{"id":36809,"date":"2019-10-31T22:13:56","date_gmt":"2019-10-31T19:13:56","guid":{"rendered":"https:\/\/prohoster.info\/blog\/kak-stavit-seti-na-nachinayushhih-analitikov-ili-obzor-na-onlajn-kurs-start-v-data-science\/"},"modified":"2019-10-31T22:13:56","modified_gmt":"2019-10-31T19:13:56","slug":"kak-stavit-seti-na-nachinayushhih-analitikov-ili-obzor-na-onlajn-kurs-start-v-data-science","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/kak-stavit-seti-na-nachinayushhih-analitikov-ili-obzor-na-onlajn-kurs-start-v-data-science","title":{"rendered":"\u00abKuidas alustada algajate anal\u00fc\u00fctikute jaoks\u00bb v\u00f5i \u00fclevaade veebikursist \u00abAlgus Data Science'is\u00bb","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>M\u00f6\u00f6dusid juba \u00abtuhat aastat\u00bb, kui viimasel ajal midagi kirja panin, aga \u00e4kki tulid ootamatult p\u00f5hjused tolmu p\u00fchkida oma minits\u00fcklist publikatsioonid \u00abData Science'i \u00f5ppimine algusest peale\u00bb. \u00dches sotsiaalmeedia kontekstireklaamis ning ka lemmik \u00abHabr\u00bb lehelt sattusin ma kursuse kohta info peale <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/netologyru\/blog\/460701\/\">\u00abAlgus Data Science'is\u00bb<\/a><\/noindex>. Hind oli t\u00e4iesti naeruv\u00e4\u00e4rne, kursuse kirjeldus oli v\u00e4rvikas ja lubav. \u00abMiks mitte taastada tolmunud oskused, l\u00e4bides j\u00e4rgmise kursuse?\u00bb \u2014 m\u00f5tlesin ma. Samuti m\u00e4ngis rolli uudishimu, ammu oli tahtmine vaadata, kuidas selle firma \u00f5ppekorraldus v\u00e4lja n\u00e4eb.<\/p>\n<p>Koheselt hoiataks, et ma ei ole kursuse arenduse ega nende konkurentidega kuidagi seotud. Kogu artikli sisu on minu subjektiivne hinnang, kus on kergelt irooniat.<br \/>\nNii et kas sa ikka ei tea, kuhu oma k\u00f5va 990 rubla investeerida? Siis olete teretulnud allolevale.<\/p>\n<p><img decoding=\"async\" alt=\"\u00abKuidas alustada algajate anal\u00fc\u00fctikute jaoks\u00bb v\u00f5i \u00fclevaade veebikursist \u00abAlgus Data Science&#039;is\u00bb\" src=\"\/wp-content\/uploads\/2019\/08\/31f926ec46a92d47291a3aa14758178f.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nEsitan l\u00fchikese sissejuhatuse, et \u00f6elda, et suhtun skeptiliselt paljusid lubavaid kursuseid, mis suudavad algajatest l\u00fchikese ajaga teha \u00abedukad andmeanal\u00fc\u00fctikud, kelle palk \u00fcletab 100 000 rubla\u00bb (kuigi selle kohta v\u00f5isite kindlasti juba arvata artikli pealkirjast).<\/p>\n<p>M\u00f5ni aasta tagasi, kui Data Science'i koolituste aktiivne reklaam oli laineharjal, proovisin erinevate meetoditega omandada midagi andmete teaduse valdkonnast ja jagasin oma m\u00e4rkmeid saadud arusaamade kohta Harbi lugejatega.<\/p>\n<p><b class=\"spoiler_title\">Teised ts\u00fckli artiklid<\/b>1. \u00d5pime p\u00f5hialuseid:<\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habrahabr.ru\/post\/331118\/\">\u00abKatsu, Data, suur ja v\u00e4ike!\u00bb \u2014 (L\u00fchike \u00fclevaade Cognitive Classi Data Science'i kursustest)<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habrahabr.ru\/post\/331794\/\">\u00abN\u00fc\u00fcd on ta ka sind arvesse v\u00f5tnud\u00bb v\u00f5i Andmete teadus nullist (Data Science from Scratch)<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habrahabr.ru\/post\/331992\/\">\u00abJ\u00e4\u00e4berg Oscarist!