Curated Major Map Features Library
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| Number of Parts | 351 | |
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| License | CC Attribution 3.0 Unported: You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | |
| Identifiers | 10.5446/68984 (DOI) | |
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| Production Year | 2022 |
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Meta elementLevel (video gaming)Library (computing)Computer animation
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Library (computing)Error messageElectronic visual displayEuclidean vectorDaylight saving timeProcess (computing)Distribution (mathematics)Latent heatElement (mathematics)MereologyLibrary (computing)File formatLevel (video gaming)Multiplication signStreaming mediaDiscrepancy theoryProcess (computing)Connectivity (graph theory)Set (mathematics)Category of beingOpen setMetropolitan area networkElement (mathematics)Computer fileReal numberComputer animation
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Address spaceAttribute grammarInformationType theoryLibrary (computing)Data typeWater vaporPolygonFinitary relationMusical ensembleOperator (mathematics)BuildingGeometryFlagTimestampPoint (geometry)Revision controlSineProcess (computing)Control flowTerm (mathematics)Daylight saving timeGeometryLibrary (computing)Different (Kate Ryan album)Level (video gaming)Group actionWater vaporTrailValidity (statistics)InformationElement (mathematics)PermanentMereologyCategory of beingAxiom of choiceMoment (mathematics)MultiplicationQR codeDistribution (mathematics)Formal languageProcess (computing)Computer fileTerm (mathematics)FlagService (economics)Function (mathematics)Type theoryMeta elementThresholding (image processing)Local ringAttribute grammarMetadataDiscrepancy theoryObject (grammar)ResultantObject-relational mappingFile formatOrder of magnitudeSign (mathematics)Inverter (logic gate)Point (geometry)Daylight saving timeMathematicsMetropolitan area networkCodeVideo gameComputer animation
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Library (computing)Level (video gaming)Computer animation
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Computer animation
Transcript: English(auto-generated)
00:01
Hi everyone, I'm Yun Zilin from Meta. I'm going to go through the curated major map feature libraries. So the curated major map feature library, that's called a library. It consists of three major components. First it's a data set in JSON file format of OpenStreetMap elements. They are with manually real tags and other properties that we expect to match any
00:24
OSM data set at all times. Second, it has a pipeline that compare the library with OSM plan file and alert us any discrepancy. Lastly, it involves the manual reprocess to identify any discrepancy or vandalism. So for the
00:45
dataset part, there are three type of map features included in dataset. The previous landmark. Each of these map features involve names in multiple languages and tagging provides key information about the features. And the
01:04
language of the choice at the moment are the most frequent language that are called at meta map services. Of course, naming each language is reviewed by our localization team at Meta before we put into the library. So now let's take a look at a couple of examples. The first one is the Mega City. As I
01:23
mentioned earlier, it's a JSON file format, so each feature is a JSON object. It includes properties like OSM type, OSM IDs, the tag with multiple names in different language, geometry in WKD format, and the category to indicate
01:40
what kind of map feature it is. Here's an example of Inland Waterbody, an example of U.S. Landmark, the San Francisco City Hall. About the guidelines, it includes three kind of validation tracks. The tag tracks, the geometry track, and the untracked name track. And each of the track will
02:00
output the file or pass signal. The tag tracks flags modify or deleted attributes between the library and the latest OSM data. And then the geometry track will flag the elements when there is a significant difference between the geometry on live OSM and the libraries. And then the
02:23
untracked name track will flag the elements when there's new names added to OSM but does not exist in the library yet. When all the tracks are complete on each element, we will output the signals. And at this point, there are many review process involved. And our reviewer will
02:42
review the failed track result and decide what actions to take. The action could be fixed on live OSM or it could be modified the library. So in conclusion, the curated feature library captures the valid attributes of permanent map feed features. It's used to compare the latest OSM
03:03
file and the library to detect any discrepancy to prevent vandalism of major cities, water bodies, and U.S. landmarks. And it's released as part of the metadata map distribution release process. If you're interested in data, you can scan the QR code here to get more
03:22
information. In the future, we plan to continue expand the library in terms of feature types and languages. We also want to improve the threshold of each validation track. If you want to download this curated map feature library, here's the URL. Thank you.
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