Political blog

A pre-processed version of the Political Blog dataset from Olhede and Wolfe (2014), based on the original data by Adamic and Glance (2005). The provided igraph object represents the graph after removing zero-degree nodes and simplifying the graph structure. The graph is derived from the edge list polblog_edgelist.

Usage

data(polblog)

Format

polblog is an igraph object, which is pre-processed data symmetrize and simplified without self-loops.

Details

The adjancency matrix from polblog_edgelist is sparse, assymetric, so it needs to be symmetrized if a method requires a symmetric matrix. Nodes with zero degree need to be removed. All edges are considered as undirected edges. Then, we get the undirected version of dataset as polblog.

First 586 blogs are liberal; remaining 638 are conservative.

Source

http://www-personal.umich.edu/~mejn/netdata/

https://github.com/p-wolfe/network-histogram-code

References

Adamic, L. A., & Glance, N. (2005). The political blogosphere and the 2004 US election: divided they blog. In Proceedings of the 3rd international workshop on Link discovery (pp. 36-43)

Examples

data(polblog_edgelist)
data(polblog)

#From polblog_edgelist to polblog
G<- igraph::graph_from_edgelist(as.matrix(polblog_edgelist), directed = FALSE)
G<- igraph::delete.vertices(G, igraph::degree(G) == 0)
#> Warning: `delete.vertices()` was deprecated in igraph 2.0.0.
#> ℹ Please use `delete_vertices()` instead.
G<- igraph::simplify(G)

polblog
#> IGRAPH c8f356f U--- 1224 16715 -- 
#> + edges from c8f356f:
#>  [1] 1--   2 1--  19 1--  21 1--  48 1--  57 1--  72 1--  97 1-- 127 1-- 156
#> [10] 1-- 193 1-- 204 1-- 205 1-- 254 1-- 287 1-- 341 1-- 377 1-- 390 1-- 446
#> [19] 1-- 451 1-- 498 1-- 499 1-- 501 1-- 518 1-- 909 1--1008 1--1178 2--  16
#> [28] 2--  22 2--  26 2--  46 2--  48 2--  84 2-- 119 2-- 126 2-- 127 2-- 131
#> [37] 2-- 141 2-- 147 2-- 166 2-- 191 2-- 198 2-- 254 2-- 261 2-- 284 2-- 304
#> [46] 2-- 306 2-- 339 2-- 352 2-- 373 2-- 377 2-- 387 2-- 428 2-- 429 2-- 440
#> [55] 2-- 442 2-- 443 2-- 444 2-- 448 2-- 487 2-- 498 2-- 499 2-- 501 2-- 507
#> [64] 2-- 514 2-- 518 2-- 522 2-- 537 2-- 584 2-- 586 2-- 909 3-- 405 3-- 562
#> [73] 3-- 563 3--1180 4-- 574 5-- 359 6--  37 6--  48 6-- 147 6-- 148 6-- 164
#> + ... omitted several edges