\u00bb v\u00f5i kuidas ma proovisin DataScience'i algt\u00f5desid omandada kaggle'is<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habrahabr.ru\/post\/335214\/\">\u00abV\u00e4ike rong, mis suutis!\u00bb v\u00f5i \u00abMasin\u00f5pe ja andmete anal\u00fc\u00fcs\u00bb algaja silmade l\u00e4bi Data Science'is<\/a><\/noindex><\/li>\n<\/ul>\n<p>\n2. Harjutame esimesi oskusi<\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habrahabr.ru\/post\/337040\"> \u201cMasin\u00f5ppe \u00fclest\u00f5us\u201d v\u00f5i \u00fchendame hobi andmeanal\u00fc\u00fcsi ja lambipirnide spektrianal\u00fc\u00fcsi<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habrahabr.ru\/post\/337438\/\"> \u00abNagu noodid raamatust!\u00bb v\u00f5i Masin\u00f5pe (Data science) C#-s Accord.NET Frameworkiga<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habrahabr.ru\/post\/338124\/\"> \u00abKasuta masin\u00f5ppe j\u00f5udu, Luke!\u00bb v\u00f5i automaatne valgustite klassifitseerimine KSSi j\u00e4rgi<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habrahabr.ru\/post\/340698\/\"> \u00ab4 pulma ja \u00fcks matust\u00bb v\u00f5i lineaarne regressioon Moskva valitsuse avatud andmete anal\u00fc\u00fcsimiseks<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/346222\/\"> \u00abKiri T\u00fcrgi sultanile\u00bb v\u00f5i lineaarne regressioon C# keeles Accord.NET abil Moskva avatud andmete anal\u00fc\u00fcsimiseks<\/a><\/noindex><\/li>\n<\/ul>\n<p>\nJa siis, p\u00e4rast pikka aega, otsustasin proovida veel \u00fchte kursust.<\/p>\n<h4>Kursuse kirjeldus:<\/h4>\n<p>\nKursuse \u00abData Science\u2019i algus\u00bb kirjeldus lubab, et kulutades vaid 990 rubla <i>(artikli kirjutamise ajal)<\/i> saame neljan\u00e4dalase kursuse videotundide ja praktiliste \u00fclesannete formaadis algajatele. \u00c4ra unusta ka kursuse maksumusest osa h\u00fcvitamist maksutagastuse kaudu (lubavad k\u00f5ik dokumendid e-posti teel saata). <\/p>\n<p>Kursuse raames on kaks tinglikku blokki, \u00fcks r\u00e4\u00e4gib sellest, mis on \u00abAndmete teadus\u00bb, millised on populaarsed suunad ning kuidas karj\u00e4\u00e4ri andeteaduse vallas arendada. Teine blokk k\u00e4sitleb viit andmeanal\u00fc\u00fcsi t\u00f6\u00f6riista: Excel, SQL, Python, Power BI ja \u00abAndmete t\u00f6\u00f6tamise kultuur\u00bb. <\/p>\n<p>No mis siis, k\u00f5lab \u00abmaitsvalt\u00bb, maksame kursuse eest ja ootame alguskuup\u00e4eva.<\/p>\n<p>Ootuses logime oma isiklikku kontot p\u00e4eva enne kursuse algust, sirvime arendajate julgustavaid s\u00f5nu ja ootame kauaoodatud kursuse alguse teadet.<\/p>\n<p>Aeg on m\u00e4rkamatult m\u00f6\u00f6das, \u201eD-p\u00e4ev\u201d on saabunud, n\u00fc\u00fcd on aeg alustada \u00f5ppimist. Avades esimese \u00f5ppetunni, n\u00e4eme tuntud online-\u00f5ppimise skeemi \u2013 videolektsioon, lisamaterjalid, testid ja kodut\u00f6\u00f6d. Kui olete kunagi kasutanud Courserat, EDX-i v\u00f5i Stepikit, ei tohiks teil mingit probleemi tekkida.<\/p>\n<h4>Kursuse sees:<\/h4>\n<p>\nHakkame j\u00e4rjest. Esimese \u00f5ppetunni teema on \u201eDS \u00fclevaade: alus, kasu, rakendamine\u201d, see algab videolektsiooniga, nagu k\u00f5ik j\u00e4rgnevad \u00f5ppetunnid.