结果:找到“atr”相关内容1000个,排序为按回复时间降序,搜索更多相关帖子请点击“高级”
量化投资专题学习资料
5 个回复 - 1817 次查看
内容大致包括如下:
最小方差组合风险收益研究
自组织神经网络模型
指数研究
套利研究
他山之石本土实证
他山之石
算法及高频交易
私募基金研究
市场特征研究
...
2022-4-15 12:29 - wz151400 - 现金交易版
spwmatrix求助
16 个回复 - 4448 次查看
现设有各省市的经纬度数据,在STATA中,用spwm
atrix 来进行权重的生成.结果出错.请问谁知道是怎么回事吗?谢谢!
所用的命令是: spwm
atrix gecon y_stub x_stub,wname(w2) wtype(inv)
: 3499 sp ...
2020-3-26 11:47 - aiyongfang617 - Stata专版
stata中无法下载安装spwmatrix 命令,怎么回事啊
25 个回复 - 11794 次查看
使用:findit spwm
atrix
结果显示:search for spwm
atrix (manual: [R] search)
-------------------------------------------------------------------------------
...
2018-7-26 11:12 - nkliulin - Stata专版
求教,空间计量提示错误:Matrix is not square
17 个回复 - 17262 次查看
Stata15,空间计量,运行 spatwmat using columbusswm.dta, name(W) standardize[/backcolor]
提示错误 [/backcolor]M
atrix is not square[/backcolor]
用的Stata原始数据,看了数据内容,也是方阵啊[/backcolor]
...
2019-7-14 06:42 - yjsun - Stata专版
matrix operation not found
10 个回复 - 8750 次查看
在看陈强的《高级计量经济学及Stata应用》357页时,操作了下稳健的豪斯曼检验的代码
use grilic.dta,clear
rogram hausmantest,eclass
tempname `b' `bols' `biv'
reg lw iq s expr tenure rns smsa,r
m
atrix ` ...
2017-2-23 16:41 - ad002152a - Stata专版
spivregress回归weighting matrix m6 not found
11 个回复 - 2787 次查看
xsmle y x1 x2 lnmarket lntech lnwage lnconsume lnopen lnpop, model(sar) wmat(m6) fe type(both) hausman nolog nsim(500) effects
以上可以正常回归
spset id
spivregress y x2 lnmarket lntech lnwage lnco ...
2020-9-7 21:27 - han汐 - Stata专版
如何解决matrix not symmetric?
8 个回复 - 8101 次查看
在做空间权重矩阵时想要计算特征根矩阵(列向量)E
语句如下:
spatwmat using China30.dta, name(WW) standardize eigenval(E)
为什么不成功?
返回说:
m
atrix not symmetric
r(505);
要怎样才能使 ...
2013-6-9 09:37 - Dyki - Stata专版
Free Probability and Random Matrices
7 个回复 - 1830 次查看
This volume opens the world of free probability to a wide variety of readers. From its roots in the theory of operator algebras, free probability has intertwined with non-crossing partitions, random m ...
2017-6-26 22:22 - nivastuli - 博弈论
MATRIX ANALYSIS AND APPLICATIONS
7 个回复 - 2368 次查看
This balanced and comprehensive study presents the theory, methods and applications of
m
atrix analysis in a new theoretical framework, allowing readers to understand secondorder
and higher-order mat ...
2017-11-7 12:28 - nivastuli - 博弈论
Combinatorial Matrix Theory
7 个回复 - 1605 次查看
This book contains the notes of the lectures delivered at an Advanced Course on Combinatorial M
atrix Theory held at Centre de Recerca Matemàtica (CRM) in Barcelona. These notes correspond to five ser ...
2018-3-31 20:28 - nivastuli - 博弈论
【精神病学重新思考:从医疗到支持理解】 Psychiatry Reconsidered
7 个回复 - 814 次查看
Psychi
atry Reconsidered
From Medical Treatment to Supportive Understanding
Authors: Hugh Middleton
Psychi
atry suffers a lot of criticism, not least from within its own scientifically founde ...
2016-12-31 23:14 - cmwei333 - 经管书评