b*******z 发帖数: 155 | 1 data test;
infile datalines;
input a $ 20 b $;
datalines;
indepent va
;
run;
我run出来是报错的,0 obs
但是sas 123题的第33题答案是 有1个obs ,b是missing value
想确认下这种情况到底是0还是1呢 |
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b**********l 发帖数: 116 | 2 最近做的几个project的data类型都差不多,但是我没有经验,还请熟悉这种data的大
牛赐教。
一般课本上的预测模型,比如一些机器学习的算法,都是row:observation,column:
features。然后每一列都是一个random variable。
但实际我遇到的问题是,又多了一个时间轴:上面的这个obs*feature的data只是固定
一个时间点的切面。需要解决的问题是怎么进行预测。
开始我特别迷茫,后来听人家说这叫做panel data,也就是item*feature*time。我似
乎听说过,在计量经济学的领域。不过计量经济学貌似都是一些线性模型。
我想知道,现在预测模型这么发达,比如LASSO,RT,GBM,SVM,NN,乃至于Deap
learning,有没有能够应用在这种Panel data上的?有没有什么文献可以参考?
实际的一些经验:
- 很显然,这种data 不是iid的。相邻时间的observation可能有关系,肯定需要利用
一下吧。有些问题的item之间也有联系,这种联系也可能要利用一下。
- 如果生硬的把这个三维的数据给melt成二维的,... 阅读全帖 |
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h***i 发帖数: 3844 | 3 如果真的是9个obs就算了吧,我觉得应该直接把这9个obs报上去。 |
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d*****n 发帖数: 1875 | 4 希望现场有你为我加油。Thanks.
Time Estimates:
Swim Time 1:30:00
T1 0:10:00
Bike Speed (mph)
First Half 18.5
Second Half 18.5
T2 0:05:00
Run Pace (min/mi)
First Half 0:09:10
Second Half 0:10:10
Finish Time: 12:01
Description Mile Watch Time Splits
Swim Start 0 7:00 AM
Swim Half-way 1.2 7:45 AM 0:45:00
Swim Finish 2.4 8:30 AM 0:45:00
Bike Start 0 8:40 AM
Verona (start... 阅读全帖 |
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a***s 发帖数: 12296 | 5 据台湾媒体报道,拥有韩国性感小野马之称的泫雅,因拥有火辣身材和姣好脸蛋,加上超群的演唱功力,让她拥有大批死忠粉丝。过去同时进行团体和个人活动的她,在所属团体“4minute”于上月解散后,将在下月1日推出个人专辑回归歌坛,正式以个人身份“出道”,不过现在却传出因为其中一首新歌歌词当中带有不雅字眼,将遭到韩国放送公社(KBS)禁播。
泫雅即将在下月1日推出第5张个人迷你专辑《Awesome》,近日宣传动作频频,由于这是她睽违近1年的全新专辑,令歌迷相当期待。不过据韩媒报导,和MBC、SBS、OBS并列为韩国四大全国性广播机构的韩国放送公社(KBS),昨日(27日)公布未能通过审核的歌曲,其中泫雅新歌《Do it》因歌词出现“Im a bitch”等不雅字眼,被KBS判定未过,未来将不能在KBS播出。
其他同样未通过审核的还有饶舌歌手Heize,她在本月中推出新专辑《And July》,其中《No Way》一曲唱道“give a fuck”也被判未过,另一首《Underwater》也因相同原因遭禁播,而像是“miss A”内地成员霏、男歌手Beenzino、杨东根则因歌曲中提到特定品牌名字... 阅读全帖 |
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k********k 发帖数: 5617 | 7
http://fr-ca.actualites.yahoo.com/canada-magnotta-le-d%C3%A9pec
Canada: Magnotta, le dépeceur présumé d'un étudiant chinois, jugé à
Montréal
Par AFP | Agence France-Presse – il y a 19 heures
Le procès de Luka Rocco Magnotta, accusé d'avoir tué (en mai dernier) un
étudiant chinois et découpé son corps en morceaux tout en enregistrant
ses gestes en vidéo, s'ouvre (lundi) au Palais de justice de Montréal sous
les projecteurs des médias canadiens et étrangers.
