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Multi-Task Neural Models for FT and FSMT

Multi-Task Neural Models for Translating Between Styles Within and Across Languages:

  • Formality Transfer (FT)
  • Formality-Sensitive Machine Translation (FSMT)
  • FSMT with Synthetic Supervision

This repository contains implementations for

Usage Instructions

Set-Up

Read and follow the instructions in setup.sh to obtain the necessary software and data.

Machine Translation Models


Model
 
WMT
Informal
BLEU
WMT
Formal
BLEU
WMT

LeD
WMT

PoD
MSLT
Informal
BLEU
MSLT
Formal
BLEU
MSLT

LeD
MSLT

PoD
NMT 28.63 28.63 0 0 47.83 47.83 0 0
NMT DS-Tag 28.24 28.95 9.27 6.44 47.60 47.24 8.18 1.10
Multi-Task 27.75 28.39 10.89 7.76 47.55 45.08 11.97 1.41
Multi-Task DS-Tag 27.65 29.12 11.51 8.35 47.46 46.66 10.29 1.54
Online Target Inference 27.70 28.53 10.97 7.25 46.64 43.23 12.40 1.63
Online Style Inference 26.67 28.65 14.53 12.58 45.46 44.16 14.52 2.19
NMT
> bash scripts/main.sh -m 1 -t translation -y none
NMT DS-Tag
> bash scripts/main.sh -m 1 -t translation-unk-ds
Multi-Task
> bash scripts/main.sh -m 1 -t translation-unk-transfer
Multi-Task DS-Tag
> bash scripts/main.sh -m 1 -t translation-unk-transfer-ds
Online Target Inference
> bash scripts/main.sh -m 1 -t translation-unk-transfer -i oti
Online Style Inference
> bash scripts/main.sh -m 1 -t translation-unk-transfer -i osi

Formality Transfer Benchmark Models

Model TYPE (cmd) Informal
->Formal
Formal
->Informal
Informal
->Informal
Formal
->Formal
None none 70.63 ± 0.23 37.00 ± 0.18 54.54 ± 0.44 58.98 ± 0.93
Tag-Src tag-src 72.16 ± 0.34 37.67 ± 0.11 66.87 ± 0.58 78.78 ± 0.37
Tag-Src-Block block-tag-src 72.00 ± 0.05 37.38 ± 0.12 65.46 ± 0.29 76.72 ± 0.39
Tag-Src-Tgt tag 72.29 ± 0.23 37.62 ± 0.37 67.81 ± 0.41 79.34 ± 0.55
Factor-Concat factor-concat 72.47 ± 0.11 37.62 ± 0.26 67.03 ± 0.36 79.80 ± 0.38
Factor-Sum factor-sum 72.43 ± 0.29 37.78 ± 0.26 67.24 ± 0.56 80.34 ± 0.46
Pred-Concat decoder-concat 72.35 ± 0.16 37.62 ± 0.13 66.69 ± 0.21 77.85 ± 0.31
Pred-Sum decoder-sum 72.02 ± 0.30 37.41 ± 0.17 66.15 ± 0.41 77.62 ± 0.28
BOS decoder-bos 72.08 ± 0.22 37.56 ± 0.13 66.40 ± 0.23 77.43 ± 0.34
Bias decoder-bias 71.58 ± 0.31 37.52 ± 0.15 63.66 ± 0.51 73.24 ± 0.55
> bash scripts/main.sh -m -5 -t transfer -y TYPE

Lexical and Positional Differences (LePoD)

See the LePoD directory.

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