Flexible Lévy-Based Models for Time Series of Count Data with Zero-Inflation, Overdispersion, and Heavy Tails

Table 6

Parameter estimates for the PIG-Lévy-based model with an exponential kernel after fitting to NSF data.

Parameters
Estimate values	0.6219	1.0351	2.5396
Standard error	0.0037	0.0147	0.0840