optimizer.add_param_group({'params': pg1, 'weight_decay': hyp['weight_decay']})
时间: 2023-10-08 09:04:19 浏览: 77
粒子群算法参数优化代码
This line of code adds a new parameter group to the optimizer. The parameter group consists of parameters specified in the list pg1 and the weight decay value specified in the dictionary hyp with the key 'weight_decay'.
In machine learning, weight decay is a regularization technique that adds a penalty term to the loss function to prevent overfitting. It essentially adds a cost for having large weights in the model. The weight decay value is a hyperparameter that determines the strength of this penalty term.
By adding a new parameter group with a weight decay value, the optimizer is instructed to apply a different weight decay to a subset of parameters. This can be useful in cases where different parts of the model require different levels of regularization.
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