s**********y
发帖数: 38 | 1 Classification Tree example
Let's use the dataframe kyphosis to predict a type of deformation (kyphosis)
after surgery, from age in months (Age), number of vertebrae involved (
Number), and the highest vertebrae operated on (Start). # Classification
Tree with rpart
library(rpart)
# grow tree
fit <- rpart(Kyphosis ~ Age + Number + Start,
method="class", data=kyphosis)
上面是我从http://www.statmethods.net/advstats/cart.html摘录的code.How to get dataframe from R? 下面是我的程序，但没有任何结果出来， R 也没有ERROR
A=read.del... 阅读全帖 |
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h*****d
发帖数: 244 | 2 国内人无知也就算了，号称万能的军版也这水平，太掉价了
http://www.smithsonianmag.com/history/charles-proteus-steinmetz
Charles Proteus Steinmetz, the Wizard of Schenectady
His contributions to mathematics and electrical engineering made him one of
the most beloved and instantly recognizable men of his time.
By Gilbert King
smithsonian.com
August 16, 2011
Steinmetz and his contemporaries (Tesla, Einstein and others) at the Marconi
wireless station in New Jersey. Image courtesy of Wikicommons
He stood just four feet tall, hi... 阅读全帖 |
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W*******n
发帖数: 4140 | 3 Limin Wang
136-09 59th Ave
Flushing, NY 11355
Aug. 29, 2019, Thu
Re: Request for Truth and Justice
Government Agency: NYS Workers’ Compensation Board (WCB)
WCB Case#: G2029240
Carrier Case#: 18D48F512440
Date Of Injury (DOI): Jan. 16, 2018
Injured Worker and Claimant: Limin Wang
Direct Employer: B.Q. Wide Auto Body Parts Supply, Inc.
Headquarters Employer: KSI Auto Parts
Professional Employment Organization: TriNet/SOI (Strategic Outsourcing Inc.)
Third Party Administrator (TPA): Cannon Cochran ... 阅读全帖 |
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B******1
发帖数: 9094 | 4 TJ 在英特尔科学奖半决赛入围学生里又牛了一把！
Thomas Jefferson High School for Science and Technology
Brenner, Alec, 17, McLean
Viscoelastic Modeling of Tidal Heating in Terrestrial Exoplanets
Gondi, Suhas, 17, Centreville
Investigating microRNA-Mediated Regulation of Class Specific Dendrite
Morphogenesis
Ho, Katherine, 17, McLean
Real Time Apoptosis Imaging by an EB Conjugated Caspase 3 Activatable Probe
Peng, Jennifer, 17, Oak Hill
Investigating Rhodopsin Organization in Native and Model Membranes by Atomic
Force ... 阅读全帖 |
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i**********d
发帖数: 853 | 5 For CIN2 or 3 --> LEEP or Cold-knife conization --> LEEP (力捧)is preferred
(less infection and bleeding)
Structural Kyphosis (less than 70-80 degrees) --> Milwaukee brace +
Muscle strengthen. 驼背 – 心里七七八八 --> 要支十字架来心理安慰
C. Diff --> 何时用vanco，何时用metro --> 1.5
Breast Feeding jaundice和 Breast Milk jaundice 要鉴别。 |
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i**********d
发帖数: 853 | 6 For CIN2 or 3 --> LEEP or Cold-knife conization --> LEEP (力捧)is preferred
(less infection and bleeding)
Structural Kyphosis (less than 70-80 degrees) --> Milwaukee brace +
Muscle strengthen. 驼背 – 心里七七八八 --> 要支十字架来心理安慰
C. Diff --> 何时用vanco，何时用metro --> 1.5
Breast Feeding jaundice和 Breast Milk jaundice 要鉴别。 |
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z******8
发帖数: 844 | 7 ☆─────────────────────────────────────☆
zhu84518 (Henry) 于 (Mon May 5 23:08:37 2014, 美东) 提到:
一个好的口诀胜读10遍书，记住的知识点那是经久不忘，真是受益匪浅。我和Jeff一起
学习的时候编了不少好的口诀，现在Jeff考试考完了，match完了，抽点时间和我一起
把我们之前的口诀总结出来，一来是奉献麦地，也希望能够帮助后来的同学，二来是防
止我们的口诀继续在那里吃灰，这可都是我们耗费了多少脑细胞的成果。我们打算每天
抽点时间把口诀贴到此贴，如果有同学有自己的口诀想要分享，欢迎跟帖！
☆─────────────────────────────────────☆
zhu84518 (Henry) 于 (Mon May 5 23:12:40 2014, 美东) 提到:
☆─────────────────────────────────────☆
zhu84518 (Henry) 于 (Mon May 5 23:19:23 2014, 美东) 提到:
Toxopl... 阅读全帖 |
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m****o
发帖数: 86 | 8 今天在学校图书馆看到一个女生，有 kyphosis ，就是脊柱后突，学过 health
assessment 的同学都对这个词不会陌生。她的程度挺明显的，肯定很难搭配衣服。
不过她很creative.她把自己打扮成女巫。身上披了一个黑色的Poncho ,带了一
个黑色的尖帽子。
反正她也需要拐棍，他就把拐棍装扮成了一个扫把。整体看上去很协调，很
CUTE~
本来想上去找她合影的，没带相机。
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n*****5
发帖数: 61 | 9 Is your dependent variable categorical? Do you have any categorical data in
your file? Use "factor" function to change
data type first. If it still doesn't work, check controls. You might need to
reset control parameters.
kyphosis)
序，但没有任何结果出来， R 也没有ERROR |
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