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## [igraph] link analysis with R

**From**: |
Djamila MHB |

**Subject**: |
[igraph] link analysis with R |

**Date**: |
Sun, 7 Sep 2014 12:16:37 +0200 |

Hello
1) I have tried to apply HITS algorithm following this R manual
http://www.csc.ncsu.edu/faculty/samatova/practical-graph-mining-with-R/slides/pdf/Link_Analysis.pdf
but I cannot find the libraries: “Link Analysis “and
“ProximityMeasure” in CRAN project website:
>* library(igraph)*
>* library(ProximityMeasure)*
Error in library(ProximityMeasure) :
there is no package called ‘ProximityMeasure’
>* A<-matrix(c(0,1,1,0,0,0,1,0,1,1,1,1,0,1,0,0,0,0,0,0,1,0,1,0,0,1,1,0,0,0,0,0,1,0,0,0),nrow=6,ncol=6,byrow=TRUE)*
>* G<-graph.adjacency(A,mode=c("directed"),weighted=NULL)*
>* kmax<-6*
>* op<-HITS(G,kmax)*
Error: could not find function "HITS"
>* op*
Error: object 'op' not found
2) I have also tried to apply PageRank algorithm in collaboration
networks “astro-ph.gml” but it has not worked:
>* astrogr<-read.graph("F:/DataMiningavecR/astro-ph.gml","gml")*
>* astrogr_sub<-delete.vertices(astrogr,V(astrogr)$id[V(astrogr)$id>100])*
>*page.rank *
>*(astrogr_sub,V(astrogr_sub),directed=FALSE,weights=E(astrogr_sub)$value)$vector*
Error in match.arg(arg = arg, choices = choices, several.ok = several.ok) :
'arg' must be of length 1
3) There also problems when I have tried to apply a pre-processing for
the graph data of “astro-ph.gml” for link prediction:
rawdataframe<-read.table("F:/DataMiningavecR/astro-ph.gml",sep="",fill=TRUE)
>* begin_year<-min(rawdataframe$V3)*
Warning message:
In min(rawdataframe$V3) : no non-missing arguments to min; returning Inf
>* end_year<-max(rawdataframe$V3)*
Warning message:
In max(rawdataframe$V3) : no non-missing arguments to max; returning –Inf
Please, could you show me where is the problem?

**[igraph] link analysis with R**,
*Djamila MHB* **<=**