竹村 彰通 Akimichi Takemura

Compurational results for (n,r)-Birkhoff model

Computational resources for the paper "Markov degree of Birkhoff model" by Yamaguchi, Ogawa and Takemura.

progroam for minimal unsafe sets

Updated source program for computing minimal k-unsafe and maximal k-safe sets is available here.

The algorithm is discussed in

A.Takemura. Minimum unsafe and maximum safe sets of variables for disclosure risk assessment of individual records in a microdata set, Journal of the Japan Statistical Society, 32, 107-117. 2002,

or in the preprint Calculating minimum k-unsafe and maximum k-safe sets of variables for disclosure risk assessment of individual records in microdata set
by Akimichi Takemura, ITME Discussion Paper No.6, January 1999

program for local recoding

Updated source programs (tar.gz archive file) for performing local recoding using Edmonds' algorithm of maximum weight matching is available here.

The procedure of local recoding is discussed in

A.Takemura. Local recoding and record swapping by maximum weight matching for disclosure control of microdata sets. Journal of Official Statistics, 18, 275-289. 2002.

or in the preprint Local recoding by maximum weight matching for disclosure control of microdata sets
by Akimichi Takemura, ITME Discussion Paper No.11, February 1999

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