<?xml version="1.0" encoding="utf-8"?>
<TEI xmlns="http://www.tei-c.org/ns/1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:hal="http://hal.archives-ouvertes.fr/" xmlns:gml="http://www.opengis.net/gml/3.3/" xmlns:gmlce="http://www.opengis.net/gml/3.3/ce" version="1.1" xsi:schemaLocation="http://www.tei-c.org/ns/1.0 http://api.archives-ouvertes.fr/documents/aofr-sword.xsd">
  <teiHeader>
    <fileDesc>
      <titleStmt>
        <title>HAL TEI export of hal-01334551</title>
      </titleStmt>
      <publicationStmt>
        <distributor>CCSD</distributor>
        <availability status="restricted">
          <licence target="https://creativecommons.org/publicdomain/zero/1.0/">CC0 1.0 - Universal</licence>
        </availability>
        <date when="2026-05-03T17:15:09+02:00"/>
      </publicationStmt>
      <sourceDesc>
        <p part="N">HAL API Platform</p>
      </sourceDesc>
    </fileDesc>
  </teiHeader>
  <text>
    <body>
      <listBibl>
        <biblFull>
          <titleStmt>
            <title xml:lang="en">Social-sparsity brain decoders: faster spatial sparsity</title>
            <author role="aut">
              <persName>
                <forename type="first">Gaël</forename>
                <surname>Varoquaux</surname>
              </persName>
              <email type="md5">5c9fb379c4e97b58960d74dcbfc5dee5</email>
              <email type="domain">normalesup.org</email>
              <idno type="idhal" notation="string">gael-varoquaux</idno>
              <idno type="idhal" notation="numeric">5878</idno>
              <idno type="halauthorid" notation="string">8362-5878</idno>
              <idno type="ORCID">https://orcid.org/0000-0003-1076-5122</idno>
              <idno type="IDREF">https://www.idref.fr/126239894</idno>
              <affiliation ref="#struct-56051"/>
              <affiliation ref="#struct-40417"/>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">Matthieu</forename>
                <surname>Kowalski</surname>
              </persName>
              <email type="md5">a2f9f0cca13065602591662ba95d30db</email>
              <email type="domain">u-psud.fr</email>
              <idno type="idhal" notation="string">mkowalski</idno>
              <idno type="idhal" notation="numeric">5106</idno>
              <idno type="halauthorid" notation="string">12949-5106</idno>
              <idno type="ORCID">https://orcid.org/0000-0002-9981-237X</idno>
              <idno type="IDREF">https://www.idref.fr/147702380</idno>
              <idno type="ISNI">http://isni.org/isni/0000000432299684</idno>
              <idno type="VIAF">https://viaf.org/viaf/212175175</idno>
              <affiliation ref="#struct-56051"/>
              <affiliation ref="#struct-1289"/>
            </author>
            <author role="aut">
              <persName>
                <forename type="first">Bertrand</forename>
                <surname>Thirion</surname>
              </persName>
              <idno type="idhal" notation="numeric">760493</idno>
              <idno type="halauthorid" notation="string">142896-760493</idno>
              <idno type="ORCID">https://orcid.org/0000-0001-5018-7895</idno>
              <idno type="IDREF">https://www.idref.fr/080779565</idno>
              <affiliation ref="#struct-40417"/>
              <affiliation ref="#struct-56051"/>
            </author>
            <editor role="depositor">
              <persName>
                <forename>Gaël</forename>
                <surname>Varoquaux</surname>
              </persName>
              <email type="md5">5c9fb379c4e97b58960d74dcbfc5dee5</email>
              <email type="domain">normalesup.org</email>
            </editor>
            <funder ref="#projeurop-88310"/>
          </titleStmt>
          <editionStmt>
            <edition n="v1" type="current">
              <date type="whenSubmitted">2016-06-20 23:52:03</date>
              <date type="whenModified">2026-02-06 11:36:02</date>
              <date type="whenReleased">2016-06-21 08:52:07</date>
              <date type="whenProduced">2016-06-22</date>
              <date type="whenEndEmbargoed">2016-06-20</date>
              <ref type="file" target="https://hal.science/hal-01334551v1/document">
                <date notBefore="2016-06-20"/>
              </ref>
