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You may also take a look at the source code.
The network in this dataset can be loaded directly from graph-tool with:
import graph_tool.all as gt
g = gt.collection.ns["fly_hemibrain"]

fly_hemibrain — Fly hemibrain (2020)


A synaptic map of the hemibrain connectome of fruit fly Drosophila melanogaster. Nodes are neurons, and edges are synaptic connections, traced individually from brain image sections using EM reconstruction techniques. Neurons are labeled by their type. Edges are annotated by the connection strength between the neurons.1

  1. Description obtained from the ICON project. 

Biological Connectome Weighted Metadata
Upstream URL OK
Tip: hover your mouse over a table header to obtain a legend.
Name Nodes Edges $\left<k\right>$ $\sigma_k$ $\lambda_h$ $\tau$ $r$ $c$ $\oslash$ $S$ Kind Mode NPs EPs gt GraphML GML csv
fly_hemibrain 21,739 4,259,624 195.94 419.23 493.08 18.04 0.00 0.25 5 1.00 Directed Unipartite bodyId type instance weight roi 7.9 MiB 22.4 MiB 17.2 MiB 16.1 MiB
None drawing