Papers by Perez Ogayo

8 papers
MasakhaNER: Named Entity Recognition for African Languages (2021.tacl-1)

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Challenge: (2020) African languages are underrepresented in existing natural language processing datasets, research, and tools due to lack of datasets and reproducible results.
Approach: They propose to create a dataset for named entity recognition (NER) in ten African languages.
Outcome: The results of the first large dataset for named entity recognition (NER) in ten African languages are released to inform future research on African NLP.
Multi-lingual and Multi-cultural Figurative Language Understanding (2023.findings-acl)

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Challenge: Figures permeate human communication, but are understudied in NLP.
Approach: They create a figurative language inference dataset for seven languages associated with a variety of cultures, using cultural and regional concepts for figurativ expressions.
Outcome: The results show that the most common figurative expressions are found in Hindi, Indonesian, Javanese, Kannada, Sundanese, Swahili and Yoruba.
AfriMTE and AfriCOMET: Enhancing COMET to Embrace Under-resourced African Languages (2024.naacl-long)

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Challenge: Recent advances in machine translation (MT) have focused on scaling multilingual machine translation models and evaluation data to hundreds of languages, including multiple under-resourced languages.
Approach: They propose to use n-gram matching metrics to measure progress in multilingual machine translation to 13 typologically diverse African languages to create high-quality human evaluation data with simplified MQM guidelines.
Outcome: The proposed metrics have a higher correlation with human judgments than n-gram matching metrics such as BLEU and METEOR.
Quality-Aware Decoding for Neural Machine Translation (2022.naacl-main)

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Challenge: Despite advances in machine translation quality estimation and evaluation, decoding is mostly oblivious to this.
Approach: They propose to use a decoding framework that is quality-aware for neural machine translation . they compare various methods like N-best reranking and minimum Bayes risk decoding .
Outcome: The proposed quality-aware decoding outperforms MAP-based decoding on four datasets and two model classes.

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