
*** IMPUTING MINIMAL VALUES ***

Example w/ missing values
['M', 1874, 'RR', ?, 2, '?', 'THROUGH', 'IRON', '?', '?', 'SIMPLE-T']
Imputed:
['M', 1874, 'RR', 804, 2, 'N', 'THROUGH', 'IRON', 'SHORT', 'S', 'SIMPLE-T']

['M', 1876, 'HIGHWAY', 1245, ?, '?', 'THROUGH', 'STEEL', 'LONG', 'F', 'SUSPEN']
['M', 1876, 'HIGHWAY', 1245, 1, 'N', 'THROUGH', 'STEEL', 'LONG', 'F', 'SUSPEN']

['A', 1876, 'HIGHWAY', 1200, 4, 'G', 'THROUGH', 'WOOD', 'SHORT', 'S', 'WOOD']
['A', 1876, 'HIGHWAY', 1200, 4, 'G', 'THROUGH', 'WOOD', 'SHORT', 'S', 'WOOD']

['O', 1878, 'RR', ?, 2, 'G', '?', 'STEEL', '?', '?', 'SIMPLE-T']
['O', 1878, 'RR', 804, 2, 'G', 'THROUGH', 'STEEL', 'SHORT', 'S', 'SIMPLE-T']

['M', 1882, 'RR', ?, 2, 'G', '?', 'STEEL', '?', '?', 'SIMPLE-T']
['M', 1882, 'RR', 804, 2, 'G', 'THROUGH', 'STEEL', 'SHORT', 'S', 'SIMPLE-T']

['A', 1883, 'RR', ?, 2, 'G', 'THROUGH', 'STEEL', '?', 'F', 'SIMPLE-T']
['A', 1883, 'RR', 804, 2, 'G', 'THROUGH', 'STEEL', 'SHORT', 'F', 'SIMPLE-T']


*** IMPUTING MAXIMAL VALUES ***

Example w/ missing values
['M', 1874, 'RR', ?, 2, '?', 'THROUGH', 'IRON', '?', '?', 'SIMPLE-T']
Imputed:
['M', 1874, 'RR', 4558, 2, 'G', 'THROUGH', 'IRON', 'LONG', 'F', 'SIMPLE-T']

['M', 1876, 'HIGHWAY', 1245, ?, '?', 'THROUGH', 'STEEL', 'LONG', 'F', 'SUSPEN']
['M', 1876, 'HIGHWAY', 1245, 6, 'G', 'THROUGH', 'STEEL', 'LONG', 'F', 'SUSPEN']

['A', 1876, 'HIGHWAY', 1200, 4, 'G', 'THROUGH', 'WOOD', 'SHORT', 'S', 'WOOD']
['A', 1876, 'HIGHWAY', 1200, 4, 'G', 'THROUGH', 'WOOD', 'SHORT', 'S', 'WOOD']

['O', 1878, 'RR', ?, 2, 'G', '?', 'STEEL', '?', '?', 'SIMPLE-T']
['O', 1878, 'RR', 4558, 2, 'G', 'DECK', 'STEEL', 'LONG', 'F', 'SIMPLE-T']

['M', 1882, 'RR', ?, 2, 'G', '?', 'STEEL', '?', '?', 'SIMPLE-T']
['M', 1882, 'RR', 4558, 2, 'G', 'DECK', 'STEEL', 'LONG', 'F', 'SIMPLE-T']

['A', 1883, 'RR', ?, 2, 'G', 'THROUGH', 'STEEL', '?', 'F', 'SIMPLE-T']
['A', 1883, 'RR', 4558, 2, 'G', 'THROUGH', 'STEEL', 'LONG', 'F', 'SIMPLE-T']


*** IMPUTING AVERAGE/MAJORITY VALUES ***

Example w/ missing values
['M', 1874, 'RR', ?, 2, '?', 'THROUGH', 'IRON', '?', '?', 'SIMPLE-T']
Imputed:
['M', 1874, 'RR', 1300, 2, 'G', 'THROUGH', 'IRON', 'MEDIUM', 'F', 'SIMPLE-T']

['M', 1876, 'HIGHWAY', 1245, ?, '?', 'THROUGH', 'STEEL', 'LONG', 'F', 'SUSPEN']
['M', 1876, 'HIGHWAY', 1245, 2, 'G', 'THROUGH', 'STEEL', 'LONG', 'F', 'SUSPEN']

['A', 1876, 'HIGHWAY', 1200, 4, 'G', 'THROUGH', 'WOOD', 'SHORT', 'S', 'WOOD']
['A', 1876, 'HIGHWAY', 1200, 4, 'G', 'THROUGH', 'WOOD', 'SHORT', 'S', 'WOOD']

['O', 1878, 'RR', ?, 2, 'G', '?', 'STEEL', '?', '?', 'SIMPLE-T']
['O', 1878, 'RR', 1300, 2, 'G', 'THROUGH', 'STEEL', 'MEDIUM', 'F', 'SIMPLE-T']

