N********n
发帖数: 13236 | 1 【 以下文字转载自 WaterWorld 讨论区 】
发信人: mobster678 (书记来了，闺女快跑！), 信区: WaterWorld
标 题: 坐出租车3公里，被收了780刀，帮忙看看这个司机是不是烙印
发信站: BBS 未名空间站 (Thu Mar 20 12:36:56 2014, 美东)
这个司机名字叫Ali Ghazanfari，大家帮忙看看是哪国人？
一个女大学生打车，下车后没钱想刷卡，司机说刷卡机坏了，要用一个苹果手机刷卡附
件刷钱，女大学生没仔细看，结果被刷了787刀。
A college student from Winnetka, Illinois jumped into a cab for a short ride
to a restaurant in downtown Chicago, but instead of a couple dollars, she
was charged almost $800.
In December, 20-year-old Becky Siegel was running late to meet friends at... 阅读全帖 |
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m********8
发帖数: 938 | 2 这个司机名字叫Ali Ghazanfari，大家帮忙看看是哪国人？
一个女大学生打车，下车后没钱想刷卡，司机说刷卡机坏了，要用一个苹果手机刷卡附
件刷钱，女大学生没仔细看，结果被刷了787刀。
A college student from Winnetka, Illinois jumped into a cab for a short ride
to a restaurant in downtown Chicago, but instead of a couple dollars, she
was charged almost $800.
In December, 20-year-old Becky Siegel was running late to meet friends at
the Sweetwater Tavern and Grille, so she went immediately from the Metra
train to a cab at the Ogilvie Transportation Center.
View photo
.
Becky Siegel (... 阅读全帖 |
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发帖数: 1 | 3 企业号战后报告：
PRELIMINARY
On the afternoon and evening of June 3, 1942, the general situation
prior to the battle was as follows (times throughout are Zone plus 10): Task
Force Seventeen and Task Force Sixteen had previously rendezvoused in the
general vicinity of "Point Luck", approximately 350 miles northeast of
Midway Island and were operating in that area closing Midway during darkness
and opening during the day, remaining east of the longitude of Midway. Both
Task Forces has complete... 阅读全帖 |
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发帖数: 1 | 4 企业号战后报告：
PRELIMINARY
On the afternoon and evening of June 3, 1942, the general situation
prior to the battle was as follows (times throughout are Zone plus 10): Task
Force Seventeen and Task Force Sixteen had previously rendezvoused in the
general vicinity of "Point Luck", approximately 350 miles northeast of
Midway Island and were operating in that area closing Midway during darkness
and opening during the day, remaining east of the longitude of Midway. Both
Task Forces has complete... 阅读全帖 |
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w***s
发帖数: 7132 | 6 http://www.knoxnews.com/news/2009/jun/07/authorities-kill-knoxville-black-bear/
Authorities kill Knoxville black bear
By J.J. Stambaugh (Contact)
Originally published 03:58 p.m., June 7, 2009
Updated 03:58 p.m., June 7, 2009
GET REPRINTS
Want to use this article? Click here for options!
KNOXVILLE - Authorities have captured and killed a black bear that entered a
West
Knoxville woman’s home last week, a Tennessee Wildlife Resources Agency
official
said today.
The bear was caught after it was a |
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b********n
发帖数: 38600 | 7 http://www.ebay.com/itm/Albert-Einstein-Historic-1954-God-Lette
This private letter expresses views never meant for public consumption by of
one of the most prolific minds of modern times on the subjects of God,
religion and tribalism.
Few people have had access to the thoughts and uncensored opinions of this
brilliant mind as it relates to his personal views on God and religion. The
personal nature of the letter and the timing of it in Albert Einstein's life
adds to the implication of the certa... 阅读全帖 |
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r*****3
发帖数: 143 | 8 About This Book
Estimate market risk, form various portfolios, and estimate their variance-
covariance matrixes using real-world data
Explains many financial concepts and trading strategies with the help of
graphs
A step-by-step tutorial with many Python programs that will help you learn
how to apply Python to finance
Who This Book Is For
Python for Finance is perfect for graduate students, practitioners, and
application developers who wish to learn how to utilize Python to handle
their financia... 阅读全帖 |
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r********s
发帖数: 45 | 9 一看是Pastor和Stambaugh，基本就是parameter uncertainty + Bayes了。intuition
在abstract里已经比较清楚了。很奇怪的就是这个非常straightforward，居然之前没
人做过。 |
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r********s
发帖数: 45 | 10 一看是Pastor和Stambaugh，基本就是parameter uncertainty + Bayes了。intuition
在abstract里已经比较清楚了。很奇怪的就是这个非常straightforward，居然之前没
人做过。 |
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J*****n
发帖数: 4859 | 11
Stambaugh's framework. |
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A********a
发帖数: 133 | 12 all in the Regression with Missing Data section, check details at www.
mathworks.com. Previously, we used Stambaugh's, now we switch to EM, which
is more flexible. |
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A********a
发帖数: 133 | 13 U need reduce the dimension of the problems, first because stock returns are
likely driven by a few factors, second because there are missing obs for
such data sets. For the first, u need a factor model (Barra, Northfield, APT
, etc), for the latter, u need some robust methods to accommodate missing
observations, e.g., Em algo, Stambaugh's method and others.
To make the covariance matrix spf is easy, do the eigen-decomp, and ... |
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