DOLFIN -- Document-Level Financial test set for Machine Translation

TL;DR

DOLFIN is a new, specialized document-level machine translation test set for financial texts, designed to better evaluate models' handling of complex linguistic phenomena and domain-specific challenges.

Contribution

It introduces a novel, domain-specific, section-based test set for document-level MT, addressing limitations of existing sentence-level datasets.

Findings

The test set effectively discriminates between context-sensitive and context-agnostic models.

Models show weaknesses in translating complex financial texts.

The dataset is publicly available for research use.

Abstract

Despite the strong research interest in document-level Machine Translation (MT), the test sets dedicated to this task are still scarce. The existing test sets mainly cover topics from the general domain and fall short on specialised domains, such as legal and financial. Also, in spite of their document-level aspect, they still follow a sentence-level logic that does not allow for including certain linguistic phenomena such as information reorganisation. In this work, we aim to fill this gap by proposing a novel test set: DOLFIN. The dataset is built from specialised financial documents, and it makes a step towards true document-level MT by abandoning the paradigm of perfectly aligned sentences, presenting data in units of sections rather than sentences. The test set consists of an average of 1950 aligned sections for five language pairs. We present a detailed data collection pipeline that can serve as inspiration for aligning new document-level datasets. We demonstrate the usefulness and quality of this test set by evaluating a number of models. Our results show that the test set is able to discriminate between context-sensitive and context-agnostic models and shows the weaknesses when models fail to accurately translate financial texts. The test set is made public for the community.