CORI/RISI Ontology
-General Terms
The American Community Survey (ACS)…
@@ -353,20 +354,27 @@A Block Groupis …
A Tract …
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- is a union of the set of blocks and/or block groups that are located within a specified geographical boundary +
Started being used in 1910 (NY city), at first should follow rivers and roads and contains around 400 peoples.
+if divided between two new tracts and should follow this kind of pattern1: Census Tract O3 (parent) is divided in Census Tract 03.01 (child 1) and Census Tract 03.02.
+
1 https://www.youtube.com/watch?v=DOe4alPmjss
Note Olivier 26-04-2024: still unclear how that translate in geoid_tr and how do they deal when we move from two “parents” to one “child”
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+
- is a union of the set of blocks and/or block groups that are located within a specified geographical boundary (unsure about that do they start from block and build tract or tract and divide in block)
- is often arbitrary, except for coinciding with political lines, in unincorporated areas of the United States
- for some metrics, can be statistically described by the aggregation of statistics for each of its constituent blocks
An Unincorporated Area …
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- is a region that is not governed by a local municipality +
- is a region that is not governed by a local municipality, see also Census Designated Space (CDP)2
2 https://www.census.gov/programs-surveys/bas/information/cdp.html
A County …
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@@ -385,13 +393,16 @@
- is …
A CUD …
ZIP code / ZCTA
+ZIP (“Zone Improvment Plan”) code were made to help deliver mails (“delivery routes”), they usually follow roads that were affected to a postman. At their smallest level they are tied to address (point). The Census Bureau is provisding a Zip Code Tabulation Area (ZCTA) that allow to link which is the dominant ZIP code in a census tabulation blocks3.
+3 https://www.census.gov/programs-surveys/geography/guidance/geo-areas/zctas.html
A Broadband Serviceable Location (BSL) …
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- is “a business or residential location in the United States at which mass-market fixed broadband Internet access service is, or can be, installed.”
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- source: https://help.bdc.fcc.gov/hc/en-us/articles/16842264428059-About-the-Fabric-What-a-Broadband-Serviceable-Location-BSL-Is-and-Is-Not -
+ - is “a business or residential location in the United States at which mass-market fixed broadband Internet access service is, or can be, installed.”4 +
4 source: https://help.bdc.fcc.gov/hc/en-us/articles/16842264428059-About-the-Fabric-What-a-Broadband-Serviceable-Location-BSL-Is-and-Is-Not
- is a location that can have access to multiple ISPs, each offering different services (technologies, upload, download speed).
- can be split into residential and business locations but this distinction does not seem very effective in the National Broadband Map dataset.
- is not geographically represented with exact latitude and longitude, but only by census block geoid and H3 index in the NBM dataset (MDA references this data as the National Broadband Map; officially the dataset is released as BDC (Broadband Data Collection) Public Data). @@ -404,11 +415,12 @@
- is … +
- is a FCC provider (with a provider ID)?
The
-An ISP …
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+An Internet Service Provider (ISP) …
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+In the FCC Broadband Map they are defined by a frn, provider_id and brand_name. We are mostly working with the one who are providing “fixed” services.
An Eligibility Requirement
@@ -472,6 +484,7 @@ A Data Cache
An Internet Service Provider (ISP) …
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In the FCC Broadband Map they are defined by a frn, provider_id and brand_name. We are mostly working with the one who are providing “fixed” services.