Frequency class: Difference between revisions
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==See also== | ==See also== | ||
* | * Relative frequency | ||
== External links == | == External links == | ||
* [https://golhobby.com/ Frequency Class Calculator] | * [https://golhobby.com/ Frequency Class Calculator] | ||
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Revision as of 21:57, 2 March 2022
The frequency class of an object is a measure of its commonness. The frequency class of an object O, in a given set of objects, is defined as x iff the most common object in the set, M, is 2x times as common as O. To wit:
Usage on the LifeWiki
Frequency classes given on the LifeWiki are computed relative to the most common object, block, using data from Catagolue's B3/S23/C1 census:
- FC(object) = log2(occurrences_of_block/occurrences_of_object)
- FC is displayed rounded to one decimal place
- Except for an object with an extremely small number of occurrences, an object's FC is highly likely to be stable over time
For extremely rare objects, there might be enough occurrences for a large enough sample size in G1 but not C1. To calculate the frequency class using G1 data, take the standard formula and add 6.3; the number 6.3 was determined empirically. Make sure that the object being checked is one that is not ignored in G1.
See also
- Relative frequency
External links