请写一下关于谣言传播模型ISQR的代码
时间: 2024-05-07 12:20:53 浏览: 22
ISQR是一种基于网络科学和社会学的谣言传播模型,以下是一个简单的Python代码实现:
```python
import networkx as nx
import random
# 初始化网络
def initialize_network(n, m):
G = nx.barabasi_albert_graph(n, m)
for node in G.nodes():
G.nodes[node]['state'] = 0 # 0表示未被激活,1表示已被激活
return G
# 初始化种子节点
def initialize_seeds(G, k):
seeds = random.sample(G.nodes(), k)
for seed in seeds:
G.nodes[seed]['state'] = 1
return seeds
# 计算节点的传播概率
def calculate_propagation_probability(G, p):
for node in G.nodes():
G.nodes[node]['propagation_probability'] = 1 - (1 - p) ** G.degree(node)
# 模拟谣言传播过程
def simulate_spread_of_rumor(G, seeds):
active_nodes = seeds.copy()
while active_nodes:
node = active_nodes.pop(0)
for neighbor in G.neighbors(node):
# 如果邻居节点未被激活,则以一定概率激活该节点
if G.nodes[neighbor]['state'] == 0:
propagation_probability = G.nodes[neighbor]['propagation_probability']
if random.uniform(0, 1) < propagation_probability:
G.nodes[neighbor]['state'] = 1
active_nodes.append(neighbor)
# 计算谣言传播的影响范围
def calculate_influence_range(G):
influence_range = 0
for node in G.nodes():
if G.nodes[node]['state'] == 1:
influence_range += 1
return influence_range
# 运行ISQR模型
def run_ISQR_model(n, m, k, p, iterations):
influence_range_list = []
for i in range(iterations):
G = initialize_network(n, m)
seeds = initialize_seeds(G, k)
calculate_propagation_probability(G, p)
simulate_spread_of_rumor(G, seeds)
influence_range = calculate_influence_range(G)
influence_range_list.append(influence_range)
return influence_range_list
```
其中,`initialize_network`函数用于初始化网络,`initialize_seeds`函数用于初始化种子节点,`calculate_propagation_probability`函数用于计算节点的传播概率,`simulate_spread_of_rumor`函数用于模拟谣言传播过程,`calculate_influence_range`函数用于计算谣言传播的影响范围,`run_ISQR_model`函数用于运行ISQR模型并返回多次运行的结果。
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