OpenStreetMap Taiwan Project - Working with Wikidata
slide: https://hackmd.io/@osm-tw/S1Zf2pu6yx
CC-BY-4.0 OpenStreetMap Taiwan Community
OpenStreetMap Taiwan
2025 10
Ta̍k-ke hó, Hello everyone, This is Dennis Raylin Chen from Taiwan, I want to talk about cleaning and managing dataset. My speech's title is "The Journal of Importing Open Data Address in Taiwan into OpenStreetMap". I will focus on importing address dataset
Who am I?
My online ID is Supaplex, one of the community member of OpenStreetMap Taiwan and Wikidata Taiwan, currently serving as a board of director of Wikimedia Taiwan
Monthly Meetup in Taipei, co-host of OpenStreetMap Taiwan and Wikidata Taiwan
members overlapped with each other
Major change monitor and mapping, tagging scheme discussion
I am one of the co-host of the monthly meetup in Taiwan, co-hosted with Wikidata Taiwan community. There are a hugh overlapped of community members between Wikidata and OpenStreetMap in Taiwan. The OpenStreetMap Taiwan community keep track of major development site, and sometimes discuss tagging scheme of mapping in Taiwan.
Keep track of vandlism of Taiwan and recovery
easy spotted by QA Tools like Osmcha
Keep track of vandlism of Taiwan and recovery
Cross Taiwan Strait Railway planned only by China
Sometimes Chinese people are making unrealistic edit, for example, cross Taiwan Strait Railway. It might be possible to add as proposal status, but most editor not aware about it. Might have trouble to distigish real and imagal status
Visualization of Villages in Taiwan
First Attempt of Using HOT Tasking Manager during Mapping Party
Stuff that We Imported
Village boundary - semi-imported
Drinking Water
Place in name in local language
Hydrant
We have dealed with AED, emergency shelter, ETC toll, address, village boundary, drinking water, place name in national language, fire hydrant etc.
Past(bad) Experience: Emergency Shelters went to null island
The Taiwanese government had released dataset of emergency shelter. But the dataset is quite large, and have some 0,0 location stuff, the nickname null island place.
Past(bad) Experience: Removing nodes outside Taiwan
So the internatl community, also known as the German mapper, decide to make a adjustment, delting the wrong and low-quality shelter data. In the early days of Taiwan community, we are not able to clean up our mess by ourself.
Village boundary import
Change of Code of Household Registration and Conscription Information System
Directorate-General of Budget, Accounting and Statistics->Department of Household Registration
Merging of Villages
ex: split due to large population
program to monitor change of source
We found out that some times villages will change. And made things worse is we didn't use the newest village dataset to import. It was dealt with Directorate-General of Budget, Accounting and Statistics, and hand over to Department of Household Registration to take care. And some times local government will merge or split villages.
Network Analysis of administrative units
This is an analytis by a Chinese mapper. There are some strange father-son relation in Taiwan. For example, empty township relation with no villages. And a single village with multi upper township relation.
Ceb Wiki ljsbot: mass rivers import
The Cebuanoese Wikipedia is a mass robot imported Wikipedia. They use robot to massly create articles. And they also create many river items from GNS dataset.
River Dataset
Not every River has River Code
Wikidata(ceb) items import from GNS
The National map from NLSC
Community matching rivers and creeks with Wikidata and River Code
There are quite large spending on rivers in Taiwan by Taiwanese government. And they asign river code to each river. The number of list of river code is quite small compare to the actual number of river in Taiwan. We have to add more river on both Wikidata and OpenStreetMap, even though these rivers are not in the river code list.
Here is my contact information, To-siā, sṳ̀n-mùng-ǹ! Thank you!
Resume presentation
OpenStreetMap Taiwan Project - Working with Wikidata slide: https://hackmd.io/@osm-tw/S1Zf2pu6yx CC-BY-4.0 OpenStreetMap Taiwan Community OpenStreetMap Taiwan 2025 10 Ta̍k-ke hó, Hello everyone, This is Dennis Raylin Chen from Taiwan, I want to talk about cleaning and managing dataset. My speech's title is "The Journal of Importing Open Data Address in Taiwan into OpenStreetMap". I will focus on importing address dataset
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