LITMUS++ : An Agentic System for Predictive Analysis of Low-Resource Languages Across Tasks and Models
Avni Mittal, Shanu Kumar, Sandipan Dandapat, Monojit Choudhury
Abstract
We present LITMUS++, an agentic system for predicting language-model performance for queries of the form “How will a Model perform on a Task in a Language?”, a persistent challenge in multilingual and low-resource settings, settings where benchmarks are incomplete or unavailable. Unlike static evaluation suites or opaque LLM-as-judge pipelines, LITMUS++ implements an agentic, auditable workflow: a Directed Acyclic Graph of specialized Thought Agents that generate hypotheses, retrieve multilingual evidence, select predictive features, and train lightweight regressors with calibrated uncertainty. The system supports interactive querying through a chat-style interface, enabling users to inspect reasoning traces and cited evidence. Experiments across six tasks and five multilingual scenarios show that LITMUS++ delivers accurate and interpretable performance predictions, including in low-resource and unseen conditions. Code is available at https://github.com/AvniMittal13/litmus_plus_plus.- Anthology ID:
- 2025.ijcnlp-demo.6
- Volume:
- Proceedings of The 14th International Joint Conference on Natural Language Processing and The 4th Conference of the Asia-Pacific Chapter of the Association for Computational Linguistics: System Demonstrations
- Month:
- December
- Year:
- 2025
- Address:
- Mumbai, India
- Editors:
- Xuebo Liu, Ayu Purwarianti
- Venue:
- IJCNLP
- SIG:
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 47–54
- Language:
- URL:
- https://preview.aclanthology.org/ingest-ijcnlp-aacl/2025.ijcnlp-demo.6/
- DOI:
- Cite (ACL):
- Avni Mittal, Shanu Kumar, Sandipan Dandapat, and Monojit Choudhury. 2025. LITMUS++ : An Agentic System for Predictive Analysis of Low-Resource Languages Across Tasks and Models. In Proceedings of The 14th International Joint Conference on Natural Language Processing and The 4th Conference of the Asia-Pacific Chapter of the Association for Computational Linguistics: System Demonstrations, pages 47–54, Mumbai, India. Association for Computational Linguistics.
- Cite (Informal):
- LITMUS++ : An Agentic System for Predictive Analysis of Low-Resource Languages Across Tasks and Models (Mittal et al., IJCNLP 2025)
- PDF:
- https://preview.aclanthology.org/ingest-ijcnlp-aacl/2025.ijcnlp-demo.6.pdf