              <ref type="file" subtype="author" n="1" target="https://hal.science/hal-01334551v1/file/paper.pdf" id="file-1334551-1414864">
                <date notBefore="2016-06-20"/>
              </ref>
              <ref type="externalLink" target="http://arxiv.org/pdf/1606.06439"/>
            </edition>
            <respStmt>
              <resp>contributor</resp>
              <name key="114973">
                <persName>
                  <forename>Gaël</forename>
                  <surname>Varoquaux</surname>
                </persName>
                <email type="md5">5c9fb379c4e97b58960d74dcbfc5dee5</email>
                <email type="domain">normalesup.org</email>
              </name>
            </respStmt>
          </editionStmt>
          <publicationStmt>
            <distributor>CCSD</distributor>
            <idno type="halId">hal-01334551</idno>
            <idno type="halUri">https://hal.science/hal-01334551</idno>
            <idno type="halBibtex">varoquaux:hal-01334551</idno>
            <idno type="halRefHtml">&lt;i&gt;Pattern Recognition in NeuroImaging&lt;/i&gt;, Jun 2016, Trento, Italy</idno>
            <idno type="halRef">Pattern Recognition in NeuroImaging, Jun 2016, Trento, Italy</idno>
            <availability status="restricted">
              <licence target="https://about.hal.science/hal-authorisation-v1/">HAL Authorization<ref corresp="#file-1334551-1414864"/></licence>
            </availability>
          </publicationStmt>
          <seriesStmt>
            <idno type="stamp" n="CEA">CEA - Commissariat à l'énergie atomique</idno>
            <idno type="stamp" n="CNRS">CNRS - Centre national de la recherche scientifique</idno>
            <idno type="stamp" n="INRIA">INRIA - Institut National de Recherche en Informatique et en Automatique</idno>
            <idno type="stamp" n="UNIV-PSUD">Université Paris Sud - Paris XI</idno>
            <idno type="stamp" n="INRIA-SACLAY" corresp="INRIA">INRIA Saclay - Ile de France</idno>
            <idno type="stamp" n="SUP_LSS">Laboratoire des Signaux et Systèmes</idno>
            <idno type="stamp" n="OPENAIRE">OpenAIRE</idno>
            <idno type="stamp" n="INRIA_TEST">INRIA - Institut National de Recherche en Informatique et en Automatique</idno>
            <idno type="stamp" n="SUP_SIGNAUX" corresp="SUP_LSS">Pôle Signaux</idno>
            <idno type="stamp" n="TESTALAIN1">TESTALAIN1</idno>
            <idno type="stamp" n="CENTRALESUPELEC">Ecole CentraleSupélec</idno>
            <idno type="stamp" n="INRIA2">INRIA 2</idno>
            <idno type="stamp" n="CEA-UPSAY" corresp="CEA">CEA - Université Paris-Saclay</idno>
            <idno type="stamp" n="UNIV-PARIS-SACLAY">Université Paris-Saclay</idno>
            <idno type="stamp" n="UNIV-PSUD-SACLAY" corresp="UNIV-PARIS-SACLAY">Université Paris Sud pour Paris Saclay</idno>
            <idno type="stamp" n="CEA-UPSAY-SACLAY" corresp="CEA">CEA-UPSAY-SACLAY</idno>
            <idno type="stamp" n="INRIA-SACLAY-2015" corresp="UNIV-PARIS-SACLAY">INRIA-SACLAY-2015</idno>
            <idno type="stamp" n="CENTRALESUPELEC-SACLAY" corresp="UNIV-PARIS-SACLAY">CENTRALESUPELEC-SACLAY</idno>
            <idno type="stamp" n="JOLIOT" corresp="CEA">Institut des Sciences du Vivant Frédéric JOLIOT</idno>
            <idno type="stamp" n="CEA-DRF" corresp="CEA">Direction de Recherche Fondamentale</idno>
            <idno type="stamp" n="NEUROSPIN" corresp="JOLIOT">Département NEUROSPIN</idno>
            <idno type="stamp" n="GS-ENGINEERING">Graduate School Sciences de l'Ingénierie et des Systèmes</idno>
            <idno type="stamp" n="GS-COMPUTER-SCIENCE">Graduate School Computer Science</idno>
          </seriesStmt>
          <notesStmt>
            <note type="audience" n="2">International</note>
            <note type="invited" n="0">No</note>
            <note type="popular" n="0">No</note>
            <note type="peer" n="1">Yes</note>
            <note type="proceedings" n="0">No</note>
          </notesStmt>
          <sourceDesc>
            <biblStruct>
              <analytic>
                <title xml:lang="en">Social-sparsity brain decoders: faster spatial sparsity</title>
                <author role="aut">
                  <persName>
                    <forename type="first">Gaël</forename>