Les parents de Lin Jun, venus de Chine... 阅读全帖 |
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g**1 发帖数: 10330 | 8 法国新观察家周刊:北京的做法不可接受
法国新观察家周刊:北京的做法不可接受
法国新观察家杂志Reprodução/L'OBS
法国新观察家周刊驻北京记者高洁(Ursula Gauthier)因有关新疆的报道而即将
被驱逐得到进一步证实。法国新观察家周刊表示北京的做法“不可接受”。该周刊负责
人说,如果在事实上有错,我们当然愿意承认,但我们不会对一个分析道歉。高洁本人
则表示不能为自己没说的话道歉。
中国外交部官网今天12月26日声明指控高洁公然为“恐怖份子行为辩护”。法国新
观察家周刊昨天声明指出,中国当局驱逐其驻北京记者的做法是“不可接受”的,是对
新闻自由的攻击。该周刊负责人马修-克鲁瓦桑多(Matthieu Croissandeau)接受法新
社询问时表示,这是对记者在中国行使工作权利设置障碍。
高洁昨天被中国当局告知将不再向她延发中国签证,意味着她须在12月31日签证到
期之前离境。
高洁11月18日发表有关中国政府在新疆的镇压政策的报道后,即遭到中国环球时报
等官媒围剿。中国当... 阅读全帖 |
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R*****5 发帖数: 4915 | 9 你的英语水平啊,就今天那个法国记者的帖子,你丫连文章里的hostess是啥都不知道。
发信人: beijingren (to thine own self be true), 信区: Military
标 题: 法国女恐怖份子在中国怎么还有这么多二逼陪着?
发信站: BBS 未名空间站 (Thu Dec 31 23:23:24 2015, 美东)
Ursula Gauthier (L), the Beijing-based correspondent for French news
magazine L'Obs, speakes with hostesses at the airport before she takes her
flight back to France, in Beijing on December 31, 2015 (AFP Photo/Fred
Dufour)
发信人: beijingren (to thine own self be true), 信区: Military
标 题: Re: 法国女恐怖份子在中国怎么还有这么多二逼陪着?
发信站: BBS 未... 阅读全帖 |
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t*******a 发帖数: 4055 | 12 法国600多高官收入远超总统
发布时间: 2018-01-19 20:09:19 来源:欧洲时报 作者:凯文编译 浏览
次数:477 评论:0
【欧洲时报凯文编译】正如《火与怒》引爆了美国政坛和舆论界一样,1月18日出版的
一本新书也引爆了法国舆论界。这本名为《国家不可撼动之人》(Les Intouchables d
'état)的新书揭露,法国行政体系内有600多名高官薪水甚至超过总统,更为恶劣的
是,一些高官利用对体制漏洞的了解,在公私领域轮流获益。
《国家不可撼动之人》一书中揭露,法国行政体系内有600多名高官薪水超过总统法国
。(图片来源:法国电视三台电视截屏)
这本新书的作者是《新观察家》(L’Obs)杂志的调查记者饶威(Vincent Jauvert)
。在针对高级公务员的长达数年调查中,饶威成功拿到了一些机密资料,其中显示,法
国行政体系内,年薪高过总统和总理的高级公务员大有人在。
奥朗德执政期间为法国总统和总理职位确定的年薪大约为税后15万欧元。而据饶威披露
的资料显示,2012年时,税后年薪超过15万欧元的高级公务员超过600人。
在各部门当中,... 阅读全帖 |
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p**f 发帖数: 3549 | 14 在新冠疫情大流行的时代,Zoom 等私有软件几乎成为了工作必不可少的工具了。但其
隐私安全也日益引起关注,找到 Zoom 的替代并不难,难的是为了拥有自主掌控的能力
你需要自托管,这需要付出很多努力克服需要困难。
为了软件自由,自由软件基金会(FSF)介绍了 Zoom 的自由软件替代并建议用户自行
托管。
语音会话的替代有 Mumble 和 Asterisk/SIP;视频会话的替代有 Jitsi 和 Jami、OBS
Studio;文字聊天的替代有 XMPP 客户端如 Conversations.im 和 IRC 客户端如 The
Lounge。 |
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l**a 发帖数: 11 | 15 “语音会话的替代有 Mumble 和 Asterisk/SIP;视频会话的替代有 Jitsi 和 Jami、
OBS Studio;文字聊天的替代有 XMPP 客户端如 Conversations.im 和 IRC 客户端如
The Lounge。”
这一段特别有喜感
比如电脑这东西
算数可以用算盘,存储可以用笔纸,拍照可以用相机,联络可以用电话 |
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F*****d 发帖数: 2848 | 16 这个确实脑残,敢用open source的用户肯定不在意隐私,还不如直接用zoom。
OBS
The |
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t****r 发帖数: 1606 | 17 我说这SB有点眼熟,原来是当年那个不会算税还到处指点江山的SB。
https://www.mitbbs.com/article_t/JobHunting/33398865.html
发信人: tonker (黄色), 信区: JobHunting
标 题: Re: bracket 出来了 大家可以不用离婚了 (转载)
发信站: BBS 未名空间站 (Fri Dec 15 22:06:52 2017, 美东)
果然没猜错。你完全不懂什么是tax bracket。
原来在你的概念里,15万的交24%的税 = 3.6万,16万的交32%的税=5.12万。Joke of
the day.
