Which problem arises when training RNNs on long sequences?All of the given optionsUnderfittingVanishing or exploding gradientsOverfittingHigh bias
Question
Which problem arises when training RNNs on long sequences?All of the given optionsUnderfittingVanishing or exploding gradientsOverfittingHigh bias
Solution
The main problem that arises when training Recurrent Neural Networks (RNNs) on long sequences is the issue of vanishing or exploding gradients.
Here's why:
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Vanishing gradients: As the sequence length increases, the gradients that are back-propagated can become extremely small, essentially approaching zero. This is known as the vanishing gradients problem. When this happens, the weights of the network cannot be updated effectively, leading to poor performance.
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Exploding gradients: On the other hand, the gradients can also become extremely large, or 'explode', which can cause the learning process to become unstable and the model to diverge.
These problems make it difficult for the RNN to learn and retain long-term dependencies in the data, which is a crucial requirement for many sequence prediction tasks.
The other options mentioned, such as underfitting, overfitting, and high bias, are general problems that can occur in any type of neural network, not just RNNs or specifically when training on long sequences.
Similar Questions
Which problem in RNNs does LSTM help to address?High varianceVanishing gradientOverfittingAll of the options givenBias
Why are RNNs susceptible to issues with their gradients?1 pointGradients can grow exponentiallyGradients can quickly drop and stabilize at near zeroPropagation of errors due to the recurrent characteristicNumerical computation of gradients can drive into instabilitiesAll of the above
During the training of RNNs for sequence generation, what is the common technique used to mitigate the vanishing gradient problem?DropoutGradient clippingData augmentationL1 regularizationBatch normalization
What is the key advantage of using LSTMs over basic RNNs in sequence generation tasks?Less prone to overfittingLower computational costSimpler architectureAbility to remember long-term dependenciesFaster training speeds
Question 2What is NOT TRUE about RNNs?1 pointRNNs are VERY suitable for sequential data.RNNs need to keep track of states, which is computationally expensive. RNNs are very robust against vanishing gradient problem.
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