1. Statistics with R
Fantastic examples from R
Johnson Hsieh (謝宗震)
Postdoctoral Reseracher in Biostatistics at NTHU
(http://creativecommons.org/licenses/by-nc-sa/3.0/)
2. When to use R?
1. Simulation & testing ideas
2. Statistical analysis
3. Data mining and machine learning
4. Data visualzation (Ben's talk)
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7. Secretary problem
n< 8 rp < 1^;rc< rpN,rp)
- ; es - 04 e - e(A es
ot< dt.rm(sz"n "uof=,"ucsrt"1n
u - aafae"ie=, ctf"1 scesae=/)
frri 2n{
o( n :)
frki 1rp)
o( n :es{
a< sml(:)#rn o apiat
- ape1n
ak f plcns
cm < mna1r1)#etoebfrrhapiat
op - i([:-] bs n eo t plcn
sc< an #atoe
e - [] Ls n
frii rn1{
o( n :-)
i([]<cm) #hoeihapiatbte ta cm
fai
op{ cos t plcn etr hn op
sc< ai
e - []
bek
ra
}
}
rck < sc
e[] - e
}
otr]< rid"ie=,"uof=,"ucsrt"smrc=)rp)
u[, - bn(sz"n ctf"r scesae=u(e=1/es
}
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22. 帝寶房價預測
資料來源:不動產實價登錄資料 (2012年8月 ~ 2013年9月)
頂級豪宅 40 / 21530 件
加入物件的面積大小、是否購買車位、屋齡、行政區域、樓層高低等因子配適模型
lbaymc)#rvdsfntosfrgnrlzdadtv mdlig
irr(gv poie ucin o eeaie diie oeln
dt < raRS"a1rs)
a1 - edD(dt.d"
#ftlna mdl
i ier oe
g < l(o1(
1 - m l g 0 總價) 面積+
~
車位+
屋齡+
行政區+ l o , d t = a 1
for aadt)
#ftadiemdlwt tosot trs
i div oe ih w moh em
g < g m l g 0 總價) s 面積) 車位+ (
2 - a(o1(
~(
+
s 屋齡) 行政區+ l o , d t = a 1
+
for aadt)
# C m a e a j s e R s u r d 越趨近1
opr dutd -qae,
模型配適度越好
dt.rm(lna mdl=umr(1$d..q "diiemdl=umr(2$.q
aafae"ier oe"smayg)ajrs, adtv oe"smayg)rs)
lna.oe adtv.oe
iermdl diiemdl
1
072
.3
095
.3
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24. 帝寶房價預測
# s t d t s t 帝寶格局
e aae,
nw< dt[:,c234671)
e - a116 (,,,,,2]
rwae(e)< 16
onmsnw - :
n w 面積 < c 1 0 1 0 2 0 2 0 2 0 2 0
e$
- (6,6,1,1,6,6)
n w 車位 < r p "
e$
- e ( 有車位" 6 ;
,)
n w 屋齡 < r p 8 6
e$
- e(, )
n w 行政區 < r p "
e$
- e ( 大安區" 6
,)
nwfor< rpc"
e $ l o - e ( ( 低樓層" "
, 高樓層" , )
)3
#peito
rdcin
tp< peitg,nwaanw s.i=RE
m - rdc(2 edt=e, eftTU)
pe < 1^bn(m$i,tpfttps.i,tpfttps.i)
rd - 0cidtpft m$i-m$eft m$i+m$eft
d t . r m ( 建案坪數" n w 面積, "
aafae"
=e$
高低樓層" n w f o r
=e$lo,
"
總價估計.
萬元" r u d p e [ 1 / 0 0 )
=on(rd,]100,
"
單價估計.
萬元" r u d p e [ 1 / 0 0 / e $
= o n ( r d , ] 1 0 0 n w 面積)
)
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37. LoL口袋深度分析 (http://goo.gl/KngyYO
(http://goo.gl/KngyYO))
ot < iETi1wn edon=0) ot < iETi2wn edon=0)
u1 - NX(d$i, npit10; u2 - NX(d$i, npit10
prfml=SHii)
a(aiy"Tet"
p o ( u 1 y i = ( , 0 , m i = 口袋深度分析" x a = 勝場數" y a = 英雄個數"
ltot, lmc04) an"
, lb"
, lb"
)
lnsot,cl2
ie(u2 o=)
lgn(tpet,c"h_etor,"Z_P_onn",cl12 ph1,by"" ly1
eed"olf" (aqWsdo" ABTAMrig) o=:, c=9 t=n, t=)
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53. Come back for more
Sign up at: www.meetup.com/Taiwan-R/ (http://www.meetup.com/Taiwan-R)
Give feedback at: www.facebook.com/Tw.R.User (https://www.facebook.com/Tw.R.User)
MLDM
Monday
VOD
at:
(https://www.youtube.com/user/TWuseRGroup)
www.youtube.com/user/TWuseRGroup
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