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Banana
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Blind Spots of the CohereLabs/tiny-aya-base model

Model Tested

Model Loading Explanation

The model was loaded using the transformers library on a CUDA-enabled GPU. The Modal platform was used in an environment were the Nvidia T4 GPU was enabled. The compute environment was CPU = 0.125 cores and RAM 256 MiB. As an Nvidia GPU was used, CUDA was enabled.

Explanation of the two key functions used to load the model:

  • The AutoTokenizer.from_pretrained() function is used to fetch the specific vocabulary rules for the aya model from Hugging Face and builds a tokenizer object responsible for translating human text into the numerical tokens the LLM requires to process, and it converts the model's numerical output back into readable text.
  • The AutoModelForCausalLM.from_pretrained() function is used to download and initialise the tiny-aya-base model and its pre-trained weights. The device_map="cuda" argument enables the function to load the entire model directly into the system's GPU to drastically accelerate processing speed compared to running it on a standard CPU.

The code for loading the model is below:

from transformers import AutoModelForCausalLM, AutoTokenizer
import torch

model_name = "CohereLabs/tiny-aya-base"
tokenizer = AutoTokenizer.from_pretrained(model_name)
model = AutoModelForCausalLM.from_pretrained(
    model_name,
    device_map="cuda", 
)

Fine-Tuning & Dataset Creation Recommendations

Dataset for finetuning

To correct the identified blind spots, the model requires a fine-tuning dataset focused on localised conversational context and structural robustness. The evaluation revealed a significant gap in comprehending Nigerian cultural nuances (particularly Nigerian Pidgin English) and a rigid bias where the model continuously hallucinates multiple-choice test formats in outputs.

The dataset must consist of high-quality, open-ended prompt and response pairs that teach the model to handle regional contexts naturally and follow standard structural instructions without defaulting to test based formats.

How the dataset will be sourced/ curated?

  • Targeted web scraping from regional platforms like Nairaland and local TV and radio transcripts to curate high quality Nigerian conversational text.
  • Synthetic data generation using larger frontier models for conversational scenarios accompanied by manual verification
  • Crowdsourcing through local universities for manual annotation of conversational data with local jargon
  • Manually constructing 'trick' prompts (like mid-sentence instruction changes or queries about fictional entities) to build a robust set of refusal and correction examples.

Estimated dataset size

According to the InstructGPT and Alpaca papers, a range between 10000 to 50000 of high quality examples will be needed to prevent catastropic forgetting and to ensure that the model has a sufficient exposure to the Nigerian context and logical conversational text.

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Paper for oselumese/tiny-aya-base-blindspots