{"guid":"e7e27d89-89b1-5481-a909-84d4636cb279","title":"Boundaries, Places and the Future of Tagging","subtitle":null,"slug":"sotm2021-10046-boundaries-places-and-the-future-of-tagging","link":"https://2021.stateofthemap.org/sessions/QUHKNR/","description":"Nominatim, the well-know OSM search engine,\nhas recently received a major update of the algorithm that computes addresses\nfrom the boundaries and places in OSM. This talk first introduces the new\nalgorithm, explains the background and how it translates to tagging.\nWe'll then take a step back and explore the larger\npicture what the evolution of tagging scheme of OpenStreetMap means for the users\nof the data.\n\nNominatim is the search engine that powers the search box on the main OSM site.\nOne of the fundamental steps of preparing OSM data for searching is the extraction\nof information about their location, commonly known as their address. This is not\na simple task because OSM data is much less structured than traditional databases\nand many users revert to using external data for this reason. However, the data\nis there and should therefore be usable. In the course of the last year the\naddress algorithm of Nominatim received a major overhaul to improve how addresses\nare generated from OpenStreetMap data.\n\nThe first part of the talk introduces the new algorithm and how it came to be.\nWe'll look into the current state of tagging of boundaries, the problem of\nthe urban/rural divide and the difficulties of country-specific mapping.\n\nThe second part of the talk deals with the more general question what the\nevolving tagging schema of the OpenStreetMap database means for data users.\nThe free-form tagging is one of the big strengths of OpenStreetMap. But the\nlack of rules does not necessarily have to mean lack of order. Using the\nexample of address extraction, I'd like to discuss the future of the tagging\nschema from the point of view of a data user.","original_language":"eng","persons":["Sarah Hoffmann"],"tags":["sotm2021","10046","2021","Mapping","OSM","OpenStreetMap"],"view_count":164,"promoted":false,"date":"2021-07-09T17:45:00.000+02:00","release_date":"2021-11-09T00:00:00.000+01:00","updated_at":"2026-03-27T08:30:06.366+01:00","length":2086,"duration":2086,"thumb_url":"https://static.media.ccc.de/media/events/sotm/2021/10046-e7e27d89-89b1-5481-a909-84d4636cb279.jpg","poster_url":"https://static.media.ccc.de/media/events/sotm/2021/10046-e7e27d89-89b1-5481-a909-84d4636cb279_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/sotm/2021/10046-e7e27d89-89b1-5481-a909-84d4636cb279.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/sotm/2021/10046-e7e27d89-89b1-5481-a909-84d4636cb279.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/sotm2021-10046-boundaries-places-and-the-future-of-tagging","url":"https://api.media.ccc.de/public/events/e7e27d89-89b1-5481-a909-84d4636cb279","conference_title":"State of the Map 2021","conference_url":"https://api.media.ccc.de/public/conferences/sotm2021","related":[],"recordings":[{"size":204,"length":2086,"mime_type":"video/webm","language":"eng-rus","filename":"sotm2021-10046-eng-rus-Boundaries_Places_and_the_Future_of_Tagging_webm-hd.webm","state":"new","folder":"webm-hd","high_quality":true,"width":1920,"height":1080,"updated_at":"2021-11-09T20:36:10.667+01:00","recording_url":"https://cdn.media.ccc.de/events/sotm/2021/webm-hd/sotm2021-10046-eng-rus-Boundaries_Places_and_the_Future_of_Tagging_webm-hd.webm","url":"https://api.media.ccc.de/public/recordings/55017","event_url":"https://api.media.ccc.de/public/events/e7e27d89-89b1-5481-a909-84d4636cb279","conference_url":"https://api.media.ccc.de/public/conferences/sotm2021"},{"size":115,"length":2086,"mime_type":"video/webm","language":