c******y
发帖数: 8796 | 1 我前年开了一个roth ira，然后前年和去年各contribution 几千块
没有withdraw，为啥收到 1099R 说我有 300多刀的taxable distribution 而且被
withhold了60多刀
一年都没动这个account，哪来的distribution？谢谢 |
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l*****g
发帖数: 654 | 2 turnover rate只是反映一个基金换股的情况，和持有者没有关系。（correct me if I
am wrong)
我的感觉，distribution很少，我没有vanguard small cap index，但是我有其他的
vanguad fund,我大概算了一下，每个季度的distribution只有0.5%左右
买mutual fund不需要为这点税收考虑买卖，如果真的在乎税收，应该用401等不交税的
账户买分红多的,用需要交税的账号买分红少。
税的大头，应该是long-term capital gain tax vs short-term capital gain tax.所
以应该尽量持有一年以上再卖。 |
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l*****g
发帖数: 654 | 3 我也想问一下，如果在distribution前卖掉，是不是就白持有2个月，错过了
distribution，那岂不是亏了？ |
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x*********n
发帖数: 100 | 4 去年12月的distribution是1.8%左右。去年的return是18%.今年大概30%了，所以以此
推算今年的12月distribution是3%左右.那我现在刚买就要交这个税，好像成了冤大头
了。
I |
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j********x
发帖数: 2330 | 5 Amazon这个公司
想开个小公司或者合伙创业，mobile device看上去很火，但是担心我也不是很熟悉行
业，担心受厂商控制，发展空间有限
distributed system很怀疑这么成熟的技术门类，是不是空间也很少？
我本身phd毕业，主要做wireless network和distributed system
高手前辈不吝赐教，多谢 |
|
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J*****a
发帖数: 4262 | 7 最近收到rocket feul的onsite，说是面的是 Software Engineer - Real Time/ Big
Data Distributed Systems position. 请问有前辈面过他家的“Real Time/ Big Data
Distributed Systems”组吗？
信里说共有六个人面试我，但是时间只是从10：00到14：30四个半小时，请问这一般有
几轮面试？其中几轮coding几轮设计？如果有更详细的信息比如题目类型更加感激不尽！
多谢！！ |
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O****L
发帖数: 3353 | 8 I made 60 hot delicious " steam buns" with meat and vegetable inside.
However, I don't know how to distribute them to everyone in a fast way,
although I know how to distribute them to you one by one. |
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m********8
发帖数: 332 | 9 看到很多产品上标注：Distributed by 某一个公司，这个公司是什么性质的公司，是
retail,wholesale 还是distribution? |
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b********y
发帖数: 5829 | 10 http://www.tradersnarrative.com/lowry-research-distribution-correction-ahead-3474.html
* market internals have deteriorated during this slow grind higher
* slow grind will devolve into a correction
* weakness in the Utility & Industrial sectors
* most relative strength in the Energy sector
* slightly higher upside volume but no concomitant gains
* this evidence of churning often leads to distribution
* breadth momentum: % of stocks trading above their 10 day moving
average
* although AD lines |
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a*****e
发帖数: 2503 | 11 用taxcut 填表。中间问道
for each year, enter the total distributions you received from
1. traditional or roth iras
2. 401(k), or other qualified retired plans
etc...
这里的distribution是我自己存进去的，还是公司match的，还是给的利息，还是什么
东西？
谢谢 |
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m******n
发帖数: 194 | 12 因为离开美国，把ROTH IRA里股票都卖了，然后把钱全部取出来了（early
distribution),
broker扣了30%的税。
distribution的总额（包括扣的30%税）小于 这些年contribution 的总额 （就是ROTH
IRA投
资总体是亏欠的，惭愧）
需要交penalty或者其他税么？ 要填哪些表格？
谢谢，美国税好麻烦啊。 |
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k*********8
发帖数: 861 | 13 收到1099, distribution code J, early distribution of Roth IRA. 我只取了本金
几千块，难道还要交税？不是说Roth IRA是税后收入，5年内取本金也不用交钱吗？谢
谢！ |
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H******e
发帖数: 767 | 14 > 我没有HSA distribution.
I guess you mean contribution? distribution = take money out from your HSA
account.
> 那我现在给HSA account里存$6450, 还能省税吗？
Not for your 2013 tax return. It will be counted as 2014 contribution (
reflected on your 2014 W2). |
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s*********a
发帖数: 418 | 15 turbotax有问你hsa distribution是什么code，然后是不是全部qualify medical
spending,你一定这里填错了
hsa qualifed distribution免税 |
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w********r
发帖数: 14958 | 16 【 以下文字转载自 CS 讨论区 】
发信人: withourcar (注意不是老ｉｄ＂没有车＂), 信区: CS
标 题: Poisson disk distribution
发信站: BBS 未名空间站 (Wed Nov 27 11:43:25 2013, 美东)
请问有人了解这方面数学分析的文章吗？
关于dispersion, variance, distribution方面的结论。 谢谢 |
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s***s
发帖数: 1301 | 17 我们现在需要对distribution server 硬件升级，但是我们又担心万一中间出问题，无
法恢复正常工作，然后需要重新reinitialize articles，而有些table很大的，重新
replication的话，需要很长时间 （6，7个小时），这是不允许的。这个distribution
server也不是cluster。 所以想请教有没有比较好的应急方式？
谢谢！ |
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l*********o
发帖数: 736 | 18 之前研究social network 最近老板准备往一些时髦网络技术转
准备研究social network对 contend distribution network的影响
具体还是用一些优化 图论的方法灌水
不知道contend distribution network还有没有啥研究价值？ |
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x****d
发帖数: 1766 | 19 What are you guys reading or suggest reading/learning for distributed
computing in java? I don't mean big data thing, but JEE.