['M', 1882, 'RR', ?, 2, 'G', '?', 'STEEL', '?', '?', 'SIMPLE-T']
['M', 1882, 'RR', 1300, 2, 'G', 'THROUGH', 'STEEL', 'MEDIUM', 'F', 'SIMPLE-T']

['A', 1883, 'RR', ?, 2, 'G', 'THROUGH', 'STEEL', '?', 'F', 'SIMPLE-T']
['A', 1883, 'RR', 1300, 2, 'G', 'THROUGH', 'STEEL', 'MEDIUM', 'F', 'SIMPLE-T']


*** MANUALLY CONSTRUCTED IMPUTER ***

Example w/ missing values
['M', 1874, 'RR', ?, 2, '?', 'THROUGH', 'IRON', '?', '?', 'SIMPLE-T']
Imputed:
['M', 1874, 'RR', 1234, 2, '?', 'THROUGH', 'IRON', '?', '?', 'SIMPLE-T']

['M', 1876, 'HIGHWAY', 1245, ?, '?', 'THROUGH', 'STEEL', 'LONG', 'F', 'SUSPEN']
['M', 1876, 'HIGHWAY', 1245, ?, '?', 'THROUGH', 'STEEL', 'LONG', 'F', 'SUSPEN']

['A', 1876, 'HIGHWAY', 1200, 4, 'G', 'THROUGH', 'WOOD', 'SHORT', 'S', 'WOOD']
['A', 1876, 'HIGHWAY', 1200, 4, 'G', 'THROUGH', 'WOOD', 'SHORT', 'S', 'WOOD']

['O', 1878, 'RR', ?, 2, 'G', '?', 'STEEL', '?', '?', 'SIMPLE-T']
['O', 1878, 'RR', 1234, 2, 'G', '?', 'STEEL', '?', '?', 'SIMPLE-T']

['M', 1882, 'RR', ?, 2, 'G', '?', 'STEEL', '?', '?', 'SIMPLE-T']
['M', 1882, 'RR', 1234, 2, 'G', '?', 'STEEL', '?', '?', 'SIMPLE-T']

['A', 1883, 'RR', ?, 2, 'G', 'THROUGH', 'STEEL', '?', 'F', 'SIMPLE-T']
['A', 1883, 'RR', 1234, 2, 'G', 'THROUGH', 'STEEL', '?', 'F', 'SIMPLE-T']


*** TREE-BASED IMPUTATION ***

Example w/ missing values
['M', 1874, 'RR', ?, 2, '?', 'THROUGH', 'IRON', '?', '?', 'SIMPLE-T']
Imputed:
['M', 1874, 'RR', 1257, 2, 'N', 'THROUGH', 'IRON', 'MEDIUM', 'S', 'SIMPLE-T']

['M', 1876, 'HIGHWAY', 1245, ?, '?', 'THROUGH', 'STEEL', 'LONG', 'F', 'SUSPEN']
['M', 1876, 'HIGHWAY', 1245, 2, 'N', 'THROUGH', 'STEEL', 'LONG', 'F', 'SUSPEN']

['A', 1876, 'HIGHWAY', 1200, 4, 'G', 'THROUGH', 'WOOD', 'SHORT', 'S', 'WOOD']
['A', 1876, 'HIGHWAY', 1200, 4, 'G', 'THROUGH', 'WOOD', 'SHORT', 'S', 'WOOD']

['O', 1878, 'RR', ?, 2, 'G', '?', 'STEEL', '?', '?', 'SIMPLE-T']
['O', 1878, 'RR', 1257, 2, 'G', 'THROUGH', 'STEEL', 'MEDIUM', 'S', 'SIMPLE-T']

['M', 1882, 'RR', ?, 2, 'G', '?', 'STEEL', '?', '?', 'SIMPLE-T']
['M', 1882, 'RR', 1257, 2, 'G', 'THROUGH', 'STEEL', 'MEDIUM', 'F', 'SIMPLE-T']

['A', 1883, 'RR', ?, 2, 'G', 'THROUGH', 'STEEL', '?', 'F', 'SIMPLE-T']
['A', 1883, 'RR', 1257, 2, 'G', 'THROUGH', 'STEEL', 'MEDIUM', 'F', 'SIMPLE-T']


*** BAYES and AVERAGE IMPUTATION ***

Example w/ missing values
['M', 1874, 'RR', ?, 2, '?', 'THROUGH', 'IRON', '?', '?', 'SIMPLE-T']
Imputed:
['M', 1874, 'RR', 1567, 2, 'G', 'THROUGH', 'IRON', 'MEDIUM', 'S', 'SIMPLE-T']

['M', 1876, 'HIGHWAY', 1245, ?, '?', 'THROUGH', 'STEEL', 'LONG', 'F', 'SUSPEN']
['M', 1876, 'HIGHWAY', 1245, 3, 'G', 'THROUGH', 'STEEL', 'LONG', 'F', 'SUSPEN']

['A', 1876, 'HIGHWAY', 1200, 4, 'G', 'THROUGH', 'WOOD', 'SHORT', 'S', 'WOOD']
['A', 1876, 'HIGHWAY', 1200, 4, 'G', 'THROUGH', 'WOOD', 'SHORT', 'S', 'WOOD']

