作者查詢 / abc2090614
作者 abc2090614 在 PTT [ R_Language ] 看板的留言(推文), 共64則
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全部LoL611Stock298MLB271FBaseball155Gossiping148Steam145C_Chat125Baseball121VR88NBA65R_Language64NY-Mets57Monkeys44DataScience40Math40studyabroad40PlayBaseball38Eng-Class36Python32Oversea_Job28guitar25Physics24NCAA20TFSHS68th31920NY-Yankees18TCFSH68th21618TreeofSavior18Braves16Brewers14Athletics12Rays12RedSox12SF12AC_In10Angels9Baseball_Sim9Cardinals9MLBGAME9PlayStation9Fiction8movie8NBA_Fantasy8Cobras6Indians6Isayama6NFL6Old-Games6Soft_Job6Army-Sir5Asian-MLB5joke5Militarylife5Tech_Job5Astros4Aviation4book4GO4Paradox4SENIORHIGH4STREET_BALL4young-jiang4CLHu3DET_Tigers3Diamondbacks3FuMouDiscuss3novel3Psy-Team3Rockets3Sabermetrics3TOEFL_iBT3A-Rod2Blue_Jays2ck57th3282Cubs2DigitalMusic2Dodgers2Espannol2FCU-INS93B2FEZ2GoldenEagles2Guardians2HCSHch13_3112HSNU_10662Japandrama2KUAS2Language2Law-Fala2LoL_Picket2Mariners2NCCUPA_SPORT2NDHU-His1002NTUST-ET-A962Palmar_Drama2Rockies2SeibuLions2Sub_Strategy2Tigers2AQUA_SB1ArakawaCow1ask1b-baseball1B98303XXX1basketball1Beauty1BR1car1CCF1Celtics1ChicagoBulls1Christianity1CMWang1CPBL1DummyHistory1FCU_EE97A1FJU-ACCR941Future-Star1GUNNM1HCHS923161HSNU_11701IA1InitialD1ISUEE93A1Jeremy_Lin1K_baseball1KS91-3051KS96-3191Macross1MAJOR1Marlins1MartialArts1Matsuzaka_181media-chaos1MIN-Twins1music1NCCU98_LawLt1NCKU_ECO971NCU97ME-B1NDMC-M1051NDMC-N561NeiHu7011NIUECE911NKFUST_MD1NTU1NTUcourse1NTUE-ME971NUU_Talk1Okajima1Orioles1Padres1PC_Shopping1phys011phys991Pistons1PublicIssue1Rangers1Reds1RIPE_gender1sex1SFGiants1skinny1sky1SlamDunk1specialman1StatSoftball1talk1TheSims1Thunder1TW-history1TW-language1Whales1winsock1Wrestle1YAKYU1YCChen1YZUfinGrad951<< 收起看板(175)
4F→: R裡面可以用函數取代的就盡量不要用for loop02/12 13:06
1F→: 這等於是有個tree的edges + depths 然後作 root to12/20 09:34
2F→: leaf tree traversal?...我其實也滿好奇這在r要怎作12/20 09:34
15F→: http://stackoverflow.com/questions/494687312/19 22:40
16F→: 用colSums多加一列吧 除非你有字串12/19 22:40
17F→: 這就沒辦法, 因為你要存成dataframe 每個column12/19 23:23
18F→: vector都要是同一種type12/19 23:23
19F→: 我不懂的是你的商品存成字串不行嗎?商品這種東西不會12/19 23:24
20F→: 有什麼根號2這種數字吧 存成numeric或string都一樣12/19 23:25
1F→: 是我的話就用RODBC直接寫SQL了...12/18 00:00
2F→: 你是要取每個group裡的第一列? 我看不太懂QUALIFY12/18 00:06
5F推: 如果是取第一列的話用dplyr的summarize() 裡面取的12/19 22:33
6F→: 函數用 first()12/19 22:34
7F→: 應該說是用groupy(aa) %>% summarize(bb=first(cc))12/19 22:34
3F→: 直接寫信去問RStudio的Yihue Xie吧11/21 16:04
5F→: 有夠多人幹譙他們就會增加中文支援了啊XD11/22 01:33
3F→: age_match %>% dplyr::filter(name=="Bob")11/20 13:25
3F→: 好歹給個例子吧 也沒data也沒講清楚是要哪種11/20 16:08
4F→: undersampling11/20 16:08
5F→: 我覺得有可能是浮點數的問題 在算hessian時以你的函數11/15 14:03
6F→: off-diagonal的應該是0 但用numDeriv會有一點誤差11/15 14:03
11F→: 也有可能是那篇文章裡的作法有誤 我過兩天再研究一下11/15 14:11
13F→: 發現自己不知道在講啥= = 應該不是浮點數問題11/15 15:18
1F推: 我之前有學生也是裝半天才發現是R版本太舊11/12 03:28
5F→: 檔案名稱不要取中文11/07 06:32