<\/p>\n<p>Ja juba algusest on tunda, et juhendajad on l\u00e4htunud l\u00e4henemisest <b>\u201eNii ka l\u00e4heb\u201d <\/b>minu lemmik N\u00f5ukogude multifilmist.<\/p>\n<p>Esimese minutiga saad aru, et kursuse materjal ei olnud spetsiaalselt salvestatud, vaid oli v\u00e4lja rebitud m\u00f5nest muust avatud \u00f5ppetundidest v\u00f5i spetsialiseeritud kursustest. Samuti puuduvad videol <b>subtiitrid ja allalaadimisv\u00f5imalus <\/b> offline vaatamiseks.<\/p>\n<p>Loengu j\u00e4rel pakutakse lisamaterjale (videoloendi esitlus ja soovitatav kirjandus), mille \u00fcle me ei aruta. <\/p>\n<p>Seej\u00e4rel ootab meid test. Testid v\u00f5ivad olla erineva keerukuse ja k\u00fcsimuste sobivuse poolest l\u00e4bitud aine osas.<\/p>\n<p>Ja siin kordub veel kord huvi puudumine \u00f5ppimise tulemuste osas. <b>Testi v\u00f5ib l\u00e4bi kukkuda, kuid see ei m\u00f5juta midagi.<\/b>, \u00f5ppetunni te l\u00e4bite ikkagi edukalt, kuid t\u00e4iendava eksami taotlemine j\u00e4\u00e4b t\u00f5en\u00e4oliselt vastuseta. <\/p>\n<p>Edaspidi on tunni struktuur: \"video -&gt; lisamaterjalid -&gt; test\" \u2013 see saab olema kogu kursuse alus. <\/p>\n<p>M\u00f5nikord rikastatakse tundi k\u00fcsitlustega ja iseseisvate koduste \u00fclesannete tegemisega.<\/p>\n<p>Koduseid \u00fclesandeid on kokku ainult kaks. Ja ausalt \u00f6eldes olen ma l\u00e4binud vaid \u00fche. <\/p>\n<p>Esimese kodut\u00f6\u00f6na tuleb esitada oma CV, mis sisaldab peamisi oskusi. Ma ei saa 100% v\u00e4ita, kuid mulle tundub, et praktiliselt iga CV v\u00f5etakse vastu ja \u00fclesanne arvestatakse. P\u00e4rast \u00fclesannet saadetakse teile lisamaterjalid \u2014 soovitused. Kui m\u00f5tlen tagasi, kuidas ma Courseras kodut\u00f6\u00f6dega vaeva n\u00e4gin, tunnen ma isegi veidi kurbust selle lihtsuse \u00fcle.<\/p>\n<p>P\u00e4rast sissejuhatavat osa algab kauaoodatud \"T\u00f6\u00f6riistadega alustamine andmeteaduses\" uurimine. Esimesena on tund k\u00f5lavate pealkirjadega: \"T\u00f6\u00f6tamine Excelis: oskuste arendamine nullist anal\u00fc\u00fctikuks\".<\/p>\n<p>Vau! K\u00f5lab ahvatlevalt, kuid tegelikult on erinevus ootuste ja tegelikkuse vahel sama, mis reklaamifotol olevas burgeris ja selles, mida kassas teile antakse. <\/p>\n<p>Sisuliselt j\u00e4lgime, kuidas liikuda Excelis lahtrite automaatse t\u00e4itmise kaudu segasest \"VLOOKUP()\" funktsiooni selgitamisest, \u00f5petaja k\u00f5hkleb nagu Hamlet k\u00fcsimuses \"Olema v\u00f5i mitte olema\": \"Selgita k\u00f5ike algajatele\" v\u00f5i \"Anna huvitavat materjali professionaalidele\". Minu subjektiivse arvamuse kohaselt ei \u00f5nnestunud kumbagi. <\/p>\n<p>Eriti tore on see, et vaatamata sellele, et kursuse raames ei ole ette n\u00e4htud elavat veebiseminari. Tegemist ei ole nendel tundidel, mis l\u00e4ksid teistest m\u00f6\u00f6da, vaid lihtsalt vanade tundide salvestusega (vt allolevat pilti), otsustasid autorid ikkagi s\u00e4ilitada \u00f5hkkonna. <i>(v\u00f5i ehk lihtsalt laiskusid)<\/i> ja <b>sunivad teid viis minutit vaatama, kuidas \u00f5petaja heliprobleeme lahendab.