# Stata三个版本介绍

### 谢益辉 / 2006-03-21

Stata/SE, Intercooled Stata, Small Stata

Stata/SE, Intercooled Stata, and Small Stata differ in the size of the dataset that each one can analyze and the maximum length of string variables. Here is a general guideline:

• Stata/SE — Stata for large datasets
• Intercooled Stata — the “standard” version of Stata
• Small Stata — a smaller, “student” version of Stata

Stata/SE

Stata/SE allows datasets with up to 32,766 variables. The limit of observations is based on the amount of RAM in your computer. Stata/SE allows datasets to contain longer string variables — variables up to 244 characters long. Stata/SE also allows matrices up to 11,000 x 11,000 on computers with sufficient memory. An implication of this is that Stata/SE can estimate models with more independent variables (up to 10,998) and can estimate certain panel-data models with larger time-series within panel.

Intercooled Stata

Intercooled Stata allows datasets with as many as 2,047 variables. The limit of observations is based on the amount of RAM in your computer. Intercooled Stata allows string variables to contain a maximum of 80 characters. In addition, Intercooled Stata can have at most 798 right-hand-side variables in a model.

Small Stata

Small Stata is limited to analyzing datasets with a maximum of 99 variables on approximately 1,000 observations. Small Stata allows string variables to contain a maximum of 80 characters. Small Stata can have at most 38 right-hand-side variables in a model.

Requirements

　　　Stata/SE    Intercooled Stata   Small Stata
Memory 　128 MB 　　128 MB 　　　　128 MB
Disk space 　60 MB 　　60 MB 　　　　　60 MB