['O', 1878, 'RR', ?, 2, 'G', '?', 'STEEL', '?', '?', 'SIMPLE-T']
['O', 1878, 'RR', 1567, 2, 'G', 'THROUGH', 'STEEL', 'LONG', 'F', 'SIMPLE-T']

['M', 1882, 'RR', ?, 2, 'G', '?', 'STEEL', '?', '?', 'SIMPLE-T']
['M', 1882, 'RR', 1567, 2, 'G', 'THROUGH', 'STEEL', 'MEDIUM', 'F', 'SIMPLE-T']

['A', 1883, 'RR', ?, 2, 'G', 'THROUGH', 'STEEL', '?', 'F', 'SIMPLE-T']
['A', 1883, 'RR', 1567, 2, 'G', 'THROUGH', 'STEEL', 'MEDIUM', 'F', 'SIMPLE-T']


*** CUSTOM IMPUTATION BY MODELS ***

ERECTED<=1894.500: 1257
ERECTED>1894.500
|    SPAN=SHORT<null node>: <null node>
|    SPAN=MEDIUM: 1571
|    SPAN=LONG: 1829

['M', 1876, 'HIGHWAY', 1245, ?, '?', 'THROUGH', 'STEEL', 'LONG', 'F', 'SUSPEN']
['M', 1876, 'HIGHWAY', 1245, 3, 'G', 'THROUGH', 'STEEL', 'LONG', 'F', 'SUSPEN']

['A', 1876, 'HIGHWAY', 1200, 4, 'G', 'THROUGH', 'WOOD', 'SHORT', 'S', 'WOOD']
['A', 1876, 'HIGHWAY', 1200, 4, 'G', 'THROUGH', 'WOOD', 'SHORT', 'S', 'WOOD']

['O', 1878, 'RR', ?, 2, 'G', '?', 'STEEL', '?', '?', 'SIMPLE-T']
['O', 1878, 'RR', 1567, 2, 'G', 'THROUGH', 'STEEL', 'LONG', 'F', 'SIMPLE-T']

['M', 1882, 'RR', ?, 2, 'G', '?', 'STEEL', '?', '?', 'SIMPLE-T']
['M', 1882, 'RR', 1567, 2, 'G', 'THROUGH', 'STEEL', 'MEDIUM', 'F', 'SIMPLE-T']

['A', 1883, 'RR', ?, 2, 'G', 'THROUGH', 'STEEL', '?', 'F', 'SIMPLE-T']
['A', 1883, 'RR', 1567, 2, 'G', 'THROUGH', 'STEEL', 'MEDIUM', 'F', 'SIMPLE-T']


*** IMPUTATION WITH SPECIAL VALUES ***

[RIVER, ERECTED, PURPOSE, LENGTH, LANES, CLEAR-G, T-OR-D, MATERIAL, SPAN, REL-L, TYPE]

[RIVER, ERECTED_def, ERECTED, PURPOSE, LENGTH_def, LENGTH, LANES_def, LANES, CLEAR-G, T-OR-D, MATERIAL, SPAN, REL-L, TYPE]

RIVER: M -> M
ERECTED: 1874 -> 1874 (def)
PURPOSE: RR -> RR
LENGTH: ? -> 1567 (undef)
LANES: 2 -> 2 (def)
CLEAR-G: ? -> NA
T-OR-D: THROUGH -> THROUGH
MATERIAL: IRON -> IRON
SPAN: ? -> NA
REL-L: ? -> NA
TYPE: SIMPLE-T -> SIMPLE-T

['M', 1876, 'HIGHWAY', 1245, ?, '?', 'THROUGH', 'STEEL', 'LONG', 'F', 'SUSPEN']
['M', 'def', 1876, 'HIGHWAY', 'def', 1245, 'undef', 3, 'NA', 'THROUGH', 'STEEL', 'LONG', 'F', 'SUSPEN']

['A', 1876, 'HIGHWAY', 1200, 4, 'G', 'THROUGH', 'WOOD', 'SHORT', 'S', 'WOOD']
['A', 'def', 1876, 'HIGHWAY', 'def', 1200, 'def', 4, 'G', 'THROUGH', 'WOOD', 'SHORT', 'S', 'WOOD']

['O', 1878, 'RR', ?, 2, 'G', '?', 'STEEL', '?', '?', 'SIMPLE-T']
['O', 'def', 1878, 'RR', 'undef', 1567, 'def', 2, 'G', 'NA', 'STEEL', 'NA', 'NA', 'SIMPLE-T']

['M', 1882, 'RR', ?, 2, 'G', '?', 'STEEL', '?', '?', 'SIMPLE-T']
['M', 'def', 1882, 'RR', 'undef', 1567, 'def', 2, 'G', 'NA', 'STEEL', 'NA', 'NA', 'SIMPLE-T']

['A', 1883, 'RR', ?, 2, 'G', 'THROUGH', 'STEEL', '?', 'F', 'SIMPLE-T']
['A', 'def', 1883, 'RR', 'undef', 1567, 'def', 2, 'G', 'THROUGH', 'STEEL', 'NA', 'F', 'SIMPLE-T']

