# install.packages("devtools")
devtools::install_github("bearloga/maltese")The included dataset is a tidy time series of pageviews for R's article on English Wikipedia from 2015-10-01 to 2017-01-30.
library(maltese)
head(r_enwiki)| date | pageviews |
|---|---|
| 2015-10-01 | 3072 |
| 2015-10-02 | 2575 |
| 2015-10-03 | 1431 |
| 2015-10-04 | 1540 |
| 2015-10-05 | 3041 |
| 2015-10-06 | 3695 |
We can use mlts_transform to convert the data into a machine learning-friendly format with a 7-day lag:
mlts <- mlts_transform(
r_enwiki, date, pageviews,
p = 7, # how many previous points of data to use as features
granularity = "day", # optional, can be automatically detected,
extras = TRUE, extrasAsFactors = TRUE # FALSE by default :D
)
head(mlts)| dt | y | mlts_extras_monthday | mlts_extras_weekday | mlts_extras_week | mlts_extras_month | mlts_extras_year | mlts_lag_1 | mlts_lag_2 | mlts_lag_3 | mlts_lag_4 | mlts_lag_5 | mlts_lag_6 | mlts_lag_7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2015-10-08 | 3278 | 8 | Thursday | 41 | October | 2015 | 3385 | 3695 | 3041 | 1540 | 1431 | 2575 | 3072 |
| 2015-10-09 | 2886 | 9 | Friday | 41 | October | 2015 | 3278 | 3385 | 3695 | 3041 | 1540 | 1431 | 2575 |
| 2015-10-10 | 1692 | 10 | Saturday | 41 | October | 2015 | 2886 | 3278 | 3385 | 3695 | 3041 | 1540 | 1431 |
| 2015-10-11 | 1902 | 11 | Sunday | 41 | October | 2015 | 1692 | 2886 | 3278 | 3385 | 3695 | 3041 | 1540 |
| 2015-10-12 | 3030 | 12 | Monday | 41 | October | 2015 | 1902 | 1692 | 2886 | 3278 | 3385 | 3695 | 3041 |
| 2015-10-13 | 3245 | 13 | Tuesday | 41 | October | 2015 | 3030 | 1902 | 1692 | 2886 | 3278 | 3385 | 3695 |
See the vignette for a detailed walkthrough.
Users of maltese may also be interested in timetk (available on CRAN) which provides several utility functions for working with and manipulating time series data into a ML-friendly form.
Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.