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全部话题 - 话题: descents
1 2 3 4 5 6 7 8 9 10 下页 末页 (共10页)
r**********e
发帖数: 194
1
来自主题: DataSciences版 - 有关Stochastic Gradient Descent
你需要去读一下相关的材料,理解Gradient Descent,Stochastic Gradient Descent
和Batch Gradient Descent的区别和联系。一般来说,计算梯度如果在数据量很大的时
候根本算不了,就算内存足够大计算速度也很慢,随机梯度下降法减少了每一步计算梯
度所需要的数据量,大大加快了计算速度。尽管需要的iteration增加了指数级别但总
的计算时间缩短了。在很多real-world online learning的问题中SGD很好的解决了由
于数据进来的方式是sequential的导致GD不能work的情况,而且通过增加iteration的
次数来有效减少每一次iteration所需要的计算量,是一个非常有效的算法。
e*******e
发帖数: 248
2
解一个linear equation system (overdetermined system),用MATLAB的backslash的
结果比用gradient descent (用的neural network)解得的结果差很多。不知道是什么
原因?
查了一下,backslash用least square方法先把overdetermined system的coefficent
matrix变成square matrix,然后用Gaussian elimination。
这种方法为什么比用gradient descent方法得到的结果差很多呢?
e*******e
发帖数: 248
3
解一个linear equation system (overdetermined system),用MATLAB的backslash的
结果比用gradient descent (用的neural network)解得的结果差很多。不知道是什么
原因?
查了一下,backslash用least square方法先把overdetermined system的coefficent
matrix变成square matrix,然后用Gaussian elimination。
这种方法为什么比用gradient descent方法得到的结果差很多呢?
w*******y
发帖数: 60932
4
Amnesia: The Dark Descent is free on May 17th through the Onlive cloud
gaming site.
All the info is here:
http://onlivefans.com/news/amnesia-the-dark-descent-relased-for
.
w*******y
发帖数: 60932
5
REI.com
Gerber Descent Serrated Knife:
http://www.rei.com/product/830701/gerber-descent-serrated-knife
$12.73 (discount seen in cart)
Free shipping
.
w*******y
发帖数: 60932
d****n
发帖数: 626
7
https://www.mercurynews.com/2019/07/19/korean-american-software-engineer-
claims-discrimination-by-intel-managers-of-indian-descent/?from=
singlemessage&isappinstalled=0
Y**s
发帖数: 1632
8
来自主题: Ski版 - Descente jacket + free ski pass
Not sure if anyone would be interested in a new jacket, but there's a pretty
decent Descente jacket promotion going on -- buy a jacket and receives 40
free ski passes (40 different resorts).
Notables are: Park City (UT), Powder Mountain (UT), Holiday Valley (NY),
Okemo (VT). IMO if you use 2 of these free passes it's like $100 off
already :)
I bought their Torque model at a local shop with 15% off, and plan to use at
least 3 of the free passes. You can buy them online as well straight from
th
Y**s
发帖数: 1632
9
来自主题: Ski版 - Descente jacket + free ski pass
Sure. This is my jacket:
http://www.descente.com/product/119495/D9-8651US/_/Torque
The list of resorts are actually in the description on that page for the
jacket - here they are:
Free Lift Ticket at Each Of The Following Resorts:
Copper MTN CO, Winter Park CO, Arapahoe Basin CO,
Powder MTN UT, Bear Valley CA, Alpine Meadows CA,
Big Bear CA, Big Sky MT, Okemo VT,
