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revision 2407 by marco.merot@gmail.com, Thu Oct 24 14:39:23 2013 UTC revision 2408 by marco.merot@gmail.com, Thu Jan 30 13:35:23 2014 UTC
# Line 157  Line 157 
157    <p>    <p>
158    In the next subsection a possible tagging solution, based upon the existing    In the next subsection a possible tagging solution, based upon the existing
159    <i>ContentLevel</i> element of VOResource, but requiring a small change    <i>ContentLevel</i> element of VOResource, but requiring a small change
160    to it is presented. The subsequent subsection describes the idea of a    to, it is presented. The subsequent subsection describes the idea of a
161    curated registry for educational resources and the reasons for it to exist.    curated registry for educational resources and the reasons for it to exist.
162    </p>    </p>
163  </div> <!-- subsection eduvspro -->  </div> <!-- subsection eduvspro -->
# Line 175  Line 175 
175    <ul><li>General</li><li>Research</li><li>Amateur</li></ul>    <ul><li>General</li><li>Research</li><li>Amateur</li></ul>
176    possible values may lead to both a better description of their resources    possible values may lead to both a better description of their resources
177    by data providers and a suitable tagging solution for a first filtering on    by data providers and a suitable tagging solution for a first filtering on
178    differently targeted resources at client level.    differently targeted resources at client level. Of course, the chance to
179      add and <i>Educational</i> value option to this shrinked list, or even
180      substitute it to the <i>General</i> one, would be a valuable change.
181    </p>    </p>
182    <p>    <p>
183    This change in the already existing standard will require only    This change in the already existing standard will require only
184    a small effort to update already registered resources because 97% of    a small effort to update already registered resources because nearly 97% of
185    them currently have ContentLevel set to <i>research</i>, 2% of them have    them currently have ContentLevel set to <i>research</i>, about 2% of them have
186    no ContentLevel defined and only the remaining 1% have a different value    no ContentLevel defined at all and only the remaining (about 1%) have a different value
187    (or set of values) set for this element (Appendix A details better these    (or set of values) set for this element (Appendix A details better these
188    figures).    figures).
189    </p>    </p>
# Line 193  Line 195 
195    a curated registry for educational VO resources will be useful for    a curated registry for educational VO resources will be useful for
196    educators to easily access the wanted data and services. A good example    educators to easily access the wanted data and services. A good example
197    for this is the educational version of the Aladin sky atlas, that has a    for this is the educational version of the Aladin sky atlas, that has a
198    built in curated set of resources suitable for educational level    built in, curated set of resources suitable for educational level
199    tutorials.    tutorials.
200    </p>    </p>
201    <p>    <p>
# Line 204  Line 206 
206    <p>    <p>
207    If such a registry were a standard local registry (<cite>[<a href="#std:RI1">std:RI1</a>]</cite>)    If such a registry were a standard local registry (<cite>[<a href="#std:RI1">std:RI1</a>]</cite>)
208    its resources would be harvested by the full registries: this means    its resources would be harvested by the full registries: this means
209    that any educational dedicated resource will go up to the full VO    that any educational dedicated resource will go into the full VO
210    set of resources, which is what we don't want to happen to keep the    set of resources, which is what we don't want to happen to keep the
211    <i>professional</i> side to be robust.    <i>professional</i> side robust.
212    </p>    </p>
213    <p>    <p>
214    If it were to be a full registry, it will harvest itself all the existing    If it were to be a full registry, it will harvest itself all the existing
# Line 310  Line 312 
312  <div class="section"><h2><a id="clcurrval" shape="rect"><span class="secnum">A. </span>ContentLevel values summary</a></h2>  <div class="section"><h2><a id="clcurrval" shape="rect"><span class="secnum">A. </span>ContentLevel values summary</a></h2>
313  <p>  <p>
314  This appendix reports some statistics on the usage of the ContentLevel  This appendix reports some statistics on the usage of the ContentLevel
315  element in <cite>[<a href="#std:VOR">std:VOR</a>]</cite> as of 2013-10-24, taken from the  element in <cite>[<a href="#std:VOR">std:VOR</a>]</cite> as of 2014-01-30, taken from the
316  GAVO RegTAP endpoint  GAVO RegTAP endpoint http://dc.g-vo.org/tap .
317  http://dc.zah.uni-heidelberg.de/__system__/tap/run/tap .  There are 14392 useful resources (excluding authorities, standards and
318  There are 14044 useful resources (excluding authorities, standards and  similar) that expose 26 different values as their ContentLevel.
 similar) that expose 27 different values as their ContentLevel.  
319  In the following table these values are reported in order of count.  In the following table these values are reported in order of count.
