CAN: Creative Adversarial Networks, Generating Art by Learning About Styles and Deviating from Style Norms — TEI-tagged view

Ahmed Elgammal, Bingchen Liu, Mohamed Elhoseiny, Marian Mazzone · 2017 · art-history · arXiv:1706.07068 · full text at the source · TEI xml · tagged edition · index · concepts · authors
Where this record's text came from. faceted 2026-08 by reading the locally held text (pdftext); every evidence string verified as an exact substring of that text before merging. The paper is a hybrid: a built system plus four human-subject validation studies ('We conducted experiments to compare the response of human subjects to the generated art with their response to art created by artists.'). I coded method as system-or-tool-building because the system is the contribution and the experiments are validation, but behavioural-experiment is a defensible second method tag. The paper's critique of plain GANs ('We argue that such networks are limited in their ability to generate creative products in their original design.') is an argued limitation rather than an empirical contradiction, so it is recorded as the 'extends' relation rather than 'contradicts'. Experiment III reused Snapper et al's instrument but on different stimuli, so it is coded builds-on, not replicates. 2026-08-14 and 2026-08-25 schema-0.3 passes: every quote verified as an exact substring of the staged text and anchored at merge time; concept terms verified present; every edge endpoint an existing node. Update, 15 September 2026: EXCEPTION, measured with the merge gate's own predicate (Paper.locate): 1 quote(s) on this record are not found as one exact string in the current staged text - content_tags.findings[0].evidence. The sentence above does not hold for them as written. Where a row records why - the quote is grounded in another copy of the paper, joins two passages with an ellipsis, or differs from the staged text by extraction noise - that note stays on the row.
The quality of the text these quotes were cut from. symbol-font-not-extractable: 5 '(cid:NNN)' glyph-index markers remain in a staged text of 49,975 characters, where the PDF's embedded font had no ToUnicode map. THE QUOTES ON THIS RECORD ARE THE PAPER'S AND THE STAGED COPY IS THE DAMAGED ONE - which is the opposite of the usual case and is why it went unnoticed: one of its 51 live quotes is not an exact substring of this text, and it could NOT be located in it even by aligning the quote's WORD SEQUENCE under this damage, so the defect recorded here is present on the record but does not by itself account for the miss. Not repaired in place: editing the staged text moves every offset after the edit and re-hashes every anchor on the record. Measured at 113aae60fefc3eb1, re-measured unchanged at 54b63482778ddf56.
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2 quotes on this page break a word across a line. The PDF this text was extracted from hyphenated those words at the end of a printed line — adversar- ial, repre- sentations — and the extractor kept the hyphen and the space. The quotes keep them because a quote is reproduced exactly or it proves nothing: the break is the typesetter’s, not the author’s. A search of this page will not find the affected words.
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Other fields define these differently the same word, defined another way in another discipline
art 5 fields · null-hypothesis 3 fields · novelty 3 fields · standard-deviation 3 fields · arousal 2 fields
Tags on this paper every tag the record carries, whether or not the words occur in the text below — a number is how many papers in the corpus carry that tag; a tag with no number is unique to this paper
creative adversarial network generative art style3 computational creativity style class style ambiguity collative variables2 novelty7 system-or-tool-building173

Our tag layer for this paper

Cross-disciplinary analysis
content-tags & facets: phenomenon · claim-type · cross-domain-transfer · mechanism · claim-relation · replication-status · limitation — grounded in the full text
phenomenonmachine generation of creative visual art— “The goal of this paper is to investigate a computational creative system for art generation without involving a human artist in the creative process, but nevertheless involving human creative products in the learning process.”
claim-typemethod— “We propose a new system for generating art.”
method — evidence— “We propose a model for an art-generating agent, and then propose a functioning model using a variant of GAN to make it creative.”