Nashoba Valley MA, Canyons UT, Spirit MTN MN,
Boyne MTN Boyne Highlands MI, Cannonsburg MI, Indianhead MI,
Shanty Creek MI, Boston Mi
y****n
发帖数: 3184
10
来自主题: Movie版 - the descent 很不错啊
cloverfield是dv形式拍摄
要的就是把效果粗糙化
The Descent和这个完全不一类吧。。。
S*M
发帖数: 10832
11
来自主题: Movie版 - the descent 很不错啊
你说的这个根本不靠谱
Cloverfield顶多是模仿Blair Witch
关Descent什么事儿
y****n
发帖数: 3184
12
来自主题: Movie版 - the descent 很不错啊
cloverfield对气氛的渲染一点也不差
而且纯模仿业余手法的dv拍摄更给人身临其境的感受
The Descent还是传统的密室恐怖片的拍法
但是导演的手法相当纯熟
E**********e
发帖数: 1736
13
来自主题: DataSciences版 - 有关Stochastic Gradient Descent
我试了一下自己写的Stochastic Gradient Descent。 简单的数据比如就只有两个
features。 结果和newton raphson 迭代的结果差不多。 但是一般feature 多了。 结
果差别很大。 我知道SGD 能保证global minimum。但几个测试结果都让人怀疑SGD是
不是很有效。同样的数据用package里的GSD,结果页差很多。但是GSD好像还是比较说
得上的算法。诸位有是么看法。
w***g
发帖数: 5958
14
来自主题: DataSciences版 - 有关Stochastic Gradient Descent
和SGD比的不是牛顿法. 牛顿法是用来解方程的, 不是用来做优化的.
事实上就是解方程, 很多时候也是加上regularization项后转化成
优化问题. 数据量大的时候, 全量的graident descent根本没法做,
只能是SGD. 就是内存够大, SGD也会比GD收敛得快. 一般来说
batch size的最优值在1到N之间. 纯粹的stochastic GC, 也就是
batch size = 1, 有时候也会出问题.
E**********e
发帖数: 1736
15
来自主题: DataSciences版 - 有关Stochastic Gradient Descent
我试了一下自己写的Stochastic Gradient Descent。 简单的数据比如就只有两个
features。 结果和newton raphson 迭代的结果差不多。 但是一般feature 多了。 结
果差别很大。 我知道SGD 能保证global minimum。但几个测试结果都让人怀疑SGD是
不是很有效。同样的数据用package里的GSD,结果页差很多。但是GSD好像还是比较说
得上的算法。诸位有是么看法。
w***g
发帖数: 5958
16
来自主题: DataSciences版 - 有关Stochastic Gradient Descent
和SGD比的不是牛顿法. 牛顿法是用来解方程的, 不是用来做优化的.
事实上就是解方程, 很多时候也是加上regularization项后转化成
优化问题. 数据量大的时候, 全量的graident descent根本没法做,
只能是SGD. 就是内存够大, SGD也会比GD收敛得快. 一般来说
batch size的最优值在1到N之间. 纯粹的stochastic GC, 也就是
batch size = 1, 有时候也会出问题.
w*******y
发帖数: 60932
17
Title says it all
Steam has Amnesia: The Dark Descent for $9.99
Linky:
http://store.steampowered.com/app/57300/
D*********n
发帖数: 279
18
来自主题: Military版 - Native Americans in the United States
http://en.wikipedia.org/wiki/Native_Americans_in_the_United_Sta
Native Americans in the United States
From Wikipedia, the free encyclopedia
Jump to: navigation, search
"American Indian" redirects here. For other indigenous peoples, see
Indigenous peoples of the Americas and other geographic regions. For
Americans from South Asia, see Indian American.
This article may be too long to read and navigate comfortably. Please
consider splitting content into sub-articles and/or condensing it. (January
2... 阅读全帖
f**d
发帖数: 768
19
来自主题: Neuroscience版 - eBook: From computer to brain
这是一本计算神经科学的优秀著作,全文拷贝这里(图和公式缺),有兴趣的同学可以
阅读
如需要,我可以分享PDF文件(--仅供个人学习,无商业用途)
From Computer to Brain
William W. Lytton
From Computer to Brain
Foundations of Computational Neuroscience
Springer
William W. Lytton, M.D.