320  </p>  </p>
321  <p>  <p>
322  <table class="plain"><thead><tr><th rowspan="1" colspan="1">count</th><th rowspan="1" colspan="1">content_level string</th></tr></thead><tbody><tr class="even"><td rowspan="1" colspan="1">13623</td><td rowspan="1" colspan="1">research</td></tr><tr><td rowspan="1" colspan="1">279</td><td rowspan="1" colspan="1">&nbsp;</td></tr><tr class="even"><td rowspan="1" colspan="1">31</td><td rowspan="1" colspan="1">general#university#research#amateur</td></tr><tr><td rowspan="1" colspan="1">29</td><td rowspan="1" colspan="1">university#research</td></tr><tr class="even"><td rowspan="1" colspan="1">24</td><td rowspan="1" colspan="1">university</td></tr><tr><td rowspan="1" colspan="1">14</td><td rowspan="1" colspan="1">university#research#amateur</td></tr><tr class="even"><td rowspan="1" colspan="1">6</td><td rowspan="1" colspan="1">general</td></tr><tr><td rowspan="1" colspan="1">5</td><td rowspan="1" colspan="1">research#general</td></tr><tr class="even"><td rowspan="1" colspan="1">4</td><td rowspan="1" colspan="1">general#research</td></tr><tr><td rowspan="1" colspan="1">3</td><td rowspan="1" colspan="1">secondary education#community college#university#research#amateur</td></tr><tr class="even"><td rowspan="1" colspan="1">3</td><td rowspan="1" colspan="1">elementary education#middle school education#secondary education</td></tr><tr><td rowspan="1" colspan="1">3</td><td rowspan="1" colspan="1">research#university#community college</td></tr><tr class="even"><td rowspan="1" colspan="1">2</td><td rowspan="1" colspan="1">general#university#research</td></tr><tr><td rowspan="1" colspan="1">2</td><td rowspan="1" colspan="1">general#elementary education#middle school education#secondary education#community college#university#research#amateur#informal education</td></tr><tr class="even"><td rowspan="1" colspan="1">2</td><td rowspan="1" colspan="1">general#informal education</td></tr><tr><td rowspan="1" colspan="1">2</td><td rowspan="1" colspan="1">research#amateur#university#community college</td></tr><tr class="even"><td rowspan="1" colspan="1">2</td><td rowspan="1" colspan="1">research#university</td></tr><tr><td rowspan="1" colspan="1">1</td><td rowspan="1" colspan="1">general#university#research#informal education</td></tr><tr class="even"><td rowspan="1" colspan="1">1</td><td rowspan="1" colspan="1">research#university#amateur</td></tr><tr><td rowspan="1" colspan="1">1</td><td rowspan="1" colspan="1">university#research#general#informal education</td></tr><tr class="even"><td rowspan="1" colspan="1">1</td><td rowspan="1" colspan="1">general#secondary education#university#research</td></tr><tr><td rowspan="1" colspan="1">1</td><td rowspan="1" colspan="1">elementary education#middle school education#secondary education#community college#university#research#amateur</td></tr><tr class="even"><td rowspan="1" colspan="1">1</td><td rowspan="1" colspan="1">elementary education#middle school education#secondary education#community college#university#research#amateur#informal education</td></tr><tr><td rowspan="1" colspan="1">1</td><td rowspan="1" colspan="1">university#research#amateur#informal education</td></tr><tr class="even"><td rowspan="1" colspan="1">1</td><td rowspan="1" colspan="1">university#community college#research</td></tr><tr><td rowspan="1" colspan="1">1</td><td rowspan="1" colspan="1">general#university#research#amateur#informal education</td></tr><tr class="even"><td rowspan="1" colspan="1">1</td><td rowspan="1" colspan="1">elementary education#middle school education#secondary education#community college#university#research</td></tr></tbody></table>  <table class="plain"><thead><tr><th rowspan="1" colspan="1">count</th><th rowspan="1" colspan="1">content_level string</th></tr></thead><tbody><tr><td rowspan="1" colspan="1">13937</td><td rowspan="1" colspan="1">research</td></tr><tr><td rowspan="1" colspan="1">290</td><td rowspan="1" colspan="1">&nbsp;</td></tr><tr><td rowspan="1" colspan="1">41</td><td rowspan="1" colspan="1">university#research</td></tr><tr><td rowspan="1" colspan="1">40</td><td rowspan="1" colspan="1">general#university#research#amateur</td></tr><tr><td rowspan="1" colspan="1">24</td><td rowspan="1" colspan="1">university</td></tr><tr><td rowspan="1" colspan="1">14</td><td rowspan="1" colspan="1">university#research#amateur</td></tr><tr><td rowspan="1" colspan="1">7</td><td rowspan="1" colspan="1">general</td></tr><tr><td