Solr/Hadoop is using zookeeper. So I guess Zookeeper is a good starting
point. I looked into it a bit, didn't catch much info.
If I have to do something similar, what other options I have other than
using zookeeper to keep my config files in sync? I can think of using JMS/MQ
. Somebody says a look in ZEROmq, but that is something like protocal, to
build something useful,... 阅读全帖 |
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p*****2
发帖数: 21240 | 20 near real time足够了
go的distributed process好用吗
erlang现学肯定不成
akka做distributed不知道成熟度如何
其实我到觉得erlang可能最合适 |
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h******s
发帖数: 176 | 21 well, it depends. The popular options are:
1) MacTeX for OSX, which is essentially TeX Live 2007. See
http://tug.org/mactex/
2) MiKTeX is the best for Windows system.
proTeXt is an easy-to-install TeX distribution based on MiKTeX.
TeX Live is also a good choice. See
http://www.miktex.org/
2) teTeX was the de facto implement on Linux till Thomas Esser decided to
cease development of this distribution. He suggested user to join TeX Live
at
http://www.tug.org/texlive/
In conclusion, TeX Live might |
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h*******y
发帖数: 96 | 22 如果计算中需要用到normal distribution的quantile的话，会给表么，还是计算器上
可以算的，我用30xs，manual上没
找到可以算normal distribution cdf或者quantile的，谢谢！ |
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m********t
发帖数: 50 | 23 Matpower is not designed for distribution network,
The test case you are using is three phase unbalanced radial network, which
is usually classified as ill conditioned power flow case in transmission
power flow solver.
You should try OpenDSS, just google it, which is designed for distribution
network. |
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s*******w
发帖数: 8 | 24 Pn(n1)=N!pow(p, n1)*pow(q,N-n1)/(n1!*(N-n1)!), where p+q = 1
What's the physical meaning of these two assumptions respectively?
1. in the limit of large N (infinity) and large pN (i.e., p not very small)
which gives Gaussian distribution;
and
2. in the limist of large N (infinity) and small p (pN << N)
which gives Poisson distribution.
thanks. |
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z*****a
发帖数: 17 | 25 已知 一个probability distribution 可以用3个数来定义，（pessimistic,mode,
optimistic）, 怎样知道这个distribution 德mean and variance?
Thanks a lot. |
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v*c
发帖数: 42 | 26 suppose we know x_hat is aymptotic distributed with mean x and variance
sigma2.
here, x_hat is an estimator of x.
Now, we have integral (x_hat)dx, x from 0 to 1. Then how to obtain the
aymptotic distribution of this integral?
Thanks, |
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j********g
发帖数: 49 | 27 现在我有两组实验数据, 可以分别画出两组数据的cummulative distribution
function (CDF). 假设一组是X, 另一组是X+Y, X 是不要的那部分, 请问如何得到y
的distribution?
Y最终是要用于simulation的, 所以不一定要精确的distibution, 只要知道每个P(Y=y)
, 就可以了. |
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e****c
发帖数: 183 | 28 比如一个 N （0，alpha)。另一个N (x, beta), 但是这第二个distribution 只在s 和
t 之间。这两个distribution 加起来，是什么样子？ |
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b**********0
发帖数: 53 | 29 Suppose we know the distributions of X1, X2, ..., Xn, any suggesions on how
to compute the quantiles/distributions of X1+X2+...+Xn? Note that X1, X2, ..
., and Xn may be independent or dependent; they may or may not assume the
same pdfs (or pdfs of the same form, e.g., Gaussian).
It has been shown that this computation is NP-hard in general, so I wonder
if there is any effective pseudo-polynomial algorithm or approximate
algorithms for solving the problem? Any advice will be greatly appreciated. |
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d*******1
发帖数: 293 | 30 做一个monte carlo 模型, 遇到一个问题, 有两个变量, correlated, 如果都是noraml
distribution, 还好处理, 关键是要是一个是normal, 一个是cauchy distribution的
话, 该如何 sampling, 不知道各位有没有好的办法 |
|
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n******s
发帖数: 19 | 32 大家好，
请问如何求 Implied distribution，instead of assuming lognormal distribution
in BS formulas.
什么公式或者方法呢？
谢谢 |
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n******s
发帖数: 19 | 33 大家好，
请问如何求 Implied distribution，instead of assuming lognormal distribution
in BS formulas.