<\/b>. <\/p>\n<p><img decoding=\"async\" alt=\"\u00abKuidas alustada algajate anal\u00fc\u00fctikute jaoks\u00bb v\u00f5i \u00fclevaade veebikursist \u00abAlgus Data Science&#039;is\u00bb\" src=\"\/wp-content\/uploads\/2019\/08\/1e81d4bc8c1511490175f833678a78aa.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nP\u00e4rast videot j\u00e4rgneb tavap\u00e4rane skeem \u2013 lisamaterjal ja test.<\/p>\n<p>J\u00e4rgmine teema on SQL keel. Tunnis antakse k\u00f5ige p\u00f5hise ja n\u00e4idendi t\u00f6\u00f6 SQL p\u00e4ringutega. \u00dcldiselt on sarnaste teemadega videoid ja artikleid <b>lihtsalt internetist t\u00e4iesti tasuta leida.<\/b>.<\/p>\n<p>SQL j\u00e4rel toimub tund, kus t\u00f6\u00f6deldakse Kagle andmestikku Python \u00abPandas\u00bb raamatukoguga. Tunni struktuur ei ole muutunud: video -&gt; lisamaterjalid -&gt; test. T\u00e4iendavaid \u00fclesandeid ei ole ette n\u00e4htud, isegi automaatset tulemuste kontrollimise \u00fclesannet ei ole. Seega ei pea te kindlasti 'Anaconda' installima ja koodi kirjutama. Samuti<b> tasub m\u00e4rkida v\u00e4ikest koodi fondi videolektoris.<\/b>, telefoni pealt vaatamine pole m\u00f5tet ja monitoril pidin vaatama praktiliselt peaaegu l\u00e4hedalt.<\/p>\n<p>Neljas \u00f5ppetund \u201eLogistika aruande visualiseerimine PBI-s 10 minutiga\u201c <code> (video kestab muide 50 minutit) <\/code>. Selles videos r\u00e4\u00e4gitakse huvitavast t\u00f6\u00f6riistast Power BI-st, millega ma ausalt \u00f6eldes varem kunagi kokku ei olnud puutunud. <\/p>\n<h4>\u00dcllatav kursuse l\u00f5petamine:<\/h4>\n<p>\nViies l\u00f5petav \u00f5ppetund r\u00e4\u00e4gib andmete \u00f5igest salvestamisest, loeng on taas v\u00f5etud teisest kursusest. Selles \u00f5ppetunnis, peale tavalise testi, on taas kodut\u00f6\u00f6, kuid ma ei teinud seda. Kas tahate teada, miks?<\/p>\n<p>Sest kui ma t\u00e4na avasin pooleli j\u00e4etud kursuse lehe, n\u00e4gin seda:<\/p>\n<p><img decoding=\"async\" alt=\"\u00abKuidas alustada algajate anal\u00fc\u00fctikute jaoks\u00bb v\u00f5i \u00fclevaade veebikursist \u00abAlgus Data Science&#039;is\u00bb\" src=\"\/wp-content\/uploads\/2019\/08\/0001864625a8e7a7d54518679c6263c8.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nSee t\u00e4hendab <b>s\u00fcsteem pidas mind kursuse edukalt l\u00e4bituks, kuigi ma tegelikult ei l\u00f5petanud seda<\/b>. <\/p>\n<p>Ja p\u00e4rast k\u00f5igi \u00fclej\u00e4\u00e4nud videote vaatamist ja testide sooritamist ei muutunud arvesti, see j\u00e4i 56% peale. Ma arvan, et <b>ma oleksin v\u00f5inud \u00fcldse mitte vaatama ja teste l\u00e4bima hakata ning ikka oleksin saanud \u201eDiplomi\u201c<\/b>.<\/p>\n<p>Eriti \u00fcllatav on see, et ametliku infokirja j\u00e4rgi kestsid kursus 22. juulist kuni 14. augustini, kuid \u201eDiplom\u201c anti mulle juba 04.08.2019. <\/p>\n<h4>Koolituse tulemus<\/h4>\n<p>\nEttev\u00f5tte veebisait lubab meile koolituse l\u00f5ppedes: \u201eTeie kvalifikatsiooni kinnitavad seaduslikud dokumendid.\u201d Kuid probleem on, et see kursus ei paista olevat ei \u00fcmber\u00f5ppeprogramm ega ka kutseoskuste t\u00e4iendamise programm, mist\u00f5ttu te saate lihtsalt <b>\u201esertifikaadi\u201d, millel ei ole ametlikku staatust<\/b>.<\/p>\n<p>V\u00f5ib-olla on kohane k\u00fcsida: \u201eMida sa ootasid 990 rubla eest?