Associate Professor, State University of New York, Downstato, Brooklyn, NY
Visiting Associate Professor, University of Wisconsin, Madison
Visiting Associate Professor, Polytechnic University, Brooklyn, NY
Staff Neurologist., Kings County Hospital, Brooklyn, NY
In From Computer to Brain: ... 阅读全帖
V*****n
发帖数: 893
20
来自主题: Cycling版 - 第一次Group Ride求建议
Version 9.1 1
Riding the Paceline
Prologue
A pace line is a group of riders who trade off the lead to share the effort
of riding in front so that the other
riders can rest in the draft that is created. Some of the benefits of a
paceline are safety, efficiency, and
speed. Pacelines that lack discipline can be annoying and even dangerous.
Stage One - Basics
Group Interaction
Individual energy contributes to the group energy. How an individual
interacts with the group is important
and can have an i... 阅读全帖
e****i
发帖数: 2152
21
【 以下文字转载自 Military 讨论区 】
发信人: erkuai (三天不上bbs,赶得上刘少奇), 信区: Military
标 题: On the Jews and Their Lies, 1543
发信站: BBS 未名空间站 (Wed Jan 12 23:21:23 2011, 美东)
by Martin Luther (1483-1546)
Translated by Martin H. Bertram
copyright © 1971 Fortress Press & Augsburg Fortress - On the Jews and
Their Lies is from Luther’s Works Volume 47. Augsburg Fortress is the
publishing ministry of the Evangelical Lutheran Church in America.
Funded through sales revenue, Augsburg Fortress is called to provide
produ... 阅读全帖
e****i
发帖数: 2152
22
来自主题: Military版 - On the Jews and Their Lies, 1543
by Martin Luther (1483-1546)
Translated by Martin H. Bertram
copyright © 1971 Fortress Press & Augsburg Fortress - On the Jews and
Their Lies is from Luther’s Works Volume 47. Augsburg Fortress is the
publishing ministry of the Evangelical Lutheran Church in America.
Funded through sales revenue, Augsburg Fortress is called to provide
products and services that communicate the Gospel, enhance faith, and
enrich the life of the Christian community from a Lutheran perspective.
Part I
I had mad... 阅读全帖
e*******n
发帖数: 872
23
来自主题: DataSciences版 - 40道经典DS/ML面试题解答,求指导
原题见
http://www.mitbbs.com/article_t/DataSciences/10029.html
专门开一个贴,尝试逐题解答。本人菜鸟,求大牛指导
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
1. Given a coin you don’t know it’s fair or unfair. Throw it 6 times and
get 1 tail and 5 head. Determine whether it’s fair or not. What’s your
confidence value?
我的答案是:
H0: the coin is fair
Ha: the coin is unfair
X is the number of heads
Rejection region: |X - 3| > 2, i.e., X = 0,1,5,or 6
significance level alpha:
alpha = P(reject H0 | H0 i... 阅读全帖
j******a
发帖数: 1582
24
来自主题: Movie版 - AVATAR观后感(长,慎入)
他大概光知道descent有血统的意思,不知道descent也有下降的意思
其实下降还是descent的本义,血统是引申义
估计他联系上下文的能力也不是太理想,否则descent前面用的修饰语是deliberate,
句子末尾又有from heaven to earth,将descent作血统解很难说得通啊
l**********r
发帖数: 4612
25
【 以下文字转载自 Seattle 讨论区 】
发信人: Gerdo (推自动交易), 信区: Seattle
标 题: 常见的贬损中国人的鹰文短语
发信站: BBS 未名空间站 (Mon Feb 20 21:09:42 2012, 美东)
如果碰到,一定要坚决作有理有利的斗争。欢迎有经验的人士补充。
参考文献:
http://en.wikipedia.org/wiki/List_of_ethnic_slurs
=================================================
ABC
(Chinese in the U.S.) American-born Chinese, a term used to refer to Chinese
people who were born in the United States.
