由买买提看人间百态

topics

全部话题 - 话题: variate
首页 上页 1 2 3 4 5 6 7 8 9 10 下页 末页 (共10页)
z**********g
发帖数: 16
1
Repulsion Particle Hypothesis

: Zhuang Yilong
Shanghai Institute of Science & Technology Management
Jiading District of Shanghai, 201800, China

Abstract: The theory of “ Repulsion Particle Hypothesis” is a new theory
of matter interactions. In contrast to Newtons universal gravitation that
the apple drops from the tree, this hypothesis can be called the universal
repulsion theory tha... 阅读全帖
f*********e
发帖数: 1144
2
来自主题: Statistics版 - 火烧那什么了。。。。急问GLMM
Backgroud:
GLMM model: y = a + bX + cZ + e
bX: fixed effect (between-group variations: control vs treatment)
cZ: random effect (within-group variations)
Dist: poisson
===========================================================================
Quesetion 1): I have two levels of within-group variations for random
effects, specifically: biological variations and technicl variations. How do
I incorporate these two levels into one single random effect term? I am
using "glmer" from R-programming
Quest... 阅读全帖
k**0
发帖数: 19737
3
来自主题: GunsAndGears版 - 转贴:避免使用180gr .40 S&W
.40SW口径的炸膛事故很多,看到一篇相关好帖,转过来大家看看:
Why the 180gr Bullet is a Bad Choice for .40 S&W
The original design of the .40S&W cartridge called for a one hundred and
eighty grain (180gr) bullet pushed down a barrel with a 1-in-16 twist to a
muzzle velocity between 950 and 980 feet per second (fps). This matched the
"FBI Lite" or "medium velocity" 10mm loads that were becoming popular at
that time.
However, in the years that followed, experience and experiment have shown
that the standard 180gr bullet weigh... 阅读全帖
T*********e
发帖数: 39815
4
来自主题: Outdoors版 - 周末爬了Monkey Face
Via West Face Variation route, five pitches:
Pitch 1: trad 5.7
Pitch 2: trad 5.8 (direct variation)
Pitch 3: A1
Pitch 4: Sports 5.7
Pitch 5: 5.5R
Pitch 4 和5很短, 可以连在一起爬. 我lead了所有的pitch.
本想周六爬的, 早晨10点pioneer route和west face variation两条线下面都有至少2
组在等着, 两条路线在第三个pitch汇合, 是一个A1的aid climbing, 最耽误时间的地
方. 算了一下时间肯定来不及了,只好改成周日爬.
周日早晨5点半起, 8点我和richard冲到了west face variation下面, 我们是第一组,
8点半开爬, 刚开始两个pitch一切顺利, 到了pitch 3的时候, 发现有另一队从pioneer
route过来的,赶在了我们前面, 只好等, 后面几个pitch都在他们后面等着, 一直到下
午2点登顶.
我自己爬的照片都在别人相机上,还没拿到.
p**********t
发帖数: 2636
5
来自主题: Outdoors版 - Red Rocks Christmas to New Year
I've only been there three times. I bet you'll spend a lot of time at Oak
Creek Canyon. Solar Slab (and many of its variations, including the 5.9
chimney variation, called some book I think) are must-do. The original route
is 11-pitch 5.6, and lots of its variations are nice too. We did the
Sunflower variation (5.9) and liked it. Use the gulley repel. Don't try to
repel Johney Vegas or your rope will get seriously stuck.
Brass Wall is very nice and soaks in the sun. It gets some 1-2 pitch stuffs... 阅读全帖
y***r
发帖数: 1845
6
来自主题: Running版 - 再论MAF
牛啊。
感情500多页的大书就讲了一个计算MAF的公式……
不过我觉得书里没太讲具体训练问题,而且感觉Dr. Maffetone作为医生,最关心的是
健康,至于比赛成绩什么的都是次要的。
要批判大书的可以读一下人家的总结,缺点说的很到位:
* The 180 formula does NOT take into account individual variations in heart
rate stroke volume or muscle physiology for different sports. Maffetone does
not consider maximum heart rate nor resting heart rate to be significant.
