Nelson Odhiambo
2026
AfriVoices-KE: A Multilingual Speech Dataset for Kenyan Languages
Lilian Wanzare | Cynthia Jayne Amol | Ezekiel Maina | Nelson Odhiambo | Hope Kerubo | Leila Misula | Vivian Oloo | Rennish Mboya | Edwin Onkoba | Edward Ombui | Joseph Muguro | Ciira wa Maina | Andrew Kipkebut | Alfred Omondi Otom | Ian Ndung’u Kang’ethe | Angela Wambui Kanyi | Brian Gichana Omwenga
Proceedings of the SIGUL 2026 Joint Workshop with ELE, EURALI, and DCLRL: Towards Inclusivity and Equality: Language Resources and Technologies for Under-Resourced and Endangered Languages
Lilian Wanzare | Cynthia Jayne Amol | Ezekiel Maina | Nelson Odhiambo | Hope Kerubo | Leila Misula | Vivian Oloo | Rennish Mboya | Edwin Onkoba | Edward Ombui | Joseph Muguro | Ciira wa Maina | Andrew Kipkebut | Alfred Omondi Otom | Ian Ndung’u Kang’ethe | Angela Wambui Kanyi | Brian Gichana Omwenga
Proceedings of the SIGUL 2026 Joint Workshop with ELE, EURALI, and DCLRL: Towards Inclusivity and Equality: Language Resources and Technologies for Under-Resourced and Endangered Languages
AfriVoices-KE is a large-scale multilingual speech dataset comprising approximately 3,000 hours of audio across five Kenyan languages: Dholuo, Kikuyu, Kalenjin, Maasai, and Somali. The dataset includes 750 hours of scripted speech and 2,250 hours of spontaneous speech, collected from 4,777 native speakers across diverse regions and demographics. This work addresses the critical underrepresentation of African languages in speech technology by providing a high-quality, linguistically diverse resource. Data collection followed a dual methodology: scripted recordings drew from compiled text corpora, translations, and domain-specific generated sentences spanning eleven domains relevant to the Kenyan context, while unscripted speech was elicited through textual and image prompts to capture natural linguistic variation and dialectal nuances. A customized mobile application enabled contributors to record using smartphones. Quality assurance operated at multiple layers, encompassing automated signal-to-noise ratio validation prior to recording and human review for content accuracy. Though the project encountered challenges common to low-resource settings, including unreliable infrastructure, device compatibility issues, and community trust barriers, these were mitigated through local mobilizers, stakeholder partnerships, and adaptive training protocols. AfriVoices-KE provides a foundational resource for developing inclusive automatic speech recognition and text-to-speech systems, while advancing the digital preservation of Kenya’s linguistic heritage.
SemEval-2026 Task 9: Detecting Multilingual, Multicultural and Multievent Online Polarization
Usman Naseem | Robert Geislinger | Ada Ren | Sarah Kohail | Rudy Garrido Veliz | P Sam Sahil | Yiran Zhang | Marco Antonio Stranisci | Idris Abdulmumin | Özge Alacam | Cengiz Acarturk | Aisha Jabr | Saba Anwar | Abinew Ali Ayele | Elena Tutubalina | Aung Kyaw Htet | Xintong Wang | Surendrabikram Thapa | Tanmoy Chakraborty | Dheeraj Kodati | Sahar Moradizeyveh | Firoj Alam | Ye Kyaw Thu | Shantipriya Parida | Ihsan Ayyub Qazi | Lilian Diana Awuor Wanzare | Nelson Odhiambo | Clemencia Siro | Ibrahim Said Ahmad | Adem Chanie Ali | Martin Semmann | Chris Biemann | Shamsuddeen Hassan Muhammad | Seid Muhie Yimam
Proceedings of the 20th International Workshop on Semantic Evaluation (2026)
Usman Naseem | Robert Geislinger | Ada Ren | Sarah Kohail | Rudy Garrido Veliz | P Sam Sahil | Yiran Zhang | Marco Antonio Stranisci | Idris Abdulmumin | Özge Alacam | Cengiz Acarturk | Aisha Jabr | Saba Anwar | Abinew Ali Ayele | Elena Tutubalina | Aung Kyaw Htet | Xintong Wang | Surendrabikram Thapa | Tanmoy Chakraborty | Dheeraj Kodati | Sahar Moradizeyveh | Firoj Alam | Ye Kyaw Thu | Shantipriya Parida | Ihsan Ayyub Qazi | Lilian Diana Awuor Wanzare | Nelson Odhiambo | Clemencia Siro | Ibrahim Said Ahmad | Adem Chanie Ali | Martin Semmann | Chris Biemann | Shamsuddeen Hassan Muhammad | Seid Muhie Yimam
Proceedings of the 20th International Workshop on Semantic Evaluation (2026)
We present SemEval-2026 Task 9, a shared task on online polarization detection, covering 22 languages and comprising over 110K annotated instances. Each data instance is multi-labeled with the presence of polarization, polarization type, and polarization manifestation. Participants were asked to predict labels in three subtasks: (1) detecting the presence of polarization, (2) identifying the type of polarization, and (3) recognizing the polarization manifestation. The three tasks attracted over 1,000 participants worldwide and more than 10k submissions on Codabench. We received final submissions from 67 teams and 69 system description papers. We report the baseline results and analyze the performance of the best-performing systems, highlighting the most common approaches and the most effective methods across different subtasks and languages. The dataset and other resources for this task are publicly available.