Ching Chong
(U.S. and Canada) mocking the language of or a person of perceived Chinese
or East Asian descent. An offe... 阅读全帖
I******a
发帖数: 3812
26
http://gyral.blackshell.com/names.html
Visit the original once in a while. Apparently, it's chock full o' updates.
Slur Represents Reasons/Origins
51st Stater Canadians Self-explanatory.
Abba-Dabba Arabs Used in the movie "Betrayed" by rural American hate group.
Abo Australian Aboriginal Derogative shortened term for Aboriginal.
Adolf Germans Hitler, of course. Generally thought of the worst person ever.
Ahab Whites From Moby-Dick. Ahab hunted the white whale.
Ainu Japanese Aboriginal Originall... 阅读全帖
s*********5
发帖数: 5637
27
有网友问其他媒体怎么讨论这个大学录取的“族裔考虑”的情况,这里有两篇文章供大
家参考。第二篇文章的作者好像是个反歧视的专家,在文章里把正向歧视和方向歧视分
析了一番。其实简单说来,提高亚裔的入学门槛就是对亚裔的反向歧视。
这次80-20请的就是有着丰富宪法/民权的犹太律师帮大家准备的“法律之友”,和我们
亚裔合作的犹太组织是Brandeis Center For Human Rights, a well-known Jewish
org., to co-file an amicus brief. Kenneth Marcus, Center's President, was
staff director of The federal Civil Rights Commission. Marcus said,"It wasn'
t right for the Ivies to limit Jewish students then, it's not right for
Ivies to limit Asian Ams students now."
http://brandeisc... 阅读全帖
s*********5
发帖数: 5637
28
100多年前,藤校也是怕犹太人over represent了,所以用各种理由限制犹太人入学。
现在他们觉得亚裔的处境就和他们当年一样所以愿意过来帮亚裔支持反高校入学用‘族
裔’做理由提高亚裔入学门槛的做法。这里有两篇美国媒体的文章分析这件事, 大家
可以看看:
Subject: Weekly Standard- The New Jews They're Asian Americans. Ethan
Epstein June 11, 2012, Vol. 17, No. 37
______________________________________
The New Jews, They're Asian Americans.
Ethan Epstein
June 11, 2012, Vol. 17, No. 37
Like many colleges and universities, Princeton professes its devotion to “
institutional equity and diversity.” The university’s website ... 阅读全帖
s*********5
发帖数: 5637
29
今天听到一档节目讲到许多著名的犹太艺人出道前都把自己的名字改了,这样有偏见的
人就不知道他们是犹太人。其中提到的名人有Woody Allen,Bob Dylan, Mel Brooks,
George Gershwin等等。难道我们亚裔要争取公平上高校的机会也得更名改姓吗?
艺名。。。。。。。。。。。。。。。。。。。原名
Joey Adams ............................. Joseph Abramowitz
Eddie Albert ............................ Eddie Heimberger
Woody Allen............................. Allen Konigsberg
Lauren Bacall .......................... Joan Perske
Jack Benny ............................. Benny Kubelsky
Milton Berle ........................... Milton Berli... 阅读全帖
G***o
发帖数: 5158
30
来自主题: Seattle版 - 常见的贬损中国人的鹰文短语
如果碰到,一定要坚决作有理有利的斗争。欢迎有经验的人士补充。
参考文献:
http://en.wikipedia.org/wiki/List_of_ethnic_slurs
=================================================
ABC
(Chinese in the U.S.) American-born Chinese, a term used to refer to Chinese
people who were born in the United States.
Ching Chong
(U.S. and Canada) mocking the language of or a person of perceived Chinese
or East Asian descent. An offensive term which has raised considerable
controversy when used by celebrities such as Rosie O'Donnell.
