Statistical Machine Translation
with Long Phrase Table andwithout Long Parallel Sentences○Jin'ichi Murakami, Masato Tokuhisa, Satoru Ikehara( Tottori University, Japan)

The Strategy of Our Statistic Machine Translation
1) Long Phrase Tables (Adequacy)
Adequacy ~ translation model P(E/C)
long phrase tables = achieve high accuracy
20 words
English to Italian
Word position change is very small.
○ short phrase table
Japanese to English
Some word are moved from their original position.
○ long phrase tables.

The Strategy of Our Statistic Machine Translation2) 5-gram Model (Fluency)
・ Fluency ~ language model P(E)Not use higher N-gram model.
(the reliability for each parameter becomes low)normal 5-gram model

The Strategy of Our Statistic Machine Translation
3) Remove Long Parallel Sentences
Long Parallel Sentences ○ Wrong Phrase Table○ Low Blue Score
Many Parallel Sentences ○ High Translation?

The Strategy of Our Statistic Machine Translation
4) Standard Tools
GIZA++.2003-09-30.tar.gz
moses.2007-05-29.tgz
training-release-1.3.tgz(train-phrase-model.perl)(Made only some small tools to build a temporal corpus.)Wrong Phrase Table
図 ３ 及び 図 ４ に 示す よう に As shown in FIGS . 6 and 70.047619 4.03037e-09 0.0243902 1.52103e-11、 それ 以外 4 , while all other1 3.84583e-05 0.0217391 4.24439e-09
１ ３ は 1 is a0.0010582 0.000901274 0.000698568
１３は 1
4.97396e-06 7.91046e-05 0.000349284 0.0497444
コンデンサ a0.333333 0.0001482 9.04732e-05 1.01046e-06
コンデンサ i0.000857633 0.0001482 9.04732e-05 2.10078e-06
マイクロコンピュータ merely
0.00263852 0.000423 0.000176398 0.0001555

図３０図に示す実施例は、路面のセンターに１本のガイド５を敷設し、そのガイド５を車体１５に取り付けたガイドローラ３により挟み込んで支持するように構成したものであり、前方又は後方から観た状態を示している。
In the embodiment shown in FIG. 30, one guide 5 is laid at the center of the road surface,
and the chassis 15 is supported by clamping the guide 5 by the guide rollers 3 attached tothe chassis 15, the view being taken from the front or rear of the vehicle.
また、車軸９は、ダブルウィッシュボーン式のリンク１４により車体１５に支持されていると共に、コイルスプリング１６及びダンパー（不図示）により衝撃が吸収緩和されるようになっている。
The axle 9 is supported on a chassis 15 by means of a double wish-bone type link 14, andshocks are absorbed and alleviated by a coil spring 16 and a damper (not shown).
３輪車の場合は、その構造から明らかなようにセンターに車輪があるため、図３０に示す実施例は適用できず、車両の両外側に２本のガイド５を敷設した図３４が最も適用しやすい構成である。
In the case of the three-wheeled vehicle, since one wheel is present at the center as isapparent from its structure, the embodiment shown in FIG. 30 is not applicable, and FIG. 34
in which two guides 5 are laid on the opposite outer sides of the vehicle is easiest to apply.

Remove Long Parallel SentencesJapanese-English Parallel (> 128 char) : 736080 sentences

Decoder : Moses (moses.ini)
ttable-limit
weight-dweight-lweight-t

40
00.1
1.0
0.5 0.0 0.5 0.0 0.0(Cross Entropy)

weight-w-1
distortion-limit -1(The position of the verb changed significantly)

Results→ Effective for JE→ Not effective for EJ

task

methodbleu

Intrinsic-JE

Proposedstandard
Proposedstandard

22.29
21.62
23.93
25.33

Intrinsic-EJ

MAP
Extrinsic-EJ

Human
Adequency
2.58

evaluation
Fluency
3.44

Recall relax
0.77

Proposed: Remove Long Parallel Sentences (> 128 char)1062491 Japanese-English parallel sentences
Standard: Standard moses:
1798571 Japanese-English parallel sentencesOutputs J-E (Proposed)
Input:図５は回転羽根２を駆動するモータの構成例を示す図である。
Output : FIG. 5 is a diagram showing an example of the configuration of a motor for
driving the rotary blade 3.
Correct :G. 5 is a diagram showing a structural example of a motor for driving the rotating
blade
Input
:さらに、心線ワイヤ５１の先端部がラミネートフィルム５９により挟まれて保持され、その変形、ピッチの狂いを防止する。
Output :Further, the leading end portion of the core wire 51, and held in the modificationof the pitch deviation between the laminated film adhering 59 can be prevented. \\Correct :Moreover, the front ends of the core wires 51 are sandwiched with laminatedfilms 59 to prevent deformation of the core wires 51 for the purpose of maintaining theirrelative positions intact.
Input:この絶縁ハウジング１０の外面に取り付けられるシールドカバー３０を図６に示している。
Output :The insulating housing 10 is mounted to an outer surface of the shield cover 30
shown in FIG. 6.
Correct :FIG. 6 shows the shield cover 30, which is to be mounted on the insulativehousing 10.

Outputs J-E (Standard)
Input:図５は回転羽根２を駆動するモータの構成例を示す図である。
Output :The rotator 2 driven by a motor structure shown in FIG. 5.
Correct :G. 5 is a diagram showing a structural example of a motor for driving the rotating
blade 2.

Input
:さらに、心線ワイヤ５１の先端部がラミネートフィルム５９により挟まれて保持され、その変形、ピッチの狂いを防止する。
Output :Further, a distal end portion of the core wire 51 is clamped and held by the pitch
deviation of the laminated film 59, the deformation is prevented.
Correct :Moreover, the front ends of the core wires 51 are sandwiched with laminated films 59
to prevent deformation of the core wires 51 for the purpose of maintaining their relative
positions intact.
Input:この絶縁ハウジング１０の外面に取り付けられるシールドカバー３０を図６に示している。
Output :The insulating housing 10 attached to the outer surface of the shield cover 30 isshown in FIG. 6.
Correct :FIG. 6 shows the shield cover 30, which is to be mounted on the insulative housing
10.

Conclusions
・Remove Long Parallel Sentences
・Long phrase table
・Standard tools
・Statistical Example Based Translation
・Good results for J-E
・0.2229 BLEU score

Future study・Optimize parameters
・Unknown word procedure
・More large database
・Not used parallel sentence(If output likelihood is high,use as parallel sentence)