如何使用 igraph 构建二分图？

Question

我需要为消费者-品牌关系创建一个二分图。

这是我的示例数据：

datf <- data.frame(Consumers = c("A", "B", "C", "D", "E"),
                   Brands = c("Costa", "Starbucks", "Cafe2U", "Costa", "Costa"))

下面的代码给了我一个网络。但是我不确定如何添加节点类型属性来标记消费者和品牌：

    library(igraph) 
    dat=read.csv(file.choose(),header=TRUE) 
    el=as.matrix(dat) 
    el[,1]=as.character(el[,1])
    el[,2]=as.character(el[,2])
    g=graph.edgelist(el,directed=FALSE)

我想创建一个二分图，其边将每个消费者与他们喜欢的品牌联系起来。理想情况下，节点将标有文本。

你能告诉我如何使用 library(igraph) 做到这一点吗？

Answer 1

Shizuka Lab 中的此资源对于使用 igraph 探索 R 中的二分网络非常有用。简而言之：

library(igraph)

# Your matrix containing consumer choice by brands
m = matrix(data = sample(0:1, 25, replace = TRUE), nrow = 5, ncol = 5)
colnames(m) = c("A", "B", "C", "D", "E")
rownames(m) = c("Costa", "Starbucks", "Cafe2U", "Petes", "Philz")

# Convert it to a bipartitie network
bg = igraph::graph.incidence(m)
bg

# See the vertex attributes 
V(bg)$type 
V(bg)$name

# Plot the network
shape = ifelse(V(bg)$type, "circle", "square") # assign shape by node type
col = ifelse(V(bg)$type, "red", "yellow") # assign color by node type

plot(bg, vertex.shape = shape, vertex.color = col)

给出：

如何使用 igraph 构建二分图？

How to construct bipartite graphs using igraph?

r

igraph

bipartite