Congo-digital-service/Llama-3.1-8B-Instruct-Lingala-QLoRA-merged-v2
Congo-digital-service/Llama-3.1-8B-Instruct-Lingala-QLoRA-merged-v2 is an 8 billion parameter instruction-tuned causal language model, built upon Meta's Llama 3.1-8B-Instruct architecture. Developed by Congo Digital Services (CDS SARL), this model is specifically fine-tuned using QLoRA for conversational text generation in Lingala across five distinct registers. It excels at producing fluent Lingala text for urban, educational, summarization, formal, and translation contexts, achieving a ROUGE-L F1 score of 0.2379 on its instruction test set.
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Model Overview
Congo-digital-service/Llama-3.1-8B-Instruct-Lingala-QLoRA-merged-v2 is an 8 billion parameter language model developed by Congo Digital Services (CDS SARL) for the MALOBA project. It is a supervised fine-tune (using QLoRA) of Meta's meta-llama/Llama-3.1-8B-Instruct base model, specifically adapted for the Lingala language. The QLoRA adapters have been merged into the base weights, resulting in a standalone 8B parameter model.
Key Capabilities
- Lingala Conversational Generation: Optimized for generating conversational text in Lingala.
- Five Registers: Capable of producing text in urban, educational, summarization, formal, and translation registers.
- Performance: Achieved a ROUGE-L F1 score of 0.2379 on its 964-example held-out instruction test set, representing a +56.4% relative improvement over the base model.
- Deployment: This model is served by the MALOBA project under the alias
maloba-llm.
Limitations and Considerations
- Instruction Following: The model primarily learned to write in five registers rather than following varied instructions, due to the nature of its training data.
- Translation Performance: While it has a translation register, its French → Lingala translation performance (BLEU 1.27) is significantly lower than dedicated translation models like NLLB-200 1.3B (BLEU 22.96).
- Factual Accuracy: Not recommended for tasks requiring high factual accuracy (e.g., medical, legal) without human review.
- Orthography: Trained before corpus harmonization, it may reproduce inconsistent spellings.
Use Cases
- Direct Use: Generating conversational Lingala text using
transformersor compatible inference servers. - MALOBA Project: The primary LLM for the MALOBA project's Lingala text generation needs.