l*****e
发帖数: 238 | 1 surely uncountable
define
f_a = x, for x \in [0,a]
a, for x > a
each of the above is continuous, and the collection {f_a} is uncountable,
due to the natural 1-1 correspondence with {a} for a \in [0,1] |
|
j******w
发帖数: 690 | 2 has size 2^{\aleph_0}.
Just notice that every continuous function is decided by the
function restricted to rational numbers. |
|
A****e
发帖数: 44 | 3 Let f and f_n be functions from R to R. Assume f_n(x_n) --> f(x) as n-->
infty and for any sequence x_n --> x. Show that f is continuous.
书后的一道练习题，想了好久还没什么招，请指教。
多谢了! |
|
b****t
发帖数: 114 | 4 If any piecewise linear function defined on R^n bounded, can we say this is
a lipschitz continuous function? if yes, any scatch for proof?
Thanks in advance.
Beet |
|
m****n
发帖数: 45 | 5 it may not even be continuous
is |
|
b****t
发帖数: 114 | 6
Oho, assume it is continuous of course...bounded then is it must be
lipschitz on R^n or on a bounded set of R^n? |
|
c****r
发帖数: 80 | 7 wiki上的定义都是单元的，我想知道对于多元函数的偏导，Lipschitz continuous 是如
何定义的 |
|
y****y
发帖数: 275 | 8 我们需要买一个continuous centrifuge， 大型的有commercialized的，但是我们需要
体积和容量小的，可以fit进我们实验室和试验台上的。不知道哪位兄弟有这个经验或
者信息的，google了半天没找到合适的。多谢多谢！ |
|
l******u
发帖数: 2314 | 9 【原文请参见《纳米豆腐的世界》】
【http://nanotofu.blogspot.com/2007/12/exploration-of-swnt-cloning-continues.html】
Amplification of Single-Walled Carbon Nanotubes from Designed Seeds:
Separation of Nucleation and Growth
Douglas Ogrin, Robin E. Anderson, Ramon Colorado, Jr., Benji Maruyama, Mark
J. Pender, Valerie C. Moore, Sean T. Pheasant, Laura McJilton, Howard K.
Schmidt, Robert H. Hauge, W. Edward Billups, James M. Tour, Richard E.
Smalley, and Andrew R. Barron
J. Phys. Chem. C, 2007, 111 (48), 17804-17806 |
|
b**********a
发帖数: 62 | 10 hi, everyone
where i can buy RN continue education credit? tomorrow i have to turn it
in!!!!!!!!!!!!!!!!!!!!!!!急！急！急！急！急！急！
thanks |
|
y****y
发帖数: 275 | 11 我们需要买一个continuous centrifuge， 大型的有commercialized的，但是我们需要
体积和容量小的，可以fit进我们实验室和试验台上的。不知道哪位兄弟有这个经验或
者信息的，google了半天没找到合适的。多谢多谢！ |
|
|
|
w**********y
发帖数: 1691 | 14 AR(1) 对应的就是OU.
Columbia和Corolado大学都有一些人在做continuous ARMA,可以对应任意的ARMA(p,q) |
|
g******r
发帖数: 347 | 15 有人考过Finra continued eduction么
需要准备么？什么形式？ |
|
v*******g
发帖数: 334 | 16 Thanks, it's not for continuous data |
|
b*******e
发帖数: 3324 | 17 在做LOGISTIC REGRESSION 分析的时候，ORDINAL 的自变量可以当作CONTINUOUS 来处
理么，
非常感谢 |
|
j***3
发帖数: 142 | 18 if I have table like this:
1 1.234
2 1.657
3 1.564
4 2.343
..
,,
the first column is order information and the second column is value.
is there a way to sample all possible continuous subset of x row from the table?
thanks |
|
r********0
发帖数: 65 | 19 How to define your "continuous subset" here? |
|
j***3
发帖数: 142 | 20 thanks for the reply,
continuous set just means one block of rows from the table.
I was think if there are ways not use (or use less) loops because the
dataset is huge. and R is not efficient handling loop |
|
j***3
发帖数: 142 | 21 maybe I did not express myself clear enough,
what I need is a subsets that has continuous row number, the solution
rabbit1860 give is random row number.
the solution libra give is in SAS ? the syntax looks strange to me.
DaShagen, I think it is basically a sliding window of size x and step 1.
|
|
s*****n
发帖数: 2174 | 22 对, 类似的.
其实你说的, 一个categorical一个continuous的情况, 也一样可以这样理解.
比如说: 肺癌 ~ 吸烟 + 性别 + 吸烟*性别
可以解释为"当吸烟和男性这两个因素同时存在时, 肺癌几率大大增高"
这样解释, 也就无所谓连续还是离散变量了. interaction永远解释为在简单叠加
模型基础上的"修正". 这些修正, 用的是多个变量的"共同效应". |
|
t***r
发帖数: 157 | 23 how to find the distribution of the sum of discrete and continuous uniform variable
x~uniform(0,1)
y discrete uniform 0 with p, 1 with probability 1-p
how to find the distribution of x+y?
thanks |
|
b*******l
发帖数: 4 | 24 如果dependent variable 是 continuous, 除了用linear regression build model 外
。 还可以用那种regression build model. |
|
s**********l
发帖数: 395 | 25 Now for each categorical variable, it has 20 levels 1-20.