Instead, his formulas are purely a function of age and a few modifiers that
have nothing to do with your heart's individual characteristics. This seems
t... 阅读全帖
a*******o
发帖数: 699
7
来自主题: WaterWorld版 - water
How to SUCCESSFULLY teach a baby to sleep - 3rd ed.
Group Owner
BabeGirlMom · Pass a Note!
Posted 02/11/2009
http://community.babycenter.com/post/a5417415/how_to_successful
1) WHY?
Sleep training is NOT a fix-all-solution to all sleep problems. If your baby
is not sleeping well, there are usually good reasons why.
The most common reasons are:
1) Overtiredness. All sleep problems are at least partly due to
overtiredness. Some problems my have been initiated by illness, teething, or
phases; but be... 阅读全帖
c******o
发帖数: 1184
8
来自主题: Joke版 - 高引用率的古典音乐旋律
"Gott erhalte Franz den Kaiser" (English: God Save Emperor Francis) is an
anthem to Francis II, Emperor of the Holy Roman Empire and later of Austria.
The lyrics were by Lorenz Leopold Haschka (1749–1827), and the melody by
Joseph Haydn. It is sometimes called the "Kaiserhymne" (Emperor's Hymn).
Haydn's tune has since been widely employed in other contexts: in works of
classical music, in Christian hymns, in alma maters, and as the tune of the
"Deutschlandlied", the national anthem of Germany.
L... 阅读全帖
l**********t
发帖数: 5754
9
来自主题: Belief版 - littletshirt 的拙劣謊言 (转载)
Contex to the lengthy discussion: Eloihim (真神)'s misunderstanding of the "
cuause" vs. the outcome.
IHMO, the key difference between the "evolution theory" and Christian belief
is the casual factor of "variation/mutation" as observed in fossil records
& other scientific discoveries. In Darwin's theory, these cause of these "
mutation/variation" is "random" (intractable/unknown), vs. Christian belief
in design/guidance from God.
So these two words ("random" vs. "mutation/varition") are the key c... 阅读全帖
E*****m
发帖数: 25615
10
来自主题: TrustInJesus版 - 转一篇关于眼睛的进化~
http://musingsofscience.wordpress.com/2011/01/22/evolution-of-t
Their simulation took 1,829 steps to evolve the eye when a change in the
magnitude of something (such as the refractive index, or in the thickness of
the transparent layer) equalled 1%. When a change in the order of magnitude
equalled 0.005% the simulation took 363,992 steps. The step numbers are
arbitrary; there needs to be some definite quantifiable unit of magnitude,
and that meant looking to real genetic change.
N&L postulated t... 阅读全帖
l**********t
发帖数: 5754
11
来自主题: TrustInJesus版 - 請問littletshirt 讀的是哪本進化論?
In this "TrustInJesus" board, "evolution theory" is sometimes (per suggestion from TheRinger ) brought up by non-believers to challenge the Christian Belief ( design/controlled process of
creation of the universe with intervention & guidance).
IMHO, the key difference between the "evolution theory" and Christian belief
is the casual factor of "variation/mutation" as observed in fossil records
& other scientific discoveries. In Darwin's theory, these cause of these "
mutation/variation" is "rand... 阅读全帖
J*****3
发帖数: 4298
12
笑死我了,还来玩黑白颠倒的吗?
