!!! Overview [{$pagename}] or High [Bias error] occurs when a [Machine Learning model] does not adequately capture the underlying structure of the [Training dataset]. [{$pagename}] is when the [Machine Learning model] does not perform well on the [Training dataset]. An [{$pagename}] [Machine Learning model] is where some parameters or terms that would appear in a correctly specified model are missing. [{$pagename}] would occur, for example, when fitting a linear model to non-linear [data]. Such a model will tend to have poor predictive performance. !! Solving for [{$pagename}] A bigger [Machine Learning model] (ie more [Hidden layers]) will almost always just reduces your [Bias error] without necessarily increasing [Overfitting] ([Variance error]), so long as you regularize appropriately. Generally, using a larger [Training dataset] will __NOT__ solve [{$pagename}] !! More Information There might be more information for this subject on one of the following: [{ReferringPagesPlugin before='*' after='\n' }]