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Import data from SAS and SPSS
With Stata 16’s new import sas and import spss commands, you can now import data stored in SAS (.sas7bdat) and SPSS (.sav) formats. The dialog boxes make it easy to explore the data before importing them and, if desired, to select a subset of variables and observations to load into Stata.
In addition, with the new import sasxport8 and export sasxport8 commands, you can import and export SAS XPORT Version 8 Transport files into Stata. The existing import sasxport and export sasxport commands worked with SAS XPORT Version 5 Transport files and have been renamed import sasxport5 and export sasxport5.
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We consider two types of CRIs. The first one is based on quantiles. The second one is the highest
posterior density (HPD) interval.
An f(1 �� ) 100g% quantile-based, or also known as an equal-tailed CRI, is defined as
(q=2; q1��=2), where qa denotes the ath quantile of the posterior distribution. A commonly reported
equal-tailed CRI is (q0:025; q0:975).
HPD interval is defined as an f(1 �� ) 100g% CRI of the shortest width. As its name implies,
this interval corresponds to the region of the posterior density with the highest concentration. For a
unimodal posterior distribution, HPD is unique, but for a multimodal distribution it may not be unique.
Computational approaches for calculating HPD are described in Chen and Shao (1999) and Eberly
and Casella (2003).
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generate’s sum() function creates the vertical, running sum of its argument, whereas egen’s
total() function creates a constant equal to the overall sum. egen’s rowtotal() function, however,
creates the horizontal sum of its arguments. They all treat missing as zero. However, if the missing
option is specified with total() or rowtotal(), then newvar will contain missing values if all
values of exp or varlist are missing.
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讲座主题:从计量模型角度解锁Stata17新功能
讲座时间:5月12日 15:00-16:00
讲座概述: Stata 17的所有功能更新,本次讲座全部囊括。
1、 数据搜集和数据输出
2、 非参数模型
3、 DID模型的命令
4、 离散选择模型
5、 区间删失Cox模型
6、 贝叶斯面板数据模型、贝叶斯多层模型、贝叶斯VAR模型
……
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