Chinaman
found offe... 阅读全帖
s*******n
发帖数: 12995
31
☆─────────────────────────────────────☆
Gerdo (推自动交易) 于 (Mon Feb 20 21:09:42 2012, 美东) 提到:
如果碰到,一定要坚决作有理有利的斗争。欢迎有经验的人士补充。
参考文献:
http://en.wikipedia.org/wiki/List_of_ethnic_slurs
=================================================
ABC
(Chinese in the U.S.) American-born Chinese, a term used to refer to Chinese
people who were born in the United States.
Ching Chong
(U.S. and Canada) mocking the language of or a person of perceived Chinese
or East Asian descent. An offensive term which has raise... 阅读全帖
l*****9
发帖数: 9501
32
Jeremy Lin: 5 Reasons He Is the Point Guard of the Future for New York
Knicks
Jeremy Lin's spectacular play in the last two games is no fluke, and the
second-year man is the New York Knicks' long-term solution at point guard.
The former Harvard standout scored 25 points against the New Jersey Nets on
Saturday night, and then followed up his breakout performance with a 28-
point game in his first career start.
Lin has massive appeal because he is the first American-born NBA player of
Taiwanese/Ch... 阅读全帖
w****1
发帖数: 4931
33
来自主题: Running版 - Bear Mountain 50 miler
It was just past 8am, and I found myself in Bear Mountain, NY, having been
running for the last 3 hours. A few minutes ago I was at the aid station at
mile 13.9, snatched a few boiled potatoes dipped in salt, grabbed a quarter
peanut butter sandwich, and dropped a Nuun electrolyte tablet in my
waterbottle. Any other day, I would have been wondering, how could I
possibly run THAT slow, covering only 14 miles in 3 hours? But today,
staring down the trails, I was thinking more like, how could one p... 阅读全帖
s******p
发帖数: 819
34
Pain is inevitable, suffering is optional, and enjoying is essential - a 50 mile journey through the Bear Mountain.
Prologue
Exactly one year ago, I did my first ever ultramarathon at The North Face
Bear Mountain 50 Miles. It was a very last minute decision inspired by Pen
and Tonyprince. It wasn’t a wise decision because I had very little
training after 2009 NYC marathon and Bear Mountain is a rough terrain where
I only hiked a few times. But looking back I am very glad that I did it.
Even thou... 阅读全帖
r********3
发帖数: 2998
35
来自主题: CS版 - Valiant 是理论大牛
我刚也看了一下,这篇文章是有点问题。
它开篇的例子是说,给定1000个数据,就能够达到5%的generation error。那么我有10
倍1000的数据,意味着我有更多的资源,我training的performance不应该比资源少的
时候更差。
你说的stochastic gradient descent在这里是有道理的。数据少的时候,你为什么不
能用stochastic gradient descent?为什么每个数据要反复看,反复纠正你的margin
?你不确定training出来到底好不好,所以必须找尽量的margin,给你尽量大的
classification confidence。
当你数据多的时候,为什么可以用stochastic gradient descent?因为你数据多,即
便每个数据的利用度很低,总共扫完所有数据之后,我一样可以达到一个比较准确的分
界面。
于是,stochastic gradient descent每个数据只扫一遍,当然就比原先反复看,
interoir point反复迭代得快了。
但是,我个人觉得,两者根本不具备比较性。这个跟解决大数据的... 阅读全帖
p***r
发帖数: 920
36
Depending on your target job market and the job type you are looking.