SemEval-2026 Task 3: Dimensional Aspect-Based Sentiment Analysis (DimABSA)
Liang-Chih Yu | Jonas Becker | Shamsuddeen Hassan Muhammad | Idris Abdulmumin | Lung-Hao Lee | Ying-Lung Lin | Jin Wang | Jan Philip Wahle | Terry Lima Ruas | Natalia Loukachevitch | Alexander Panchenko | Ilseyar Alimova | Lilian Diana Awuor Wanzare | Nelson Odhiambo | Bela Gipp | Kai-Wei Chang | Saif Mohammad
Proceedings of the 20th International Workshop on Semantic Evaluation (2026)
Liang-Chih Yu | Jonas Becker | Shamsuddeen Hassan Muhammad | Idris Abdulmumin | Lung-Hao Lee | Ying-Lung Lin | Jin Wang | Jan Philip Wahle | Terry Lima Ruas | Natalia Loukachevitch | Alexander Panchenko | Ilseyar Alimova | Lilian Diana Awuor Wanzare | Nelson Odhiambo | Bela Gipp | Kai-Wei Chang | Saif Mohammad
Proceedings of the 20th International Workshop on Semantic Evaluation (2026)
We present the SemEval-2026 shared task on Dimensional Aspect-Based Sentiment Analysis (DimABSA), which improves traditional ABSA by modeling sentiment along valence–arousal (VA) dimensions rather than using categorical polarity labels. To extend ABSA beyond consumer reviews to public-issue discourse (e.g., political, energy, and climate issues), we introduce an additional task, Dimensional Stance Analysis (DimStance), which treats stance targets as aspects and reformulates stance detection as regression in the VA space. The task consists of two tracks: Track A (DimABSA) and Track B (DimStance). Track A includes three subtasks: (1) dimensional aspect sentiment regression, (2) dimensional aspect sentiment triplet extraction, and (3) dimensional aspect sentiment quadruplet extraction, while Track B includes only the regression subtask for stance targets. We also introduce a continuous F1 (cF1) metric to jointly evaluate structured extraction and VA regression.The task attracted more than 400 participants, resulting in 112 final submissions and 42 system description papers. We report baseline results, discuss top-performing systems, and analyze key design choices to provide insights into dimensional sentiment analysis at the aspect and stance-target levels. All resources are available on our GitHub repository.
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- Idris Abdulmumin 2
- Shamsuddeen Hassan Muhammad 2
- Lilian Diana Awuor Wanzare 2
- Cengiz Acarturk 1
- Ibrahim Said Ahmad 1
- Özge Alacam 1
- Firoj Alam 1
- Adem Chanie Ali 1
- Ilseyar Alimova 1
- Cynthia Jayne Amol 1
- Saba Anwar 1
- Abinew Ali Ayele 1
- Jonas Becker 1
- Chris Biemann 1
- Tanmoy Chakraborty 1
- Kai-Wei Chang 1
- Rudy Garrido Veliz 1
- Robert Geislinger 1
- Bela Gipp 1
- Aung Kyaw Htet 1
- Aisha Jabr 1
- Ian Ndung’u Kang’ethe 1
- Angela Wambui Kanyi 1
- Hope Kerubo 1
- Andrew Kipkebut 1
- Dheeraj Kodati 1
- Sarah Kohail 1
- Lung-Hao Lee 1
- Ying-Lung Lin 1
- Natalia V Loukachevitch 1
- Ezekiel Maina 1
- Rennish Mboya 1
- Leila Misula 1
- Saif Mohammad 1
- Sahar Moradizeyveh 1
- Joseph Muguro 1
- Usman Naseem 1
- Vivian Oloo 1
- Edward Ombui 1
- Brian Gichana Omwenga 1
- Edwin Onkoba 1
- Alfred Omondi Otom 1
- Alexander Panchenko 1
- Shantipriya Parida 1
- Ihsan Ayyub Qazi 1
- Ada Ren 1
- Terry Ruas 1
- P Sam Sahil 1
- Martin Semmann 1
- Clemencia Siro 1
- Marco Antonio Stranisci 1
- Surendrabikram Thapa 1
- Ye Kyaw Thu 1
- Elena Tutubalina 1
- Jan Philip Wahle 1
- Jin Wang 1
- Xintong Wang 1
- Lilian Wanzare 1
- Seid Muhie Yimam 1
- Liang-Chih Yu 1
- Yiran Zhang 1
- Ciira wa Maina 1