WeatherPlay: Weather Conditions and Playing a Game

In partykit: A Toolkit for Recursive Partytioning

Description

Artificial data set concerning the conditions suitable for playing some unspecified game.

Usage

data("WeatherPlay")

Format

A data frame containing 14 observations on 5 variables.

outlook

factor.

temperature

numeric.

humidity

numeric.

windy

factor.

play

factor.

Source

Table 1.3 in Witten and Frank (2011).

References

Witten IH, Frank E (2011). Data Mining: Practical Machine Learning Tools and Techniques. 3rd Edition, Morgan Kaufmann, San Francisco.

See Also

party, partynode, partysplit

Examples

## load weather data
data("WeatherPlay", package = "partykit")
WeatherPlay

## construct simple tree
pn <- partynode(1L,
  split = partysplit(1L, index = 1:3),
  kids = list(
    partynode(2L,
      split = partysplit(3L, breaks = 75),
      kids = list(
        partynode(3L, info = "yes"),
        partynode(4L, info = "no"))),
    partynode(5L, info = "yes"),
    partynode(6L,
      split = partysplit(4L, index = 1:2),
      kids = list(
        partynode(7L, info = "yes"),
        partynode(8L, info = "no")))))
pn

## couple with data
py <- party(pn, WeatherPlay)

## print/plot/predict
print(py)
plot(py)
predict(py, newdata = WeatherPlay)

## customize printing
print(py,
  terminal_panel = function(node) paste(": play=", info_node(node), sep = ""))

Example output

Loading required package: grid
    outlook temperature humidity windy play
1     sunny          85       85 false   no
2     sunny          80       90  true   no
3  overcast          83       86 false  yes
4     rainy          70       96 false  yes
5     rainy          68       80 false  yes
6     rainy          65       70  true   no
7  overcast          64       65  true  yes
8     sunny          72       95 false   no
9     sunny          69       70 false  yes
10    rainy          75       80 false  yes
11    sunny          75       70  true  yes
12 overcast          72       90  true  yes
13 overcast          81       75 false  yes
14    rainy          71       91  true   no
[1] root
|   [2] V1 in (-Inf,1]
|   |   [3] V3 <= 75 *
|   |   [4] V3 > 75 *
|   [5] V1 in (1,2] *
|   [6] V1 in (2, Inf]
|   |   [7] V4 <= 1 *
|   |   [8] V4 > 1 *
[1] root
|   [2] outlook in sunny
|   |   [3] humidity <= 75: yes
|   |   [4] humidity > 75: no
|   [5] outlook in overcast: yes
|   [6] outlook in rainy
|   |   [7] windy in false: yes
|   |   [8] windy in true: no
 1  2  3  4  5  6  7  8  9 10 11 12 13 14 
 4  4  5  7  7  8  5  4  3  7  3  5  5  8 
[1] root
|   [2] outlook in sunny
|   |   [3] humidity <= 75: play=yes
|   |   [4] humidity > 75: play=no
|   [5] outlook in overcast: play=yes
|   [6] outlook in rainy
|   |   [7] windy in false: play=yes
|   |   [8] windy in true: play=no

partykit documentation built on May 31, 2017, 3:38 a.m.