"eng-rus","filename":"sotm2021-10046-eng-rus-Boundaries_Places_and_the_Future_of_Tagging_webm-sd.webm","state":"new","folder":"webm-sd","high_quality":false,"width":720,"height":576,"updated_at":"2021-11-09T20:10:38.397+01:00","recording_url":"https://cdn.media.ccc.de/events/sotm/2021/webm-sd/sotm2021-10046-eng-rus-Boundaries_Places_and_the_Future_of_Tagging_webm-sd.webm","url":"https://api.media.ccc.de/public/recordings/55015","event_url":"https://api.media.ccc.de/public/events/e7e27d89-89b1-5481-a909-84d4636cb279","conference_url":"https://api.media.ccc.de/public/conferences/sotm2021"},{"size":87,"length":2086,"mime_type":"video/mp4","language":"eng-rus","filename":"sotm2021-10046-eng-rus-Boundaries_Places_and_the_Future_of_Tagging_sd.mp4","state":"new","folder":"h264-sd","high_quality":false,"width":720,"height":576,"updated_at":"2021-11-09T19:45:37.315+01:00","recording_url":"https://cdn.media.ccc.de/events/sotm/2021/h264-sd/sotm2021-10046-eng-rus-Boundaries_Places_and_the_Future_of_Tagging_sd.mp4","url":"https://api.media.ccc.de/public/recordings/55012","event_url":"https://api.media.ccc.de/public/events/e7e27d89-89b1-5481-a909-84d4636cb279","conference_url":"https://api.media.ccc.de/public/conferences/sotm2021"},{"size":158,"length":2086,"mime_type":"video/mp4","language":"eng-rus","filename":"sotm2021-10046-eng-rus-Boundaries_Places_and_the_Future_of_Tagging_hd.mp4","state":"new","folder":"h264-hd","high_quality":true,"width":1920,"height":1080,"updated_at":"2021-11-09T19:39:12.553+01:00","recording_url":"https://cdn.media.ccc.de/events/sotm/2021/h264-hd/sotm2021-10046-eng-rus-Boundaries_Places_and_the_Future_of_Tagging_hd.mp4","url":"https://api.media.ccc.de/public/recordings/55008","event_url":"https://api.media.ccc.de/public/events/e7e27d89-89b1-5481-a909-84d4636cb279","conference_url":"https://api.media.ccc.de/public/conferences/sotm2021"},{"size":125,"length":2086,"mime_type":"video/mp4","language":"rus","filename":"sotm2021-10046-rus-Boundaries_Places_and_the_Future_of_Tagging.mp4","state":"new","folder":"h264-hd","high_quality":true,"width":1920,"height":1080,"updated_at":"2021-11-09T19:39:03.142+01:00","recording_url":"https://cdn.media.ccc.de/events/sotm/2021/h264-hd/sotm2021-10046-rus-Boundaries_Places_and_the_Future_of_Tagging.mp4","url":"https://api.media.ccc.de/public/recordings/55549","event_url":"https://api.media.ccc.de/public/events/e7e27d89-89b1-5481-a909-84d4636cb279","conference_url":"https://api.media.ccc.de/public/conferences/sotm2021"},{"size":125,"length":2086,"mime_type":"video/mp4","language":"eng","filename":"sotm2021-10046-eng-Boundaries_Places_and_the_Future_of_Tagging.mp4","state":"new","folder":"h264-hd","high_quality":true,"width":1920,"height":1080,"updated_at":"2021-11-09T19:38:56.828+01:00","recording_url":"https://cdn.media.ccc.de/events/sotm/2021/h264-hd/sotm2021-10046-eng-Boundaries_Places_and_the_Future_of_Tagging.mp4","url":"https://api.media.ccc.de/public/recordings/55548","event_url":"https://api.media.ccc.de/public/events/e7e27d89-89b1-5481-a909-84d4636cb279","conference_url":"https://api.media.ccc.de/public/conferences/sotm2021"},{"size":31,"length":2086,"mime_type":"audio/mpeg","language":"eng","filename":"sotm2021-10046-eng-Boundaries_Places_and_the_Future_of_Tagging_mp3.mp3","state":"new","folder":"mp3","high_quality":false,"width":0,"height":0,"updated_at":"2021-11-09T19:41:04.401+01:00","recording_url":"https://cdn.media.ccc.de/events/sotm/2021/mp3/sotm2021-10046-eng-Boundaries_Places_and_the_Future_of_Tagging_mp3.mp3","url":"https://api.media.ccc.de/public/recordings/55010","event_url":"https://api.media.ccc.de/public/events/e7e27d89-89b1-5481-a909-84d4636cb279","conference_url":"https://api.media.ccc.de/public/conferences/sotm2021"}]}