OBS
The |
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s*****n 发帖数: 325 | 18 Exactly
Sounds like a good idea, but the date would be too nice/exciting for us to
be wasted obs........
★ Sent from iPhone App: iReader Mitbbs Lite 7.56 |
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s*****n 发帖数: 325 | 19 Exactly
Sounds like a good idea, but the date would be too nice/exciting for us to
be wasted obs........
★ Sent from iPhone App: iReader Mitbbs Lite 7.56 |
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l**********e 发帖数: 722 | 20 用2x4和4X8的板子钉出来一个1ft高的。4x8就是homedepot那种OBS board,在
homedepot沿横向免费切。你也可以搞别的高度的。 |
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v****e 发帖数: 276 | 21 【 以下文字转载自 Apple 讨论区 】
发信人: Visame (Visame.Org), 信区: Apple
标 题: CNBC纪录片:Ebay传奇
发信站: BBS 未名空间站 (Thu Sep 23 02:56:41 2010, 美东)
The.eBay.Effect.Inside.a.Worldwide.Obsession
下载链接:
http://www.fileserve.com/file/KMgfH3C/The.eBay.Effect.Inside.a.Worldwide.Obs
ession.PDTV.XviD.avi
A CNBC Original Documentary
The eBay Effect - Inside a Worldwide Obsession is the latest production from
the Peabody Award winning CNBC documentary team and reporter David Faber. I
t’s an unprecedented look at the eBay you don |
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t**********r 发帖数: 182 | 22 Thank you.
你这个条件1和条件2我看着怎么重叠啊....
No. There are many obs that meet date1 - date2 >0; but I only want the one
with the min value. |
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j**********e 发帖数: 442 | 23 我想在Compustat下载一个数据库叫做pitidhistus,我运行下面的SAS code:
%let wrds=wrds.wharton.upenn.edu 4016;
options comamid=TCP remote=WRDS;
signon username=_prompt_;
rsubmit;
libname comph '/wrds/comph/sasdata';
data mydata;
set comph.pitidhistus;
proc print data=mydata (obs=30);
run;
endrsubmit;
结果得到:
77 libname comph '/wrds/comph/sasdata';
NOTE: Libref COMPH was successfully assigned as follows:
Engine: V9
Physical Name: /wrds/comph/sasdata
78 data mydata;
79 set comph.pitidhistus;
ERROR... 阅读全帖 |
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F***Q 发帖数: 6599 | 24 try OBS studio
https://obsproject.com/
it is free/open-source software, cross-platform. recording screencasts with
audio and save in various format.
on windows, my favorite screencast software is Instant Demo
http://www.instant-demo.com/
it produces very small files if saving as flash/swf file - for a 20-30 min
recording, the file is only ~10-20MB, with high quality. the trial version
is fully functional, but the output has a link to its website. I ended up
purchasing an educational license (~$1... 阅读全帖 |
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w*****g 发帖数: 798 | 25 二手交易风险自负!请自行验证是否合法和一手卡!:
我想卖的物品:
Sears/Kmart/Lands\\\\' End GC: 5×$25
单张面值:
$25
可接受价格(必须明码标价!):
0.9 OBS
物品新旧要求:
邮寄方式要求:
code only
买卖双方谁承担邮寄损失(Required if not code only):
付款方式说明:
BOA or paypal
其他补充说明:
广告的有效期:
物品来源(Required for All Cards!):
United Airline
我的联系方式:
z******[email protected]
Warranty期限:
能否证明是合法的一手卡?(Required for All Cards!):
state and zip: |
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l*****t 发帖数: 8319 | 26 Honestly speaking, your SAS is weak indeed.
