In 2006 we developed ibm3m an R package for indirect block modeling of 3-mode data.

In november 2022 we started a more general approach to analysis of multiway networks. We developed a JSON format for description of multiway networks, collected some examples of multiway networks available on the WWW, and started development of the R package MWnets implementing methods for multiway network analysis. The advances in the development were reported at the Sredin seminar. The details on the analysis of the European airports are available on VladoWiki.

ibm3m - indirect block modeling of 3-mode data

The first version was developed in 2006 by Vladimir Batagelj, University of Ljubljana, Slovenia (Bled, July 15-17, 2006 and Ljubljana, July 18-21, 2006). The package was described in the paper

Batagelj, V., Ferligoj, A., Doreian, P.: Indirect Blockmodeling of 3-Way Networks. In: Selected Contributions in Data Analysis and Classification, Springer, 2007, pp.151-159.

The file ibm3m.R contains the following functions

• dist3m(a,t,d)

• rndMat3m(m,n,p=0.3)

• readDL3m(f,...)

• kin3m(fkin,tit,a,px,py,pz,rad=0.3)

• saveTriplets3m(f,a,head=TRUE,tit="ibm3m",lsep=":")

The file tests.R contains example blockmodelings (random, Krackard, Lazega).

The 3-mode networks can be prepared in

• UCINET DL matrix format; see the file krack.dat.
• as triplets: see files test.tri and triplet.dat.