Frequency class: Difference between revisions
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* FC is displayed rounded to one decimal place | * 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 | * Except for an object with an extremely small number of occurrences, an object's FC is highly likely to be stable over time | ||
The frequency class data given in pattern infoboxes on this wiki is taken from [[Catagolue]] unless otherwise specified. | |||
==[[G1]]== | ==[[G1]]== | ||
Revision as of 19:19, 3 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
The frequency class data given in pattern infoboxes on this wiki is taken from Catagolue unless otherwise specified.
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
External links