transferfrom artificial intelligence (deep learning / GANs): generative adversarial networks adapted to generate art that deviates from style norms— “We build over Generative Adversarial Networks (GAN), which have shown the ability to learn to generate novel images simulating a given distribution”transfers[0]
transferfrom psychology (Berlyne aesthetics / arousal theory): Berlyne theory of aesthetic novelty and arousal used to design the creativity objective— “Berlyne emphasized that the most significant arousal-raising properties for aesthetics are novelty”transfers[1]
mechanismmodify the GAN objective to push generated images to deviate from established style norms while staying near the art distribution— “force the system to explore creative space to find solutions that deviate from established styles but stay close enough to the boundary”mechanisms[0]
extends Generative Adversarial Networks (from AI)— “We build over Generative Adversarial Networks (GAN)”claim_relations[0]
builds-on Generative Adversarial Networks (GAN)— “We build over Generative Adversarial Networks (GAN), which have shown the ability to learn to generate novel images simulating a given distribution.”claim_relations[1]
extends Generative Adversarial Networks (GAN)— “We propose modifications to its objective to make it capable of generating creative art by maximizing deviation from established styles and minimizing deviation from art distribution.”claim_relations[2]
builds-on Martindale's principle of least effort and explanation of style breaks— “The approach proposed in this paper is inspired by Martindale’s principle of least effort and his explanation of style breaks.”claim_relations[3]
builds-on the art-perception experiment of Snapper et al [23]— “This experiment is similar to an experiment conducted by Snapper et al [23] to determine to what degree human subjects find the works of art to be intentional, having visual structure, communicative, and inspirational.”claim_relations[4]
sensestyle - AS A CLASS IN A CLASSIFIER: the network's final layer has K outputs where K is the number of style classes, so here the word names a position in a label set rather than any property of the picture, and an image's style is whichever index wins— “into 3 fully collected layers sizes 1024, 512, K, respectively, where K is the number of style classes”senses[0]
sensestyle ambiguity - AS POSTERIOR ENTROPY: the generator is rewarded for making the style classifier uncertain, so 'deviating from style norms' is implemented as producing images the classifier cannot place, and creativity becomes a property of a confusion matrix— “We added a style classification loss and a style ambiguity loss. Maximizing the stylistic ambiguity can be achieved by maximizing the style class posterior entropy”senses[1]
sensenovelty - INHERITED FROM BERLYNE'S COLLATIVE VARIABLES: it is one of five arousal-raising properties named in an aesthetics theory - novelty, surprisingness, complexity, ambiguity and puzzlingness - and this system implements the fourth of them while the record's limitation says creativity was operationalised as the first— “Berlyne emphasized that the most significant arousal-raising properties for aesthetics are novelty, surprisingness, complexity, ambiguity, and puzzlingness. He coined the term collative variables to refer to these properties collectively”senses[2]
controlan art-trained DCGAN baseline at both 64x64 and 256x256, generated and rated alongside the proposed model by the same human subjects — held — rules out the human ratings reflecting that the images are art-like at all rather than that the proposed objective did anything - the baseline is the same architecture without it— “Top Panel: Sample images generated by art-trained DC- GAN 64x64 baseline model (top 6 and bottom 6 ranked images are shown according to human subject likeness rating in Experiment I).”controls[0]
auditstyle ambiguity —operationalised-as→ style class — Audit 2026-09-28: DOUBTFUL - read against its full span and kept, but ambiguity is achieved by maximizing the style-class posterior entropy; operationalised-as is loose.— “We added a style classification loss and a style ambiguity loss. Maximizing the stylistic ambiguity can be achieved by maximizing the style class posterior entropy”concept_edges[0]
edgenovelty —part-of→ collative variables— “Berlyne emphasized that the most significant arousal-raising properties for aesthetics are novelty, surprisingness, complexity, ambiguity, and puzzlingness. He coined the term collative variables to refer to these properties collectively”concept_edges[1]
outcome (stated by the tagger, no quotation)control — heldcontrols[0]
for which uselimitation — the generative approach itself: THE FUNDAMENTAL LIMITATION OF USING GANS IN GENERATING CREATIVE WORKS— “the fundamental limitation of using GANs in generating creative works”limitations[0]
for which uselimitation — every creativity claim in the paper: ASSESSING THE CREATIVITY OF ARTIFACTS GENERATED BY THE MACHINE IS AN OPEN AND HARD QUESTION— “Assessing the creativity of artifacts generated by the machine is an open and hard question.”limitations[1]
for which uselimitation — what the word creative means in this work: SINCE INFLUENCE IS NOT RELEVANT HERE, WE USE NOVELTY AS A PROXY FOR CREATIVITY— “However, since influence is not relevant here, we use novelty as a proxy for creativity.”limitations[2]
for which uselimitation — any semantic reading of what the system does: IT DOES NOT HAVE ANY SEMANTIC UNDERSTANDING OF ART BEHIND THE CONCEPT OF STYLES— “However it does not have any semantic understanding of art behind the concept of styles.”limitations[3]
for which uselimitation — the headline comparison, which the authors decline to interpret: WE LEAVE OPEN HOW TO INTERPRET THE HUMAN SUBJECTS' RESPONSES THAT RANKED THE CAN ART BETTER THAN THE ART BASEL SAMPLES— “We leave open how to interpret the human subjects’ responses that ranked the CAN art better than the Art Basel samples in different aspects.”limitations[4]
for which uselimitation — the same scope as limitations[4]: MORE EXPERIMENTS ARE DEFINITELY NEEDED TO HELP ANSWER THESE QUESTIONS— “More experiments are definitely needed to help answer these questions.”limitations[5]
for which uselimitation — the creativity claimed for these images: it is implemented as maximising the entropy of the style class posterior, that is, as being hard for the style classifier to assign to any class— “Maximizing the stylistic ambiguity can be achieved by maximizing the style class posterior entropy”limitations[6]