我给你全文吧,这么撒谎的话,是耶稣教的吗?撒谎神不喜悦
这篇文章是基督教手册用来歪曲人类进化不成立的,是JAMES给我了文章的一个LINK,但是文章看不全,我根据作者名字找到了全文,也读了,发现,文章根本没有说进化不成立,他们断章取义,黑白颠倒地撒谎。我BS这种恶心的行为。
“5、大概在97年,一个著名的非基督徒考古学家,在非洲发现的所谓人类化石,把一
直以来公认的人类进化顺序,猿人——直立人——能人——智人,给彻底推翻了。目前
人类进化链条重新归零,变为空白。”
原文
http://news.nationalgeographic.com/news/2010/05/100506-science-
翻译:
“Even if the new result doesn't quite settle the debate about whether
Neandertals mixed with modern humans, it does underscore how different they
were from our own lineage. And t... 阅读全帖
J*****3
发帖数: 4298
13
来自主题: TrustInJesus版 - 给茄子 - 达尔文和他改变的世界
纪念查尔斯•达尔文诞辰200周年
作者简介:龙漫远,美国芝加哥大学生态与演化学系终身教授,北京大学生物信息中心
长江学者讲座教授,主要从事遗传学与演化论研究;陈振夏,北京大学生物信息中心博
士研究生, 主要研究兴趣是基因演化和生物信息学。
一千年前的中原,凡有水井处,皆唱柳词;今天的世界,凡有科学之处,皆说达尔文。
http://www.plob.org/2011/12/14/971.html
一 超越时空界限与学科藩篱
1809年2月12日,查尔斯·达尔文(Charles Robert Darwin)出生在英国什罗普郡的历
史名城什鲁斯伯里(Shrewsbury)。1859年11月24日,他的不朽名著《物种起源》出版
,一时洛阳纸贵而影响历久不衰。从他的家乡到世界各地,不同信仰的人们或欢呼,或
沉思,或惊愕,或暴怒,谈论的中心议题就是以自然选择理论为基础的演化学说(
Evolution based on the Theory of Natural Selection)。200年后的今天,世界上
许多国家和地区的学者和民众都投入了纪念这位科学伟人的盛事:英国、法国、德国、
... 阅读全帖
B*********e
发帖数: 254
14
来自主题: TrustInJesus版 - the Story of the Adulteress in John 8
Bible Research > Textual Criticism > Story of the Adulteress
Concerning the Story of the Adulteress
in the Eighth Chapter of John
Biblical scholars are nearly all agreed that the Story of the Adulteress (al
so known as the Pericope Adulterae or the Pericope de Adultera) usually prin
ted in Bibles as John 7:53-8:11 is a later addition to the Gospel. On this p
age I present some extended quotations from scholarly works that explain the
reasons for this judgment. On another page I give an extract f... 阅读全帖
s******a
发帖数: 472
15
http://www.cell.com/molecular-cell/fulltext/S1097-2765(11)00331
Fifty Years after Jacob and Monod: What Are the Unanswered Questions in Molecular Biology?
=====================================================================
Tomorrow's Molecular Biology
Marc W. Kirschner
Harvard University
Today, the term molecular biology has a rather prosaic sound. After all,
there is little in contemporary biology that isn't molecular. It's hard to
remember that 50 years ago, molecular biology was distinctly ... 阅读全帖
c*********r
发帖数: 1312
16
来自主题: Biology版 - 问个人基因组测序的问题
这个问题我也很感兴趣,期待版上高人回答。
我的理解,人跟人之间的基因组的差异还是有一些,尤其是病人的话,大家肯定想找出
差异。如果简单的把序列map到reference genome上边,有些差异比如SNP,小的indel
还是可以找得到,但是很多复杂的差异,大片段的indel、invertion什么的,也许就不
太容易找到了。
这里有篇很好的2015年的nature review:Genetic variation and the de novo
assembly of human genomes
“Short-read massively parallel sequencing has revolutionized our ability to
discover genetic variation but is insufficient to generate high-quality
genome assemblies or resolve most structural variation. Full resolution of
variation is only guaran... 阅读全帖
s******g
发帖数: 2
17
来自主题: EE版 - about monte carlo analysis
You need use mismatch instead of process variation in your statistical block.
