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Big Data előadás

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Viktor Gyuris

on 19 September 2014

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Transcript of Big Data előadás

Gyuris Viktor
Big data is like teenage sex: everyone talks about it, nobody really knows how to do it, everyone thinks everyone else is doing it, so everyone claims they are doing it...

Dan Ariely Facebook January 6, 2013
Harminc dollár egy terrabájt
... de mi fér egy terrabájtba?
1 TB:
1 kép fél percenként...
30 perc videó naponta...
összes audió...
egy éven át
Mp mp
mp3 gyüjtemény
videó gyüjtemény
500 000 TB
(fél millió emberév)
500 000 TB
(fél millió emberév)
1500 000 TB
(másfél millió emberév)
2020-ra mindenki minden nyilvános interakciója tárolható lesz
Milyen adatokat gyüjtünk?
személyes adatok 3 millió TB
pénzügyi tranzakciók: globális, céges
észlelők: kamerák
szoftver logok
meteorológia, szeizmológia
fizikai kísérletek:
Large Hedron Collider 600 TB/sec
emberiség teljes DNS: 70 millió TB
Relációs adatbázis
Big Data
Rekordok módosíthatóak
Recordok csak olvashatóak
Rekordokat többször
Legtöbb rekordot
egyszer se olvassák
Minden rekord értékes
Egyes rekordok
Egyáltán, mi
az a rekord
80 millió TB
Új eszközök
Új kérdések
Új szakmák
Új cégek
Asian men are the least desirable racial group to women…

While Asian women are more likely to give Asian men higher ratings, women of other races—black, Latina, white—give Asian men a rating between 1 and 2 stars less than what they usually rate men.

Users who send copy-and-paste messages get responses more efficiently

OkCupid tracks how many characters users type in messages versus how many letters are actually sent. (For most users, it’s three characters typed for every one character sent.) In doing this analysis, Rudder found that up to 20% of users managed to send thousands of characters with 5 keystrokes or less—likely Control+C, Control+V, Enter. A little more digging showed that while from-scratch messages performed better by 25%, copy-and-paste messages received more replies per unit of effort.

Your Facebook Likes reveal can reveal your gender, race, sexuality and political views.

A group of UK researchers found that based on someone’s Facebook Likes alone, they can tell if a user is gay or straight with 88% accuracy; lesbian or straight, 75%; white or black, 95%; man or woman, 93%; Democrat or Republican, 85%.
file system cikk
MapReduce cikk
kiadja Hadoop-t
: We’re releasing a whole bunch of code that we use with Hadoop <...>. Use it, fork it, improve upon it.
Data scientist
Nine Ugly Lessons About Sex From Big Data
31 millió Twitter fan
51 millió Facebook fan
Celebek: Lady Gaga
költség kontroll
leghatékonyabb terápiák

Csalás detektálás
hitel kártyák
Home Depot visszaváltás
MinuteCast by AccuWeather
Data analyst
By 2015, it is expected to create 4.4 million IT jobs globally, of which 1.9 million will be in the U.S.
There will be a shortage of talent necessary for organizations to take advantage of big data. By 2018, the United States alone could face a shortage of 140,000 to 190,000 people with deep analytical skills
Data visualizer
Data warehouse manager
fizetés: $120 000 - $200 000
Big Data szakmák
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