<?xml version="1.0" encoding="UTF-8"?>
<TEI xmlns="http://www.tei-c.org/ns/1.0" xml:lang="en">
  <teiHeader>
    <fileDesc>
      <titleStmt>
        <title>A Neural Algorithm of Artistic Style</title>
        <author>Leon A. Gatys</author>
        <author>Alexander S. Ecker</author>
        <author>Matthias Bethge</author>
      </titleStmt>
      <publicationStmt>
        <p>Tag layer of the DHSS Meta-Tagging Project. The article text is reproduced from the
           staged copy named in sourceDesc and is not altered; the tags are held separately in
           standOff so that overlapping and nested spans are preserved.</p>
      </publicationStmt>
      <sourceDesc>
        <bibl>
          <title>A Neural Algorithm of Artistic Style</title>
          <date>2015</date>
          <publisher>arXiv preprint</publisher>
          
          <idno type="arXiv">1508.06576</idno>
          <idno type="record">gatys2015-style-transfer</idno>
          <note type="staged-file">gatys2015-style-transfer.txt, the project's staged copy</note>
          <note type="text-sha1">1a62e230dce3258bdb715c2b08baac4175d9a30b</note>
          <note type="rights">arxiv-open</note>
        </bibl>
      </sourceDesc>
    </fileDesc>
    <profileDesc>
      <textClass><keywords><term>art-history</term></keywords></textClass>
      <particDesc>
        <person xml:id="paper"><p>the paper's own words</p></person>
        <person xml:id="tagger"><p>the tag layer; a sentence written by the tagger about the
          paper, always anchored to a quotation but not itself a quotation</p></person>
      </particDesc>
    </profileDesc>
    <revisionDesc>
      <change when="2026-10-06"
              who="build_paper_edition.py">0 spans located by searching the stored text for the quote's exact words, allowing any whitespace between them</change>
    </revisionDesc>
  </teiHeader>
  <standOff>
    <spanGrp type="tags">
      <span xml:id="t0" type="claim_type" ana="#claim_type" resp="#paper">
        <label>existence</label>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t1" type="phenomenon" ana="#phenomenon" resp="#paper">
        <label>separation of image content and style in CNN representations</label>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t2" type="method" ana="#method" resp="#paper">
        <label>system-or-tool-building</label>
        <term>system-or-tool-building</term>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t3" type="mechanisms" ana="#mechanisms[0]" resp="#tagger">
        <label>mechanisms</label>
        <term>separating and recombining the content and style representations that a CNN learns across its layers</term>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t4" type="limitations" ana="#limitations[0]" resp="#tagger">
        <label>image content and style cannot be completely disentangled</label>
        <note>what this limits: any claim that the method separates content from style: OF COURSE, IMAGE CONTENT AND STYLE CANNOT BE COMPLETELY DISENTANGLED</note>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t5" type="limitations" ana="#limitations[1]" resp="#tagger">
        <label>Content and style are not fully independent, so the separation is only partial.</label>
        <note>what this limits: the same scope as limitations[0] - the separation is partial, and the paper says so in its own framing</note>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t6" type="limitations" ana="#limitations[2]" resp="#tagger">
        <label>No image satisfies both the content and the style constraint perfectly; a trade-off has to be tuned per image pair.</label>
        <note>what this limits: every output image: THERE USUALLY DOES NOT EXIST AN IMAGE THAT PERFECTLY MATCHES BOTH CONSTRAINTS AT THE SAME TIME, so the result is a trade-off tuned per image pair</note>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t7" type="limitations" ana="#limitations[3]" resp="#tagger" cert="1.0">
        <label>What the paper calls style is a texture statistic that discards the composition of the image, in a feature space built for something else.</label>
        <note>what this limits: any reading of this system&#x27;s style as a style in the art-historical sense: it is computed in a feature space originally designed to capture texture information, and the resulting representation captures texture but not the global arrangement of the image</note>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t8" type="limitations" ana="#limitations[4]" resp="#tagger" cert="1.0">
        <label>The headline separability claim is demonstrated in the objective function, which is where the two terms are separated.</label>
        <note>what this limits: the claim that content and style are separable: what is shown is that the minimised loss function contains two well-separated terms for content and style, which is a property of the objective the authors wrote</note>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t9" type="limitations" ana="#limitations[5]" resp="#tagger" cert="1.0">
        <label>Which image you get is set by a balance the user picks for each pair of sources.</label>
        <note>what this limits: any output shown here as a result of the method: for a specific pair of source images the trade-off between content and style is adjusted by hand to create visually appealing images</note>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t10" type="limitations" ana="#limitations[6]" resp="#tagger" cert="1.0">
        <label>The use for perception research is projected, not carried out.</label>
        <note>what this limits: the claim that this method is a tool for studying visual perception: the authors envision it being useful for such studies, from psychophysics to neural recordings, rather than reporting one</note>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t11" type="transfers" ana="#transfers[0]" resp="#tagger">
        <label>convolutional neural networks trained for object recognition, repurposed to synthesize artistic images</label>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t12" type="concepts" ana="#concepts[3]" resp="#paper">
