Can robots be creative? - Gil Weinberg

494,342 views ・ 2015-03-19

TED-Ed


Please double-click on the English subtitles below to play the video.

Prevodilac: Milenka Okuka Lektor: Mile Živković
00:10
How does this music make you feel?
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Kako se osećate dok slušate ovu muziku?
00:13
Do you find it beautiful?
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Da li mislite da je lepa?
00:14
Is it creative?
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Da li je kreativna?
00:16
Now, would you change your answers
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No, da li biste promenili mišljenje
00:18
if you learned the composer was this robot?
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kada biste saznali da je kompozitor ovaj robot?
00:21
Believe it or not,
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Verovali ili ne,
00:23
people have been grappling with the question of artificial creativity,
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ljudi se bave pitanjem veštačke kreativnosti,
00:26
alongside the question of artifcial intelligence,
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zajedno s pitanjem veštačke inteligencije,
00:29
for over 170 years.
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više od 170 godina.
00:32
In 1843, Lady Ada Lovelace,
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1843, ledi Ejda Lavlejs,
00:35
an English mathematician considered the world's first computer programmer,
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engleska matematičarka koja se smatra prvim informatičkim programerom na svetu,
00:40
wrote that a machine could not have human-like intelligence
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napisala je da mašina ne može da ima ljudsku inteligenciju,
00:43
as long as it only did what humans intentionally programmed it to do.
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sve dok radi samo ono za šta su je ljudi namenski programirali.
00:49
According to Lovelace,
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Prema Lavlejsovoj,
00:50
a machine must be able to create original ideas
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mašina mora da bude sposobna da stvara originalne ideje
00:53
if it is to be considered intelligent.
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ako ćemo da je smatramo inteligentnom.
00:57
The Lovelace Test, formalized in 2001, proposes a way of scrutinizing this idea.
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Lovlejsin Test koji je formalizovan 2001, predlaže način proučavanja ove zamisli.
01:03
A machine can pass this test if it can produce an outcome
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Mašina može da položi ovaj test, ako može da proizvede rezultat
01:07
that its designers cannot explain based on their original code.
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koji njeni dizajneri ne mogu da objasne na osnovu prvobitnog koda.
01:12
The Lovelace Test is, by design, more of a thought experiment
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Lavlejsin test je po strukturi više misaoni eksperiment
01:15
than an objective scientific test.
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nego što je objektivan naučni test.
01:18
But it's a place to start.
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Međutim i to je nešto, za početak.
01:20
At first glance,
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Na prvi pogled,
01:21
the idea of a machine creating high quality, original music in this way
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zamisao o mašini koja na ovaj način stvara visoko kvalitetnu, originalnu muziku
01:25
might seem impossible.
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može da se čini nemogućom.
01:27
We could come up with an extremely complex algorithm
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Mogli bismo da osmislimo izuzetno složen algoritam,
01:30
using random number generators, chaotic functions, and fuzzy logic
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koristeći nasumične generatore brojeva, haotične funkcije i nejasnu logiku
01:34
to generate a sequence of musical notes
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kako bi smo stvorili niz muzičkih nota
01:36
in a way that would be impossible to track.
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tako da bi im bilo teško ući u trag.
01:39
But although this would yield countless original melodies never heard before,
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Ali, iako bi ovo proizvelo bezbroj originalnih melodija, novih za uho,
01:43
only a tiny fraction of them would be worth listening to.
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samo bi mali deo njih bio vredan slušanja.
01:47
With the computer having no way to distinguish
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Ne bi bilo šanse za kompjuter da razlikuje
01:49
between those which we would consider beautiful
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one koje bismo smatrali lepim
01:51
and those which we won't.
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i one koje ne bismo.
01:54
But what if we took a step back
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No šta ako bismo zakoračili unazad
01:56
and tried to model a natural process that allows creativity to form?
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i pokušali da imitiramo prirodni proces koji omogućuje formiranje kreativnosti?
02:01
We happen to know of at least one such process
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Znamo za bar jedan takav proces
02:03
that has lead to original, valuable, and even beautiful outcomes:
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koji je doveo do originalnih, dragocenih, pa čak i lepih rezultata:
02:07
the process of evolution.
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proces evolucije.
02:10
And evolutionary algorithms,
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A evolutivni algoritmi,
02:12
or genetic algorithms that mimic biological evolution,
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ili genetički algoritmi koji podražavaju biološku evoluciju
02:16
are one promising approach
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su obećavajući pristup
02:18
to making machines generate original and valuable artistic outcomes.
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za postizanje da mašine daju originalne i dragocene umetničke rezultate.
02:24
So how can evolution make a machine musically creative?
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Pa, kako evolucija može da učini mašinu muzički kreativnom?