Suggestions below are only based on my observations and I'm everyone has
different opinions, wish this is helpful
1. Pharm Statistician: PHD
2. Pharm SAS programmer: Master
3. Finance Modeler: PHD
4. Finance Consulting: Master
4. Conventional Marketing Analytics: Master
5. IT Data Scientist: PHD
We can also look at this problem from another dimension. There is generally
3 trend in the job market:
A. require advanced methodolog... 阅读全帖
f********4
发帖数: 2883
37
来自主题: Military版 - StevenQueen, 该向FBI举报的在这里
StevenQueen,如果你对wayoffflying的话都觉得是个罪行,以下这些组织和个人你都必
须要向FBI举报, 他们在网上从来没有停息过的叫嚣要清除你StevenQueen一类的非白
人,包括人道消灭和不人道的消灭,他们宣称“The race war is coming, be
prepared" -种族战争即将到来,准备好。他们甚至还建立了各种militia,白人民兵组
织,组织起来练武打靶,已经不仅是言论而是实在的威胁了!这是对你的真正威胁,你
要是不举报就证明你举报wayofflying的行为不过是一种仅仅针对中国人的汉奸行为。
你既然敢举报他,就应该敢把你的身份亮出来,这样你身边的中国人以后提高警惕防范
你。
American Third Position Party
Aryan Guard
Aryan Nations
Australia First Party
Australian Protectionist Party
National Front (United Kingdom)
British National ... 阅读全帖
A********n
发帖数: 163
38
【 以下文字转载自 CivilSociety 讨论区 】
发信人: Autonation (新同盟会成立了!), 信区: CivilSociety
标 题: 2013年12月1日,“新同盟会”(Chinese United)成立
发信站: BBS 未名空间站 (Sun Dec 1 16:17:05 2013, 美东)
2013年12月1日,一个崭新的华人组织在美国成立了,她的名字叫“新同盟会” 英文名
字为: Chinese United
http://www.weidb.com/voice/index.php?title=Chinese_United
成立宣告(簡體中文)
新同盟会 成立宣告
自2013年10月20日参与抗议ABC活动以来,我们进一步意识到海外华人的生存困境,我
们大家的信仰进一步坚定:华夏子孙的尊严和平等,从来不该是坐等其成,而必须是通
过自己的智慧和汗水来争取。
怎样才能更有效地争取我们的尊严和平等呢?是靠草根,还是一个组织?这个曾经成了
我们纠结的问题: 作为草根,甚至作为自由主义者,我们一直认为,草根才是各种运动
的基础和依托。目前在美华人最关键的问题在于... 阅读全帖
T**********e
发帖数: 29576
39
SpaceX的实用F9火箭一千米回收实验

SpaceX plans to recover stages when customers allow
BY STEPHEN CLARK
Encouraged by the soft landing of a Falcon 9 rocket's first stage in the
Atlantic Ocean after liftoff April 18, SpaceX plans a series of stage
retrieval tests over the next few months, but only on missions where the
launcher has enough leftover fuel to accomplish the complicated re-entry
maneuvers required to safely return a rocket to Earth.
SpaceX hopes the experiments will lead to returning a rocket i... 阅读全帖
G*******n
发帖数: 6889
40
来自主题: Military版 - 中国2020年登陆火星
http://gbtimes.com/china/china-racing-make-2020-launch-window-m
Andrew Jones
2016/02/22
Mars Exploration Rover Spirit captures a stunning view as the sun sank below
the rim of the Gusev crater on Mars on May 19, 2005.Mars Exploration Rover
Spirit captures a stunning view as the sun sank below the rim of the Gusev
crater on Mars on May 19, 2005. (Photo: NASA/JPL/Texas A&M/Cornell)
Tags:
China's space programMarsNational Space Science CenterChina Aerospace
Science and Technology CorporationEur... 阅读全帖

发帖数: 1
41
原创 2017-08-28 解滨 美国华人之声
波士顿,8月27日,又一件华人社区的大事: 来自波士顿当地,麻省各地以及邻近的华
人同胞在这里聚会,抗议亚裔细分。
为了我们的合法权益,为了我们的孩子,为了我们的未来,8月27日,数百人聚集在波
