API Reference
Duration
Describing some time duration is surprisingly common in feature engineering workflows. Fennel lets you express durations in an easy to read natural language as described below
Signifier | Unit | |
---|---|---|
y | Year | |
w | Week | |
d | Day | |
h | Hour | |
m | Minute | |
s | Second |
Examples:
- "7h" -> 7 hours
- "12d" -> 12 days
- "2y" -> 2 years
- "3h 20m 4s" -> 3 hours 20 minutes and 4 seconds
- "2y 4w" -> 2 years and 4 weeks
Info
A year is not a fixed amount of time but is hardcoded to be exactly 365 days
Note that there is no shortcut for month because there is a very high degree of variance in month's duration- some months are 28 days, some are 30 days and some are 31 days. A common convention in feature engineering is to use 4 weeks
to describe a month.