Random Search for Hyper-Parameter Optimization, James Bergstra and Yoshua Bengio, 2012Journal of Machine Learning Research, Vol. 13 - Introduces and empirically demonstrates the effectiveness of random search over grid search for hyperparameter optimization, highly relevant to the strategies section.
Deep Learning, Ian Goodfellow, Yoshua Bengio, Aaron Courville, 2016 (MIT Press) - A comprehensive textbook covering fundamental concepts of deep learning, including recurrent neural networks, hyperparameters, and general optimization techniques.
Adam: A Method for Stochastic Optimization, Diederik P. Kingma, Jimmy Ba, 20153rd International Conference on Learning Representations (ICLR 2015)DOI: 10.48550/arXiv.1412.6980 - Describes the Adam optimizer, an adaptive learning rate method frequently used in training deep learning models, including sequence models.