<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:12.0pt;
font-family:"Calibri",sans-serif;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
/* List Definitions */
@list l0
{mso-list-id:75133313;
mso-list-template-ids:1075343000;}
@list l0:level1
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level2
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:1.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:"Courier New";
mso-bidi-font-family:"Times New Roman";}
@list l0:level3
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:1.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l0:level4
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:2.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l0:level5
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:2.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l0:level6
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:3.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l0:level7
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:3.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l0:level8
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:4.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
@list l0:level9
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:4.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Wingdings;}
ol
{margin-bottom:0in;}
ul
{margin-bottom:0in;}
--></style>
</head>
<body lang="EN-US" link="#0563C1" vlink="#954F72">
<div class="WordSection1">
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-family:"Arial",sans-serif;color:black">Hello!</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-family:"Arial",sans-serif;color:black">The BIDS community is proud to announce the release of Common Derivatives! Derivatives are the outputs of preprocessing pipelines, capturing data and meta-data
sufficient for a researcher to understand and (critically) reuse those outputs in subsequent pipelines. This specification can be found at:
</span><a href="https://bids-specification.readthedocs.io/en/stable/05-derivatives/01-introduction.html"><span style="font-family:"Arial",sans-serif;color:black">https://bids-specification.readthedocs.io/en/stable/05-derivatives/01-introduction.html</span></a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-family:"Arial",sans-serif;color:black">Common principles for derivative datasets: </span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<ul style="margin-top:0in" type="disc">
<li style="color:black;margin-top:0in;margin-bottom:0in;margin-bottom:.0001pt;mso-list:l0 level1 lfo1;vertical-align:baseline">
<span style="font-family:"Arial",sans-serif">Derivative datasets describe the contents of the dataset, the methods by which it was generated, and the original dataset(s) that were used to generate it. This metadata is mandatory at the dataset level and optional
at the file level.<o:p></o:p></span></li><li style="color:black;margin-top:0in;margin-bottom:0in;margin-bottom:.0001pt;mso-list:l0 level1 lfo1;vertical-align:baseline">
<span style="font-family:"Arial",sans-serif">Derivative files must be distinguishable from raw files. A generic description (desc-) entity allows this if no other entity applies.<o:p></o:p></span></li><li style="color:black;margin-top:0in;margin-bottom:0in;margin-bottom:.0001pt;mso-list:l0 level1 lfo1;vertical-align:baseline">
<span style="font-family:"Arial",sans-serif">The spatial interpretation of data, if applicable, can be specified with a space entity and SpatialReference metadata.<o:p></o:p></span></li></ul>
<p class="MsoNormal"><o:p> </o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-family:"Arial",sans-serif;color:black">Releasing the common principles for derivative datasets will enable further progress into our modality specific derivative initiatives such as,
</span><a href="https://github.com/bids-standard/bep021"><span style="font-family:"Arial",sans-serif;color:#1155CC">electrophysiological</span></a><span style="font-family:"Arial",sans-serif;color:black">, PET, and
</span><a href="https://github.com/bids-standard/bids-bep016"><span style="font-family:"Arial",sans-serif;color:black">diffusion MRI</span></a><span style="font-family:"Arial",sans-serif;color:black">. Our immediate attention will shift to focus on specifying
anatomical and functional derivatives (Look out for the pull requests soon!). </span>
<a href="https://github.com/bids-standard/bids-specification/pull/487"><span style="font-family:"Arial",sans-serif;color:black">BEP 028: (provenance)</span></a><span style="font-family:"Arial",sans-serif;color:black"> is a closely related effort that we hope
to see progress quickly as well! </span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-family:"Arial",sans-serif;color:black">We would like to thank our incredible community of contributors and members that helped push this extension over the finish line!</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-family:"Arial",sans-serif;color:black">Thank you,</span><o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt"><span style="font-family:"Arial",sans-serif;color:black">Chris and Franklin - BIDS Maintainers</span><o:p></o:p></p>
</div>
</body>
</html>