Process variation will apply the variation to all devices.
Mismatch apply different variation for each instance.
h******y
发帖数: 315
18
来自主题: EE版 - hspice求助
比如说,
一个参数需要global variation A,
同时还需要local variation B,
另外还需要variation C, 而C是建立在A+B的基础上的一个函数,既C=f(A+B),
最后总的variation 是A+B+C
我的问题是如何利用A+B来定义C,不知道怎么把delta(A) 和 delta(B)都赋给 C,好像
global 和 local 是各自独立的
以上均为正态分布
多谢!!!
l****o
发帖数: 2909
19
1. Mishra SK, Wang SY, Lai KK, Explicitly B-preinvex fuzzy mappings,
INTERNATIONAL JOURNAL OF COMPUTER MATHEMATICS , 83 (1): 39-47 JAN 2006.
2. Lean Yu, Shouyang Wang, K.K. Lai, An Integrated Data Preparation Scheme
for Neural Network Data Analysis, IEEE Transactions on Knowledge and Data
Engineering, 18, pp.1-13, 2006.
3. Kin Keung Lai, Lean Yu, Shouyang Wang, Multi-agent Web Text Mining on the
Grid for Enterprise Decision Support, Lecture Notes in Computer Science,
3842, pp. 540 - 544, 2006.
4... 阅读全帖
s********g
发帖数: 889
20
来自主题: Statistics版 - two-way anova 的F-value 的意义。
p值是这样的
Df Sum Sq Mean Sq F value Pr(>F)
Agg 2 0.218400 0.109200 115.6235 4.775e-13 ***
Mix 3 0.056322 0.018774 19.8784 1.077e-06 ***
Agg:Mix 6 0.013911 0.002319 2.4549 0.05402 .
Residuals 24 0.022667 0.000944
我对F的理解是这样的,某个factor的F就是有多大比例的研究对象的variation可以用
这个参数的variation来解释。从这个ANOVA的结果来看,mix的variation和residual的
variation之差2.45倍。就算忽略这个mix 的影响,整体上的误差也不会很大,所以
aggregate对研究对象的影响更大,而且比mix大得多。
我统计学的不好,说的不对见笑了。
z***x
发帖数: 155
21
来自主题: Statistics版 - 问个统计的问题
technique triplicates 应该取平均值,因为它的variation来自于测量误差,不能算是
真实的生物个体的variation. 而biological triplicates就不一样了, 它的variation
应该反映的是真实的biological variation.所以你这个情况应该考虑的是n=3
s**********8
发帖数: 25265
22
来自主题: MedicalDevice版 - six sigma
Six Sigma
From Wikipedia, the free encyclopediaJump to: navigation, search
Not to be confused with Sigma 6.
The often-used Six Sigma symbol.Part of a series of articles on
Industry
Manufacturing methods
Batch production • Job production
Continuous production
Improvement methods
LM • TPM • QRM • VDM
TOC • Six Sigma • RCM
Information & communication
ISA-88 • ISA-95 • ERP
SAP • IEC 62264 • B2MML
Process control
PLC • DCS
Six Sigma is... 阅读全帖
h*********r
发帖数: 650
23
来自主题: _Climbing版 - Routes of Mt. Whitney
http://www.summitpost.com/mountains/mountain_link.pl/mountain_id/45
Kittyvvang, do you guys use Mountaineer's Route last time?
Route Name Difficulty
Cardiovascular Seizure III 5.10
East Buttress III 5.7
East Face III 5.6
Direct Crack Variation 5.8
McKusky Variation 5.6
Shaky-Leg Crack Variation 5.7
Ortenburger Variation ?
