intercepts in cubist formula
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topepo commented
The intercept object is being added to the parsed model formula (I think instead of its value).
In the example below should list(list(col = "(Intercept)", val = 15.173, op = "none", is_intercept = 1)) be 15.173?
``` r
library(Cubist)
#> Loading required package: lattice
library(tidymodels)
#> Registered S3 method overwritten by 'xts':
#> method from
#> as.zoo.xts zoo
#> ── Attaching packages ────────────────────────────────────────────────────────── tidymodels 0.0.2 ──
#> ✔ broom 0.5.1 ✔ purrr 0.3.2
#> ✔ dials 0.0.2.9000 ✔ recipes 0.1.6
#> ✔ dplyr 0.8.3 ✔ rsample 0.0.5.9000
#> ✔ ggplot2 3.2.0 ✔ tibble 2.1.3
#> ✔ infer 0.4.0 ✔ yardstick 0.0.2
#> ✔ parsnip 0.0.2.9000
#> ── Conflicts ───────────────────────────────────────────────────────────── tidymodels_conflicts() ──
#> ✖ purrr::discard() masks scales::discard()
#> ✖ dplyr::filter() masks stats::filter()
#> ✖ dplyr::lag() masks stats::lag()
#> ✖ ggplot2::margin() masks dials::margin()
#> ✖ recipes::step() masks stats::step()
library(tidypredict)
library(sessioninfo)
options(width = 100)
data(biomass)
biomass_tr <-
biomass %>%
dplyr::filter(dataset == "Training") %>%
dplyr::select(-dataset, -sample)
biomass_te <-
biomass %>%
dplyr::filter(dataset == "Testing") %>%
dplyr::select(-dataset, -sample)
set.seed(1)
mod <- cubist(x = biomass_tr %>% dplyr::select(-HHV), y = biomass_tr$HHV)
tidypredict_fit(mod)
#> (ifelse(oxygen >= 51.59, list(list(col = "(Intercept)", val = 15.173,
#> op = "none", is_intercept = 1)), 0) + ifelse(oxygen < 42.49 &
#> carbon < 60.97 & hydrogen < 6.85, 0.12089 + carbon * 0.362 +
#> hydrogen * 0.31 + oxygen * -0.009 + sulfur * 0.3, 0) + ifelse(oxygen >=
#> 42.49 & oxygen < 51.59, 10.20375 + carbon * 0.299 + oxygen *
#> -0.123, 0) + ifelse(hydrogen >= 6.85 & carbon < 60.97, -13.1916 +
#> carbon * 0.693, 0) + ifelse(carbon >= 60.97 & nitrogen >=
#> 1.36, 64.2476 + carbon * 0.028 + hydrogen * 0.09 + nitrogen *
#> -24.5, 0) + ifelse(carbon >= 60.97 & nitrogen < 1.36, -2.69375 +
#> carbon * 0.363 + hydrogen * 1.38 + nitrogen * 0.38, 0))/1
session_info()
#> ─ Session info ───────────────────────────────────────────────────────────────────────────────────
#> setting value
#> version R version 3.6.0 (2019-04-26)
#> os macOS High Sierra 10.13.6
#> system x86_64, darwin15.6.0
#> ui X11
#> language (EN)
#> collate en_US.UTF-8
#> ctype en_US.UTF-8
#> tz America/New_York
#> date 2019-07-16
#>
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#>
#> [1] /Library/Frameworks/R.framework/Versions/3.6/Resources/libraryCreated on 2019-07-16 by the reprex package (v0.2.1)