        <label>style</label>
        <term>style</term>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t13" type="concepts" ana="#concepts[4]" resp="#paper">
        <label>style representation</label>
        <term>style representation</term>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t14" type="concepts" ana="#concepts[5]" resp="#paper">
        <label>content representation</label>
        <term>content representation</term>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t15" type="concepts" ana="#concepts[6]" resp="#paper">
        <label>Gram matrix</label>
        <term>Gram matrix</term>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t16" type="concepts" ana="#concepts[7]" resp="#paper">
        <label>feature space</label>
        <term>feature space</term>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t17" type="senses" ana="#senses[0]" resp="#tagger" cert="1.0">
        <label>style - AS CORRELATIONS BETWEEN FILTER RESPONSES: a Gram matrix over a layer&#x27;s feature maps, which is a texture statistic and not an art-historical category, and which by construction throws away where things are in the picture</label>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t18" type="senses" ana="#senses[1]" resp="#tagger" cert="1.0">
        <label>content - AS A LAYER&#x27;S FEATURE MAPS: what can be reconstructed from the network&#x27;s responses in a particular layer, so &#x27;the content of an image&#x27; means whatever survives that reconstruction</label>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t19" type="senses" ana="#senses[2]" resp="#tagger" cert="1.0">
        <label>&#x27;style transfer&#x27; IN THIS PAPER - THE PRIOR WORK IT IS NOT: the single occurrence names earlier non-parametric methods that manipulate pixels directly, and the sentence after it distinguishes this approach from them; the field&#x27;s own name for this paper, &#x27;neural style transfer&#x27;, is absent</label>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t20" type="claim_relations" ana="#claim_relations[0]" resp="#tagger">
        <label>builds-on → Deep Neural Networks for object recognition</label>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t21" type="claim_relations" ana="#claim_relations[1]" resp="#tagger">
        <label>builds-on → the VGG-Network (ref. 22)</label>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t22" type="claim_relations" ana="#claim_relations[2]" resp="#tagger">
        <label>builds-on → the texture feature space of ref. 8</label>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t23" type="claim_relations" ana="#claim_relations[3]" resp="#tagger">
        <label>extends → earlier content/style separation work (refs. 12, 13)</label>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t24" type="concept_edges" ana="#concept_edges[0]" resp="#tagger">
        <label>style representation —operationalised-as→ Gram matrix</label>
        <term>style representation</term>
        <term>Gram matrix</term>
        <note>strength of the relation: 1
Audit 2026-09-28: DOUBTFUL - read against its full span and kept, but endpoint by anaphora: &#x27;These feature correlations&#x27; = the style representation (previous sentence).</note>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t25" type="concept_edges" ana="#concept_edges[1]" resp="#tagger">
        <label>EVIDENCE CORRECTED (RE-GROUNDED) · style representation —distinct-from→ content representation</label>
        <term>style representation</term>
        <term>content representation</term>
        <note>EVIDENCE CORRECTED: RE-GROUNDED. The old span named neither representation as the edge writes them. This sentence names both and is the one that separates them - the method&#x27;s whole premise is that a photograph&#x27;s CONTENT and an artwork&#x27;s STYLE can be matched independently. — strength of the relation: 1
Audit 2026-09-28: DOUBTFUL - read against its full span and kept, but the span writes &#x27;the representations of content and style ... are separable&#x27;, not &#x27;content representation&#x27;.</note>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t26" type="content_tags" ana="#content_tags.findings[0]" resp="#tagger">
        <label>The system uses neural representations to separate and recombine the content and style of arbitrary images, giving a neural algorithm for creating artistic images.</label>
        <note>about this quote: 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.</note>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t27" type="content_tags" ana="#content_tags.definitions[0]" resp="#tagger">
        <label>style representation</label>
        <term>style representation</term>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t28" type="content_tags" ana="#content_tags.definitions[1]" resp="#tagger">
        <label>convolutional neural network</label>
        <term>convolutional neural network</term>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
      <span xml:id="t29" type="content_tags" ana="#content_tags.statistics[0]" resp="#tagger">
        <label>standard-error</label>
        <term>standard-error</term>
        <note>about this quote: DAMAGED GLYPHS IN THIS QUOTE: (cid:126). These are raw PDF font glyph indices that leaked out in place of the characters they stand for - usually a mathematical operator. The quote is verbatim to the staged text and its anchor is sound; the STAGED TEXT is what is damaged. NOT repaired: the cid-to-character mapping is defined by the font embedded in that particular PDF, so guessing it would produce a clean and unverifiable quote. Repair needs the source PDF and is a re-staging job.</note>
        <note type="quotation-withheld">Quotation withheld because this record is not cleared for redistribution.</note>
      </span>
    </spanGrp>
  </standOff>
  <text>
    <body>
      <p><note type="rights">The full text of this article is not redistributable, so it is
      not included here. The evidence sentences are withheld with it; the tag layer and its
      grounding status remain. The article itself is at https://arxiv.org/abs/1508.06576.</note></p>
    </body>
  </text>
</TEI>