rowspan="1" colspan="1">5</td><td rowspan="1" colspan="1">research#general</td></tr><tr><td rowspan="1" colspan="1">4</td><td rowspan="1" colspan="1">general#research</td></tr><tr><td rowspan="1" colspan="1">3</td><td rowspan="1" colspan="1">secondary education#community college#university#research#amateur</td></tr><tr><td rowspan="1" colspan="1">3</td><td rowspan="1" colspan="1">research#university#community college</td></tr><tr><td rowspan="1" colspan="1">3</td><td rowspan="1" colspan="1">elementary education#middle school education#secondary education</td></tr><tr><td rowspan="1" colspan="1">3</td><td rowspan="1" colspan="1">general#university#research</td></tr><tr><td rowspan="1" colspan="1">2</td><td rowspan="1" colspan="1">research#university</td></tr><tr><td rowspan="1" colspan="1">2</td><td rowspan="1" colspan="1">research#amateur#university#community college</td></tr><tr><td rowspan="1" colspan="1">2</td><td rowspan="1" colspan="1">general#informal education</td></tr><tr><td rowspan="1" colspan="1">2</td><td rowspan="1" colspan="1">general#elementary education#middle school education#secondary education#community college#university#research#amateur#informal education</td></tr><tr><td rowspan="1" colspan="1">1</td><td rowspan="1" colspan="1">university#community college#research</td></tr><tr><td rowspan="1" colspan="1">1</td><td rowspan="1" colspan="1">general#university#research#amateur#informal education</td></tr><tr><td rowspan="1" colspan="1">1</td><td rowspan="1" colspan="1">elementary education#middle school education#secondary education#community college#university#research</td></tr><tr><td rowspan="1" colspan="1">1</td><td rowspan="1" colspan="1">general#secondary education#university#research</td></tr><tr><td rowspan="1" colspan="1">1</td><td rowspan="1" colspan="1">university#research#general#informal education</td></tr><tr><td rowspan="1" colspan="1">1</td><td rowspan="1" colspan="1">research#university#amateur</td></tr><tr><td rowspan="1" colspan="1">1</td><td rowspan="1" colspan="1">elementary education#middle school education#secondary education#community college#university#research#amateur</td></tr><tr><td rowspan="1" colspan="1">1</td><td rowspan="1" colspan="1">elementary education#middle school education#secondary education#community college#university#research#amateur#informal education</td></tr><tr><td rowspan="1" colspan="1">1</td><td rowspan="1" colspan="1">university#research#amateur#informal education</td></tr><tr><td rowspan="1" colspan="1">1</td><td rowspan="1" colspan="1">general#university#research#informal education</td></tr></tbody></table>
323  </p>  </p>
324  <p>  <p>
325  This table can be easily updated from the same endpoint (or an analogue  This table can be easily updated from the same endpoint (or an analogue
# Line 332  Line 333 
333    res_type != 'vstd:servicestandard' and    res_type != 'vstd:servicestandard' and
334    res_type != 'vg:authority' and    res_type != 'vg:authority' and
335    res_type != 'vstd:standard' and    res_type != 'vstd:standard' and
336      res_type != 'va:application' and
337    res_type != 'vr:organization'    res_type != 'vr:organization'
338  GROUP BY content_level  GROUP BY content_level
339  ORDER BY cnt DESC  ORDER BY cnt DESC
340  </pre>  </pre>
341  The table shows that only about 1% of the ContentLevel values use  The table shows that only about 1% of the ContentLevel values use
342  something different and more complex than <i>research</i>, when  something different and more complex than <i>research</i>, when
343  the element is not empty. Morever, of this 1% (142 resources), 56  the element is not empty. Morever, of this 1% (165 resources),
344  include the <i>general</i> value (roughly 40% of them), 27 (19%)  61 include the <i>general</i> value (roughly 37% of them),
345  state that are only devoted to some <i>educational</i> level, 36 (25%)  29 (17%) state that are devoted to some <i>education</i> level only,
346  can work both in <i>research</i> and <i>education</i> and the  while 148 (90%) state that are also devoted to some <i>education</i> level (up to <i>university</i>).
 remaining 23 (16%) report <i>research</i>, <i>amateur</i> and some  
 level of <i>education</i> alltogether.  
347  </p>  </p>
348  </div> <!-- end clcurrval-->  </div> <!-- end clcurrval-->
349  </div> <!-- end appendices -->  </div> <!-- end appendices -->
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