Article

Free access

Indexing and merging in APL

Authors:

J. A. Gerth,

D. L. OrthAuthors Info & Claims

APL '88: Proceedings of the international conference on APL

Pages 156 - 161

https://doi.org/10.1145/55626.55646

Published: 01 December 1987 Publication History

PDF eReader

Abstract

Mathematically, an array may be usefully viewed as a function, in this particular case, as a function of its indices. A proposal is made for an operator which derives such a function for its array operand.

The proposal is discussed in the context of a review of indexing constructs in various APL systems.

References

[1]

Brown, J.A.,"A Generalization of APL" Doctoral Thesis, Dept. of Systems and information Sciences, Syracuse University, NY 1971

Google Scholar

[2]

Falkoff. AD. "SemiColonBracket Notation: A Hidden' Resource in APL" APL82 - API, Quote- Quad, Vol 13 No 1, ACM, NY 1982

Digital Library

Google Scholar

[3]

Ghandour, Z.J. and Mezei, J., "Generalized Arrays, Operators and Functions" IBM Journal of R&D, Volum 17 No 4, 1973

Google Scholar

[4]

IIui, Roger,"Some Uses of { and }" APL87 - APL Quote-Quad, Vol 17 No 4, ACM, NY 1987

Google Scholar

[5]

"APL2 Language Manual", Program Number 5798-DJP, Manual SB21-3015, IBM Corp., 1982

Google Scholar

[6]

"APL2 Programming: Language Reference", Program Number 5668-899, Manual S1120-9227, IBM Corp., 1984, 1985

Google Scholar

[7]

Iverson, K.E.,"Operators and Functions", Research Report #7091, IBM Corp., 1978

Google Scholar

[8]

Iverson, K.E.,"Rationalized APL" I.P. Sharp Research Report Number 1, Revision 1, II'. Sharp Associates Limited, Toronto 1983

Google Scholar

[9]

Iverson, K.E.,"A Dictionary of API," I.P. Sharp Associates Limited, Toronto 1986

Google Scholar

[10]

Pesch, R.II.,"Indexing and Indexed Replacement in APL" APL81 - APL Quote-Quad, Vol 12 No 1, ACM, NY 1981

Digital Library

Google Scholar

[11]

Ruehr, K.F.,"A Survey of Extensions to APL" APL82 - APL Quote-Quad, Vol 13 No 1, ACM, NY 1982

Digital Library

Google Scholar

[12]

Schwartz, J. and Dunford N., "Pure and Applied Mathematics" Vol VII Linear Operators - Part 1, p.3 Interscience Publishers, Inc. NY 1958

Google Scholar

Cited By

View all

Maier DVance BBeeri C(1993)A call to orderProceedings of the twelfth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems10.1145/153850.153851(1-16)Online publication date: 1-Aug-1993
https://dl.acm.org/doi/10.1145/153850.153851
Willhoft R(1991)Comparison of the functional power of APL2 and FORTRAN 90ACM SIGAPL APL Quote Quad10.1145/114055.11409421:4(343-357)Online publication date: 1-Jul-1991
https://dl.acm.org/doi/10.1145/114055.114094
Willhoft RSchulz C(1991)Comparison of the functional power of APL2 and FORTRAN 90Proceedings of the international conference on APL '9110.1145/114054.114094(343-357)Online publication date: 1-Jul-1991
https://dl.acm.org/doi/10.1145/114054.114094
Show More Cited By

Index Terms

Indexing and merging in APL
1. Information systems
  1. Information retrieval
    1. Document representation
    2. Search engine architectures and scalability
      1. Search engine indexing
  2. Information storage systems
    1. Record storage systems
2. Software and its engineering
  1. Software notations and tools
    1. General programming languages
      1. Language types

Recommendations

Indexing and merging in APL

Mathematically, an array may be usefully viewed as a function, in this particular case, as a function of its indices. A proposal is made for an operator which derives such a function for its array operand.

The proposal is discussed in the context of a ...
A new array indexing system for APL
APL '75: Proceedings of seventh international conference on APL

The indexing or subscription function in APL has long been recognised as being anomalous. Furthermore its inconsistencies can give rise to ill-defined situations. A system of new and extended functions is proposed that could provide a more consistent ...
The hyperdyadic index and generalized indexing and query with PIQUE
SSDBM '15: Proceedings of the 27th International Conference on Scientific and Statistical Database Management

Many scientists rely on indexing and query to identify trends and anomalies within extreme-scale scientific data. Compressed bitmap indexing (e.g., FastBit) is the go-to indexing method for many scientific datasets and query workloads. Recently, the ...

Comments

Information & Contributors

Information

Published In

APL '88: Proceedings of the international conference on APL

December 1987

349 pages

ISBN:0897912535

DOI:10.1145/55626

Editors:
L. J. Dickey,
L. C. Shaw

ACM SIGAPL APL Quote Quad Volume 18, Issue 2
Dec. 1987
340 pages
ISSN:0163-6006
DOI:10.1145/377719
Editors:
Leroy J. Dickey,
Lynne C. Shaw
Issue’s Table of Contents

Publisher

Association for Computing Machinery

New York, NY, United States

Publication History

Published: 01 December 1987

Permissions

Request permissions for this article.

Request Permissions

Check for updates

Qualifiers

Article

Contributors

Other Metrics

View Article Metrics

Bibliometrics & Citations

Bibliometrics

Article Metrics

4
Total Citations
View Citations
351
Total Downloads

Downloads (Last 12 months)74
Downloads (Last 6 weeks)13

Reflects downloads up to 17 Oct 2024

Other Metrics

View Author Metrics

Citations

Cited By

View all

Maier DVance BBeeri C(1993)A call to orderProceedings of the twelfth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems10.1145/153850.153851(1-16)Online publication date: 1-Aug-1993
https://dl.acm.org/doi/10.1145/153850.153851
Willhoft R(1991)Comparison of the functional power of APL2 and FORTRAN 90ACM SIGAPL APL Quote Quad10.1145/114055.11409421:4(343-357)Online publication date: 1-Jul-1991
https://dl.acm.org/doi/10.1145/114055.114094
Willhoft RSchulz C(1991)Comparison of the functional power of APL2 and FORTRAN 90Proceedings of the international conference on APL '9110.1145/114054.114094(343-357)Online publication date: 1-Jul-1991
https://dl.acm.org/doi/10.1145/114054.114094
Neidinger R(1992)An efficient method for the numerical evaluation of partial derivatives of arbitrary orderACM Transactions on Mathematical Software10.1145/146847.14692418:2(159-173)Online publication date: 1-Jun-1992
https://dl.acm.org/doi/10.1145/146847.146924

View Options

View options

PDF

View or Download as a PDF file.

PDF

eReader

View online with eReader.

eReader

Get Access

Login options

Check if you have access through your login credentials or your institution to get full access on this article.

Cited By

Index Terms

Recommendations

Indexing and merging in APL

A new array indexing system for APL

The hyperdyadic index and generalized indexing and query with PIQUE