什么公式或者方法呢？
谢谢 |
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L*****k
发帖数: 327 | 34 如果X和Y是joint normal，那么这道题目很容易。在joint-normal下，condition
distribution还是normal，因此计算可以大大简化
如果joint不是normal，但是其他的给定分布，还是可以做的。只不过没有了condition distribution还是normal的这个特性，计算可能变难，很可能没有close form（可能某些指数分布族会简单些）
而如果joint的分布不告诉你，那就是题目有问题，没有joint，怎么可能求condition，那就是一个个joke题目 |
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y***s
发帖数: 23 | 35 Pr(min{B_t,0a)=Pr(min{-B_t,0a)(B_t and -B_t has the same
distribution)
=Pr(-max{B_t,0a)
=Pr(max{B_t,0
=1-Pr(max{B_t,0-a)
1-exp(-2a^2) by 3.3' in the paper
The pdf of distribution of argmin{ Bt, t in [0, 1] } is
(-4a)exp(-2a^2)
where a is negative
by taking derivative of 1-[1-exp(-2a^2)] with respect to a. |
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c**********e
发帖数: 2007 | 36 Suppose I have a continuous variable X and a frequency variable Y. I fit a
model by SAS GENMOD. The model says that Y has a negative binomial
distribution with mean a+bX (or exp(a+bX)).
Specifically, I have a sequence X1, X2, ..., Xn and Y1, Y2, ..., Yn. How to
test Yi's follow negative binomial distributions with mean a+bXi (or exp(a+
bXi))?
Anybody has an idea? Thanks a ton. |
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k*****n
发帖数: 117 | 37 Xt and Yt are jointly normal and independent
So you can work out distribution of Dt = Xt^2 + Yt^2
Now you can follow the same argument of calculating hitting time
distribution of a Brownian motion
P(T < t ) = 2P( Dt > 1 ) = ... |
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l******n
发帖数: 9344 | 38 太多数据了，怕你最后做test，无论啥distribution都会悲剧的
先考虑怎么sample吧
distribution |
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L*******t
发帖数: 2385 | 39 这是高频吧？而且是很多年的？
我记得Gene Stanley好像做个很多power law的东西，如果记忆没有混乱，似乎就是说
不同时间尺度上的distribution的，我觉得可以从这儿入手。
先sample和fit低频的数据，然后再用power law。
distribution |
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s**********e
发帖数: 16 | 40 OK. Suppose I calculated the moments, it is right skew distribution with
two peaks, can you tell me what kind of distribution it is? |
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s**********e
发帖数: 16 | 41 OK. Suppose I calculated the moments, it is right skew distribution with
two peaks, can you tell me what kind of distribution it is? |
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s**********e
发帖数: 16 | 42 Just answer my question, "what distribution it is". Tell me the "name" of
that distribution.
about
data |
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l*******l
发帖数: 204 | 43 Kolmogorov-Smirnov Test.
However statistical test do NOT prove that the distribution fits. All it can
do is to prove that the distribution does NOT fit. |
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y**t
发帖数: 205 | 44 If you cannot find a good test to check which distribution is better, you
can either compare CDF or moments.
Derive your theory CDF/moments then compare with empirical CDF/moments.
distribution) hard to prove,
10^4).
our target
data, to say our |
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d*******n
发帖数: 216 | 45 If two distributions have the same expectation and variance, do they have
the same cumulative distribution function? My hunch is not, but cannot
think of an example.( I know the density functions can be different, for
example, at finitely countable points, but I want to know about more general
cases.)
I'd appreciate any help. Thanks! |
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s*****r
发帖数: 11 | 46 举个例子吧。
要调查全国人民的平均身高，你可以随机抽取1000人然后取个均值。重复这个过程N次
你就可以得到the sampling distribution of 平均身高。
根据CLT，这个statistic应该是个normal distribution. |
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m********h
发帖数: 60 | 47 对于bivariate normal distribution,我们可以用 probbnrm.
但是想计算 probability of 3-dimension multivariate normal distribution，不知
道SAS里面有没有function可以用的？或者有什么办法可以计算的用SAS。
多谢！ |
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i*****r
发帖数: 24 | 48 thanks for replying. the question is this, i explained it wrongly, yesterda
y.
" A series of 25 measurements on a radioactive sample provides a mean of 950
and value of 17,526 for sum(xi-r)^2(for i=1 to N), Do the data follow norma
l distribution?"
Ans: use formula, chi^2=18.5. look at table p between 0.9 to
0.5. so is Poisson Distribution. |
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l***o
发帖数: 194 | 49 I want to simulate a data matrix using the 3PL and Generalized partial
credit model.
I am wondering whether anyone knows the distribution of the a, b and c
parameter of the 3PL and their range.
also the distribution of a and b and range of the generalize partial credit
model.
if anyone can give me some help on this, I will really appraciated.
mimi |
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d*******1
发帖数: 854 | 50 有一堆sample data,做了个histogram, 很像normal distribution, 但是好像两边的
tail不太平衡。 请问选什么distribution比较好呢？ 怎样决定什么样的kernel比较
合适呢？ |
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