<｜begin▁of▁sentence｜>### Instruction:
Given the Astrophysics collaborations Graph which you can read from a GML file named astro-ph.gml, can you use the regularized spectral clustering community detection algorithm in cdlib with a specific percentile for degree distribution regularization? And can you provide the JSON representation of the NodeClustering object resulting from the algorithm's execution?
### Response:
import networkx as nx
from cdlib import algorithms

# Read the astrophysics collaborations graph
G = nx.read_gml('astro-ph.gml')

# Apply the regularized spectral clustering community detection algorithm
# with a specific percentile for degree distribution regularization
communities = algorithms.r_spectral_clustering(G, n_clusters=3, method='regularized', percentile=20)

# Convert the NodeClustering object to JSON
clusters_json = communities.to_json()

print(clusters_json)
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