for which uselimitation — the style categories used here: they are a fixed set whose size K is a network design parameter, fixed by the label set of the training corpus rather than by art history— “into 3 fully collected layers sizes 1024, 512, K, respectively, where K is the number of style classes”limitations[7]
for which uselimitation — the claim that this system generates art: the paper's title puts the word in quotation marks and describes the method as learning about styles and deviating from style norms— “CAN: Creative Adversarial Networks Generating “Art” by Learning About Styles and Deviating from Style Norms”limitations[8]
replicationuntested
limitationGANs have a fundamental limitation in generating genuinely creative works— “the fundamental limitation of using GANs in generating creative works”limitations[0]
limitationCreativity of machine-generated artifacts is acknowledged to be an unresolved assessment problem.— “Assessing the creativity of artifacts generated by the machine is an open and hard question.”limitations[1]
limitationCreativity was operationalised only as novelty, because influence could not be measured.— “However, since influence is not relevant here, we use novelty as a proxy for creativity.”limitations[2]
limitationThe system has no semantic understanding of art beyond style categories.— “However it does not have any semantic understanding of art behind the concept of styles.”limitations[3]
limitationThe authors cannot explain why subjects rated CAN images above the human Art Basel set.— “We leave open how to interpret the human subjects’ responses that ranked the CAN art better than the Art Basel samples in different aspects.”limitations[4]
limitationFurther experiments are needed to settle the interpretation of the results.— “More experiments are definitely needed to help answer these questions.”limitations[5]
limitationCreativity is implemented as making a classifier maximally unsure which style it is looking at.— “Maximizing the stylistic ambiguity can be achieved by maximizing the style class posterior entropy”limitations[6]
limitationThe style vocabulary is a fixed list whose length is a design parameter of the network.— “into 3 fully collected layers sizes 1024, 512, K, respectively, where K is the number of style classes”limitations[7]
limitationThe paper's own object is scare-quoted in its title.limitations[8]
Content tags
content-observations: finding · quantity · variable · definition · key-term — grounded in the full text
findingCAN (Creative Adversarial Networks) generates art by learning styles, then becoming creative by increasing arousal potential — maximizing deviation from established styles while minimizing deviation from the overall art distribution.content_tags.findings[0]
not machine-vouchedfinding — declared-ellipsis - An elided quote: its 2 pieces ('The system generates art by look- ing at' ... 'izing de- viation from art distribution.') are each in our copy of the paper (with line-break hyphens, spacing and punctuation set aside), and the quote marks the cut with an ellipsis, so the joined string is in no copy. Located mechanically, piece by piece.content_tags.findings[0]
findingExperiments compared human subjects' responses to the generated art with their responses to art created by people.content_tags.findings[1]
variablearousal potential (independent)content_tags.variables[0]
definitionCreative Adversarial Network (CAN)content_tags.definitions[0]
evidence status notedefinition — QUOTE REPAIRED: the extractor split a hyphen-space and the quote was recorded faithfully with the damage in it, which made it unanchorable. The repaired string is an EXACT SUBSTRING of the staged text - that is why it was accepted, not because a rule produced it. The text as originally recorded is kept in evidence as extracted.content_tags.definitions[0]
definitioncollative variablescontent_tags.definitions[1]
definitionWundt curve
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
content_tags.definitions[2]
key-termsart, style, creative, GAN, arousal, novelty, generated, discriminator, deviating
Concepts
terms this paper carries, each with the sentence it was cut from — the layer that joins one paper to another. Terms with no quote yet are on CONCEPTS.html.
conceptstyle
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
concepts[2]
conceptstyle class
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concepts[4]
conceptstyle ambiguity
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
concepts[5]
conceptcollative variables
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concepts[6]
conceptnovelty
Quotation withheld — this paper is not ours to reproduce, and the page has already quoted as much of it as the rights layer allows. The tag, its field and its confidence stand; the sentence is at the publisher.
concepts[7]
Statistics — cross-field join keys
field-invariant statistical terms, used in their statistical sense (gated on a number / symbol / test). A p-value or a standard deviation means the SAME thing in physics, biology, psychology and sociology — so these are the strongest cross-field join keys. Grounded verbatim.
hypothesis-testing as written: hypothesis
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content_tags.statistics[0]
evidence status notehypothesis-testing — QUOTE REPAIRED: the extractor split a unicode and the quote was recorded faithfully with the damage in it, which made it unanchorable. The repaired string is an EXACT SUBSTRING of the staged text - that is why it was accepted, not because a rule produced it. The text as originally recorded is kept in evidence as extracted.content_tags.statistics[0]
null-hypothesis H0
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content_tags.statistics[1]
evidence status notenull-hypothesis — QUOTE REPAIRED: the extractor split a unicode and the quote was recorded faithfully with the damage in it, which made it unanchorable. The repaired string is an EXACT SUBSTRING of the staged text - that is why it was accepted, not because a rule produced it. The text as originally recorded is kept in evidence as extracted.content_tags.statistics[1]
p-value p
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content_tags.statistics[2]
standard-deviation SD/σ
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content_tags.statistics[3]
evidence status notestandard-deviation — QUOTE REPAIRED: the extractor split a hyphen-space and the quote was recorded faithfully with the damage in it, which made it unanchorable. The repaired string is an EXACT SUBSTRING of the staged text - that is why it was accepted, not because a rule produced it. The text as originally recorded is kept in evidence as extracted.content_tags.statistics[3]
t-test t
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content_tags.statistics[4]

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