                    <surname>Varoquaux</surname>
                  </persName>
                  <email type="md5">5c9fb379c4e97b58960d74dcbfc5dee5</email>
                  <email type="domain">normalesup.org</email>
                  <idno type="idhal" notation="string">gael-varoquaux</idno>
                  <idno type="idhal" notation="numeric">5878</idno>
                  <idno type="halauthorid" notation="string">8362-5878</idno>
                  <idno type="ORCID">https://orcid.org/0000-0003-1076-5122</idno>
                  <idno type="IDREF">https://www.idref.fr/126239894</idno>
                  <affiliation ref="#struct-56051"/>
                  <affiliation ref="#struct-40417"/>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">Matthieu</forename>
                    <surname>Kowalski</surname>
                  </persName>
                  <email type="md5">a2f9f0cca13065602591662ba95d30db</email>
                  <email type="domain">u-psud.fr</email>
                  <idno type="idhal" notation="string">mkowalski</idno>
                  <idno type="idhal" notation="numeric">5106</idno>
                  <idno type="halauthorid" notation="string">12949-5106</idno>
                  <idno type="ORCID">https://orcid.org/0000-0002-9981-237X</idno>
                  <idno type="IDREF">https://www.idref.fr/147702380</idno>
                  <idno type="ISNI">http://isni.org/isni/0000000432299684</idno>
                  <idno type="VIAF">https://viaf.org/viaf/212175175</idno>
                  <affiliation ref="#struct-56051"/>
                  <affiliation ref="#struct-1289"/>
                </author>
                <author role="aut">
                  <persName>
                    <forename type="first">Bertrand</forename>
                    <surname>Thirion</surname>
                  </persName>
                  <idno type="idhal" notation="numeric">760493</idno>
                  <idno type="halauthorid" notation="string">142896-760493</idno>
                  <idno type="ORCID">https://orcid.org/0000-0001-5018-7895</idno>
                  <idno type="IDREF">https://www.idref.fr/080779565</idno>
                  <affiliation ref="#struct-40417"/>
                  <affiliation ref="#struct-56051"/>
                </author>
              </analytic>
              <monogr>
                <meeting>
                  <title>Pattern Recognition in NeuroImaging</title>
                  <date type="start">2016-06-22</date>
                  <date type="end">2016-06-24</date>
                  <settlement>Trento</settlement>
                  <country key="IT">Italy</country>
                </meeting>
                <imprint>
                  <date type="datePub">2016-06-22</date>
                </imprint>
              </monogr>
              <idno type="arxiv">1606.06439</idno>
              <ref type="publisher">http://prni2016.wix.com/prni2016</ref>
            </biblStruct>
          </sourceDesc>
          <profileDesc>
            <langUsage>
              <language ident="en">English</language>
            </langUsage>
            <textClass>
              <keywords scheme="author">
                <term xml:lang="en">spatial regularization</term>
                <term xml:lang="en">sparsity</term>
                <term xml:lang="en">brain decoding</term>
              </keywords>
              <classCode scheme="halDomain" n="info.info-ts">Computer Science [cs]/Signal and Image Processing</classCode>
              <classCode scheme="halDomain" n="math.math-st">Mathematics [math]/Statistics [math.ST]</classCode>
              <classCode scheme="halDomain" n="stat.ml">Statistics [stat]/Machine Learning [stat.ML]</classCode>
              <classCode scheme="halDomain" n="sdv.ib.ima">Life Sciences [q-bio]/Bioengineering/Imaging</classCode>
              <classCode scheme="halDomain" n="sdv.neu.sc">Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Cognitive Sciences</classCode>
              <classCode scheme="halTypology" n="COMM">Conference papers</classCode>
              <classCode scheme="halOldTypology" n="COMM">Conference papers</classCode>
              <classCode scheme="halTreeTypology" n="COMM">Conference papers</classCode>
            </textClass>