Dir
f****r
发帖数: 5118
24
懂信号处理的帮忙分析一下 Wow Signal,俺以前懂,现在虾米了
这个东西说不定正往地球飞过来呢
http://en.wikipedia.org/wiki/Wow!_signal
The Wow! signal was a strong narrowband radio signal detected by Dr. Jerry R
. Ehman on August 15, 1977, while working on a SETI project at The Big Ear
radio telescope of The Ohio State University.[1] The signal bore expected
hallmarks of potential non-terrestrial and non-solar system origin. It
lasted for the full 72 second duration that Big Ear observed it, but has
not been detected again. Much attenti... 阅读全帖
K**********n
发帖数: 1197
25

跟这帮自称理科的文科生物wsn实在纠缠不清楚。给丫们上点洋大人自己的说法吧,而
且都是学术圈的,已有reference一堆,其中一份是著名的兰德公司的报告。
另外,美国和澳洲已立法限制使用脑波扫描仪,拿脑波扫描仪扫本国公民已是联邦法的
重罪。不过这个比较难的是你无法证实谁接收了你的脑信号。所以立了法跟没立一个样。
Remote Mind Control Technology

Reprinted from SECRET AND SUPPRESSED: BANNED IDEAS AND HIDDEN
HISTORY, edited by Jim Keith, $12.95, available from
1-800-680-INET.
There had been an ongoing controversy over health effects of electromagnetic
fields (EMF) for years (e.g., extremely low frequency radiation and the
Navy's Project Sea... 阅读全帖
l*****9
发帖数: 9501
26
【 以下文字转载自 USANews 讨论区 】
发信人: lqm1989 (Jeremy Lin), 信区: USANews
标 题: The Myth of Health Care's Free Market By David Cay Johnston
发信站: BBS 未名空间站 (Mon Jan 6 00:33:29 2014, 美东)
The Myth of Health Care's Free Market
By David Cay Johnston / January 03 2014 1:05 PM
Ever wonder why an appendectomy costs $8,000 in one place and $29,000
elsewhere? REUTERS/Jim Bourg
Has it ever occurred to you to negotiate with the pilot of the plane you
just boarded about her pay?
Assuming the pilot was willing to tak... 阅读全帖
d*****4
发帖数: 6237
27
来自主题: Military版 - 其实白人中很多人也很左的
This quotation is frequently but mistakenly attributed to Churchill.
It is anyway unlikely that Churchill would subscribe to this
philosophy: He was a swashbuckling soldier at 20, and a Conservative
member of Parliament at 25. A couple of years later he switched to the
Liberal Party (which was not liberal in the modern sense), and later
went back to the Conservatives.
The phrase originated with Francois Guisot (1787-1874): "Not to be a
republican at twenty is proof of want of heart; to be one at... 阅读全帖
W*****B
发帖数: 4796
28
看看这篇文章。有什么启发呢?这个研究有意义吗?有没有把种族干扰因素排除?
Analytical journalism in words and graphics from The New York Times. Sign up
for The Upshot newsletter.
Detailed New National Maps Show How Neighborhoods Shape Children for Life
Some places lift children out of poverty. Others trap them there. Now cities
are trying to do something about the difference.
Whatever Distinguishes a Good Neighborhood Can Be Invisible.
↗ Neighborhoods Can Lift Kids Up or Hold Them Back. Cities Now Know
Which Are Which.
SEATTLE — The... 阅读全帖
z**********e
发帖数: 22064
29
来自主题: Military2版 - 抗美援朝经验总结:美制步枪
二战中美国兵因为这个被打死的很多,美国兵对这个怨声载道。
还有,这个跟人多人少有关系吗?
其实,就是拉枪栓的声音,都不这么危险:至少它不告诉对方,我没子弹了。
查到了这个,在韩战中,美军采用“双枪制”:两人配合,一个打,一个压满子弹等着
;等到“砰”一声弹夹弹出,对方露头时,压满子弹的那个就正好开火。
http://thefiringline.com/forums/archive/index.php?t-106892.html
PDAView Full Version : Did the Garand`s "ping" get GIs killed?
