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Constantine Lignos

9 accepted papers

2024

CoNLL#: Fine-grained Error Analysis and a Corrected Test Set for CoNLL-03 English

COLING 2024main

Modern named entity recognition systems have steadily improved performance in the age of larger and more powerful neural models. However, over the past several years, the state-of-the-art has seemingly hit another plateau on the benchmark CoNLL-03 English dataset. In this paper, we perform a deep di…

Cited by 2SourcePDFScholar
2024

Language Model Priors and Data Augmentation Strategies for Low-resource Machine Translation: A Case Study Using Finnish to Northern Sámi

ACL 2024findings

We investigate ways of using monolingual data in both the source and target languages for improving low-resource machine translation. As a case study, we experiment with translation from Finnish to Northern Sámi.Our experiments show that while conventional backtranslation remains a strong contender,…

Cited by 0SourcePDFScholar
2024

ParaNames 1.0: Creating an Entity Name Corpus for 400+ Languages Using Wikidata

COLING 2024main

We introduce ParaNames, a massively multilingual parallel name resource consisting of 140 million names spanning over 400 languages. Names are provided for 16.8 million entities, and each entity is mapped from a complex type hierarchy to a standard type (PER/LOC/ORG). Using Wikidata as a source, we…

2024

QueryNER: Segmentation of E-commerce Queries

COLING 2024main

We present QueryNER, a manually-annotated dataset and accompanying model for e-commerce query segmentation. Prior work in sequence labeling for e-commerce has largely addressed aspect-value extraction which focuses on extracting portions of a product title or query for narrowly defined aspects. Our…

2022

Detecting Unassimilated Borrowings in Spanish: An Annotated Corpus and Approaches to Modeling

ACL 2022long

This work presents a new resource for borrowing identification and analyzes the performance and errors of several models on this task. We introduce a new annotated corpus of Spanish newswire rich in unassimilated lexical borrowings—words from one language that are introduced into another without ort…

2022

MasakhaNER 2.0: Africa-centric Transfer Learning for Named Entity Recognition

EMNLP 2022main

African languages are spoken by over a billion people, but they are under-represented in NLP research and development. Multiple challenges exist, including the limited availability of annotated training and evaluation datasets as well as the lack of understanding of which settings, languages, and re…

2022

Toward More Meaningful Resources for Lower-resourced Languages

ACL 2022findings

In this position paper, we describe our perspective on how meaningful resources for lower-resourced languages should be developed in connection with the speakers of those languages. Before advancing that position, we first examine two massively multilingual resources used in language technology deve…