\u201d Ausalt \u00f6eldes \u2013 ma ei oodanud midagi. On selge, et kvaliteetsed kursused maksavad oluliselt rohkem. Kuid kogu probleem on selles, et on tasuta kursusi, mis on tehtud mitte ainult sama h\u00e4sti, vaid isegi palju professionaalsemalt, n\u00e4iteks kursused <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.microsoft.com\/ru-ru\/learn\/browse\/?term=%D0%90%D0%BD%D0%B0%D0%BB%D0%B8%D0%B7%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85\">MVA<\/a><\/noindex> v\u00f5i <noindex><a rel=\"nofollow\" href=\"https:\/\/cognitiveclass.ai\/courses\/\">Cognitive Class<\/a><\/noindex>. Sama \u201esertifikaadi\u201d kursuse l\u00e4bimise kohta (kui see kellelegi vajalik on) saab seal <b> t\u00e4iesti tasuta<\/b>.<\/p>\n<p>Plussidena v\u00f5ib m\u00e4rkida, et need \u00fclevaatlikud materjalid on koondatud \u00fchte kohta ja t\u00e4iesti Data Science\u2019iga mittetuttaval inimesel on t\u00f5eliselt lihtsam selles valdkonnas orienteeruda.<\/p>\n<p>Kursuse l\u00f5pus lubatakse meil \u00f5ppida hulga t\u00f6\u00f6riistu ning oma CV-s saame kirjutada j\u00e4rgmist:<\/p>\n<p><img decoding=\"async\" alt=\"\u00abKuidas alustada algajate anal\u00fc\u00fctikute jaoks\u00bb v\u00f5i \u00fclevaade veebikursist \u00abAlgus Data Science&#039;is\u00bb\" src=\"\/wp-content\/uploads\/2019\/08\/36afeb5acf408c8c44a8980f1f0cc616.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nFakt on see<b> et see on v\u00e4ga suur liialdus<\/b>T\u00e4itest kuulda enamikest t\u00f6\u00f6riistadest, kuid mitte enam.<\/p>\n<h4>Kokkuv\u00f5te<\/h4>\n<p>\nMinu arvates on kursusel minimaalne kasulikkus, eriti petab see, et autorid ei vaeva end selle jaoks eraldi video loomiseks. Sellega on h\u00e4bi k\u00fcsida raha, v\u00f5i peaks k\u00fcsima k\u00fcmme korda v\u00e4hem. <\/p>\n<p>Kuid kordaksin veel, et k\u00f5ik eelnevas on vaid minu subjektiivne hinnang, kas seda kursust l\u00e4bida v\u00f5i mitte \u2014 otsustage ise. <\/p>\n<p>P.S. V\u00f5ib-olla t\u00e4iustavad kursuse autorid seda aja jooksul ja kogu artikkel kaotab oma aktuaalsuse.<br \/>\nIgal juhul mainin, et see kehtib kursuse esimese k\u00e4ivitamise kohta 22. juulist 14. augustini.<\/p>\n<p><i>P.P.S. Kui postitus osutub nii eba\u00f5nnestunuks, siis kustutan selle, kuid alguses oleks tore lugeda kriitikat, v\u00f5ib-olla on lihtsalt midagi vaja muuta. Praegu n\u00e4eb see v\u00e4lja nagu negatiivne tagasiside kehvale kursusele.<\/i><br \/>\n<br \/>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/462449\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412\u043e\u0442 \u0443\u0436\u0435 \u00ab\u0442\u044b\u0441\u044f\u0447\u0443 \u043b\u0435\u0442\u00bb \u043d\u0438\u0447\u0435\u0433\u043e \u043d\u0435 \u043f\u0438\u0441\u0430\u043b, \u043d\u043e \u0432\u0434\u0440\u0443\u0433 \u043d\u0435\u043e\u0436\u0438\u0434\u0430\u043d\u043d\u043e \u043f\u043e\u044f\u0432\u0438\u043b\u0441\u044f \u043f\u043e\u0432\u043e\u0434 \u0441\u0434\u0443\u0442\u044c \u043f\u044b\u043b\u044c \u0441 \u043c\u0438\u043d\u0438-\u0446\u0438\u043a\u043b\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0439 \u043f\u043e \u00ab\u043e\u0431\u0443\u0447\u0435\u043d\u0438\u044e Data Science \u0441 \u043d\u0443\u043b\u044f\u00bb. \u0412 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