----------------------------------------------------------------------------
----
FatelvisMarch 28, 2002, 07:51 PM
I once heard, that in close-up fighting, (I believe in the South Pacific),
that in a stalemate cover situa... 阅读全帖
J*V
发帖数: 3150
30
【 以下文字转载自 USANews 讨论区 】
发信人: lqm1989 (Jeremy Lin), 信区: USANews
标 题: The Myth of Health Care's Free Market By David Cay Johnston
发信站: BBS 未名空间站 (Mon Jan 6 00:33:29 2014, 美东)
The Myth of Health Care's Free Market
By David Cay Johnston / January 03 2014 1:05 PM
Ever wonder why an appendectomy costs $8,000 in one place and $29,000
elsewhere? REUTERS/Jim Bourg
Has it ever occurred to you to negotiate with the pilot of the plane you
just boarded about her pay?
Assuming the pilot was willing to take bi... 阅读全帖
l*****9
发帖数: 9501
31
The Myth of Health Care's Free Market
By David Cay Johnston / January 03 2014 1:05 PM
Ever wonder why an appendectomy costs $8,000 in one place and $29,000
elsewhere? REUTERS/Jim Bourg
Has it ever occurred to you to negotiate with the pilot of the plane you
just boarded about her pay?
Assuming the pilot was willing to take bids for her services, would you have
any idea of how to evaluate the worth of that particular pilot compared to
anyone else who might be at the controls? How long would it ... 阅读全帖
j******f
发帖数: 768
32
来自主题: ebiz版 - AMAZON Listing issues
我们在AMAZON的ELECTRONIC上面有LISTING,很多产品有很多的类同,有些只有颜色的
不同,一般来说,ELECTRONIC CATEGORY 没有VARIATION 的选项,但是现在很多的卖家
能够CREATE VARIATION,像下面的LISTING:
http://www.amazon.com/Charging-Uspeed-Backward-Compatible-Warra
不知道各位大牛有没有知道怎么样才能在ELECTRONIC CATEGORY里,能够CREATE
VARIATION。如果能够告知其中的方法,定有重谢。
j******f
发帖数: 768
33
来自主题: ebiz版 - AMAZON Listing issues
我们在AMAZON的ELECTRONIC上面有LISTING,很多产品有很多的类同,有些只有颜色的
不同,一般来说,ELECTRONIC CATEGORY 没有VARIATION 的选项,但是现在很多的卖家
能够CREATE VARIATION,像下面的LISTING:
http://www.amazon.com/Charging-Uspeed-Backward-Compatible-Warra
不知道各位大牛有没有知道怎么样才能在ELECTRONIC CATEGORY里,能够CREATE
VARIATION。如果能够告知其中的方法,定有重谢。
D**********s
发帖数: 3139
34
来自主题: HiFi版 - 能推荐一个$400左右的DAC么
音量控制对音质的影响,以前有一篇note写得不错,我找了半天才找到,其实还有用变
压器的方法,不过dac这块最保真的方法就是保持位深和标准输出电平,音量控制交给
前级和功放去管就好了,终究绕不过模拟放大这一关的。
Volume Control Technologies
Newsletter Edition:
July 2009 Issue
With the introduction of Benchmark’s HDR-VC™ (High Dynamic Range
Volume Control), many audio enthusiasts are taking another look at volume
control methods. What are the differences between the different volume
control topologies? Is one sonically superior, and why?
The important qualities to consider with respect to volum... 阅读全帖
l****3
发帖数: 150
35
来自主题: JobHunting版 - 拼写检查的变种
貌似穷举edit distance是1的所有variation和edit distance是2的所有variations.你
给的link里面的文章说edit distance是2的就可以cover98%以上的情况了.然后可以对
每种variation到dictionary里面去找.这样时间上应该比遍历整个dictionary快

if
before
P**********c
发帖数: 3417
36
最好的几家公司是可以给到100k, 但是肯定不是平均了。老中总体上negotiate还是不
够,感觉大家master, PhD跟小本拿的股票也差不多,就是base稍微高点。
From Quora.