It is true the at proc sql is for amateur. Proc sql will take forever to
merge two dataset with 10M obs each. Without good technical skills, I doubt
your other skills for problem solving. It is a big difference for you to
solve a problem in 1 hr or 1 day using different SAS programing.
I used to be amazed by one of the senior director in my old company when he
showed me his SAS codes, it was by miles more efficient than mine. |
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m******x 发帖数: 35 | 27 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 |
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s*********h 发帖数: 6288 | 28 我用你这个思路做了一下,简单起见只用了两种颜色加上乱选的人
theta1,theta2,lambda
obs = [n1,n2]
简单起见假设了noninformative prior.
所以posterior就是~ (theta1+lambda/2)**n1 * (theta2+lambda/2)**n2
关于这个做了一下simulation可以求出theta1,theta2,lambda的 mean
我用 [30,40]做了一下大概是 0.21,0.34 和0.44。由于simulate时候我用了离散的近
似,加起来不一定是1 |
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n***y 发帖数: 15001 | 29 来自主题: NextGeneration版 - 想换ob try to call other OBs |
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p********5 发帖数: 7433 | 30 death rate of C is very low, <0.01%, and close to natural birth.
you can have 3 or 4 Cs.
After my two Cs, I asked OBs when I can have another. They all told me 6
months.
C is not too bad. The only regretting thing is I do not know how to give
birth to a kid by natural way. |
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V*****8 发帖数: 33122 | 31 Chinese OBs are much better.
Bless. |
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f*****a 发帖数: 61 | 32 怀孕近一个月了,今天准备约OB,但是很多接电话的Nurse都说要7,8周以后才能看出点什
么,所以建议约在那个时候.真的要这么晚第一次见OB吗?还有怎么选择好的OB?
Insurance给出了一个List of OBs,怎么知道哪个好呢? 我在Virginia Fairfax附近,大
家有没有什么好的推荐?
谢谢拉!!! |
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S******o 发帖数: 220 | 33 Once it shows up, it'll stay forever, but the color will change, per my OBs. |
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p*******e 发帖数: 986 | 34 OBs are honest. He/she will only give you note when they think
nessecary. |
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m****i 发帖数: 1982 | 35 Because they have their judgements, and insurance company will only listen
to them. You can say you perfer one way over the other, but your ob makes
the final decision, based on your situation.
Same here. I don't like some OBs in my clinic. Although I scheduled a C-
section appointment with my OB, I am still worried if babies came out
earlier and I had to let the bad doctor do the surgery on me... |
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S******o 发帖数: 220 | 36 Strongly recommend the midwives at IHA, much better than OBs. |
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x**a 发帖数: 152 | 37 different. OB uses a long and thin(very thin) bar to do Group B strep test (
to get culture) and uses fingers to do 宫颈检查(内检). However, some OBs do
both from 36 weeks through birth. You need to check with your OB.
You can say No if you don't want 宫颈检查(内检). I don't think it's
necessary. But for Group B strep test, I guess you had better do it. (even
if you can always say No to your doctor as long as you are responsible for
everything later.) |
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x********i 发帖数: 51 | 38 2008年8月准备怀孕至今试了有不下20次,昨天MISS PERIOD 10天,测了URINE,总算是
PLUS,我的天啊,不容易啊,真要仰天长叹了。两年里因为久试不孕带来的痛苦和烦恼
数之不尽,我想和我有差不多经历的人都会有同感,家人的压力,周围同事朋友的议论
,再加上学业带来的无穷的压力,老公和我都快给压垮了,要不是因为学生保险not
cover infertility,看要花很多钱,我早就去专科医生那儿了。
最近一年我们都不愿意再测尿,因为次次是negative, 觉得不想再受打击,可是因为我
这两天右侧小腹有些不适,尤其是小便的时候,有点牵扯得疼,老公就决定先测测看,
测之前老公还说做好没怀上的准备,不要太失望,结果居然是的,我和老公愣了有半天
没缓过来,我是不敢相信,今天见了校医确诊后才相信自己是怀上了。老公的反应就更
FUNNY了,虚脱,好像喝醉酒一样,晕晕的。
然后我们总结了一下可能成功的原因,首先是STRESS AND PRESSURE, 我觉得这最难对
付,可是又是最关键的,老公比我先毕业,可能他的压力减小了?有可能我最近要毕业
,压力有所转移,不是以前那样OBSES |
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V*****8 发帖数: 33122 | 39 I'm worse than you, my mom asked me to 打掉 even when I was 16 weeks
pregnant, she even called some obs and made arrangement. |
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a**********9 发帖数: 68 | 40 Decided not to do after checking with two OBs. Both of them said "no, not
needed". |
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h*******3 发帖数: 1018 | 41 In your example, 2% risk for 40-year-old is considered normal or better. But
2% is still a pretty high risk. I think most OBs will recommend 检查 in
that case.
