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206 lines
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HTML
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<!--***********************CHANGE ISSUE DATE AND TITLE BELOW**********************-->
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<TITLE>PubMed: Publication Type Mapping. NLM Technical Bulletin. 2003 Mar-Apr</TITLE>
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<meta name="DC.Subject.IssueCover" content="/pubs/techbull/ma03/ma03_issue_cover.html" />
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<meta name="DC.Subject.Keyword" content="All Fields" />
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<meta name="DC.Subject.Keyword" content="Automatic Term Mapping" />
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<meta name="DC.Subject.Keyword" content="Indexing" />
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<meta name="DC.Subject.Keyword" content="Medical Literature Analysis and Retrieval System" />
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<meta name="DC.Subject.Keyword" content="Medical Subject Headings" />
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<meta name="DC.Subject.Keyword" content="MEDLINE" />
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<meta name="DC.Subject.Keyword" content="MeSH Terms" />
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<meta name="DC.Subject.Keyword" content="Publication Type" />
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<meta name="DC.Subject.Keyword" content="PubMed" />
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<meta name="DC.Subject.Keyword" content="Stopwords" />
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<meta name="DC.Subject.Keyword" content="Text Words" />
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<meta name="DC.Subject.Keyword" content="Update" />
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<TR><TD width="30"> </TD><TD width="470"><FONT size="2"><strong>March 05, 2003</strong> [posted]</font><BR></TD><TD width="30"> </TD></TR>
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<TR><TD width="30"> </TD><TD width="470">
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<!--************************INDICATE TITLE OF ARTICLE BELOW*********************-->
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<TR><TD width="30"> </TD><TD width="470"><FONT size="5"><STRONG>PubMed<SUP><FONT SIZE=-2>®</FONT></SUP>:
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Publication Type Mapping</STRONG></FONT><BR></TD><TD width="30"> </TD></TR>
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<TR><TD width="30"> </TD><TD width="470">
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<BR>
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<P>
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<!--************************Change graphic to match first letter of article*************************-->
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<IMG SRC="/pubs/techbull/new_tb_graphics/t.gif" BORDER=0 align="left" ALT="drop cap letter for t">
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he Medical Subject Headings (MeSH) Translation Table used in PubMed's Automatic Term Mapping
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has been enhanced to include Publication Types (PT) and their Entry Terms. For more information about
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Automatic Term Mapping, please see PubMed's
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<A HREF="http://www.ncbi.nlm.nih.gov:80/entrez/query/static/help/pmhelp.html#AutomaticTermMapping">
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Help</A>.
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This change will improve citation retrieval by publication type. Unqualified terms in a query will be
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searched as follows:
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</P>
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<UL>
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<LI>For a term represented by both a MeSH Heading (MH) and a Publication Type (PT), when the user
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enters the MH, the PT, or any of their Entry Terms, PubMed will map as follows:
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<BR><BR>
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Publication Type [PT] OR MeSH Term [MH] OR Term Entered by User [TW] <BR><BR>
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For example, when a user enters: clinical trials<BR>
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PubMed will search:<BR>
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("clinical trial"[Publication Type] OR "clinical trials"[MeSH Terms]) OR "clinical trials"[Text Word]
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<BR><BR>
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<LI>For a term represented only by a PT, when the user enters the PT or one of its entry terms,
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PubMed will map as follows:<BR><BR>
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Publication Type [PT] OR Term Entered by User [TW] <BR><BR>
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For example, when a user enters: commentary<BR>
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PubMed will search:<BR>
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("comment"[Publication Type] OR "commentary"[Text Word])
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</UL>
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<P>
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<STRONG>Background information:</STRONG><BR>
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Publication Type (PT) values are added to the MEDLINE citation during indexing to indicate the article's
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type of information or the manner in which it is conveyed. There are fifty-three publication types used
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for indexing (a complete list is available in PubMed
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<A HREF="http://www.ncbi.nlm.nih.gov:80/entrez/query/static/help/pmhelp.html#PublicationTypes">Help</A>).
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Twenty-seven of those PTs have a MeSH
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counterpart that is either the same (e.g., biography[pt], biography[mh]) or very similar (e.g.,
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clinical trial[pt], clinical trials[mh]).
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</P>
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<P>
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In the past, for most concepts represented by both MH and PT, when users entered an unqualified term,
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PubMed searched for the MH and the term entered as Text Word (TW). For example, if the user entered
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<EM>biography</EM>, PubMed searched for: ("biography"[MeSH Terms] OR biography[Text Word]), thus missing most
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citations indexed to Biography[Publication Type]. When users entered an unqualified term that was
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only represented by a PT, it was searched as "All Fields." As PT is included in All Fields, users
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retrieved citations indexed with the PT plus some false drops. A search using a PT Entry Term did
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not retrieve the publication type because PT Entry Terms were not recognized in PubMed. For example,
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Comment was not retrieved if commentary was entered.
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</P>
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<P>
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Note: <EM>Overall</EM> is a publication type and a stopword in PubMed. Users wishing to retrieve the publication type Overall, will need to qualify their query (e.g., overall[pt]).
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</P>
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<BR><BR>
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<P>
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<!--************************Indicate article author and section below*******************************-->
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<STRONG>By Norma I. Ruiz</STRONG><BR>
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<STRONG>MEDLARS Management Section</STRONG><BR>
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</P>
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<!--************************INDICATE INDEXING TERMS BELOW**********************-->
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<!--
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<P><STRONG>Indexing Terms</STRONG></P>
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<P>PubMed, Publication Type Mapping</P>
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<P>Publication Type Mapping see PubMed</P>
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<P>PubMed, Translation Tables</P>
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-->
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<!--************************END INDEXING TERMS*********************************-->
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<img src="/pubs/techbull/new_tb_graphics/black_pixel.gif" width="450" height="1" ALT="black line separting article from citation">
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<P>
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<!--************************CHANGE CITATION INFORMATION BELOW*****************************-->
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<EM>Ruiz NI. PubMed<SUP><FONT SIZE=-2>®</FONT></SUP>:
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Publication Type Mapping. NLM Tech Bull. 2003 Mar-Apr;(331):e1.</EM>
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<!--************************END CITATION INFORMATION********************************-->
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</P>
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<font size="2" face="helvetica, arial"><a href="/nlmhome.html">U.S. National Library of Medicine</a>, 8600 Rockville Pike, Bethesda, MD 20894<br /><a href="http://www.nih.gov/">National Institutes of Health</a>, <a href="//www.hhs.gov/">Department of Health & Human Services</a><br /><a href="/copyright.html">Copyright</a>, <a href="/privacy.html">Privacy</a>, <a href="/accessibility.html">Accessibility</a>, <a href="http://www.nih.gov/icd/od/foia/index.htm">Freedom of Information Act (FOIA)</a><br/><a href="https://www.hhs.gov/vulnerability-disclosure-policy/index.html">HHS Vulnerability Disclosure</a>
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Last updated: 11 April 2012
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