm without having to consider how objects are used and executed. Als
Autor:
R.N. Horspool, C. Escalante
Publikováno v:
IEEE Pacific Rim Conference on Communications, Computers, and Signal Processing. Proceedings.
The efficiency of query execution in a logic program depends very strongly on the order in which subgoals are evaluated. If a suitable evaluation order is chosen, the number of alternatives to be explored is reduced, and the overall efficiency may be