On the other hand, let's say average risk of a 20-year-old is 0.1%. A 20-year-old woman found her risk is 0.2%. Although 0.2% is very low, but it's higher than the average, therefore she is worse than normal and should be checked. |
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e********e 发帖数: 435 | 42 基本检查。
(TO)xoplasmosis I don't think OBs routinely check for this. I could be wrong.
(R)ubella yes
(C)MV yes
(H)IV/(HE)rpes yes
(S)yphilis yes
有些医生还check for Parvovirus antibodies (although parvo is not part of the TORCH
technically). |
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B********t 发帖数: 1873 | 43 我的ob不建议我打。
OB背景:连续三年被评为one of the best OBs in DALLAS,
prof. of UTSW |
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k**y 发帖数: 1379 | 44 yes, i think it is usful. 产课 was lectured by midwife from the OB office,
and luckily the midwife delivered my son. It offers an opportuny to get to
know midwifes and OBs, and Peds as well, and the procedure of whole labor. |
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a********r 发帖数: 44 | 45 上个月开始决定尝试一下要孩子,在“危险期”做了两次功课,想着先随便试试吧。。。
今天是我的生日,也是大姨妈推迟来的第7天。早上自己在家里做了preganancy test,
用的是在WALMART买的一个 generic brand. test 结果是negative, 我心里那是百感交
集啊~有点小小失落,又有些庆幸。一方面觉得自己年龄到了,CAREER也处于比较稳定
的阶段,应该要孩子了。另一方面又怕失去现有的自由,有些畏惧为人母所要担当的责
任,害怕有了孩子后就正式进入黄脸婆阶段。。。
心里百味聚集地思想斗争了半天,决定在去看看test stick。突然发现,刚才的TEST
结果不是negative, 是invalid!! 原来我的test方法不对啊。
然后冲去dollar tree 买了些新的preganancy test.回来再测。。。这次。。。。
positive!!!
现在的心情真的很复杂。高兴,忐忑不安,小小失落。。。。
想起前两个星期还去做过山车,喝过酒,吃过寿司,更有些紧张。
打算晚上和老公去吃BIRTHDAY DINNER的时候告诉他这个消息。他可是早就盼着做爸爸... 阅读全帖 |
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z*****9 发帖数: 256 | 46 Different doctors give different suggestions. While it is true that most OBs
here do encourage a repeat cesarean, some (might be very few) encourage
VBAC. Even if a patient can't find any OB supportive of VBAC around her
while her pregnancy stays normal, it doesn't mean that her will for a VBAC
is not supported from some other doctors.
We are not equally lucky to have the same quality doctors. |
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b*******h 发帖数: 233 | 47 Many good OBs at Missouri Baptist Medical Center.
PDs at St. Lukes. |
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w****m 发帖数: 1245 | 48 问了校医院的医生,也是说生完打:
The recommendation is to get it right after delivery. Some OBs will
encourage you to get it even if you are pregnant, but the literature states
that the side effects are unknown. So, I would inquire about getting it at
the hospital when you deliver. |
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p********5 发帖数: 7433 | 49 It is OK in US based on my OBs. |
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B****D 发帖数: 1124 | 50 I prefer clinic office instead of hospital because feel like its easier to
make appointment in Clinic office than hospital when needed lol
But, if you think you will be deliverying at the same hospital then it might
be a good idea to just have all the check ups there and be familiar with
all the OBs at that hospital. |
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