            <abstract xml:lang="en">
              <p>—Spatially-sparse predictors are good models for brain decoding: they give accurate predictions and their weight maps are interpretable as they focus on a small number of regions. However, the state of the art, based on total variation or graph-net, is computationally costly. Here we introduce sparsity in the local neighborhood of each voxel with social-sparsity, a structured shrinkage operator. We find that, on brain imaging classification problems, social-sparsity performs almost as well as total-variation models and better than graph-net, for a fraction of the computational cost. It also very clearly outlines predictive regions. We give details of the model and the algorithm.</p>
            </abstract>
          </profileDesc>
        </biblFull>
      </listBibl>
    </body>
    <back>
      <listOrg type="structures">
        <org type="researchteam" xml:id="struct-56051" status="OLD">
          <idno type="RNSR">200919007A</idno>
          <orgName>Modelling brain structure, function and variability based on high-field MRI data</orgName>
          <orgName type="acronym">PARIETAL</orgName>
          <date type="start">2009-07-01</date>
          <date type="end">2022-03-31</date>
          <desc>
            <address>
              <addrLine>Neurospin, CEA Saclay, Bâtiment 145, 91191 Gif-sur-Yvette Cedex</addrLine>
              <country key="FR"/>
            </address>
          </desc>
          <listRelation>
            <relation active="#struct-40417" type="direct"/>
            <relation active="#struct-419361" type="indirect"/>
            <relation active="#struct-487603" type="indirect"/>
            <relation name="DRF" active="#struct-300016" type="indirect"/>
            <relation active="#struct-118511" type="direct"/>
            <relation active="#struct-300009" type="indirect"/>
          </listRelation>
        </org>
        <org type="laboratory" xml:id="struct-40417" status="VALID">
          <idno type="RNSR">201722552U</idno>
          <orgName>Service NEUROSPIN</orgName>
          <orgName type="acronym">NEUROSPIN</orgName>
          <desc>
            <address>
              <country key="FR"/>
            </address>
            <ref type="url">https://joliot.cea.fr/drf/joliot/recherche/neurospin</ref>
          </desc>
          <listRelation>
            <relation active="#struct-419361" type="direct"/>
            <relation active="#struct-487603" type="direct"/>
            <relation name="DRF" active="#struct-300016" type="indirect"/>
          </listRelation>
        </org>
        <org type="laboratory" xml:id="struct-1289" status="OLD">
          <idno type="IdRef">133818799</idno>
          <idno type="RNSR">199812842X</idno>
          <orgName>Laboratoire des signaux et systèmes</orgName>
          <orgName type="acronym">L2S</orgName>
          <date type="end">2019-12-31</date>
          <desc>
            <address>
              <addrLine>Plateau de Moulon 3 rue Joliot Curie 91192 GIF SUR YVETTE CEDEX</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">http://www.l2s.centralesupelec.fr/</ref>
          </desc>
          <listRelation>
            <relation active="#struct-92966" type="direct"/>
            <relation active="#struct-411575" type="direct"/>
            <relation name="UMR8506" active="#struct-441569" type="direct"/>
          </listRelation>
        </org>
        <org type="institution" xml:id="struct-419361" status="VALID">
          <idno type="IdRef">241345251</idno>
          <idno type="ROR">https://ror.org/03xjwb503</idno>
          <orgName>Université Paris-Saclay</orgName>
          <desc>
            <address>
              <addrLine>Bâtiment Bréguet, 3 Rue Joliot Curie 2e ét, 91190 Gif-sur-Yvette</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">https://www.universite-paris-saclay.fr/fr</ref>
          </desc>
        </org>
        <org type="regrouplaboratory" xml:id="struct-487603" status="VALID">
          <idno type="IdRef">262253712</idno>
          <idno type="RNSR">201722498K</idno>
          <idno type="ROR">https://ror.org/016pnwd02</idno>
          <idno type="Wikidata">Q61933008</idno>
          <orgName>Institut des Sciences du Vivant Frédéric JOLIOT</orgName>