In order to use GLM, I need to convert more than 100 categorical variables
into continuous variables.
Who knows how to do this in SAS? Thanks. |
|
s**********l
发帖数: 395 | 26 Sorry, I should mention Genmod rather than GLM in SAS.
I think in Generalized liner model, if the dependent variable follows a
gamma distribution, the predictors can not be categorical variables, can
they?
There are totally 120 categorical variables and each of them have 20 levels.
Therefore, I tried to convert these categorical variables into continuous
variables so that I can build the model; however, I did not know how to do
so.
Who knows? Thanks. |
|
l*********s
发帖数: 5409 | 27 1. fitting with class variables is OK
2. if the categorical variables already have numeric formats, you don't need to
declare them to be continuous.
levels. |
|
n**********e
发帖数: 18 | 28 具体情况是这样：有1-10个因素，有两种评价方式A和B
A：给每个因素打分，最后得出总分A，是continuous的
B：有三个小分类c，d，e，每个分类有三个level（high，low，none）。根据1-3因素
判定c的level，4-6判定d，7-10判定e。综合c，d，e可得出B的level（high，low，
none）
问题是：A和B评出的结果是不是一致的？如果是，那么对于B的三个level，A的cut
points是什么？
请问一下用什么方法才能解决这两个问题？谢谢了！ |
|
t*********e
发帖数: 143 | 29 Suppose we have two sequence of data (x, y), there are a lot of data points.
How to fit a continuous monotonic piecewise linear spline using SAS? |
|
l**********8
发帖数: 305 | 30 for ordinal or continuous variables, may also determine if the
ln(odds) seems to be linearly related or not. Plot the logit of the group
means
vs the midpoint of the group. Will give an idea of whether to model as
linear, quadratic, or possibly just categorical |
|
S*******u
发帖数: 727 | 31 是这样的.
Object: Test whether age is related to the binary outcome(Coupon RedemptionY
/N)?
就是TEST 是否使用COUPON 是否与AGE 有关.
我不想把AGE 变成AGE GROUP( 18-28, 28-38, 39-49....),如果变成AGE GROUP, 我可
用CHI-SQUARE TEST.
但是我想用AGE 是 CONTINUOUS 的.比如(20,12, 22, 23.....60..)但是不知道该用哪
个TEST THE RELATED OR NOT RELATED? |
|
z****e
发帖数: 54598 | 32 【 以下文字转载自 JobHunting 讨论区 】
发信人: xmj http://www.zenofon.com/QHJRE, 信区: JobHunting
标 题: Re: MapR Technologies continue hiring a lot of positions
发信站: BBS 未名空间站 (Sat Jul 19 13:19:40 2014, 美东)
俺做bigdata5年多，这三家公司都研究过，简单说说供参考。
Cloudera成立早，有很多yahoo的老人在，骗了很多钱，目前以做service为主，比较领
先的是它的management tool，对hadoop的manage比其他的package要强。背后主要的支
持者是oracle和teradata，前段时间intel投资了。目前来看比较牛。他们自己搞了
impala，我的感觉有点不伦不类的。
Hortonworks是yahoo spinoff的，技术上来说，看看hadoop早年的code大概也知道是个
什么样水平。HDFS真心还不错，Mapreduce一般般了就。里面有很多以前做pig的人，目
前... 阅读全帖 |
|
E**********e
发帖数: 1736 | 33 【 以下文字转载自 Statistics 讨论区 】
发信人: ExpressoLove (MoneyForNothing), 信区: Statistics
标 题: PCA 可以用在mixture of continuous 和categorical variables
发信站: BBS 未名空间站 (Sun May 17 18:03:19 2015, 美东)
据我了解， pca用在continous variables 比较合理。categorical one怎计算
covariance matrix啊？ |
|
s*********a
发帖数: 2623 | 34 categorical 是covariance 咯？是不是应该用anova？如果你又有continuous 也有
categorical的话在SAS下用GLM咯？
你PCA是用在MATLAB里的？
我也不是很懂。不对的话大家多多打击 |
|
E**********e
发帖数: 1736 | 35 说到categorical variable， 一般已经是numerical categorical了（1,2,3，。。。
）。 textbook 好像很少讲到mixture的continuous 和 categorical variables。 事
实是很多时候modeling的时候， 都是mixture。 这种情况用pca来降维或者找出
significant的variabels是不是就有问题。
当然也许可以试correspendse analysis， 就是把continous variable group， 然后
用contigency table来找出关联。但是也很少说用了选significant variabels。
问这个问题是因为面试是碰到这个问题。 所以pca来选variables的话，好像不是那么
可信。 lasso也许是个更好方法。 |
|
w*******y
发帖数: 60932 | 36 Link:
http://shnoop.com/
I haven't handled this camera personally, but this is the lowest price by a
pretty good margin and Shnoop ships for free. The camera is very noteworthy
for being able to do 30 frames per second continuous shooting (!) and up to
1200 FPS video, although at 1200 FPS the resolution is very low. Most slow
mo camera cost thousands of dollars, mind you.
