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78 lines
2.2 KiB
78 lines
2.2 KiB
.\" generated with Ronn/v0.7.3
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.\" http://github.com/rtomayko/ronn/tree/0.7.3
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.
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.TH "ER_A" "1" "September 2017" "www.complex-networks.net" "www.complex-networks.net"
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.
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.SH "NAME"
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\fBer_A\fR \- Sample a random graph from the Erdos\-Renyi model A
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.
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.SH "SYNOPSIS"
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\fBer_A\fR \fIN\fR \fIK\fR [\fIfileout\fR]
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.
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.SH "DESCRIPTION"
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\fBer_A\fR samples a random graph with \fIN\fR nodes and \fIK\fR edges from the Erdos\-Renyi model A, i\.e\. the ensemble of random graphs where K links are placed uniformly at random among N nodes\. The program dumps the edge list of the resulting graph on output\. If the optional \fIfileout\fR is provided, the output is written on a file with that name\.
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.
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.SH "PARAMETERS"
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.
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.TP
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\fIN\fR
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Number of nodes in the final graph\.
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.
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.TP
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\fIK\fR
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Number of edges in the final graph\.
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.
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.TP
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\fIfileout\fR
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The (optional) name of the filename where the edge list of the graph will be saved\.
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.
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.SH "EXAMPLES"
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The following command:
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.
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.IP "" 4
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.
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.nf
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$ er_A 1000 3000
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.
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.fi
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.IP "" 0
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.
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.P
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samples an undirected random network with \fIN=1000\fR nodes and \fIK=3000\fR edges using the Erdos\-Renyi model A\. The output of the command \fBer_A\fR will be the edge\-list of the resulting graph, where each (undirected) edge is reported only once\. In order to be useful, such edge\-list should be saved into a file\. The following command:
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.
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.IP "" 4
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.
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.nf
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$ er_A 1000 3000 > er_A_1000_3000\.net
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.
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.fi
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.IP "" 0
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.
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.P
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will save the resulting graph in the file er_A_1000_3000\.net\. Notice the usage of the symbol ">" to redirect the output of the program to a file\.
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.
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.SH "SEE ALSO"
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er_B(1), ws(1)
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.
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.SH "REFERENCES"
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.
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.IP "\(bu" 4
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P\. Erdos, & A\. Rényi, "On Random Graphs I", Publ\. Math\. Debrecen, 6, 290 (1959)
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.
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.IP "\(bu" 4
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P\.Erdos, & A\. Renyi, "On the evolution of random graphs" Publ\. Math\. Inst\. Hungary\. Acad\. Sci\., 5, 17\-61 (1960)
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.
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.IP "\(bu" 4
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V\. Latora, V\. Nicosia, G\. Russo, "Complex Networks: Principles, Methods and Applications", Chapter 3, Cambridge University Press (2017)
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.
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.IP "\(bu" 4
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V\. Latora, V\. Nicosia, G\. Russo, "Complex Networks: Principles, Methods and Applications", Appendix 10, Cambridge University Press (2017)
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.
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.IP "" 0
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.
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.SH "AUTHORS"
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(c) Vincenzo \'KatolaZ\' Nicosia 2009\-2017 \fB<v\.nicosia@qmul\.ac\.uk>\fR\.
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