<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Wed, May 13, 2015 at 1:46 AM, Martin Koppenhoefer <span dir="ltr"><<a href="mailto:dieterdreist@gmail.com" target="_blank">dieterdreist@gmail.com</a>></span> wrote:<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra">I'm not convinced that such a generic approach will help to get unambiguous tagging, e.g.<br>children + education + building (= school building)  -> architectural school? language school? ...<br>vehicle + education (= driving school) -> self learning autonomous vehicles? school bus? a bus that offers educational services? ...<br>area + tree (= forest/wood) -> a big tree? an area foreseen for trees? an orchard? ...<br>building + sleep (= hotel/hostel/...) -> a motel? a dormitory? a matress factory? ...<br><br></div></div></blockquote><div><br></div><div>+1 well illustrated</div><div><br></div><div>The hierarchy approach sidesteps some of that</div><div><br></div></div></div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><div>building</div></div></div><div class="gmail_extra"><div class="gmail_quote"><div>what type of building?</div></div></div><div class="gmail_extra"><div class="gmail_quote"><div>school</div></div></div><div class="gmail_extra"><div class="gmail_quote"><div>what type of school?</div></div></div><div class="gmail_extra"><div class="gmail_quote"><div>elementary?</div></div></div><div class="gmail_extra"><div class="gmail_quote"><div>what type of elementary school?</div></div></div><div class="gmail_extra"><div class="gmail_quote"><div>Montessori</div></div></div><div class="gmail_extra"><div class="gmail_quote"><div>what type of Montessori elementary school?</div></div></div><div class="gmail_extra"><div class="gmail_quote"><div>eastern chapter</div></div></div></blockquote><div class="gmail_extra"><div class="gmail_quote"><div><br></div><div><br></div></div></div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><div>service</div></div></div><div class="gmail_extra"><div class="gmail_quote"><div>what type of service?</div></div></div><div class="gmail_extra"><div class="gmail_quote"><div>vehicle services</div></div></div><div class="gmail_extra"><div class="gmail_quote"><div>what type of vehicle service?</div></div></div><div class="gmail_extra"><div class="gmail_quote"><div>education</div></div></div><div class="gmail_extra"><div class="gmail_quote"><div>what type of vehicle service education?</div></div></div><div class="gmail_extra"><div class="gmail_quote"><div>driving school</div></div></div></blockquote><div class="gmail_extra"><div class="gmail_quote"><div><br></div><div><br></div><div><br></div><div>But I think it better to go the other way.  Start with the "duck":</div><div><br></div></div></div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><div>driving_school</div></div></div></blockquote><div class="gmail_extra"><div class="gmail_quote"><div><br></div><div>Then have a registry somewhere that puts that into context:</div><div><br></div></div></div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><div>driving school  =  place where a member of the public can sign up to learn vehicle operation</div></div></div><div class="gmail_extra"><div class="gmail_quote"><div><br></div></div></div><div class="gmail_extra"><div class="gmail_quote"><div>types of driving school:</div></div></div></blockquote><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><div>* private vehicle</div></div></div></blockquote><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><div>* taxi/commercial/paying passenger</div></div></div></blockquote><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><div>* heavy goods vehicle</div></div></div></blockquote><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><div>* specialty vehicle</div></div></div></blockquote><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div class="gmail_extra"><div class="gmail_quote"><div>    * forklift/equipment</div><div><br></div></div></div></blockquote><div class="gmail_extra"><div class="gmail_quote"><div>           driving school  + private_vehicle + fee =   things open to the general public, services, things you book in advance</div><div>           driving school  +  heavy goods vehicle+ fee =   services, specialty services</div><div> </div><div>Which other than the categories, pretty much is the wiki of today.</div><div><br></div></div></div></div>