Table 1. Basic notation.

N	Total number of neurons
T	Total number of time bins
p obs	Empiric observation probability—the mean fraction of neurons observed at each time bin
p conn	Network sparsity—the average probability that two neurons are directly connected
S	N × T matrix of spike activity
W	N × N matrix of synaptic connection weights
U	N × T matrix of neuronal inputs
b	N×1 vector of neuronal biases
O	N × T binary matrix denoting when neurons are observed
m	N×1 vector of mean spike probability (firing rates)
Σ (k)	N × N matrix of mean spike covariances with lag k