How much does Google pay a new grad software engineer?Edit
If it varies, what factors into it?Edit
Comment • Repost • Wiki • Options • Redirect
Question

Anon User
4 votes
I start in the summer of 2012. I was offered $100k in base salary, $7k
signing bonus, and RSUs worth $150k.
Comment • Repost • Thank • Jan 25, 2012
How much does Facebook pay a new grad ... 阅读全帖
m**********g
发帖数: 2661
37
Check here
http://www.elitecountertops.com/learning-center/quartz-vs-grani
Quartz Versus Granite Countertop
On first glance, every countertop looks the same. There may be different
colors and different characteristics, but if you are planning a remodeling
project you should be familiar with the differences between quartz vs
granite counter tops. The two materials may look strikingly similar, but
there are key differences that should be taken in to consideration. The
purpose of this article is to... 阅读全帖
F***Q
发帖数: 6599
38
来自主题: Living版 - 问电脑高手一个问题

her.
how
only a few lines in perl:
#### BEGIN OF readit.pl SCRIPT ####
#!/usr/bin/perl
require("variation.pl");
@words=split(/[\s,.;:]+/,join(/ /,<>));
print join(" ",map {defined($V{$_})?$V{$_}:$_} @words);
#### END OF readit.pl SCRIPT ####
#### BEGIN OF variations.pl SCRIPT ####
%V={};
$V{'sitting'}='sit';
$V{'looked'}='look';
## you can add more
#### END OF variations.pl SCRIPT ####
to run it
perl readit.pl < text.txt
you get:
He look at the girl sit next to me then he realized that he love... 阅读全帖
a*****g
发帖数: 19398
39
一个美国学生每年投入的经费(6k5~20k美金)
U.S. states’ education spending averaged $10,700 per pupil in 2013,
according to the U.S. Census Bureau, but that average masked a wide
variation, ranging from $6,555 per pupil in Utah to $19,818 in New York.
There’s an even larger range separating the lowest- and highest-spending of
the nation’s largest 100 school districts: At the low end is Jordan, Utah,
at $5,708 per student; at the high end is Boston, Mass., at $20,502.
Part of the variation is due to the huge diffe... 阅读全帖
Y********d
发帖数: 1478
40
如果 outliers 太多更加justify用non-parametric regression,调整给outliers的
weight就好。
均匀分布?有分布就有variation,有variation就有story可以讲。我做的这行,就怕
没有variation,然后仰天长叹!
a*****g
发帖数: 19398
41
一个美国学生每年投入的经费(6k5~20k美金)
U.S. states’ education spending averaged $10,700 per pupil in 2013,
according to the U.S. Census Bureau, but that average masked a wide
variation, ranging from $6,555 per pupil in Utah to $19,818 in New York.
There’s an even larger range separating the lowest- and highest-spending of
the nation’s largest 100 school districts: At the low end is Jordan, Utah,
at $5,708 per student; at the high end is Boston, Mass., at $20,502.
Part of the variation is due to the huge diffe... 阅读全帖
Y********d
发帖数: 1478
42
理论上,估计参数要么用cross-individual或者用over-time的variation。单个大活人
,用足够长的over-time的variation也是可以的,比如based on several year's
daily observation。
当然,我这个也是强词夺理了,因为目前除了高频的金融数据,基本上估计和人有关的
参数,还是主要靠cross-individual的variation。
所以你的问题也是valid,就是估计的参数也就是从一个sample里出来的,怎么apply到
个体?好像目前的做法是假定整个sample的参数都一样,给个体一个误差项,误差项越
小,模型的预测和指导的意义越大。但是有的时候误差项还真挺大的,而一个人就活一
辈子,怎么办呢?
