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To Be Human

[ Curiosity | Creativity [ Music | Poetry | Art ] | A Modified Version of Creativity | Emotions ]

F.gif (959 bytes)or some, AI marks the end of humans as being distinguished from all life on earth because of their superior intellect.  Just as early AI critics doubted that a computer could ever beat the best chess players because chess required intelligence to play, some people today feel that computers bestowed with AI will probably be able to reason as well as people in the future but will never be able to be creative or even feel, as seemingly nearly all biological organisms do.  While this notion is countered by strong AI contenders that emotions are a consequence of more complex algorithms, there has been some efforts to explore the creative and emotional realm of intelligence.

Curiosity

Curiosity goes beyond human intelligence: it is a basic trait that exists in many living organisms.  Tied in to learning, curiosity functions as a mechanism to compel organisms to make predictions about a situation and find out why its predictions fail, according to Roger Schank.  Furthermore, to wonder, to create answer to the questions generated from wonder, and to explain situations to oneself is partly a sign of intelligence.  An anthropocentric point of view would suggest that AI that is trying to replicate human intelligence must have a curiosity whose intensity and breadth be equal to the average person.

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Creativity

One of the most inherent human traits that is so hard to define is creativity.   The American Heritage Dictionary roughly defines creativity(under creative) as "1) Having the ability or power to create.  2) Creating; productive.  3) Characterized by originality and expressiveness; imaginative."   Because the third definition seems to be the most appropriate for the point being made, the words "originality," "expressiveness," and "imagination" must be explored."  Working like Oettinger's infamous translation machine, "originality" means "The capacity to act or think independently;" "original" means, "Not derived from something else;" "expressive" means "Of, or pertaining to conveying, or representing in words, art, music, or movement;" " and "imagination" means "1) The power of the mind to form a mental image or concept of something that is not real or present. 2) The ability to confront and deal with reality by using the creative powers of the mind."(The American Heritage Dictionary 338, 478, 642, 877)  Putting all those definitions together to make the word "creative" meaningful to the study of AI would go something like this: "Creativity is characterized by the independent development of concepts that has not been derived from something that already exists and is conveyed through words, art, music, or movement."  Schank offers an addendum to this combined definition of creativity: "...finding a new way to look at something that changes one's world in some significant way..." and being "able to adapt to changes in one's environment and being able to learn from experience."

What the final definition of creativity was meant to do was to clarify, in one statement, one of the criteria/goals of AI research.  To make a machine truly creative, it would have to demonstrate the ability to take what it knows from its knowledge base and produce new knowledge by itself.

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A Modified Version of Creativity

In general, most people feel that the liberal arts is the clearest place people to express their creativity.  It takes a creative person to produce something as abstract and as imaginative as music, poetry, and visual art.  That is why the following are some of the ways machine creativity is explored.

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Music

The most progressed forms of creativity in AI is music in part because of the low-storage requirement as opposed to visual art.  Music today in the computer world consists of the digitizing of sounds.  Nowadays, the advancement of memory and synthesizers enable computers to store a wide-range of sounds from many instruments and then faithfully replicated them either by playing the recorded sound or by originally synthesizing the same sound that can fool all but the most trained ears.  This is the basis of the musical instrument device interface(MIDI) that allows computers to perform such a feat.

The next step to integrate music and computers is actually making a machine compose its own work.  Also because of the much formalization of the rules and notation regarding its composition, music has progressed faster then any other creative medium of AI.

Much like natural language processing, music composition forced developers to program their computers to understand the sounds they could produce.  From sound-recognition that allow computers to distinguish individual sounds to music- recognition that allows a computer to dissect what a group of notes mean--much like elementary music theory.  A computer that can understand what differentiates classical music from rock 'n roll and techno will bring it closer to producing its own music either in a similar style(perhaps by generating random notes that conform to the rules of certain kinds of music) or creating its own style.

Poetry

Even though natural language processing has still some ways to go, a few people have created computer programs that generate poetry.  With the few number of rules that govern structured poetry like haiku's to other structures defined by the user, a computer can string together words based on semantics and the grouping of highly-used words.

Author Raymond Kurzweil of The Age of Intelligent Machines proposes poetry as another medium in which a variation of the Turing Test can be applied.  The Kurzweil Cybernetic Poet actually "studies" man-made poetry and then generates its own poetry in the same style based on word-sequences.  Feeding the computer poet stanzas from people like T. S. Eliot, Percy Bysshe Shelly, William Carlos Williams and even the author himself, the computer generated a few lines of poetry itself.  Taking a combination of computer-generated and human-generated stanzas, Kurzweil administered a quiz to thirteen adult judges and three child judges.  All in all, the adults correctly identified 63% of the computer-made poems from the human-made poems while children fared a bit worse at 42%.  Though not convincing statistics to pass the Turing Test, the Cybernetic Poet has achieved a lot just by employing some simple techniques in language parsing.  It is still a while before a computer writes what it means rather than what "sounds human."(Kurzweil 376-377)

Art

The computer has revolutionized art just as it did with music by augmenting the human artist and allow the artist a new medium with new possibilities to produce visual art.   Because computers can manipulate complex information like pictures with ease, it can reproduce the same image over and over or rotate the image in any angle possible.   Today, there are even 3-D art programs that allow the creation of exotic worlds and realistic objects.

Sometimes, an artist wants to emulate real artist tools to make pictures look as if it were painted by hand.  Thus, computers need to be programmed to recognize how different brushes produce different brush strokes, how the consistency of oil pastels differ from chalk pastels, and how rubbing blurs a pencil-drawn line.

The mathematics and art of fractals have all benefited from the development of the computer.  Scientists have recently created realistic worlds with fractals from the mountains to the clouds the the trees based on simple formulas.  The ramifications of fractals and 3-D modeling is that it can help a computer understand the world around it that may be help in developing an intelligent machine.

More AI-specific applications in art is the creation of a computer that is the artist.  Harold Cohen is a professor of the Visual Arts Department at the University of California, San Diego, created Aaron, a computer program designed to draw a botanical garden even though it has never seen one before.  Before the computer draws the picture, it is fed information of some general characteristics of plants which it then manipulates the height and the width of the plants to produce a variety of floral.   In addition, Aaron was given basic parameters about drawing a person and has produced garden scenes with human figures in it.

Emotions

Getting into the realm of science-fiction, there are some theoretical approaches to producing feelings in machines.  Using the psychology study of pain and pleasure, machines can be programmed to desire something like positive points and would then feel pain when those points are subtracted from it.  More generally, a computer could recognize that it must act a certain way to continue functioning(a will to live) like acquiring electricity so when it loses power, it experiences withdrawal symptoms making it at least think it feels pain.

 
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