          <orgName type="acronym">JOLIOT</orgName>
          <date type="start">2017-01-01</date>
          <desc>
            <address>
              <addrLine>DRFCEAGif-sur-Yvette</addrLine>
              <country key="FR"/>
            </address>
          </desc>
          <listRelation>
            <relation name="DRF" active="#struct-300016" type="direct"/>
          </listRelation>
        </org>
        <org type="institution" xml:id="struct-300016" status="VALID">
          <idno type="IdRef">026372061</idno>
          <idno type="ISNI">0000000122998025</idno>
          <idno type="ROR">https://ror.org/00jjx8s55</idno>
          <idno type="Wikidata">Q868550</idno>
          <orgName>Commissariat à l'énergie atomique et aux énergies alternatives</orgName>
          <orgName type="acronym">CEA</orgName>
          <desc>
            <address>
              <addrLine>Centre de SaclayCentre de GrenobleCentre de Cadaracheetc</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">http://www.cea.fr/</ref>
          </desc>
        </org>
        <org type="laboratory" xml:id="struct-118511" status="VALID">
          <idno type="RNSR">200818248E</idno>
          <idno type="ROR">https://ror.org/0315e5x55</idno>
          <orgName>Centre Inria de Saclay</orgName>
          <desc>
            <address>
              <addrLine>1 rue Honoré d'Estienne d'OrvesBâtiment Alan TuringCampus de l'École Polytechnique91120 Palaiseau</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">http://www.inria.fr/centre/saclay</ref>
          </desc>
          <listRelation>
            <relation active="#struct-300009" type="direct"/>
          </listRelation>
        </org>
        <org type="institution" xml:id="struct-300009" status="VALID">
          <idno type="ROR">https://ror.org/02kvxyf05</idno>
          <orgName>Institut National de Recherche en Informatique et en Automatique</orgName>
          <orgName type="acronym">Inria</orgName>
          <desc>
            <address>
              <addrLine>Domaine de VoluceauRocquencourt - BP 10578153 Le Chesnay Cedex</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">http://www.inria.fr/en/</ref>
          </desc>
        </org>
        <org type="institution" xml:id="struct-92966" status="OLD">
          <idno type="ROR">https://ror.org/028rypz17</idno>
          <orgName>Université Paris-Sud - Paris 11</orgName>
          <orgName type="acronym">UP11</orgName>
          <date type="end">2019-12-31</date>
          <desc>
            <address>
              <addrLine>Bâtiment 300 - 91405 Orsay cedex</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">http://www.u-psud.fr/</ref>
          </desc>
        </org>
        <org type="institution" xml:id="struct-411575" status="VALID">
          <idno type="IdRef">184443237</idno>
          <idno type="ROR">https://ror.org/019tcpt25</idno>
          <orgName>CentraleSupélec</orgName>
          <desc>
            <address>
              <addrLine>3, rue Joliot Curie,Plateau de Moulon,91192 GIF-SUR-YVETTE Cedex</addrLine>
              <country key="FR"/>
            </address>
            <ref type="url">http://www.centralesupelec.fr</ref>
          </desc>
        </org>
        <org type="regroupinstitution" xml:id="struct-441569" status="VALID">
          <idno type="IdRef">02636817X</idno>
          <idno type="ISNI">0000000122597504</idno>
          <idno type="ROR">https://ror.org/02feahw73</idno>
          <orgName>Centre National de la Recherche Scientifique</orgName>
          <orgName type="acronym">CNRS</orgName>
          <date type="start">1939-10-19</date>
          <desc>
            <address>
              <country key="FR"/>
            </address>
            <ref type="url">https://www.cnrs.fr/</ref>
          </desc>
        </org>
      </listOrg>
      <listOrg type="projects">
        <org type="europeanProject" xml:id="projeurop-88310" status="VALID">
          <idno type="number">284941</idno>
          <idno type="program">FP7-ICT-2011-FET-F</idno>
          <idno type="call">FP7-ICT-2011-FET-F</idno>
          <orgName>HBP</orgName>
          <desc>Human Brain Project</desc>
          <date type="start">2011-01-05</date>
          <date type="end">2012-04-30</date>
        </org>
      </listOrg>
    </back>
  </text>
</TEI>