CALCOLO

, Volume 5, Supplement 1, pp 218–236 | Cite as

Algoritmi per la soluzione di problemi di assegnazione

  • C. Böhm
  • L. Santucci
Parte III Memorie Presentate Nelle Quindici Sessioni del Congresso (Dalla Lettera A Alla J)
  • 17 Downloads

Simbologia

A, B

aik∥, ∥bik∥ (i = 1, ..., n;k = 1, ...,m)

AB

aikbik

G, H

matrici di permutazione rispettivamente di ordinen, m

g, h

corrispondenti funzioni di permutazione degli indici

\(A\mathop {\underline \angle }\limits_P B\)

(EG) (EH) (GAH≤B)

X·Y

xikyik

rik, st

r(i−1)m + k. (s−1)m +t∥ (i, s = 1, ...,n, k, t = 1, ...,m)

\(\left\| {r_{i\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{k} , s\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{t} } } \right\|\)

sottomatrice di ∥rik, st∥ ottenuta fissando\(k = \underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{k} , t = \underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{t}\) (i, s=1, ...,n)

\(\left\| {r_{\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{i} k, \underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{s} t} } \right\|\)

« » « ottenuta fissando\(i = \underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{i} , s = \underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{s}\) (k, t = 1, ...,m)

X ∈ ℋn

(EG) (G≤X)

Y ∈ ℋm

(EH) (H≤Y)

Summary

An iterative algorithm is proposed to reduce in mast cases the number of permutations necessary for finding possibly solution of the multiple assignement problem for the rows at same time for the columns of two matrices.

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Bibliografia

  1. [1]
    A quasi-Decision algorithm for the P-equivalence of two matrices.Corrado Böhm and Adelina Santolini. ICC. vol. 3, n. 1, 1964.Google Scholar
  2. [2]
    Some aspects of Analysis and Probability.-Kaplansky, Hewitt, Hall, Fortet. Volume IVSurveys in Applied Mathematics: John Wiley and Sons, Inc., Publishers.Google Scholar
  3. [3]
    On representatives of subsets. Ph. Hall-j. London Math. Soc., 10, 26–30 (1935).Google Scholar
  4. [4]
    Gotusso, L, Tarsi Santolini A.: A FORTRAN IVquasi-decision algorithm for the P-equivalence of two matrices. Calcolo, vol. V, Fas. I 1968.Google Scholar

Copyright information

© IAC 1968

Authors and Affiliations

  • C. Böhm
    • 1
  • L. Santucci
    • 1
  1. 1.Istituto per le Applicazioni del Calcolo (IAC)-CNRRoma

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