
doi: 10.2139/ssrn.6552789
Current convolutional neural network (CNN) models excel at image classification tasks, often achieving performance comparable to or surpassing human capabilities. However, when these models are subjected to continuous learning scenarios, where new image classes are progressively added, their accuracy on previously learned classes tends to decrease drastically, a phenomenon known as catastrophic forgetting (CF). Existing techniques to mitigate CF often incur significant computational costs, manifesting as increased model sizes that demand more memory and hardware resources, or extended training times due to larger datasets and retraining efforts. To address this issue, we explore the use of Low-Rank Adapters, which applies the Low-Rank Adaptation (LoRA) technique to convolutional neural networks (CNN), to mitigate CF in continuous learning. Our approach effectively reduces CF while only minimally increasing the number of new parameters added to the CNN model. We evaluate this method on benchmark datasets commonly used in continuous learning setups, under a task-incremental scenario, demonstrating that CF can be mitigated with less than a 15% increase in parameters for each new task in the convolutional layers, and approximately a 2% increase when considering the entire model compared to our baseline, while maintaining similar accuracy.
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