02:27
Well, instead of organisms,
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Pa, umesto organizama,
02:29
we can start with an initial population of musical phrases,
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možemo početi sa početnom grupom muzičkih fraza
02:41
and a basic algorithm
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i osnovnih algoritama
02:42
that mimics reproduction and random mutations
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koji podražavaju reprodukciju i nasumične mutacije
02:45
by switching some parts,
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tako što menjaju neke delove,
02:48
combining others,
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kombinuju druge
02:49
and replacing random notes.
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i zamenjuju nasumične note.
02:52
Now that we have a new generation of phrases,
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Sad kad imamo novu generaciju fraza,
02:55
we can apply selection using an operation called a fitness function.
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možemo da primenimo selekciju, koristeći operaciju koja se zove pogodna funkcija.
03:00
Just as biological fitness is determined by external environmental pressures,
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Baš kao što je biološka pogodnost određena spoljašnjim pritiscima sredine,
03:04
our fitness function can be determined by an external melody
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našu pogodnu funkciju može da odredi spoljna melodija
03:08
chosen by human musicians, or music fans,
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koju odabere ljudski muzičar ili ljubitelji muzike,
03:11
to represent the ultimate beautiful melody.
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kako bi predstavljala krajnje prelepu melodiju.
03:20
The algorithm can then compare between our musical phrases
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Algoritam potom može da vrši poređenje među našim muzičkim frazama
03:23
and that beautiful melody,
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i tom lepom melodijom
03:25
and select only the phrases that are most similar to it.
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i da odabere fraze koje su joj najsličnije.
03:28
Once the least similar sequences are weeded out,
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Čim su najmanje slični nizovi iskorenjeni,
03:31
the algorithm can reapply mutation and recombination to what's left,
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algoritam može ponovo da primeni mutaciju i rekombinaciju onoga što je preostalo,
03:36
select the most similar, or fitted ones, again from the new generation,
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da izabere najsličnije ili najpogodnije, ponovo iz nove generacije
03:40
and repeat for many generations.
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i da to ponavlja tokom mnogih generacija.
03:48
The process that got us there has so much randomness and complexity built in
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Proces kojim bismo stigli dotle ima toliko ugrađene nasumičnosti i složenosti
03:52
that the result might pass the Lovelace Test.
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da bi rezultati mogli da prođu Lavlejsin test.
03:56
More importantly, thanks to the presence of human aesthetic in the process,
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Što je značajnije, zahvaljujući prisustvu ljudske estetike u procesu,
04:00
we'll theoretically generate melodies we would consider beautiful.
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teoretski bismo proizvodili melodije koje bismo smatrali lepim.
04:09
But does this satisfy our intuition for what is truly creative?
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No, da li to zadovoljava našu intuiciju o tome šta je istinska kreativnost?
04:13
Is it enough to make something original and beautiful,
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Da li je dovoljno napraviti nešto originalno i lepo,
04:16
or does creativity require intention and awareness of what is being created?
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ili kreativnost zahteva nameru i svest o tome šta se stvara?
04:22
Perhaps the creativity in this case is really coming from the programmers,
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Možda kreativnost u ovom slučaju zaista potiče od programera,
04:26
even if they don't understand the process.
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čak iako oni ne razumeju proces.
04:29
What is human creativity, anyways?
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Šta je ljudska kreativnost uopšte?
04:31
Is it something more than a system of interconnected neurons
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Da li je to nešto više od sistema međupovezanih neurona
04:34
developed by biological algorithmic processes
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koje su razvili biološki algoritamski procesi
04:37
and the random experiences that shape our lives?
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i nasumična iskustva koja oblikuju naše živote?
04:40
Order and chaos, machine and human.
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Red i haos, mašina i čovek.
04:44
These are the dynamos at the heart of machine creativity initiatives
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Ovo su generatori u srži inicijativa mašinske kreativnosti
04:48
that are currently making music, sculptures, paintings, poetry and more.
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koji trenutno prave muziku, skulpture, slike, poeziju i drugo.
04:54
The jury may still be out
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Osude su možda i dalje validne
04:55
as to whether it's fair to call these acts of creation creative.
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po pitanju toga da li je pošteno nazvati ove činove kreativnosti kreativnim.
05:00
But if a piece of art can make you weep,
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Međutim, ako vas umetničko delo može rasplakati
05:02
or blow your mind,
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ili vas oduševiti
05:03
or send shivers down your spine,
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ili izazvati trnce niz vašu kičmu,
05:06
does it really matter who or what created it?
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da li je zaista važno ko ga je ili šta stvorilo?
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