看来还真是一个好问题,统计模型到底对个体有没有意义?
j*****8
发帖数: 12
43
I Have Made Significant and Internationally Recognized Scientific
Contributions to the Area of Medical Genetics, and to the Field of Genetics
of Mental Diseases in Particular
1. My significant contributions to XXXX at The University of Chicago (
Feb. 2005~Jun. 2008)
As Dr. GGGG stated, “It is well known that BBBBB disorder is one of
the most costly psychiatric conditions. It ranks among the top ten in
disability in the World Health Organization’s Global Burden of Disease.
More than 2... 阅读全帖
t******l
发帖数: 10908
44
除非有能根据高手的棋谱生成几百万 variation 的 variation 狗。
不过 dcnn 靠 fitting 不靠逻辑,没有 induction 的能力,估计生成
variation 不容易。当然 AI 能做到这样已经不错了。
但问题还是傻子堆里靠数量堆出来的天才,一般都不太稳定,后期成为疯子
的概率比较大。其实人类社会也差不多。
h****a
发帖数: 5058
45
来自主题: Pingpong版 - 奔两段
I thought he likes that rubber.
Well, I am thinking differently. Speed is important, but not that important
when comparing consistency. There is always some one can block your loop. No
one can guarantee his loop is unstoppable. It is all about the variation of
speed ,spin and place. Ppl like you block it back, which gives me those
variation as well. How well I can do after that is the main question. How
well you can do after my second return which brings more variation is
another question. Loopi
J********9
发帖数: 36508
46
☆─────────────────────────────────────☆
solostar (传说) 于 (Sun Dec 20 22:39:01 2009, 美东) 提到:
快回国了,和学校的球友录像留念,彼此球路都很熟
大家看看有关直拍横打的问题吧,最近板上好像有横打大牛
轻拍 :)
http://www.youtube.com/watch?v=zNtPL94EXIU
http://www.youtube.com/watch?v=I5P3_Fmz6Hk
☆─────────────────────────────────────☆
Jingqg1979 (qi'e&pan) 于 (Tue Sep 7 16:54:48 2010, 美东) 提到:
两个都是直板
深色衣服的正手好一点 冲起来solostar还是下风
solostar的横打牛一点 速度快 还能冲两角
两人正手防守都有一点反手推的影子 非正手的拍型 不过如果能改正过来用正手拍型防
守 基本就可以正手做动作 做进攻性防守了 再牛一点的 就能反拉了 呵呵

快回国了,和学校的球友录像留念,彼此球路... 阅读全帖
b****a
发帖数: 300
47
1. The Bounce
Before even beginning the testing of the ball I performed a bounce test to
compare the bounce of the DHS 3 star plastic ball to the Butterfly 3 Star
Celluloid ball. The plastic ball has a lower bounce peak and is less
responsive on the table surface, this is because of the slightly larger size
of the new ball and also it's plastic material composition.
2. The Shape/Roundness
I also did a spin test with both balls. With the prototype plastic balls
there were a lot of issues with how... 阅读全帖
M*****e
发帖数: 1827
48
i think it's different interpretation of music.
i prefer SSQQ
similar discussion can apply to several figues. for example
waltz chasse, syllabus 12&3, variation 123&
waltz fallaway reverse, syllabus 12&3 (not sure), variation 1&23
foxtrot fallaway reverse, syllabus SQ&Q, variation QQQ(prolong this Q)Q

,
l****z
发帖数: 29846
49
看到几个老外的评价,都说是很差
Terminator Genisys is a film that spends much of its 125-minute running time
straining to justify its existence and justify the extension of the brand.
It is less a movie than a full-length commercial for the potential of
ongoing Terminator movies that use the concept of time travel to keep itself
alive well past the point of expiration. And it is clearer now than ever
that this is a series that belongs in the past. It would be easy to say that
the Terminator franchise should hav... 阅读全帖
首页 上页 1 2 3 4 5 6 7 8 9 10 下页 末页 (共10页)