士顿,举行了一次抗议亚裔细分的集会游行。 这是两个月以来规模最大的一次抗议亚
裔细分的集会。
同胞们从四面八方来到了波士顿:
抗议开始了:
这是SWAN女士在发言,她以大量的事实痛陈亚裔细分的种种荒谬(她的发言全文见附录
1):
这是赵磊律师在发言,她以亲身的经历告诉听众亚裔细分是多么歧视我们美国亚裔(她
的发言全文见附录2):
陈建豪,罗德岛参加这次集会的团队负责人发表了演讲:
刘政先生(右)在集会上发言:
联邦参议员参选人Geoff Diehl 的幕僚Jeff Bailey先生参加了集会并发表了演讲,指
出亚裔细分是歧视性的提案:
前天我提到,牛气冲天的印度裔科学家,Email的发明者,美国2018联邦参议员的参选
者,Shiva Ayyadurai博士将参加这个集会并发表演讲,果然他来到了这个集会并且发
表了震聋发聩的演讲:
这是Shiv... 阅读全帖
A********n
发帖数: 163
42
【 以下文字转载自 CivilSociety 讨论区 】
发信人: Autonation (新同盟会成立了!), 信区: CivilSociety
标 题: 2013年12月1日,“新同盟会”(Chinese United)成立
发信站: BBS 未名空间站 (Sun Dec 1 16:17:05 2013, 美东)
2013年12月1日,一个崭新的华人组织在美国成立了,她的名字叫“新同盟会” 英文名
字为: Chinese United
http://www.weidb.com/voice/index.php?title=Chinese_United
成立宣告(簡體中文)
新同盟会 成立宣告
自2013年10月20日参与抗议ABC活动以来,我们进一步意识到海外华人的生存困境,我
们大家的信仰进一步坚定:华夏子孙的尊严和平等,从来不该是坐等其成,而必须是通
过自己的智慧和汗水来争取。
怎样才能更有效地争取我们的尊严和平等呢?是靠草根,还是一个组织?这个曾经成了
我们纠结的问题: 作为草根,甚至作为自由主义者,我们一直认为,草根才是各种运动
的基础和依托。目前在美华人最关键的问题在于... 阅读全帖
m******x
发帖数: 35
43
有些是lz自己面的有些是各处收集来的 红/绿皮书的题就不贴了 可能有些时间的原因
难免可能记错一些 请大家
包含!~
待lz想起来会不定期更新
---
explain EM algorithm, use EM algorithm to find SVD of a given matrix
---
Assume if you write an online training model, estimate how many obs the
parameters start to converge
Whats the convergence rate of online training algorithm (e.g. stochastic
gradient descent)
Convergence rate of gradient descent?
How many points are needed to converge give dim of feature space ?
Derive gradient descent formula
---
reservoir sampling... 阅读全帖
s********e
发帖数: 35
44
来自主题: NextGeneration版 - asian真的比较难生孩子么?
请教一个我的迷思。一直听说中国妈妈生孩子的时候比较难生,孩子的头跟肩比较大所
以要更难
生一点,所以会需要做月子恢复。可是我查了一些数据,貌似中国人的baby重量还有头
的周长都
比较小啊。。
Results: At 40 weeks, infants of European descent (“European” infants)
weighed
225.5 g more on average than infants of Chinese descent (“Chinese” infants
) (p <
0.001) and 254.6 g more than infants of South Asian descent (“South Asian”
infants)
(p < 0.001). The mean difference in birth weight between Chinese and South
Asian
infants (19.1 g) was not statistically significant. The mean length of
Europe... 阅读全帖
D*****I
发帖数: 987
45
来自主题: EB23版 - 美国移民法案历史回顾
Reflecting on comprehensive immigration reform
July 14, 2013 By NDG Staff Writer No Comments
downloadBy William E. Spriggs
Americans have now celebrated July 4th, 2013, and America’s independence.
It was also a time when public ceremonies were held to swear in newly
naturalized American citizens. That gives us a chance to reflect on
comprehensive immigration reform and think about the economic implications.
First, it is important to look back at U.S. immigration law. In the
beginning, the United... 阅读全帖
f******r
发帖数: 1105
46
HOURS after a Qantas jet plunged almost 8000m during an emergency descent
yesterday a Sydney-bound flight was forced to return to Bangkok because of
engine problems.
