ZIM

Zero-Inflated Models (ZIM) for Count Time Series with Excess Zeros

CRAN Package

Analyze count time series with excess zeros. Two types of statistical models are supported: Markov regression by Yang et al. (2013) doi:10.1016/j.stamet.2013.02.001 and state-space models by Yang et al. (2015) doi:10.1177/1471082X14535530. They are also known as observation-driven and parameter-driven models respectively in the time series literature. The functions used for Markov regression or observation-driven models can also be used to fit ordinary regression models with independent data under the zero-inflated Poisson (ZIP) or zero-inflated negative binomial (ZINB) assumption. Besides, the package contains some miscellaneous functions to compute density, distribution, quantile, and generate random numbers from ZIP and ZINB distributions.

  • Version1.1.0
  • R versionunknown
  • LicenseGPL-3
  • Needs compilation?No
  • Last release08/28/2018

Documentation


Team


Insights

Last 30 days

This package has been downloaded 263 times in the last 30 days. Now we're getting somewhere! Enough downloads to populate a lively group chat. The following heatmap shows the distribution of downloads per day. Yesterday, it was downloaded 3 times.

Sun
Mon
Tue
Wed
Thu
Fri
Sat
5 downloadsFeb 16, 2025
4 downloadsFeb 17, 2025
16 downloadsFeb 18, 2025
6 downloadsFeb 19, 2025
22 downloadsFeb 20, 2025
20 downloadsFeb 21, 2025
0 downloadsFeb 22, 2025
14 downloadsFeb 23, 2025
12 downloadsFeb 24, 2025
9 downloadsFeb 25, 2025
9 downloadsFeb 26, 2025
8 downloadsFeb 27, 2025
2 downloadsFeb 28, 2025
3 downloadsMar 1, 2025
10 downloadsMar 2, 2025
5 downloadsMar 3, 2025
7 downloadsMar 4, 2025
22 downloadsMar 5, 2025
9 downloadsMar 6, 2025
8 downloadsMar 7, 2025
4 downloadsMar 8, 2025
1 downloadsMar 9, 2025
6 downloadsMar 10, 2025
19 downloadsMar 11, 2025
11 downloadsMar 12, 2025
6 downloadsMar 13, 2025
6 downloadsMar 14, 2025
14 downloadsMar 15, 2025
2 downloadsMar 16, 2025
3 downloadsMar 17, 2025
0 downloadsMar 18, 2025
0 downloadsMar 19, 2025
0 downloadsMar 20, 2025
0 downloadsMar 21, 2025
0 downloadsMar 22, 2025
0
22

The following line graph shows the downloads per day. You can hover over the graph to see the exact number of downloads per day.

Last 365 days

This package has been downloaded 3,338 times in the last 365 days. That's enough downloads to impress a room full of undergrads. A commendable achievement indeed. The day with the most downloads was Sep 11, 2024 with 40 downloads.

The following line graph shows the downloads per day. You can hover over the graph to see the exact number of downloads per day.

Data provided by CRAN


Binaries


Dependencies

  • Imports1 package
  • Suggests2 packages