Here are some youtube videos taken with it. I have the big-daddy, bridge
camera brother of this, the FH-20, and I really like |
|
w*******y
发帖数: 60932 | 37 Antec NEO ECO 620C 620W Continuous Power ATX12V v2.3 / EPS12V 80 PLUS
Certified Active PFC Power Supply
code: EMCYWZP25
$20 rebate
|
|
|
|
|
g******y
发帖数: 2517 | 41 67% Off Calvin Klein Jeans Continual Chronograph Men's Quartz Watch K8717174
http://amzn.to/Hvsdc3 |
|
g******y
发帖数: 2517 | 42 亚马逊Deal of the Day: Waste King Legend Series Continuous-Feed Garbage
Disposal， 74% Off
http://amzn.to/SU0jVC |
|
c******7
发帖数: 1081 | 43 【 以下文字转载自 Stock 讨论区 】
发信人: NeverLearn (24K Bear - Got Silver?), 信区: Stock
标 题: Fed's POMO continues into Oct
发信站: BBS 未名空间站 (Wed Sep 29 01:41:55 2010, 美东)
Next three POMOs will be Sept 30, Oct 5 & 6. Adjust your short according
to their overt market rigging, bears.
http://www.newyorkfed.org/markets/tot_operation_schedule.html |
|
K****D
发帖数: 30533 | 44 【 以下文字转载自 Movie 讨论区 】
发信人: KennyD (|-==-|), 信区: Movie
标 题: The Box Office Weakness Continues
发信站: BBS 未名空间站 (Mon Jun 7 16:36:54 2010, 美东)
This coming weekend welcomes two new releases.
A-TEAM is looking at opening around 35m.
KARATE KID can probably do 25m.
At least finally there is something that can beat Shrek! |
|
m**k
发帖数: 18660 | 45 【 以下文字转载自 Lego 俱乐部 】
发信人: mark (花生，微爷远爷的爸爸), 信区: Lego
标 题: Friday lego - space continue..
发信站: BBS 未名空间站 (Fri Jan 21 10:05:24 2011, 美东)
最近娃们继续对space的兴趣。可能这东西，的确很cool?
我怎么记得我到小学高年级/初中才开始喜欢 飞碟探索什么的。lol |
|
a*****1
发帖数: 3817 | 46 THE BLOG
Why I Can No Longer Support Hillary Clinton
4 days ago
César Vargas Writer, director, advocate, strategist, cultural critic.
Founder of upliftt.com.
It took me a long time to write this. I had to dig deep into my being to
come up with these words. I’m recanting my endorsement of Hillary Clinton
for the presidency.
I’m aware of how vindictive Clintonians can be. I’m not speaking about the
Clintons themselves, but of those surrounding them. Perhaps the saying is
true: dime con quién andas... 阅读全帖 |
|
a*****1
发帖数: 3817 | 47 THE BLOG
Why I Can No Longer Support Hillary Clinton
4 days ago
César Vargas Writer, director, advocate, strategist, cultural critic.
Founder of upliftt.com.
It took me a long time to write this. I had to dig deep into my being to
come up with these words. I’m recanting my endorsement of Hillary Clinton
for the presidency.
I’m aware of how vindictive Clintonians can be. I’m not speaking about the
Clintons themselves, but of those surrounding them.
Perhaps the saying is true: dime con quién andas... 阅读全帖 |
|
a********9
发帖数: 3813 | 48 THE BLOG
Why I Can No Longer Support Hillary Clinton
4 days ago
César Vargas Writer, director, advocate, strategist, cultural critic.
Founder of upliftt.com.
It took me a long time to write this. I had to dig deep into my being to
come up with these words. I’m recanting my endorsement of Hillary Clinton
for the presidency.
I’m aware of how vindictive Clintonians can be. I’m not speaking about the
Clintons themselves, but of those surrounding them.
Perhaps the saying is true: dime con quién andas... 阅读全帖 |
|
a********9
发帖数: 3813 | 49 THE BLOG
Why I Can No Longer Support Hillary Clinton
4 days ago
César Vargas Writer, director, advocate, strategist, cultural critic.
Founder of upliftt.com.
It took me a long time to write this. I had to dig deep into my being to
come up with these words. I’m recanting my endorsement of Hillary Clinton
for the presidency.
I’m aware of how vindictive Clintonians can be. I’m not speaking about the
Clintons themselves, but of those surrounding them.
Perhaps the saying is true: dime con quién andas... 阅读全帖 |
|
a********9
发帖数: 3813 | 50 THE BLOG
Why I Can No Longer Support Hillary Clinton
4 days ago
César Vargas Writer, director, advocate, strategist, cultural critic.
Founder of upliftt.com.
It took me a long time to write this. I had to dig deep into my being to
come up with these words. I’m recanting my endorsement of Hillary Clinton
for the presidency.
I’m aware of how vindictive Clintonians can be. I’m not speaking about the
Clintons themselves, but of those surrounding them.
Perhaps the saying is true: dime con quién andas... 阅读全帖 |
|
