File size: 5,129 Bytes
95a16ea
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
36e0e2c
95a16ea
 
 
 
662bbd1
 
36e0e2c
 
 
 
 
95a16ea
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
---
license: cc-by-sa-4.0
dataset_info:
- config_name: de-enGB
  features:
  - name: source
    dtype: large_string
  - name: translation_A
    dtype: large_string
  - name: translation_B
    dtype: large_string
  - name: A
    dtype: bool
  - name: equal
    dtype: bool
  - name: B
    dtype: bool
  - name: label_A
    dtype: large_string
  - name: label_B
    dtype: large_string
  - name: text
    dtype: large_string
  - name: text_type
    dtype: large_string
  splits:
  - name: train
    num_bytes: 99615
    num_examples: 390
  download_size: 51640
  dataset_size: 99615
- config_name: de-frCH
  features:
  - name: source
    dtype: large_string
  - name: translation_A
    dtype: large_string
  - name: translation_B
    dtype: large_string
  - name: A
    dtype: bool
  - name: equal
    dtype: bool
  - name: B
    dtype: bool
  - name: label_A
    dtype: large_string
  - name: label_B
    dtype: large_string
  - name: text
    dtype: large_string
  - name: text_type
    dtype: large_string
  splits:
  - name: train
    num_bytes: 106345
    num_examples: 385
  download_size: 55015
  dataset_size: 106345
- config_name: de-itCH
  features:
  - name: source
    dtype: large_string
  - name: translation_A
    dtype: large_string
  - name: translation_B
    dtype: large_string
  - name: A
    dtype: bool
  - name: equal
    dtype: bool
  - name: B
    dtype: bool
  - name: label_A
    dtype: large_string
  - name: label_B
    dtype: large_string
  - name: text
    dtype: large_string
  - name: text_type
    dtype: large_string
  splits:
  - name: train
    num_bytes: 102833
    num_examples: 378
  download_size: 54128
  dataset_size: 102833
- config_name: en-deCH
  features:
  - name: source
    dtype: large_string
  - name: translation_A
    dtype: large_string
  - name: translation_B
    dtype: large_string
  - name: A
    dtype: bool
  - name: equal
    dtype: bool
  - name: B
    dtype: bool
  - name: label_A
    dtype: large_string
  - name: label_B
    dtype: large_string
  - name: text
    dtype: large_string
  - name: text_type
    dtype: large_string
  splits:
  - name: train
    num_bytes: 99510
    num_examples: 330
  download_size: 49779
  dataset_size: 99510
configs:
- config_name: de-enGB
  data_files:
  - split: train
    path: de-enGB/train-*
- config_name: de-frCH
  data_files:
  - split: train
    path: de-frCH/train-*
- config_name: de-itCH
  data_files:
  - split: train
    path: de-itCH/train-*
- config_name: en-deCH
  data_files:
  - split: train
    path: en-deCH/train-*
task_categories:
- translation
language:
- en
- de
- it
- fr
tags:
- Supertext
- DeepL
- Translation
- A/B-test
pretty_name: A/B Test Supertext vs DeepL
size_categories:
- 1K<n<10K
---
# A/B Test Supertext vs DeepL

We release all evaluation data and scripts for further analysis and reproduction of the accompanying paper: [A comparison of translation performance between DeepL and Supertext](https://arxiv.org/abs/2502.02577).
The data consists of document-level translations by Supertext and DeepL as well as accompanying ratings by professional translators. Please find more details in the paper.

Please note that the empty lines correspond to paragraph boundaries (i.e., double line breaks) in the original documents.

``` python
# for each language pair, there is a separate subset
data = load_dataset("Supertext/mt-doclevel-ab-test", "en-deCH")
```

## Dataset Details

As strong machine translation (MT) systems are increasingly based on large language models (LLMs), reliable quality benchmarking requires methods that capture their ability to leverage extended context. This study compares two commercial MT systems -- DeepL and Supertext -- by assessing their performance on unsegmented texts. We evaluate translation quality across four language directions with professional translators assessing segments with full document-level context. While segment-level assessments indicate no strong preference between the systems in most cases, document-level analysis reveals a preference for Supertext in three out of four language directions, suggesting superior consistency across longer texts. We advocate for more context-sensitive evaluation methodologies to ensure that MT quality assessments reflect real-world usability.

### Citation
If you use any of the data released in our work, please cite the following paper:

```
@misc{flückiger2025comparisontranslationperformancedeepl,
      title={A comparison of translation performance between DeepL and Supertext}, 
      author={Alex Flückiger and Chantal Amrhein and Tim Graf and Frédéric Odermatt and Martin Pömsl and Philippe Schläpfer and Florian Schottmann and Samuel Läubli},
      year={2025},
      eprint={2502.02577},
      archivePrefix={arXiv},
      primaryClass={cs.CL},
      url={https://arxiv.org/abs/2502.02577}, 
}
```
### Dataset Description


- **Curated by:** Supertext
- **Language(s) (NLP):** English, French, German, Italian
- **License:** CC BY-SA 4.0

### Dataset Sources

- **Repository:** https://github.com/Supertext/evaluation_deepl_supertext
- **Paper:** https://arxiv.org/abs/2502.02577