Approaches to Machine Translation
2
Broad Overview of Machine Translation
MT Evaluation
Input Pre-Processing
System Combination
Vauquois MT Triangle
Interlingua
Deep syntax
Surface syntax
Morphological layer
Source sentence
Target sentence
Vauquois MT Triangle
Manual evaluation
Interlingua
Automatic
Post-Editing
Deep syntax
Surface syntax
Morphological layer
However, he tried to find refuge in Brazil.
RB , PRP VBD TO VB NN IN NNP .
Target sentence
Source sentence
Přesto se snažil najít útočiště v Brazílii.
However, he tried to find refuge in Brazil.
Input
Output
Corrected
Output
Vauquois MT Triangle
Interlingua
vs.
Rule-Based
Statistical
run away
refuge
(safe place) = útočiště, úkryt
(on street) = refýž
refuge ||| útočiště ||| 0.233279 0.191626 0.210294 0.28199 ||| ||| 613 680 143
refuge ||| domovech ||| 0.14218 0.0241546 0.0441176 0.138889 ||| ||| 211 680 30
...
refuge ||| uchýlili ||| 0.0438596 0.0080515 0.00735294 0.0485437 ||| ||| 114 680 5
...
refuge ||| skrýši ||| 0.0909091 0.0024155 0.00441176 0.0857143 ||| ||| 33 680 3
...
refuge ||| uniknout ||| 0.00145985 0.0024155 0.00441176 0.0009885 ||| ||| 2055 680 3
refuge ||| utéci ||| 0.00594059 0.0032206 0.00441176 0.004908 ||| ||| 505 680 3
refuge ||| záchranu ||| 0.00101557 0.0032206 0.00441176 0.0012289 ||| ||| 2954 680 3
...
refuge ||| plavidel ||| 0.000244529 0.0016103 0.00294118 0.0002274 ||| ||| 8179 680 2
refuge ||| azylu ||| 0.00252207 0.0016103 0.00294118 0.0019102 ||| ||| 793 680 2
refuge ||| bezpečný úkryt ||| 0.125 3.11174e-05 0.00294118 0.0247106 ||| ||| 16 680 2
...
refuge ||| najít útočiště ||| 0.142857 0.000617152 0.00294118 0.141068 ||| ||| 14 680 2
refuge ||| ochranu ||| 5.38692e-05 0.0024155 0.00294118 7.14e-05 ||| ||| 37127 680 2
...
refuge ||| refuge ||| 1 0.0016103 0.00294118 1 ||| ||| 2 680 2
...
refuge ||| ostrůvek bezpečí ||| 0.166667 1.20774e-09 0.00147059 0.0030266 ||| ||| 6 680 1
...
refuge ||| pevnosti ||| 0.000561167 0.0008052 0.00147059 0.0005 ||| ||| 1782 680 1
refuge ||| pevný ostrůvek bezpečí ||| 1 2.89858e-15 0.00147059 0.0030266 ||| ||| 1 680 1
...
SB try STH
= pokusit se (SB, STH)
Deep syntax
Surface syntax
Morphological layer
However, he tried to find refuge in Brazil.
RB , PRP VBD TO VB NN IN NNP .
Target sentence
Source sentence
Přesto se snažil najít útočiště v Brazílii.
However, he tried to find refuge in Brazil.
Automatic evaluation
against reference translation
Vauquois MT Triangle
Interlingua
Deep syntax
Surface syntax
Morphological layer
Source sentence
Target sentence
Quality or confidence estimation without any reference
asylum
vessels
hideaway
isle of safety