Flight QF2 carrying 352 passengers was about 30 minutes into its flight from
Bangkok International Airport when one of its engines began "consuming fuel
more quickly than normal'' a Qantas spokesman said.
It was forced to return to Bangkok where it landed safely about 7pm local
time (11pm AEST).
Affected passengers are expected to s... 阅读全帖
z****g
发帖数: 586
47
来自主题: Carolinas版 - Newsobsever Raleigh 游行报道
RALEIGH — More than 300 people, spurred by a late-night skit on national
television that offended people of Chinese descent across the country,
marched in protest Saturday in downtown Raleigh.
The protesters were outraged at ABC’s “Jimmy Kimmel Live.” On Oct. 16,
the late-night show host asked a roundtable of children what the United
States should do about its debt crisis.
“Shoot cannons all the way over and kill everyone in China!” one boy
suggested.
Kimmel appeared to briefly mull over the ide... 阅读全帖
k*********9
发帖数: 918
48
来自主题: Carolinas版 - 新同盟会今天成立
发信人: Autonation (新同盟会成立了!), 信区: CivilSociety
标 题: 2013年12月1日,“新同盟会”(Chinese United)成立
发信站: BBS 未名空间站 (Sun Dec 1 16:17:05 2013, 美东)
2013年12月1日,一个崭新的华人组织在美国成立了,她的名字叫“新同盟会” 英文名
字为: Chinese United
http://www.weidb.com/voice/index.php?title=Chinese_United
成立宣告(簡體中文)
新同盟会 成立宣告
自2013年10月20日参与抗议ABC活动以来,我们进一步意识到海外华人的生存困境,我
们大家的信仰进一步坚定:华夏子孙的尊严和平等,从来不该是坐等其成,而必须是通
过自己的智慧和汗水来争取。
怎样才能更有效地争取我们的尊严和平等呢?是靠草根,还是一个组织?这个曾经成了
我们纠结的问题: 作为草根,甚至作为自由主义者,我们一直认为,草根才是各种运动
的基础和依托。目前在美华人最关键的问题在于, 我们个体没有站出来的热情,把这种
热情激发出来才是最关... 阅读全帖
G****a
发帖数: 10208
49
来自主题: Missouri版 - zz 强奸惯犯出没,大家注意安全
http://www.stltoday.com/news/local/crime-and-courts/ab25033b-49
ST. LOUIS COUNTY • A third woman may have been attacked by a serial
rapist whom police believe is targeting Asian woman in northwestern St.
Louis County, police said at a town hall meeting and safety class Tuesday at
Parkway North High School.
In an attack sometime in June 2011, a woman was outside an apartment
building in the Beau Jardine apartments near North Lindbergh and Olive
boulevards. The man grabbed her around the nec... 阅读全帖
A********n
发帖数: 163
50
【 以下文字转载自 CivilSociety 讨论区 】
发信人: Autonation (新同盟会成立了!), 信区: CivilSociety
标 题: 2013年12月1日,“新同盟会”(Chinese United)成立
发信站: BBS 未名空间站 (Sun Dec 1 16:17:05 2013, 美东)
2013年12月1日,一个崭新的华人组织在美国成立了,她的名字叫“新同盟会” 英文名
字为: Chinese United
http://www.weidb.com/voice/index.php?title=Chinese_United
成立宣告(簡體中文)
新同盟会 成立宣告
自2013年10月20日参与抗议ABC活动以来,我们进一步意识到海外华人的生存困境,我
们大家的信仰进一步坚定:华夏子孙的尊严和平等,从来不该是坐等其成,而必须是通
过自己的智慧和汗水来争取。
怎样才能更有效地争取我们的尊严和平等呢?是靠草根,还是一个组织?这个曾经成了
我们纠结的问题: 作为草根,甚至作为自由主义者,我们一直认为,草根才是各种运动
的基础和依托。目前在美华人最关键的问题在于... 阅读全帖
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