<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1405-7743</journal-id>
<journal-title><![CDATA[Ingeniería, investigación y tecnología]]></journal-title>
<abbrev-journal-title><![CDATA[Ing. invest. y tecnol.]]></abbrev-journal-title>
<issn>1405-7743</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Facultad de Ingeniería]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-77432016000400419</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efecto de explicaciones sobre la confianza del usuario en sistemas de recomendación sensibles al contexto]]></article-title>
<article-title xml:lang="en"><![CDATA[Effect of Explanations on Users&#8217; Trust in Context-Aware Recommender Systems]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alejandres-Sánchez]]></surname>
<given-names><![CDATA[Hugo Omar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Serna]]></surname>
<given-names><![CDATA[Juan Gabriel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Franco]]></surname>
<given-names><![CDATA[Nimrod]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro Nacional de Investigación y Desarrollo Tecnológico Departamento de Ciencias Computacionales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro Nacional de Investigación y Desarrollo Tecnológico Departamento de Ciencias Computacionales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Centro Nacional de Investigación y Desarrollo Tecnológico Departamento de Ciencias Computacionales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<volume>17</volume>
<numero>4</numero>
<fpage>419</fpage>
<lpage>428</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-77432016000400419&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-77432016000400419&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-77432016000400419&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Las explicaciones en los sistemas de recomendación se han utilizado para mejorar componentes de la experiencia del usuario (EU). Se ha probado que las explicaciones son útiles para mejorar la percepción del usuario respecto a la satisfacción, y para persuadir al usuario de adoptar el sistema de recomendación. Este artículo se enfoca en la evaluación de la confianza del usuario de acuerdo con el sistema y sus relaciones con la comprensión y esfuerzo cognitivo que percibe, mediante el uso de explicaciones en un tipo específico de sistema de recomendación: sensible al contexto. Se realizó un experimento de usuario con un sistema de recomendación organizacional que provee recomendaciones de personas, lugares, eventos, objetos de conocimiento e infraestructura, usando tres tipos de explicación: mapas conceptuales, mapas mentales y explicaciones textuales. Los resultados muestran que, aunque los mapas conceptuales y mentales incrementan la comprensión de las recomendaciones y reducen el esfuerzo cognitivo percibido, las explicaciones textuales mejoran la confianza del usuario respecto al sistema, aun cuando requieren mayor esfuerzo cognitivo para comprenderlas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Explanations on recommender systems have been used to improve components of user experience. It has been proven that explanations are useful to enhance users&#8217; perception on satisfaction and persuade users to adopt the recommender system. This paper focuses on evaluating user trust and the trade-offs with understandability and cognitive effort by using explanations in a specific type of recommender system: context-aware. We performed an user experiment with an organizational recommender system that gives recommendations of people, places, events, knowledge objects and infrastructure, using three different types of explanations: conceptual maps, mind maps and textual explanation. The results show that although mind and conceptual maps increases users&#8217; understanding of recommendations and decreases cognitive effort, textual explanations improves the users&#8217; trust on the system even when they require much cognitive effort to be understood.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[experiencia del usuario]]></kwd>
<kwd lng="es"><![CDATA[evaluación de sistemas]]></kwd>
<kwd lng="es"><![CDATA[Findit!]]></kwd>
<kwd lng="es"><![CDATA[modelo de ecuaciones estructurales]]></kwd>
<kwd lng="es"><![CDATA[explicaciones]]></kwd>
<kwd lng="es"><![CDATA[estudios de usuario]]></kwd>
<kwd lng="es"><![CDATA[sensibilidad al contexto]]></kwd>
<kwd lng="en"><![CDATA[user experience]]></kwd>
<kwd lng="en"><![CDATA[system evaluation]]></kwd>
<kwd lng="en"><![CDATA[Findit!]]></kwd>
<kwd lng="en"><![CDATA[structural equation modeling]]></kwd>
<kwd lng="en"><![CDATA[explanations]]></kwd>
<kwd lng="en"><![CDATA[user studies]]></kwd>
<kwd lng="en"><![CDATA[context-awareness]]></kwd>
<kwd lng="en"><![CDATA[user trust]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Abowd]]></surname>
<given-names><![CDATA[G.D.]]></given-names>
</name>
<name>
<surname><![CDATA[Dey]]></surname>
<given-names><![CDATA[A.K.]]></given-names>
</name>
<name>
<surname><![CDATA[Brown]]></surname>
<given-names><![CDATA[P.J.]]></given-names>
</name>
<name>
<surname><![CDATA[Davies]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<source><![CDATA[Towards a better understanding of context and context-awareness]]></source>
<year>1999</year>
<conf-name><![CDATA[ 1stProceedings of the International Symposium on Handheld and Ubiquitous Computing]]></conf-name>
<conf-date>1999</conf-date>
<conf-loc>Londres, UK </conf-loc>
</nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Context relevance assessment and exploitation in mobile recommender systems]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Baltrunas]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Ludwig]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Peer]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Ricci]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<source><![CDATA[Personal and Ubiquitous Computing]]></source>
<year>2012</year>
<volume>16</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>507-26</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Pu]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<source><![CDATA[User evaluation framework of recommender systems]]></source>
<year>2010</year>
<conf-name><![CDATA[ proceedings of the joint workshop on interfaces and human decision making for recommender systems]]></conf-name>
<conf-date>2010</conf-date>
<conf-loc>Hong Kong, China </conf-loc>
</nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cohen]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Statistical power analysis for the behavioral sciences]]></source>
<year>1988</year>
<edition>2a</edition>
<publisher-name><![CDATA[Lawrence Erlbaum Associates]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Elahi]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ge]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ricci]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Fernández-Tobías]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Berkovsky]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Massimo]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<source><![CDATA[Interaction design in a mobile food recommender system]]></source>
<year>2015</year>
<conf-name><![CDATA[ proceedings of workshop on social recommender systems]]></conf-name>
<conf-date>2015</conf-date>
<conf-loc>Viena, Austria </conf-loc>
</nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gasparic]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ricci]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<source><![CDATA[Modeling context-aware command recommendation and acceptance in an IDE]]></source>
<year>2015</year>
<conf-name><![CDATA[ Proceedins of the second international workshop on context for software development]]></conf-name>
<conf-date>2015</conf-date>
<conf-loc>Nueva Jersey </conf-loc>
</nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[The effects of transparency on trust in and acceptance of a content-based art recommender]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Henriette]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Evers]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Ramlal]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Someren]]></surname>
<given-names><![CDATA[M.V.]]></given-names>
</name>
<name>
<surname><![CDATA[Rutledge]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Stash]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Aroyo]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Wielinga]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<source><![CDATA[User Modeling and User-Adapted Interaction]]></source>
<year>2008</year>
<volume>18</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>455-96</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Cutoff criteria for fit indexes in covariance structure analysis: Conventional criteria versus new alternatives]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hu]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Bentler]]></surname>
<given-names><![CDATA[P.M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Structural Equation Modeling: A Multidisciplinary Journal]]></source>
<year>1999</year>
<volume>6</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>1-5</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jedlitschka]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ciolkowski]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Pfahl]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Reporting experiments in software engineering]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Shull]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Singer]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Sjøberg]]></surname>
<given-names><![CDATA[D.I.K.]]></given-names>
</name>
</person-group>
<source><![CDATA[Guide to advanced empirical software engineering]]></source>
<year>2008</year>
<edition>1a</edition>
<page-range>201-28</page-range><publisher-name><![CDATA[Springer London]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Knijnenburg]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Bostandjiev]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[O&#8217;Donovan]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Kobsa]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Inspectability and control in social recommenders]]></source>
<year>2012</year>
<conf-name><![CDATA[ 6thProceedings of the ACM conference on recommender systems]]></conf-name>
<conf-date>2012</conf-date>
<conf-loc>Dublin </conf-loc>
<page-range>43-50</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Making decisions about privacy: information disclosure in context-aware recommender systems]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Knijnenburg]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Kobsa]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[ACM Transactions on Interactive Intelligent Systems]]></source>
<year>2013</year>
<volume>3</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>20</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Knijnenburg]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Willemsen]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluation recommender system with user experiments]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Ricci]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Rokach]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Shapira]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<source><![CDATA[Recommender Systems Handbook]]></source>
<year>2015</year>
<edition>2a</edition>
<page-range>309-52</page-range><publisher-name><![CDATA[Springer]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lim]]></surname>
<given-names><![CDATA[B.Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Dey]]></surname>
<given-names><![CDATA[A.K.]]></given-names>
</name>
<name>
<surname><![CDATA[Avrahami]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<source><![CDATA[Why and why not explanations improve the intelligibility of context-aware intelligent systems]]></source>
<year>2009</year>
<conf-name><![CDATA[ Proceedings of the SIGCHI conference on human factors in computing systems]]></conf-name>
<conf-date>2009</conf-date>
<conf-loc> </conf-loc>
<page-range>2119-28</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[El muestreo en investigación cualitativa. Principios básicos y algunas controversias]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Martínez-Salgado]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Revista Ciência &amp; Saúde Coletiva]]></source>
<year>2012</year>
<volume>17</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>613-9</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[McNee]]></surname>
<given-names><![CDATA[S.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Konstan]]></surname>
<given-names><![CDATA[J.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Riedl]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Being accurate is not enough: How accuracy metrics have hurt recommender systems]]></source>
<year>2006</year>
<conf-name><![CDATA[ the ACM conference on human factors in computing systems]]></conf-name>
<conf-date>2006</conf-date>
<conf-loc>Montreal, Canada </conf-loc>
<page-range>1097-101</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[O&#8217;Donovan]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Smyth]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<source><![CDATA[Trust in recommender systems]]></source>
<year>2005</year>
<conf-name><![CDATA[ 10thProceedings of the international conference on intelligent user interfaces]]></conf-name>
<conf-date>2005</conf-date>
<conf-loc>San Diego </conf-loc>
<page-range>167-74</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[Trust-inspiring explanation interfaces for recommender systems]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pu]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<source><![CDATA[Knowledge-Based Systems]]></source>
<year>2007</year>
<volume>20</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>542-56</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="">
<article-title xml:lang=""><![CDATA[Justi&#64257;ed recommendations based on content and rating data]]></article-title>
<person-group person-group-type="author">
<name>
<surname><![CDATA[Symeonidis]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Nanopoulos]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Manolopoulos]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
</person-group>
<source><![CDATA[Workshop on Web mining and Web usage analysis]]></source>
<year>2008</year>
<publisher-loc><![CDATA[Las Vegas ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tintarev]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Masthoff]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Explaining recommendations: Design and evaluation]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Ricci]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Rokach]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Shapira]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<source><![CDATA[Recommender Systems Handbook]]></source>
<year>2015</year>
<edition>2a</edition>
<page-range>353-82</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wholin]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Runeson]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Höst]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ohlsson]]></surname>
<given-names><![CDATA[M.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Regnell]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Wesslén]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Experimentation in software engineering]]></source>
<year>2012</year>
<edition>1a</edition>
<page-range>99- 55-72</page-range><publisher-name><![CDATA[Springer-Verlag Berlin Heidelberg]]></publisher-name>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
